Upload
bkmindia
View
217
Download
4
Embed Size (px)
Citation preview
7/27/2019 International Geological Symbol
1/54
Cartographic standard geological
symbol indexVersion 3
Publications Production
Research Report RR/01/01
7/27/2019 International Geological Symbol
2/54
BRITISH GEOLOGICAL SURVEY
RESEARCH REPORT RR/01/01
Cartographic standard geological
symbol indexVersion 3
C H Mawer
Key words
Geological map; symbols; area
ornaments; line styles.
Bibliographical reference
MAWER C H.2002.
Cartographic standard geological
symbol index. Version 3.BritishGeological Survey Research
Report, RR/01/01. 49pp.
ISBN 085272 402 0
NERC 2002 Keyworth, Nottingham British Geological Survey 2002
7/27/2019 International Geological Symbol
3/54
The full range of Survey publications is available from the BGSSales Desks at Nottingham, London and Edinburgh; see contact
details below or shop online at www.geologyshop.com
The London Information Office also maintains a referencecollection of BGS publications including maps for consultation.
The Survey publishes an annual catalogue of its maps and otherpublications; this catalogue is available from any of the BGS SalesDesks.
The British Geological Survey carries out the geological survey ofGreat Britain and Northern Ireland (the latter as an agencyservice for the government of Northern Ireland), and of thesurrounding continental shelf, as well as its basic research
projects. It also undertakes programmes of British technical aid ingeology in developing countries as arranged by the Department
for International Development and other agencies.
The British Geological Survey is a component body of the NaturalEnvironment Research Council.
Keyworth, Nottingham NG12 5GG
( 0115-936 3241 Fax 0115-936 3488e-mail: [email protected] online at: www.geologyshop.com
Murchison House, West Mains Road, Edinburgh EH9 3LA
( 0131-667 1000 Fax 0131-668 2683e-mail: [email protected]
London Information Office at the Natural History Museum
(Earth Galleries), Exhibition Road, South Kensington, London
SW7 2DE
( 020-7589 4090 Fax 020-7584 8270( 020-7942 5344/45 email: b [email protected]
Forde House, Park Five Business Centre, Harrier Way,
Sowton, Exeter, Devon EX2 7HU
( 01392-445271 Fax 01392-445371
Geological Survey of Northern Ireland, 20 College Gardens,
Belfast BT9 6BS
( 028-9066 6595 Fax 028-9066 2835
Maclean Building, Crowmarsh Gifford, Wallingford,
Oxfordshire OX10 8BB
( 01491-838800 Fax 01491-692345
Sophia House, 28 Cathedral Road, Cardiff CF11 9LJ
( 029-2066-0147 Fax 029-2066-0159
Parent Body
Natural Environment Research Council, Polaris House,
North Star Avenue, Swindon, Wiltshire SN2 1EU
( 01793-411500 Fax 01793-411501
www.nerc.ac.uk
BRITISH GEOLOGICAL SURVEY
7/27/2019 International Geological Symbol
4/54
i
This report represents the latest version (version 3) of the
official BGS cartographic symbols, ornaments and line
styles.
Version 1.0 was produced in April 1997, following adevelopment project to unify 1:10 000 scale and 1:50 000
scale map symbols (CS/R&D/7). Version 2.0 was produced
in February 1999, following geological updates, and
inclusion of line styles and area ornaments (RR-99-05).
Version 3.0 was produced in September 2002, following
geological updates. This version replaces all previous
versions.
Foreword
7/27/2019 International Geological Symbol
5/54
ii
Foreword i
Contents ii
1 Introduction 1
1.1 Standard geological symbols
2 Symbols 2
2.1 Index of symbols listed alphabetically within
each geological classification 2
2.2 Index of symbols listed alphabetically by
description 22
3 Area ornaments 41
Graphic ornaments listed alphabetically by description
4 Line styles 45
Graphic line styles listed alphabetically by description
Contents
7/27/2019 International Geological Symbol
6/54
1
This document was compiled from information created
using MicroStation from Bentley Systems and
Fontographer from Macromedia. It was alsodesigned to accompany three Microstation digital libraries
and seven font libraries, which may be released at some
future time.
1.1 STANDARD GEOLOGICAL SYMBOLSThe geological symbols are described in Section 2. The
BGS standard length for an average* symbol is 3mm at
1:25 000 scale and all smaller scale maps, and 4mm for
1:10 000. (*The average symbol being the length of the
main body of the symbol i.e. the length of the Alluvium
symbol without a prefix or suffix).
Each symbol has been given a reference name, which isprimarily used within the Microstation digital library. The
reference names are an abbreviated form of their
description, many are grouped together in their geological
classification with a common prefix as follows:
ALV Alluvial deposits
BRK Brickearth
GFL Glaciofluvial deposits
GLA Glaciolacustrine deposits
GL Glacial deposits
IGL Interglacial deposits
LAC Lacustrine deposits
MA Marine deposits
RM Raised marine deposits
RS Rock symbols
RT River terrace deposits
S Structural symbols
SG Sand and gravel.
