Langkawi Part 1

8/18/2019 Langkawi Part 1

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LANGKAWI PART 1


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GEOLOGICAL STRUCTUR

OF LANGKAWIPresented by:GROUP 14

Muhamad Ihsan

Mohd Ajmal

Daniel Tan

Fatin Zulia

Nur Ain Wahida

Siti Namirah

Natasha Amira


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INTRODUCTION• Lan!a"i is an ar#hi$elao o% && islands' a$$ro(imatel) *1 !m north"est o% th

Kedah on Peninsula Mala)sia

• +ldest ro#! %ormation

• +% the && islands' onl) %our are inha,ited

• Made u$ o% -.e %ormation/

a0 Ma#hin#han Formation +ldest %ormation0

,0 Setul Formation

#0 Sina Formation

d0 2hu$in Formation

e0 Gunun Ra)a Granite Formation 3ounest Formation0


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Kis

t!


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#AC$INC$ANGFOR#ATION


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PASIR T4NGK+RAK


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5 Po#!et o% the "hole sand) ,ea#h %ormed rued ro#!) ,ea#om$risin sandstone and shale6

- The entl) di$$in and "ar$in sandstone and shale ,elou$$er $art o% Ma#hin#han %ormation6

LOAD CASTS

- De%ormational stru#tures' rather than erosional stru#tures

- +##ur #ommonl) alon the ,ases o% sandstone ,eds that mudstone or shale ,eds6

-

Rane in si7e' and ma) ,e asso#iated "ith other de%ormastru#ture li!e 8ame stru#tures6

- It settins "here "here "ater5saturated mudd) sediment

,uried ra$idl) ,) #oarser sand)0 sediments6


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5 Sandstone #ontain internal #ross ,eddin and ,eddinto$ ri$$le mar!s6

- While the inter,edded sandstone 9 shale e(hi,its more

interestin load related sedimentar) stru#tures ranin%rom

a0load #ast'

,0 ,eddin'

#0ta%onii are #ontrolled ,) the join s)stems'

%ra#ture $atterns and dire#tions o% the sea5s$ra)s6

d0 8ame stru#ture

e0 Water es#a$e stru#ture

%0 Ri$$le mar!s


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T4L:K DATAI


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5 Types of rock at this location are sedimentary rock.

- Sandstone is interbedded with shale.

- This location is Machinchang Formation.

-Oldest rock formation in Langkawi. Age is about !-! Million

"ears Ago

-made of fine # to medium # grained sandstone with subordinate

coarse-grained sandstone$ conglomerate and shale accumulating a tot

thickness of up to %&'!meter.


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- ;ased on our inter$retation' at this $la#e hsome %ra#ture

- sur%a#es alon "hi#h ro#!s or minerals ha.,ro!en there%ore sur%a#es a#ross "hi#h thematerial has lost #ohesion6

- #aused ,) stress e(#eedin the ro#! stren#ausin the ro#! to lose #ohesion alon its"ea!est $lane and dis$la#ement o##urred6


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- Ne(t' "e #an see joints there

- Fra#tures "ithin the ro#! "hi#h there has

,een no a$$re#ia,le dis$la#ement $aralto the %ra#ture and onl) sliht mo.ementto the %ra#ture $lane

5 Most a,undant stru#tural element in ear#rust

-

2ommonl) joints %orm ,e%ore %aults "hi#are later rea#ti.ated in shear

- In Sedimentar) ro#!s most joints are.erti#al or ,ed normal

- S)stemati# joints/ $lanar' $arallel

orientation and ha.e reular s$a#in


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#a%!i%!an& #'"nt

• L'%ati'n Des%riti'n and !ist'ry : Gunun Mat 2hin#anstraddles on the north"est $ortion o% Pulau Lan!a"i6 GununMat 2hin#an is not the hihest mountain in Lan!a"i6 Su#ha##olade oes to its neih,ourin Gunun Ra)a at ==>m a,osea le.el6 The massi.e mountain rane is estimated to ,e,et"een ?*>5**> million )ears old #onsistin o%metamor$hosed ro#!s "ith uni@ue e#oloi#al ha,itats %or.arious s$e#ies o% 8ora and %auna6 At su#h ae' Gunun Mat2hin#an ta!es the #entre $ie#e in the re#ent attem$t ,) theo.ernment %or Pulau Lan!a"i to ,e a##orded a :N4S2+

Geo$ar! status6 It "as a,le to o,ser.e at #lose rane theuni@ue ro#! %ormations eoloi#al %eatures o% the Ma#hin#anrane' "hi#h "as %ormed *>> million )ears ao durin the2am,rian $eriod' in eoloi#al terms6

• Ge'('&i% str"%t"re: Mountain' #li' #ross ,eddin'"eatherin' erosion and "ater%all are seen


