SITE 962 HOLE B CORE 1H CORED 0.0-7.5 mbsfSITE 962 HOLE B CORE 2H CORED 7.5- 17.0 mbsf Graphic Lith. Structure Description •l 4_ 5_ N2 5GY 4/1 To N2 N2 5GY 4/1 To N2 N2 5GY 2/1 N2

SITE 962 HOLE B CORE 1H CORED 0.0-7.5 mbsf

GraphicLith. Structure Description

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SILTY CLAY WITH OPAL and SILTYCLAY WITH MICRITE

Major Lithologies:Highly variable sediment, withdominantly SILTY CLAY WITH OPALand SILTY CLAY WITH MICRITEinterbeds is massive to slightlybioturbated. Slightly lighter gray bedsin Section 3 are composed of CLAYWITH NANNOFOSSILS ANDMICRITE. The top 18 cm comprisesdark brown SILTY CLAY WITHNANNOFOSSILS AND DIATOMS, andthin beds of CLAY WITHNANNOFOSSILS in Section 1. Lightmottles from bioturbation in Sections 1and 4 comprise CLAY. Green,glauconitic laminae appear to benascent hardgrounds.

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SITE 962 HOLE B CORE 2H CORED 7.5- 17.0 mbsf


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4_

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5GY4/1ToN2

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5GY2/1

N2

5GY4/1ToN2

N2

PYRITIC CLAY WITH SILT ANDPLANT DEBRIS and SILTY CLAYWITH PLANT DEBRIS

Major Lithologies:This interval comprises black to darkgray PYRITIC CLAY WITH SILT ANDPLANT DEBRIS interbedded with darkto medium greenish gray SILTY CLAYWITH PLANT DEBRIS. Locally, thingreen, greenish gray laminations arepresent which contain fine-grainedglauconite. These are especially welldeveloped in Section 3, 40, 54, 63,and 84 cm. Pyrite, occurring asframboids and clay-sized crystals, isdisseminated throughout and locallycomprises up to 25% of sediment.Microfossils and microflora are absentfrom these lithologies except inSection 5, 40-55 and 130-150 cm.

962B-2H 1

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Description

CLAY and NANNOFOSSIL CLAY

Major Lithologies:The core is made up of an irregularalternation of darker greenish gray(5GY 4/1 or 5G 4/1 to 5GY 5/1) CLAYand lighter greenish gray (5GY 5/1 to5GY 6/1) NANNOFOSSIL CLAY. Bothare slightly bioturbated throughout.The darker clay often makes up 1-cm-thick layers and irregular mottles atthe boundaries between the twolithologies.

Minor Lithologies:Abundant grayish green (5G 4/2)layers consisting of NANNOFOSSILGLAUCONITE CLAY WITH FORAMSAND MICRITE occur throughout thecore. These layers are up to 2 cmthick, coarser and more induratedthan the surrounding sediment andprobably represent hardgrounds. Theyare particularly abundant in Sections 2through 5 where they mostly occurwithin the darker clays. Dark greenishgray (5GY 4/1) structureless layers ofCLAYEY NANNOFOSSIL OOZEWITH FORAMS with a slight brownishtinge occur in Section 3, 67-75 and113-122 cm. In the highly disturbedtop of Section 1, 5-10 cm, there is alarge, irregular spot of dark gray (N3)pyrite claystone similar to Core 159-962B-2H.

962B-3H 1

SITE 962 HOLE B CORE 4H CORED 26.5 - 36.0 mbsf


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10Y5/4

2.5Y5/2

CLAY WITH QUARTZ SILT andCLAY WITH ZEOLITE

Major Lithologies:Dominant lithology is greenish gray(5GY 5/1) CLAY WITH QUARTZ SILTand light olive brown (2.5Y 5/4) CLAYWITH ZEOLITE with some enrichmentof iron oxides (goethite). The lowerpart of the core, downcore fromSection 3, 83 cm consists of greenishgray (10Y 4/2 to 10Y 5/4) moderatelyburrowed CLAY WITH QUARTZ SILT.Burrows are generally darker andcontain pyrite and iron oxides.