1 Introduction
7/27/2019 International Geological Symbol
7/54
2
SECTION 5
CARTO.CEL
2.1
SYMBOLS
INDEX LISTED BY GEOLOGICAL
CLASSIFICATION
7/27/2019 International Geological Symbol
8/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
D R I F T
Small area of made ground, backfilled pit ART_BP A
Small area of made ground, above surface ART_AS C
Small area of worked ground ART_WG B
Small area of landslip MSM_L P
Blockfield BLOC ECoombe deposits COD F
Clay-with-flints CWF G
Sand in clay-with-flints CWF_S D
Debris cone DCON H
Head or hillwash HEAD I
Head 1 HEAD1 M
Head 2 HEAD2 N
Blanket head / regolith HEAD_R K
Head, Burton Lazars HEADBL p
Head, Colluvium HEAD_C q
Gravelly head HEAD_G J
Head, Little Dalby HEADLD r
Head, Pen Hill HEADPH s
Sandy head HEAD_S L
Valley bottom head HEAD_V t
Pebbly clay and sand PBS Q
Scree / talus SCRE R
Inactive scree / talus SCRE_I T
ARTIFICIAL
DEPOSITS
MASS-
MOVEMENT
3
7/27/2019 International Geological Symbol
9/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Blown sand BLS WBlown sand, 1 BLS_1 X
Brickearth BRK_ Y
Brickearth, Dartford Silt BRK_DA Z
Brickearth, Enfield Silt BRK_ES [
Brickearth, Ilford Silt BRK_IL \
Brickearth, Langley Silt BRK_LS ]Brickearth, Wolston Clay BRK_WC ^
Loess LOESS _
Peat PEAT c
Basin peat PEA_BA l
Blanket peat PEA_BL m
Fen peat PEA_FN n
Hill peat PEA_H o
Nordelph peat PEAT_N e
Peat flow PEAT_F d
Submerged forest PET_SF f
Diatomite DIAT a
Diatomite, fluvial DIAT_F b
Shell marl SLM g
Bog iron ore ORE j
Calcareous tufa TUFA_C h
Tufa TUFA k
AEOLIAN
DEPOSITS
ORGANIC
DEPOSITS
CHEMICAL
/ORGANIC
DEPOSITS
4
7/27/2019 International Geological Symbol
10/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Alluvial fan deposits ALV_FN GAlluvial fan deposits, gravel ALV_FG F
Alluvium ALV A
Alluvium, 1 ALV_1 B
Alluvium, clay ALV_C C
Alluvium, sand and gravel ALV_SG H
River Terraces Arun Terrace Deposits, 1st RT_A1 KArun Terrace Deposits, 2nd RT_A2 L
Arun Terrace Deposits, 3rd RT_A3 M
Arun Terrace Deposits, 4th RT_A4 N
Arun Terrace Deposits, 5th RT_A5 O
Arun Terrace Deposits, 6th RT_A6 P
Arun Terrace Deposits, 7th RT_A7 Q
Balderton Sand and Gravel RT_BDN Y
Bank Farm Terrace RT_B U
Bassingfield Sand and Gravel RT_BS b
Beaconsfield Gravel RT_BC9 X
Beenham Grange Gravel RT_BG2 \
Beenham Stocks Gravel RT_BS7 c
Beeston Sand and Gravel RT_BEE Z
Belton Sand and Gravel RT_BEL [
Birstall Sand and Gravel RT_BIR ^
Black Park Gravel RT_BPG a
Blackwater Terrace Deposits, 3rd RT_B3 V
Blackwater Terrace Deposits, 4th RT_B4 W
Boyn Hill Gravel RT_BH ]
FLUVIAL
DEPOSITS
5
7/27/2019 International Geological Symbol
11/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Bramley Wey Terrace Deposits, 2nd RT_BW2 dBucklebury Gravel RT_BK8 _
Brooksby Sand and Gravel RT_BKY
Bunny Sand and Gravel RT_BN
Bytham Sand and Gravel RT_BTH
Caesar's Camp Gravel RT_CCG
Cheltenham Sand and Gravel ALV_CH DCombe Member RT_CM e
Corbets Tey Gravel RT_CY
Daylesford Member, 1st RT_DM1 g
Dollis Hill Gravel RT_DH f
Dry valley deposits ALV_DV E
Eagle Moor Sand and Gravel RT_EM
Eggington Common Sand and Gravel RT_EC h
Etwall Sand and Gravel RT_ET j
Fen Sand and Gravel RT_FG k
Finsbury Gravel RT_FIN l
Fluvial Sand and Gravel RT_FSG n
Freeland Member RT_FR m
Fulbeck Sand and Gravel RT_FUL o
Gerrards Cross Gravel RT_GC r
Godalming Wey Deposits, 1st RT_GW1 s
Godalming Wey Deposits, 1a RT_G1A p
Godalming Wey Deposits, 1b RT_G1B q
Godalming Wey Deposits, 2nd RT_GW2 t
Godalming Wey Deposits, 3rd RT_GW3 u
River Terraces
(continued)
6
7/27/2019 International Geological Symbol
12/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Hackney Gravel RT_HA xHanborough Member RT_H4 w
Holme Pierrepont Sand and Gravel RT_HP z
Kempton Park Gravel RT_KP {
Knighton Sand and Gravel RT_KN |
Leaves Green Gravel RT_LG }
Leen Sand and Gravel RT_LN Little Hereford River Terrace RT_H v
Lynch Hill Gravel RT_LH ~
Northmoor Member RT_N1
Ockbrook Sand and Gravel RT_OcK
Rissington Member RT_RM1
River Avon Deposits, 1st RT_AV1 S
River Avon Deposits, 2nd RT_AV2 T
River Severn Deposits, 1st RT_S1
River Severn Deposits, 2nd RT_S2
River Severn Deposits, 3rd RT_S3
River terrace deposits, 1st RT01
River terrace deposits,1a RT01A
River terrace deposits,1b RT01B
River terrace deposits,1c RT01C
River terrace deposits, 1st - 2nd RT01-2
River terrace deposits, 2nd RT02
River terrace deposits, 2nd - 3rd RT02-3
River terrace deposits, 3rd RT03
River terrace deposits, 4th RT04
River Terraces
(continued)
7
7/27/2019 International Geological Symbol
13/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
River terrace deposits, 5th RT05 River terrace deposits, 5th - 6th RT05-6
River terrace deposits, 6th RT06
River terrace deposits, 7th RT07
River terrace deposits, 8th RT08
River terrace deposits, 9th RT09
River terrace deposits 10th RT10 River terrace deposits, 11th RT11
River terrace deposits, 12th RT12
River terrace deposits, 13th RT13
River terrace deposits, 14th RT14
River terrace deposits, 15th RT15
River terrace deposits, undifferentiated RT_U
River Worfe Deposits, undifferentiated RT_WF
River Worfe Terrace Deposits, 1st RT_WF1
River Worfe Terrace Deposits, 2nd RT_WF2
River Wye Terrace Deposits, 1st RT_WY1
River Wye Terrace Deposits, 2nd RT_WY2
Rother Terrace Deposits, 1st RT_RO1
Rother Terrace Deposits, 2nd RT_RO2
Rother Terrace Deposits, 3rd RT_RO3
Rother Terrace Deposits, 4th RT_RO4
Rother Terrace Deposits, 5th RT_RO5
Rother Terrace Deposits, undifferentiated RT_ROU
Shakenhurst Terrace RT_S
Shepperton Gravel RT_SH
River Terraces
(continued)
8
7/27/2019 International Geological Symbol
14/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
River Terraces
(continued)
Sherborne Member, 1st terrace RT_SM1 Sherborne Member, 2nd terrace RT_SM2
Silchester Gravel RT_SL6
Summertown Radley Member, 2nd terrace RT_SR2
Surrey Hill Gravel RT_SHG
Syston Sand and Gravel RT_SYS
Taplow Gravel RT_TAP Thatcham Gravel RT_TH3
Wanlip Sand and Gravel RT_WAN
Warp ALV_W I
Westland Green Gravel RT_WG
Westmill Lower Gravel RT_WM
Whatton Sand and Gravel RT_WH
Winter Hill Gravel RT_WH7
Wolvercote Member RT_WO3
Woodford Gravel RT_WD
Lacustrine deposits LAC }
Lacustrine deposits 1 LAC1
Lacustrine deposits 2 LAC2
Lacustrine deposits 3 LAC3
Lacustrine delta deposits LAC_D ~
Lacustrine shoreface and beach deposits LAC_SB