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Ma#hi#han Mount


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Telaa Tujuh Water%all


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SETUL FOR#ATION


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Kilim' Lan!a"i

• 2oordinate

N >BC ?E 6&EC

4 >&&C *1E 116BEC

4le.ation 1m

• Di$Hstri!e o% the area 1H?*

• Setul Formationdar! 9 re) limestone0

• It is a meta5limestone


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Geoloi#al Stru#ture

• ;eddin

• uart7 .ein


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Pi#tures

Fiure * / uart7 .ein

Fiure B / ;eddin


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Ana! Ti!us Island

• Fossil Island' or Pulau Ana! Ti!us is an island

$art o% the Kilim eo$ar!s6• It is remnant island lo#ated at the southern m

o% Pulau Lanun6

• It is made u$ o% dar! #oloured 'moderate to th

,edded limestone re$resentin the 4arl) +rdLimestone Mem,er o% the Setul Formation

• It is .er) ri#h %ossils'$arti#ularl) astro$ods a#e$halo$ods6


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• There are massi.e ro#! stru#ture "hi#h is %

%ossils dead im$ressions o% on#e li.in orthat are some ?=> million )ears old6

• This is the reason "h) this island is !no"nFossil Island6 +n to$ o% the stair#ase' there

small $lat%orm %rom "here )ou #an .ie" thand the ro#!s #learl)6


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SETUL)SINGA FOR#ATIO


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Telu! mem$elam is lo#ated in North o% PulaLanun6 the Telu! Mem$elam there are t"%ormation on the that $arti#ular area "hi#

are Setul %ormation and Sina %ormation


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• So are there must ,e a #onta#t ,et"een ,oth o% them6 A

"al!in "e #he#! the dierent ,et"een the litholoiesthe ,ea#h ' "e had %ound that there are #onta#t ,et"eelitholoies that ,e the $ro.es ,e#ause Setul %ormation limestone that rea#t to J2l "hile Sina %ormation are %mudstone that not rea#t to J2l6So'due to di#ulties to ,eddin alon the ,ea#h ,e#ause the it "as undero "e

,) "a.e e.er) da)6So 'the ,eddin o% ro#! alon the ,e#an ,e #hara#teri7ed ,) une($osed6We de#ide to test tho% litholoies ,) test usin J2l to out#ro$ that "e -nd ai% that area do not ha.e e($osed ,eddin o% ro#!6


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• As re%erred to eoloi#al ma$ 'there is said that

,oundar) #an ,e seen in the north the PulauLanunTelu! Mem$elam0'"here it "as o.erlainlate De.onian red,ed o% Sina %ormation6

• Setul %ormation is the older than Sina %ormatio,e#ause Setul %ormation is %rom earlu +rdo.i#ian

Middle De.onian "hile the Sina Formation is laDe.onian to earl) Permian6;ut Setul %ormation isthe Sina %ormation ,e#ause the thrust %ault are

Th - th li t th t


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The -ure the limestone thatundero hih $ressure and -nall)%orm too man) %ra#ture and %ault

and sho" dierent o% litholoies


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• There also has area that manro.e s"am$

ro"6• This im$ortant to sustain the e#os)stem %ro

erosion due to "a.e %rom o#ean6

• ;esides that 'in that lo#ation has a %e" are

#an %ossil6• The t)$es o% %ossils are ,ra#hio$od and tri


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SINGA FOR#ATION


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PULAU *ERAS *ASA$

Formation / Sina Formation


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Formation / Sina Formation

16 2oordinate /N >B1116>

4 &&?1>61

6 4le.ation /1m a,o.e sea le.el6 Stri!e and di$ /

• 1=H>

• 1=H1&

?6 Major stru#tures/ ;eddin

* Des#ri$tion o% lo#ation/


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*6 Des#ri$tion o% lo#ation/

• Predominated ,) dar!5#olored shaleand siltstone

•

Formation thi#!ness / '1>>m• Lo"er ,oundar) is o.erlain ,) Setul

Formation in the northern $art o%Pulau Lanun

•

:$$er ,oundaries Pulau Sina ;esaO Pulau Sina Ke#hil0 is o.erlain ,)2hu$in Limestone

B Des#ri$tion o% ro#! /


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B6 Des#ri$tion o% ro#! /

There is an a,undan#e o% #al#ite .ein the out#ro$6 The #al#ite .ein haintruded into the mudstone6 2al#it.ein is re#oni7ed a%ter testin it "itJ2L and $rodu#e a .iorous rea#tio

This .ein o% #al#ite "as %ormed a8uids entered an o$en s$a#e %ra#tu

durin alteration o% the ro#!6

M d i h l i i


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Mudstone "ith #al#ite .ein

;eddin o% the mudstone "ith its #orres$


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;eddin o% the mudstone "ith its #orres$thi#!ness 9 16*#m

Documents

Langkawi Part 1