Minor Lithologies:The upper part of the core is darkgreenish gray (5GY 4/1), bioturbatedCLAY WITH PYRITE AND QUARTZSILT. This clay contains fewglauconitic bands and is also presentin Section 5, 0-20 cm. A few cm-thicklayers of olive brown (2.5 Y 4/4)GOETHITE CLAY are present inSection 2, 22-150 cm. Section 7 andCore Catcher consist of structurelessgrayish brown (2.5Y 5/2) CLAY WITHGOETHITE. Some disseminated pyriteoccurs throughout the core and onelarger concentrated spot of pyrite andgoethite is present in Section 3,114-118 cm.



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10Y5/2To

7.5GY6/2

CLAYSTONE WITH QUARTZ SILTand CLAYSTONE

Major Lithologies:This core consists of CLAYSTONEWITH QUARTZ SILT, which occurs asgoethite-bearing, light olive brown toolive brown (2.5Y 5/4 to 2.5Y 4/4)horizons alternating with olive-colored(5Y 4/4 to 5Y 5/3) horizons, fromSection 1 to Section 6, 105 cm. Thelowermost part of the core comprisesolive gray to grayish green (10Y 5/2 to7.5GY 6/2) CLAYSTONE. The core isslightly bioturbated, and subhorizontalto steeply dipping burrows are eitherfilled with pyrite or goethite. Pyrite alsooccurs as disseminated framboids ornodules. Shell fragments, mostly offoraminifers, occur in CLAYSTONE.Sections 5 and 6 have microfaults.

General Description:In Section 5, several spots andburrows in CLAYSTONE WITHQUARTZ SILT have the grayish greenhue of CLAYSTONE. The age of thecore is unknown.

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CLAYSTONE

Major Lithologies:This core consists of light grayishgreen to grayish green (7.5GY 6/2 to5G 4/2) CLAYSTONE, which eitheralternates with, or is mottled with, twominor lithologies: brownish gray (5Y5/1) RADIOLARIAN CLAYSTONEWITH DIATOMS, and greenish gray(5G 4/2 to 5G 5/2) CLAYSTONE WITHRADIOLARIANS AND GLAUCONITE.These minor lithotypes commonly fillsubhorizontal burrows and form thincolor bands with diffuse boundaries.Pyrite occurs as disseminatedframboids and nodules. Shellfragments are also present.

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Description

PORCELLANITE WITH ZEOLITEAND CLAY

Major Lithology:Pale green to grayish greenPORCELLANITE WITH ZEOLITEAND CLAY, with sub-mm laminae ofglauconite (darker green) and pyrite(purple ZEOLITIC CLAY). Glauconite-rich laminae appear to be hardgroundsrather than pellet lags. Rip-up clasts ofglauconite hardgrounds occur fromSection 4, 40 cm, to the base of thecore. This sediment is slightly toheavily bioturbated, with faint burrows.Some burrows are composite; theseare usually brown and richer insiliceous microfossil fragments(PORCELLANITE WITH CLAY ANDZEOLITE); Chondrites and Planolitesare also present. From Section 2, 134cm, to base, some burrows, 2 mm to 1cm wide, are filled with tabularmarcasite crystals.

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PALYGORSKITE CLAYSTONEand PALYGORSKITE CLAYSTONEWITH GLAUCONITE

Major Lithologies:Pale green (5G 7/2 to 10G 6/1)PALYGORSKITE CLAYSTONE anddusky green (5G 3/2)

GLAUCONITE are faintly bedded.Glauconite specks are sparselydisseminated in Sections 1 to 4. Pyritespecks and nodules are presentthroughout the core. PALYGORSKITECLAYSTONE WITH GLAUCONITE atSection 4, 40 to 60 cm, appears to beflow-in.

Minor Lithology:Pale green (10G 6/1) CHERTBRECCIA occurs at Section 4, 92 cmto Core Catcher, 23 cm. CHERTBRECCIA comprises clasts of white(N9) and medium dark gray (N4) tograyish olive green (5GY 3/2) CHERTand pale green (10G 6/1) claystone.The genesis of CHERT BRECCIA isunknown, but possibly due to debrisflow or due to drilling disturbance.

General Description:The age of PALYGORSKITECLAYSTONE and PALYGORSKITECLAYSTONE WITH GLAUCONITE atSection 1, 0 cm to Section 4, 92 cm isunknown.