Lacustrine shoreface and beach deposits 5 LAC_S5
LACUSTRINE
DEPOSITS
9
7/27/2019 International Geological Symbol
15/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Bank deposits MA_B H
Bank deposits, sand MA_BS L
Barroway Drove Beds MA_BDB D
Chenier deposits MA_CH `
Netley Heath Deposits MA_NET
Coastal barrier deposits MA_CB E
Coastal barrier, sand and gravel MA_SGC R
Coastal zone deposits, undifferentiated MA_CZ a
Intertidal deposits, undifferentiated MA_I b
Marine band MA_MB I
Marine beach deposits MA_BE C
Marine deposits, undifferentiated MA_MA G
Marine deposits, sand and gravel MA_SG Q
Mud deposits MA_M F
Saltmarsh deposits MA_SM W
Sand and silt deposits MA_SSI X
Sand deposits MA_S K
Sand, tabular or sheet deposits MA_SST Y
Shell bank (mussel band) MA_SHB U
Shoreface deposits MA_SF d
Shoreface deposits, sand MA_SFS P
Shoreface deposits, sand and gravel MA_SSG S
Silt deposits MA_SI V
Storm beach deposits MA_SB c
Storm beach deposits, 1 MA_SB1 M
Storm beach deposits, gravel MA_SBG O
MARINE
DEPOSITS
10
7/27/2019 International Geological Symbol
16/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Supratidal deposits undifferentiated MA_SU T
Tabular or sheet deposits MA_ST Z
Tidal flat deposits MA_TF ^
Tidal flat deposits, 1 MA_TF1 [
Tidal, river or creek deposits MA_TR \
Tidal, river or creek deposits, mud MA_TRM ]
Tidal, river or creek deposits, mud and gravel MA_TMG J
Washover deposits MA_WO _
Beach deposits RM_SB2 r
Brackish lagoon RM_BL
Delta deposits, sand and gravel RM_DS k
Flandrian deposits RM_FL l
Intertidal RM_IN m
Late glacial RM_LG |
Post glacial RM_PG q
Raised marine delta deposits RM_D j
Raised marine deposits RM e
Raised marine deposits, clay RM_C {
Raised marine deposits, high RM_2 g
Raised marine deposits, highest RM_3 h
Raised marine deposits, low RM_1 f
Raised marine deposits, March Gravels RM_MG o
Raised marine deposits, mud RM_M n
Raised marine deposits, Nor Valley Clay RM_NV p
Raised marine deposits, sand and gravel RM_SG u
Raised marine deposits, silt and clay RM_SC t
MARINE
DEPOSITS
(continued)
RAISED MARINE
DEPOSITS
11
7/27/2019 International Geological Symbol
17/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Raised marine deposits, Terrington Beds RM_TB w
Raised marine deposits, Tottenhill Gravels RM_TO y
Raised marine, tidal, river or creek deposits RM_TF x
Raised tidal flat deposits of Flandrian age RM_TRF z
Shore beach deposits of Flandrian age RM_SBF s
Subtidal RM_SU v
Interglacial lacustrine deposits IGL_LA D
Interglacial deposits, undifferentiated IGL A
Interglacial fluvial deposits IGL_FL C
Interglacial marine deposits, undifferentiated IGL_MA E
Interglacial marine shore beach deposits IGL_MS FGLACIAL
DEPOSITSDiamicton DM
Glacial deposits GL [
Crag with tail GL_CG \
Hummocky glacial and morainic deposits GL_HMC ]
Muddy sand and gravel GL_MSG ^
Glaciofluvial deposits, undifferentiated GFL K
Baginton Sand and Gravel GFL_B M
Burtle Beds, GFL_BU ~
Corton Formation GFL_CO
Deltaic and / or fan deposits GFL_D NLochton Sand and Gravel Formation (East Grampian Drift
Group)GFL_EG
Eagle Moor Sand and Gravel GFL_EM O
Holderness Formation GFL_HO
Ice-contact GFL_IC P
Glaciofluvial
deposits
RAISED MARINE
DEPOSITS
(continued)
INTERGLACIAL
12
7/27/2019 International Geological Symbol
18/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Irish Sea Ice Sheet (sheet deposits) GFL_IT Irish Sea Ice Sheet, undifferentiated GFL_I
Lowestoft Formation GFL_L
Drumlithie Sand and Gravel (Mearns Drift Group) GFL_MD
Moreton Member GFL_MT Q
Overstrand Formation GFL_O
Oadby Member GFL_OD RPre-Devensian GFL_PD S
Sheet deposits, 1st GFL_S1 T
Sheet deposits, 2nd GFL_S2 U
Sheet deposits, 3rd GFL_S3 V
Sand and gravel GFL_SG W
Sheet deposits GFL_SH X
Wigston Sand and Gravel GFL_WI
Woolford Heath Member GFL_WL Y
Wolston Sand and Gravel GFL_WO Z
Glaciolacustrine Glaciolacustrine deposits GLA a
Glaciolacustrine deposits 1 GLA1 k
Glaciolacustrine deposits 2 GLA2 l
Clay GLA_C b
Delta deposits, sand and gravel GLA_DG c
Delta deposits GLA_DL d
Delta deposits, sand GLA_DS e
Glen Dye Silts Formation (East Grampian Drift Group) GLA_EG
Findern Clay GLA_FC f
Silt and clay GLA_M g
GLACIAL
DEPOSITS
Glaciofluvial
Deposits (continued)
13
7/27/2019 International Geological Symbol
19/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Glaciomarine
Ury Silts Formation (Mearns Drift Group) GLA_MD Silt and clay, 1st GLA_M1 h
Rotherby clay GLA_RO
Sand GLA_S _
Sand and gravel GLA_SG j
Glaciomarine deposits GLM m
Ardersier Silts Formation, GLM_A Till Till or boulder clay TIL n
Benholm Clay Formation TIL_BB
Wragby, Calcethorpe & Belmont TIL_C q
Corton Formation TIL_CO u
Banchory Till Formation (east Grampian Drift Group) TIL_EG
Holderness Formation TIL_HO v
Irish Sea Ice Sheet TIL_I
Lowestoft Formation TIL_L w
Marsh Till TIL_M r
Mill of Forest Formation (Mearns Drift Group) TIL_MD
Moreton Member TIL_MT s
Overstrand Formation TIL_O |
Oadby Till TIL_OD x
Oadby Till (Lias-rich) TIL_OL y
Oadby Till (Trias-rich) TIL_OT
Ruddington Moor Till TIL_RM }
Thrussington Till TIL_TH {
14
7/27/2019 International Geological Symbol
20/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Anker Sand and Gravel SG_A aChelsfield Gravel SG_CH b
Dunsmore Gravel SG_DG c
Erratic ERRAT `
Hathern Gravel SG_HAT d
Sand and gravel, age uncertain SG_U f
Stanmore Gravel SG_ST eUpton Sand and Gravel SG_UP g
Well Hill Gravel SG_WH h
Fall of glacial drainage channel GDC_FA B
Glacial drainage channel, front GDC_F A
Glacial striae GLST F
Glacial striae direction of ice flow GLSTI G
Kettle hollow KH H
Roche moutonne GL_RM D
Roche moutonne with striae GL_RMS E
Rockhead or bedrock ROCK I
Single sided glacial drainage channel GDC_S C
Acid tuff RS_ATF L
Acid tuffite RS_ATT M
Aplite RS_APL K
Basic tuff RS_BTF \
Basic tuffite RS_BTT ]
ROCK SYMBOLS
LANDFORM
MISCELLANEOUS
DRIFT
15
7/27/2019 International Geological Symbol
21/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Cataclastic (Metamorphic) RS_BEMN
Cataclastic rocks RS_BET O
Foliated RS_FOL R
Grandiorite X RS_GRX S
Microdiorite RS_P W
Microgranite RS_FG P
Mylonitic (metamorphic) RS_MU1V
Mylonitic rocks RS_MU U
Pegmatite RS_PEG X
Pseudotachylitic RS_KAP T
Rhyolite RS_R Y
Sheared rock (igneous and metamorphic) RS_SH Z
Corrugated strata, low dip S_ISCL ?
Bedding Corrugated foliation S_ISCF c
Cross-bedding of foresets S_CBF A
Direction of younging S_DY C
Dune-bedding S_DB B
General dip S_GDIP D
General dip, underground S_GDUP E
Gently inclined strata S_GIS F
Gently undulating strata S_GUS G
Highly inclined strata S_ISH L
Horizontal overturned strata S_HOS H
Horizontal strata S_HS I
Inclined strata 1 S_IS1 J
ROCK SYMBOLS
(continued)
STRUCTURALSYMBOLS
16
7/27/2019 International Geological Symbol
22/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
STRUCTURAL
SYMBOLS
Bedding (continued) Inclined strata 2 S_IS2 K
Inclined strata, overturned S_ISO M
Inclined strata, uncertain S_ISU O
Inclined strata, underground S_ISUD R
Strike of strata S_STS W
Undulating bed, inclined S_UIS T
Undulating vertical strata S_UVS UVertical strata S_VS V
Horizontal foliation S_HF k
Inclined foliation S_IF o
Strike of foliation S_STF l
Undulating foliation S_UF m
Vertical foliation S_VF n
Vertical foliation, general corrugated strike S_VFC j
Direction of cleavage S_DC Y
Horizontal cleavage S_HC Z
Inclined cleavage S_IC [
Inclined cleavage, sandstone S_ICS \
Sheared rock S_SR b
Strike of cleavage S_STC ^
Undulating cleavage, inclined S_UCI _
Vertical cleavage S_VC `
Vertical cleavage in sandstone S_VCS a
Horizontal joint S_HJ
Inclined joint S_IJ
Vertical joint S_VJ
Cleavage /
schistosity
Foliation or
layering
17
7/27/2019 International Geological Symbol
23/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Linear structures
Horizontal lineation S_HLI
Plunging lineation S_PLI
Vertical lineation S_VLI
Igneous rocks Horizontal flow jointing S_HFJ w
Horizontal primary crystal alignment S_HPCA s
Horizontal primary planar fabric in igneous rocks S_HPPF t
Horizontal relict, planar fabric in plutonic rocks S_HR uHorizontal welding foliation S_HWF v
Inclined flow jointing S_IFJ w
Inclined primary crystal alignment S_IPCA x
Inclined primary planar fabric S_IPP y
Inclined primary planar fabric, overturned S_IPPO z
Inclined relict, planar fabric in plutonic rocks S_IR {
Inclined welding foliation S_IWF |
Strike of primary planar fabric S_STPP }
Strike of welding foliation S_STWF ~
Vertical flow jointing S_VFJ
Vertical primary crystal alignment S_VPCA
Vertical primary planar fabric S_VPP
Vertical relict, planar fabric in plutonic rocks S_VR
Vertical welding foliation S_VWF
Major folds Anticline axial plane S_ACAP
Synclinal axial plane S_SCAP
Synform axial plane S_SFAP
18
7/27/2019 International Geological Symbol
24/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
STRUCTURAL
SYMBOLS
Minor folds Axis of minor anticline S_AMA
Axis of minor fold S_AMF
Axis of minor syncline S_AMS
Horizontal axial plane of minor fold S_HAPM
Horizontal axis of minor anticline S_HAMA
Horizontal axis of minor fold S_HAMF
Horizontal axis of minor fold, phase 1 S_HAM1 Horizontal axis of minor monocline S_HAMM
Horizontal axis of minor syncline S_HAMS
Inclined axial plane of minor fold S_IAPM
Locality with refolded minor folds S_LOC
Minor fold, low angle of plunge S_MFLA
Overturned anticline S_ANO
Overturned syncline S_SYNO
Plunge axis of minor fold S_PMF
Strike axial plane minor fold S_STAM
Vertical axial plane of minor fold S_VAPM
Vertical axis of minor fold S_VAMF
Vergence
Axis of minor fold showing direction of vergence S_AMFV
Dextral vergence of minor fold S_DXVM
Direction of vergence of minor fold S_DVMF
Neutral vergence of minor fold S_NVMF
Sinistral vergence of minor fold S_SVMF
19
7/27/2019 International Geological Symbol
25/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
Faults and related
structures
Fault movement FLT_MV d
Fault terminator FLT_TR f
Mineral vein dip S_MVFD g
Strike slip fault FLT_S e
Thrust barb TBARB h
OTHER SYMBOLS
Adit ADIT AAdit, abandoned ADIT_A B
Adit, unknown orientation ADIT_U C
Borehole BH D
Borehole, uncertain BH_UN F
Borehole, underground BH_UD E
Dip of igneous contact S_DIP
TFossil locality FOSSL J
Inclination of dyke S_IDY k
Location, with specific note SPNT W
Mineral locality MLOC L
Photo in BGS collection PHOTO N
Pit or mine shaft PIT O
Pit or mine shaft, abandoned, or denehole PIT_A P
Pit or mine shaft, abandoned, site uncertain PIT_U Q
Pit shaft, underground PIT_UD R
Rock slice, petrographic SLICE V
Site of former mine SFM U
Small isolated exposure EXP I
Spring or group of springs SPRING j
20
7/27/2019 International Geological Symbol
26/54
2.1 SYMBOLS INDEX LISTED BY CLASSIFICATION
CLASSIFICATION DESCRIPTION REF NAME SYMBOL
OTHER SYMBOLS
(continued)
Surface section SURF_S XSwallow hole SWH Y
Trench TRE [
Underground spot level UDSPOT \
Well BH_WL G
21
7/27/2019 International Geological Symbol
27/54
22
2.1
SYMBOLS
INDEX LISTED BY DESCRIPTION
2.2
7/27/2019 International Geological Symbol
28/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Acid tuff RS_ATF L A
Acid tuffite RS_ATTM
Adit ADIT A
Adit, abandoned ADIT_A B
Adit, unknown orientation ADIT_U C
Alluvial fan deposits ALV_FN G
Alluvial fan deposits, gravel ALV_FG F
Alluvium ALV AAlluvium, 1 ALV_1 B
Alluvium, clay ALV_C C
Alluvium, sand and gravel ALV_SG H
Anker Sand and Gravel SG_A a
Anticline axial plane S_ACAP
Anticline, overturned S_ANO
Aplite RS_APL K
Ardersier Silts Formation, glaciomarine deposits GLM_A
Arun Terrace Deposits, 1st RT_A1 K
Arun Terrace Deposits, 2nd RT_A2 L
Arun Terrace Deposits, 3rd RT_A3 M
Arun Terrace Deposits, 4th RT_A4 N
Arun Terrace Deposits, 5th RT_A5 O
Arun Terrace Deposits, 6th RT_A6 P
Arun Terrace Deposits, 7th RT_A7 Q
Axis of minor anticline S_AMA
Axis of minor fold S_AMF
Axis of minor fold showing direction of vergence S_AMFV
Axis of minor syncline S_AMS
23
7/27/2019 International Geological Symbol
29/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Baginton Sand and Gravel, glaciofluvial deposits GFL_B M B
Balderton Sand and Gravel RT_BDN YBanchory Till Formation (east Grampian Drift Group), till TIL_EG
Bank deposits MA_B H
Bank deposits, sand MA_BS L
Bank Farm Terrace RT_B U
Barroway Drove Beds, marine deposit MA_BDB D
Basic tuff RS_BTF\
Basic tuffite RS_BTT ]
Basin peat PEA_BA l
Bassingfield Sand and Gravel RT_BS b
Beach deposits, raised marine deposits RM_SB2 r
Beaconsfield Gravel RT_BC9 X
Beenham Grange Gravel RT_BG2 \
Beenham Stocks Gravel RT_BS7 c
Beeston Sand and Gravel RT_BEE Z
Belton Sand and Gravel RT_BEL [
Benholm Clay Formation, till TIL_BB
Birstall Sand and Gravel RT_BIR ^
Black Park Gravel RT_BPG a
Blackwater Terrace Deposits, 3rd RT_B3 V
Blackwater Terrace Deposits, 4th RT_B4 W
Blanket head / regolith HEAD_R K
Blanket peat PEA_BL m
Blockfield BLOC E
Blown sand BLS W
Blown sand, 1 BLS_1 X
24
7/27/2019 International Geological Symbol
30/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Bog iron ore ORE j B
Borehole BH DBorehole, uncertain BH_UN F
Borehole, underground BH_UD E
Boyn Hill Gravel RT_BH ]
Brackish lagoon RM_BL
Bramley Wey Terrace Deposits, 2nd RT_BW2 d
Brickearth BRK_ YBrooksby Sand and Gravel RT_BKY
Bucklebury Gravel RT_BK8 _
Bunny Sand and Gravel RT_BN
Burtle Beds, glaciofluvial deposits GFL_BU ~
Bytham Sand and Gravel RT_BTH
Caesar's Camp Gravel RT_CCG C
Calcareous tufa TUFA_C h
Cataclastic (metamorphic) RS_BEM N
Cataclastic rocks RS_BET O
Chelsfield Gravel SG_CH b
Cheltenham Sand and Gravel ALV_CH D
Chenier deposits MA_CH `
Clay, glaciolacustrine deposits GLA_C b
Clay-with-flints CWF G
Coastal barrier deposits MA_CB E
Coastal barrier, sand and gravel MA_SGC R
Coastal zone deposits, undifferentiated MA_CZ a
Combe Member (river terrace) RT_CM e
Coombe Deposits COD F
25
7/27/2019 International Geological Symbol
31/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Corbets Tey Gravel RT_CY C
Corrugated foliation S_ISCF c
Corrugated strata, low dip S_ISCL ?
Corrugated strike (general) vertical foliation S_VFC j
Corton Formation, glaciofluvial deposits GFL_CO
Corton Formation, till TIL_CO u
Crag with tail GL_CG \
Cross-bedding of foresets S_CBF ADartford Silt (brickearth) BRK_DA Z D
Daylesford Member, 1st river terrace RT_DM1 g
Debris cone DCON H
Delta deposits GLA_DL d
Delta deposits, sand GLA_DS e
Delta deposits, sand and gravel, raised marine RM_DS k
Delta deposits, sand and gravel, glacial GLA_DG c
Deltaic and / or fan deposits GFL_D N
Dextral vergence of minor fold S_DXVM
Diamicton DM
Diatomite DIAT a
Diatomite, fluvial DIAT_F b
Dip of igneous contact S_DIP T
Dip, general S_GDIP D
Dip, general, underground S_GDUP E
Dip, mineral vein S_MVFD g
Direction of cleavage S_DC Y
Direction of vergence of minor fold S_DVMF
Direction of younging S_DY C
26
7/27/2019 International Geological Symbol
32/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Dollis Hill Gravel RT_DH f D
Drumlithie Sand and Gravel (Mearns Drift Group), glaciofluvial
depositsGFL_MD
Dry valley deposits ALV_DV E
Dune-bedding S_DB B
Dunsmore Gravel SG_DG c
Eagle Moor Sand and Gravel RT_EM E
Eagle Moor Sand and Gravel, glaciofluvial deposits GFL_EM O
Eggington Common Sand and Gravel RT_EC hEnfield Silt (brickearth) BRK_ES [
Erratic ERRAT `
Etwall Sand and Gravel RT_ET j
Fall of glacial drainage channel GDC_FA B F
Fan deposits and / or deltaic GFL_D N
Fault movement FLT_MV d
Fault terminator FLT_TR f
Fault, strike slip FLT_S e
Fen peat PEA_FN n
Fen sand and gravel RT_FG k
Findern Clay GLA_FC f
Finsbury Gravel RT_FIN l
Flandrian deposits RM_FL l
Fluvial sand and gravel RT_FSG n
Foliated RS_FOL R
Fossil locality FOSSL J
Freeland Member river terrace RT_FR m
Fulbeck Sand and Gravel RT_FUL o
27
7/27/2019 International Geological Symbol
33/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
General dip S_GDIP D G
General dip, underground S_GDUP E
Gently inclined strata S_GIS F
Gently undulating strata S_GUS G
Gerrards Cross Gravel RT_GC r
Glacial deposits GL [
Glacial drainage channel, front GDC_F A
Glacial striae GLSTF
Glacial striae direction of ice flow GLSTI G
Glaciofluvial deposits, undifferentiated GFL K
Glaciolacustrine deposits GLA a
Glaciolacustrine deposits 1 GLA1 k
Glaciolacustrine deposits 2 GLA2 l
Glaciomarine deposits GLM mGlen Dye Silts Formation (East Grampian Drift Group),
glaciolacustrine depositsGLA_EG
Godalming Wey Deposits, 1a river terrace deposit RT_G1A p
Godalming Wey Deposits, 1b river terrace deposit RT_G1B q
Godalming Wey Deposits, 1st river terrace deposit RT_GW1 s
Godalming Wey Deposits, 2nd river terrace deposit RT_GW2 t
Godalming Wey Deposits, 3rd river terrace deposit RT_GW3 u
Grandiorite X RS_GRX S
Gravelly head HEAD_G J
Hackney Gravel RT_HA x H
Hanborough Member river terrace RT_H4 w
Hathern Gravel SG_HAT d
Head 1 HEAD1 M
Head 2 HEAD2 N
28
7/27/2019 International Geological Symbol
34/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Head or hillwash HEAD I H
Head, Burton Lazars HEADBL pHead, Colluvium HEAD_C q
Head, Little Dalby HEADLD r
Head, Pen Hill HEADPH s
High raised marine deposits RM_2 g
Highest raised marine deposits RM_3 h
Highly inclined strata S_ISH L
Hill peat PEA_H o
Holderness Formation, glaciofluvial deposits GFL_HO
Holderness Formation, till TIL_HO v
Holme Pierrepont Sand and Gravel RT_HP z
Horizontal axial plane of minor fold S_HAPM
Horizontal axis of minor anticline S_HAMA Horizontal axis of minor fold S_HAMF
Horizontal axis of minor fold, phase 1 S_HAM1
Horizontal axis of minor monocline S_HAMM
Horizontal axis of minor syncline S_HAMS
Horizontal cleavage S_HC Z
Horizontal flow jointing S_HFJ w
Horizontal foliation S_HF k
Horizontal joint S_HJ
Horizontal lineation S_HLI
Horizontal overturned strata S_HOS H
Horizontal primary crystal alignment S_HPCA s
Horizontal primary planar fabric in igneous rocks S_HPPF t
Horizontal relict, planar fabric in plutonic rocks S_HR u
29
7/27/2019 International Geological Symbol
35/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Horizontal strata S_HS I H
Horizontal welding foliation S_HWF v
Hummocky glacial and morainic deposits GL_HMC ]
Ice-contact, glaciofluvial deposits GFL_IC P I
Ilford Silt (brickearth) BRK_IL \
Inactive scree / talus SCRE_I T
Inclination of dyke S_IDY k
Inclined strata (highly) S_ISH LInclined axial plane of minor fold S_IAPM
Inclined cleavage S_IC [
Inclined cleavage, sandstone S_ICS \
Inclined flow jointing S_IFJ w
Inclined foliation S_IF o
Inclined joint S_IJ
Inclined primary crystal alignment S_IPCA x
Inclined primary planar fabric S_IPP y
Inclined primary planar fabric, overturned S_IPPO z
Inclined relict, planar fabric in plutonic rocks S_IR {
Inclined strata (gently) S_GIS F
Inclined strata 1 S_IS1 J
Inclined strata 2 S_IS2 K
Inclined strata, overturned S_ISO M
Inclined strata, uncertain S_ISU O
Inclined strata, underground S_ISUD R
Inclined welding foliation S_IWF |
Interglacial lacustrine deposits IGL_LA D
Interglacial deposits, undifferentiated IGL A
30
7/27/2019 International Geological Symbol
36/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Interglacial fluvial deposits IGL_FL C I
Interglacial marine deposits, undifferentiated IGL_MA EInterglacial marine shore beach deposits IGL_MS F
Intertidal RM_IN m
Intertidal deposits, undifferentiated MA_I b
Irish Sea Ice Sheet, (sheet deposits) glaciofluvial deposits GFL_IT
Irish Sea Ice sheet, till TIL_I
Irish Sea Ice Sheet, undifferentiated, glaciofluvial deposits GFL_I Kempton Park Gravel RT_KP { K
Kettle hollow KH H
Knighton Sand and Gravel RT_KN |
Lacustrine delta deposits LAC_D ~ L
Lacustrine deposits LAC }
Lacustrine deposits 1 LAC1
Lacustrine deposits 2 LAC2
Lacustrine deposits 3 LAC3
Lacustrine shoreface and beach deposits LAC_SB
Lacustrine shoreface and beach deposits 5 LAC_S5
Landslip, small area MSM_L P
Langley Silt (brickearth) BRK_LS ]
Late Glacial, raised marine deposits RM_LG |
Leaves Green Gravel RT_LG }
Leen Sand and Gravel RT_LN
Little Hereford river terrace RT_H v
Locality with refolded minor folds S_LOC
Location with specific note SPNT W
Lochton Sand and Gravel Formation (East Grampian Drift Group) GFL_EG
31
7/27/2019 International Geological Symbol
37/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Loess LOESS _ L
Low raised marine deposits RM_1 f
Lowestoft Formation, glaciofluvial deposits GFL_L
Lowestoft Formation, till TIL_L w
Lynch Hill Gravel RT_LH ~
Made ground, above surface, small area ART_AS C M
Made ground, backfilled pit, small area ART_BP A
March gravels, raised marine deposits RM_MG o
Marine band MA_MB I
Marine beach deposits MA_BE C
Marine deposits, sand and gravel MA_SG Q
Marine deposits, undifferentiated MA_MA G
Marsh till TIL_M r
Microdiorite RS_P W
Microgranite RS_FG P
Mill of Forest Formation (Mearns Drift Group), till TIL_MD
Mineral locality MLOC L
Mineral vein dip S_MVFD g
Minor fold, low angle of plunge S_MFLA
Moreton Member, glaciofluvial deposits GFL_MT Q
Moreton Member, till TIL_MT s
Mud deposits MA_M F
Muddy sand and gravel, glacial deposits GL_MSG ^
Mylonitic (metamorphic) RS_MU1 V
Mylonitic rocks RS_MU U
32
7/27/2019 International Geological Symbol
38/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Netley Heath marine deposits MA_NET N
Neutral vergence of minor fold S_NVMF
Nor Valley Clay, raised marine deposits RM_NV p
Nordelph Peat PEAT_N e
Northmoor Member river terrace RT_N1
Oadby Member, glaciofluvial deposits GFL_OD R O
Oadby Till TIL_OD x
Oadby Till (Lias-rich) TIL_OL yOadby Till (Trias-rich) TIL_OT
Ockbrook Sand and Gravel RT_Ock
Overstrand Formation, glaciofluvial deposits GFL_O
Overstrand Formation, till TIL_O |
Overturned (horizontal) strata S_HOS H
Overturned anticline S_ANO
Overturned inclined strata S_ISO M
Overturned syncline S_SYNO
Peat PEAT c P
Peat flow PEAT_F d
Pebbly clay and sand PBS Q
Pegmatite RS_PEG X
Photo in BGS collection PHOTO N
Pit or mine shaft PIT O
Pit or mine shaft, abandoned, or denehole PIT_A P
Pit or mine shaft, abandoned, site uncertain PIT_U Q
Pit shaft, underground PIT_UD R
Plunge axis of minor fold S_PMF
Plunging lineation S_PLI
33
7/27/2019 International Geological Symbol
39/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Postglacial, raised marine deposits RM_PG q P
Pre-Devensian GFL_PD SPseudotachylitic RS_KAP T
Raised marine delta deposits RM_D j R
Raised marine deposits RM e
Raised marine deposits, clay RM_C {
Raised marine deposits, high RM_2 g
Raised marine deposits, highest RM_3 h
Raised marine deposits, low RM_1 f
Raised marine deposits, mud RM_M n
Raised tidal flat deposits of Flandrian age RM_TRF z
Rhyolite RS_R Y
Rissington Member river terrace RT_RM1
River Avon Deposits, 1st river terrace RT_AV1 S
River Avon Deposits, 2nd river terrace RT_AV2 T
River Severn Deposits, 1st river terrace RT_S1
River Severn Deposits, 2nd river terrace RT_S2
River Severn Deposits, 3rd river terrace RT_S3
River terrace deposits, 1st RT01
River terrace deposits,1a RT01A
River terrace deposits,1b RT01B
River terrace deposits,1c RT01C
River terrace deposits, 2nd RT02
River terrace deposits, 1st - 2nd RT01-2
River terrace deposits, 2nd - 3rd RT02-3
River terrace deposits, 3rd RT03
River terrace deposits, 4th RT04
34
7/27/2019 International Geological Symbol
40/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
River terrace deposits, 5th RT05 R
River terrace deposits, 5th - 6th RT05-6 River terrace deposits, 6th RT06
River terrace deposits, 7th RT07
River terrace deposits, 8th RT08
River terrace deposits, 9th RT09
River terrace deposits, 10th RT10
River terrace deposits, 11th RT11 River terrace deposits, 12th RT12
River terrace deposits, 13th RT13
River terrace deposits, 14th RT14
River terrace deposits, 15th RT15
River terrace deposits, undifferentiated RT_U
River Worfe Deposits, undifferentiated RT_WF
River Worfe Terrace Deposits, 1st RT_WF1
River Worfe Terrace Deposits, 2nd RT_WF2
River Wye Terrace Deposits, 1st RT_WY1
River Wye Terrace Deposits, 2nd RT_WY2
Roche moutonne GL_RM D
Roche moutonne with striae GL_RMS E
Rock slice, petrographic SLICE V
Rockhead or bedrock ROCK I
Rother Terrace Deposits, 1st RT_RO1
Rother Terrace Deposits, 2nd RT_RO2
Rother Terrace Deposits, 3rd RT_RO3
Rother Terrace Deposits, 4th RT_RO4
Rother Terrace Deposits, 5th RT_RO5
35
7/27/2019 International Geological Symbol
41/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Rother Terrace Deposits, undifferentiated RT_ROU
Rotherby Clay, glaciolacustrine deposits GLA_RO Ruddington Moor Till TIL_RM }
Saltmarsh deposits MA_SM W S
Sand and gravel, age uncertain SG_U f
Sand and gravel, glaciofluvial deposits GFL_SG W
Sand and gravel, glaciomarine deposits GLA_SG j
Sand and gravel, raised marine deposits RM_SG u
Sand and silt deposits MA_SSI X
Sand deposits MA_S K
Sand in clay-with-flints CWF_S D
Sand, glaciolacustrine deposits GLA_S _
Sand, tabular or sheet deposits MA_SST Y
Sandy headHEAD_S
LScree / talus SCRE R
Shakenhurst Terrace RT_S
Sheared rock S_SR b
Sheared rock (igneous and metamorphic) RS_SH Z
Sheet deposits, 1st, glaciofluvial deposits GFL_S1 T
Sheet deposits, 2nd, glaciofluvial deposits GFL_S2 U
Sheet deposits, 3rd, glaciofluvial deposits GFL_S3 V
Sheet deposits, glaciofluvial deposits GFL_SH X
Shell bank (mussel band) MA_SHB U
Shell marl SLM g
Shepperton Gravel RT_SH
Sherborne Member, 1st terrace RT_SM1
Sherborne Member, 2nd terrace RT_SM2
36
7/27/2019 International Geological Symbol
42/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Shore beach deposits of Flandrian age RM_SBF s S
Shoreface deposits MA_SF d
Shoreface deposits, sand MA_SFS P
Shoreface deposits, sand and gravel MA_SSG S
Silchester Gravel RT_SL6
Silt and clay, 1st, glaciolacustrine deposits GLA_M1 h
Silt and clay, glaciolacustrine deposits GLA_M g
Silt and clay, raised marine deposits RM_SC t
Silt deposits MA_SI V
Single sided glacial drainage channel GDC_S C
Sinistral vergence of minor fold S_SVMF
Site of former mine SFM U
Small isolated exposure EXP I
Spring or group of springs SPRING j
Stanmore Gravel SG_ST e
Storm beach deposits MA_SB c
Storm beach deposits, 1 MA_SB1 M
Storm beach deposits, gravel MA_SBG O
Strike axial plane minor fold S_STAM
Strike of cleavage S_STC ^
Strike of foliation S_STF l
Strike of primary planar fabric S_STPP }
Strike of strata S_STS W
Strike of welding foliation S_STWF ~
Strike slip fault FLT_S e
Submerged forest PET_SF f
Subtidal, raised marine deposits RM_SU v
37
7/27/2019 International Geological Symbol
43/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Summertown Radley Member, 2nd terrace RT_SR2 S
Supratidal deposits undifferentiated MA_SU T
Surface section SURF_S X
Surrey Hill Gravel RT_SHG
Swallow hole SWH Y
Synclinal axial plane S_SCAP
Syncline, overturned S_SYNO
Synform axial plane S_SFAP Syston Sand and Gravel RT_SYS
Tabular or sheet deposits MA_ST Z T
Talus / inactive scree SCRE_I T
Talus / scree SCRE R
Taplow Gravel RT_TAP
Terrington Beds, raised marine deposits RM_TB w
Thatcham Gravel RT_TH3
Thrussington Till TIL_TH {
Thrust barb TBARB h
Tidal flat deposits MA_TF ^
Tidal flat deposits, 1 MA_TF1 [
Tidal, river or creek deposits MA_TR \
Tidal, river or creek deposits, mud MA_TRM ]
Tidal, river or creek deposits, mud and gravel MA_TMG J
Tidal, river or creek deposits, raised marine deposits RM_TF x
Till or boulder clay TIL n
Tottenhill Gravels, raised marine deposits RM_TO y
Trench TRE [
Tufa TUFA k
38
7/27/2019 International Geological Symbol
44/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Underground spot level UDSPOT \ U
Undulating bed, inclined S_UIS T
Undulating cleavage, inclined S_UCI _
Undulating foliation S_UF m
Undulating strata (gently) S_GUS G
Undulating vertical strata S_UVS U
Upton Sand and Gravel SG_UP g
Ury Silts Formation (Mearns Drift Group), glaciolacustrine deposits GLA_MD Valley bottom head HEAD_V t V
Vertical axial plane of minor fold S_VAPM
Vertical axis of minor fold S_VAMF
Vertical cleavage S_VC `
Vertical cleavage in sandstone S_VCS a
Vertical flow jointing S_VFJ
Vertical foliation S_VF n
Vertical foliation, general corrugated strike S_VFC j
Vertical joint S_VJ
Vertical lineation S_VLI
Vertical primary crystal alignment S_VPCA
Vertical primary planar fabric S_VPP
Vertical relict, planar fabric in plutonic rocks S_VR
Vertical strata S_VS V
Vertical strata, undulating S_UVS U
Vertical welding foliation S_VWF
Wanlip Sand and Gravel RT_WAN W
Warp ALV_W I
Washover deposits MA_WO _
39
7/27/2019 International Geological Symbol
45/54
2.2 SYMBOLS INDEX LISTED BY DESCRIPTION
DESCRIPTION REF NAME SYMBOL A-Z
Well BH_WL G W
Well Hill Gravel SG_WH hWestland Green Gravel RT_WG
Westmill Lower Gravel RT_WM
Whatton Sand and Gravel RT_WH
Wigston Sand and Gravel, glaciofluvial deposits GFL_WI
Winter Hill Gravel RT_WH7
Wolston Clay (brickearth) BRK_WC ^Wolston Sand and Gravel, glaciofluvial deposits GFL_WO Z
Wolvercote Member river terrace RT_WO3
Woodford Gravel RT_WD
Woolford Heath Member, glaciofluvial deposits GFL_WL Y
Worked ground, small area ART_WG B
Wragby, Calcethorpe & Belmont, till TIL_C q
40
7/27/2019 International Geological Symbol
46/54
41
AREA ORNAMENTS
LISTED BYDESCRIPTION
3
7/27/2019 International Geological Symbol
47/54
.
.
.
.
.
.
.
.
.
.
.
.
.
.
..
..
..
..
..
..
..
..
.
.
3 AREA ORNAMENTS
Gneiss
GNEISS
GRAV
Gravel
Graphiticschist
GR_SCH
Greywacke
GWACKE
Gypsum
GYPS
.
.
.
.
CHLK
Chalk
AGGLOM(reference name)
Agglomerate
ANHY CLST
Anhydrite Claystone
ARE_ST CONG
ConglomerateArenaceousseatearth
Coursedrubble
CRSRB
Crushed rock
CR_RCK
BREC
Breccia
Calcareoustufa
CALTUF
CAT
Cataclasticrock
BCLAY
Boulder clay
Blown sand
BLSND
Disturbedground
DIST
Dolomite
DOLOM
FOUND
Founderedstrata
Generaloverprintstipple
GRAN_V
Graniteveining
Granite
GRAN
LISTED BY DESCRIPTION
STIPP
42
7/27/2019 International Geological Symbol
48/54
3 AREA ORNAMENTS
LMST
Limestone
IG
Igneous
Massivelimestone
LMST_M
Metasediment
METASD
Mudstone
MDST
Marble
MARBLE
Limestonebeds
LMST_B
Lava and tuff
LAV_TU
INFILL
Landscapedground
LASC
LAND
Lava
LAVA
.
.
.
.
Limestonebands
LMST_D
LMST_T
Limestonethin bedpartings
.
.
.
MADE
Madeground
MARINE
MIGM
Migmatisation
LMST_G
Mixed groupwithcalc-schist/limestone
Ooidallimestone
LMST_O
LISTED BY DESCRIPTION
(reference name)
Landslip
Marine
overprint(white)
Infilledground
ST_YEL
ST_BLK
ST_CYN
ST_OR
ST_MAG
Overprintstipplefor variousrock typesMagenta
Overprintstipplefor variousrock typesYellow
Overprintstipple forvariousrock typesBlack
Overprintstipple
for variousrock typesCyan
Overprintstipplefor variousrock typesOrange
43
7/27/2019 International Geological Symbol
49/54
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
3 AREA ORNAMENTS
LMST_S
Sandylimestone
Siltysandstone
SLTSND
SLTST
Siltstone
TUFF
Tuff
Turbidite
TURB
GNE_RW
Reworkedgneisses
LMST_P
Pisoidallimestone
LMST_R
Sodium salt
SALT
Sand
SAND
SHALE
Shale
PEBBLE
Pebbles
.
.
.
.
.
PELITE
Pelite
Pegmatiteor veincomplexes
PEG
PSAMM
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
QUART
Quartzite
RNRBL
Randomrubble
Rubblylimestone;poorlybedded
SHMRL
Shell marl
SLTMD
Siltymudstone
LISTED BY DESCRIPTION
(reference name)
Psammite
RECL
Reclaimedground
XENO
Xenoliths
WORK
Workedground
Sandstone
SNDST
44
7/27/2019 International Geological Symbol
50/54
45
LINE STYLES
LISTED BY DESCRIPTION
4
7/27/2019 International Geological Symbol
51/54
Base of lava flow
Axis of large-scale glacial flute
Axis of large-scale glacial gouge
Backfeature marking former coastline,arrowheads denote uphill side
Backfeature marking former lake margin,arrowheads denote uphill side
Axial plane trace of major recumbant fold
Axial plane trace of major anticline
Axial plane traces of closely spaced anticline/syncline pair
Axial plane trace of major antiform
Backfeature of terrace margin, arrowheadsdenote uphill side
Buried channel or valley margin
Buried cliffline, crossmarks on beach side
Coal, inferred
Axial plane trace of major syncline
Axial plane trace of major synform
Coal, observed
Axial plane trace of major reclined or vertical fold
Axial plane traces of closely spaced major antiform/synform pair
Coal seam, washout
Coal seam contour
V
V
V
4 LINE STYLES LISTED BY DESCRIPTION
Aeromagnetic/Bouguer anomaly
Cementstone
Coal, sub-Triassic
Cliffline, crossmarks on beach side
cm cm cm cm
46
7/27/2019 International Geological Symbol
52/54
Crestline of elongate mound
Crestline of linear feature
Fault, normal inferred
Fault, normal observed
Fault shearing zone, observed
Fault brecciation zone, inferred
Fault brecciation zone, observed
Fault shearing zone, inferred
Fossil horizon, lingula band
Fossil horizon, eustheria band
Fault, thrust or slide, inferred
Fault, thrust conjectural
Fault, thrust observed
Fault, strike-slip
Fault, reverse
Fossil horizon, brachiopod band
Fossil horizon, algal band
Fossil horizon, coral band
Geological boundary, drift
Fossil horizon, planolites band
4 LINE STYLES LISTED BY DESCRIPTION
Geological boundary, artificial
Incrop of fault at unconformity (sub-Triassic)
47
B B B B B
C C C C C
E E E E E
P P P P P
Crestline of esker (blue, orange or magenta)
Drumlin or dune line at base of mound
7/27/2019 International Geological Symbol
53/54
Igneous cutting margin, observed
Igneous plutons
Limit of diorite / grandiorite
Glacial meltwater channel margins
Limit of granite vein complex
Limit of glacial advance, Scottish readvance limit
Ironstone, observed
Lineament, probably fracture related
Limit of granite / pegmatite vein complex,within area of veining
Glacial meltwater or overflow channel, centre line
Igneous cutting margin, crossmarks on sideof younger rock, inferred
Ironstone, inferred
Limit of transgressive pegmatite veins,
within areas of veins
Limit of glacial advance, Gosforth oscillation limit
VV V V V V V V V V V V V V V
4 LINE STYLES LISTED BY DESCRIPTION
Hydrothermal
Incrop of coal
Incrop of marine band
Kettle hole
Geological boundary, mass movement
Geological boundary, solid observed
Geological boundary, solid inferred
Geological boundary, solid intrusive
Geological boundary, solid intrusive observed
Limit of migmatisation, towards migmatites
48
H H H H
7/27/2019 International Geological Symbol
54/54
Marine band
Mussel band
Outer edge of terrace
Tonstein
Trace of lower hinge of major monocline
Marked break in slope, arrowheads denote uphill side
al
Pb
Oil-shale, inferred
Oil-shale, observed
Mass Movement boundary
Mining area, subsurface
Line of split coal seam, ornament on split side
Man made deposit boundary
Mineral vein, with name of mineral
Quarry
v v v
sa sa sa sa
4 LINE STYLES LISTED BY DESCRIPTION
Sandstone bed
Subsidence hollow, drift (not corresponding)
Subsidence hollow, corresponding to drift boundary
Subsidence hollow, solid (not corresponding)
Subsidence hollow, corresponding to solid boundary
Magnetic layer or boundary
Metamorphic aureole, towards intrusion
Metamorphic zone boundary with mineral or zone number