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Description

CHERT and PORCELLANITEWITH PYRITE AND CLAY

Major Lithologies:This interval has been severelybrecciated by coring and consists offragments floating within drilling flour.Fragments recovered include darkbrown-gray, PORCELLANITE WITHPYRITE AND CLAY which exhibits thindiscontinuous laminations 1 to 3 mmthick, and CHERT. This chert variesfrom dark brown-black to clear, andincludes replacive chert and chertwhich fills fractures. These fractureshave, in turn, been fractured and arefilled by light brown Porcellanite.Fossils are very rare and includespicules and fragments of radiolariansand diatoms. Plant debris and pyriteare distributed throughout, includingwithin the black CHERT.


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5Y2/1

Description

NANNOFOSSIL FORAM CLAYWITH PYRITE, PORCELLANITE, andCHERT

Major Lithologies:Drilling breccia of opaque olive black(5Y 2/1) PORCELLANITE, andtranslucent, olive black CHERT ismixed with drilling induced mud ofNANNOFOSSIL FORAM CLAY WITHPYRITE. The CHERT contains ghostsof composite and other burrows, somewith pyritic fillings.

General Description:The age of the core is Cenomanian-Albian.

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CHERT

Major Lithology:Small fragments of black to clearCHERT were recovered for thisinterval. Evidence of multiple phases ofchert emplacement is shown in thefilling of small fractures by clear toopalescent chert. No samples weretaken for this interval, and the age isunknown.

SITE 962 HOLE B CORE 12X CORED 93.3-94.3 mbsf


CHERT AND PORCELLANITE

Major Lithology:Only a few fragments were recoveredfor this interval which contains darkgray to black CHERT which is rimmedby white PORCELLANITE. Within theCHERT, some fragments of glauconiteand recrystallized fossils are presentsuggesting a replacive origin. Nosamples were taken at this interval andthe age is not known.

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SITE 962 HOLE B CORE 13X CORED 94 .3 -100 .0 mbsf

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CHERT and DOLOMITICPORCELLANITE

Major Lithologies:Lithologies of this interval were poorlyrecovered with only a few fragments ofblack CHERT and brown (5GY 4/2)DOLOMITIC PORCELLANITE. TheDOLOMITIC PORCELLANITEcontains about 20% authigenicdolomite which is distributedthroughout the opaline matrix of thePorcellanite. Despite thetransformation of opal A to opal CT,this interval is not well lithified and itsage is unknown. One sample wastaken for paleontology.

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Description

PALYGORSKITE CLAY,

MANGANESE HARDGROUND andGLAUCONITE-PELLET RICH CLAY

Major Lithologies:Drilling breccia comprising 14 cm ofbluish, PALYGORSKITE CLAY occursover a rubble of black, MANGANESEHARDGROUND in Section 1. Section2 comprises a 3 × 4 cm IRONOXYHYDROXIDE NODULE, yellowishbrown, with a black (phosphatic?) rim.Cracks within the nodule are infilledwith the same black material. Thenodule is embedded in a drillinginduced matrix of GLAUCONITEPELLET-RICH CLAY. The age of thecore is unknown.

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SITE 962 HOLE C CORE 2R CORED 83.1 - 92.8 mbsf

GraphicLith. Structure α.

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Description

CHERT

General Description:The core consists of two pieces ofCHERT. The first piece is graded andlenticular laminated, and the laminaeare disrupted by burrows. The coarsergrains are largely replaced radiolariansand rounded quartz grains. Thesediment is fractured. The secondpiece of rock is brownish black in color.The age of the core is not known.

SITE 962 HOLE C CORE 3R CORED 92.8- 102.4 mbsf

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Major Lithology:Greenish gray (5GY 6/1) to dark gray(N3) and brownish black (5YR 2/1)CHERT, thinly banded, mottled oruniform color. Six pieces of CHERTwere recovered. Several cavities, 1-5mm in diameter, are present in twopieces of brownish CHERT.

General Description:The age of this highly fractured core islate Albian.

SITE 962 HOLE C CORE 4M

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PORCELLANITE and CHERT

Major Lithologies:The core consists of small pieces oflight greenish gray (5G 8/1) laminatedPORCELLANITE with blackish chertyveins, greenish gray (5G 6/1) slightlybedded CHERT, and brownish black(5YR 2/1) massive CHERT showingsome fractures. Pyrite fills fractures ingreenish gray chert. One smear slidewas taken from the Porcellanite andone from the greenish gray chert. Theage of this interval is not known.

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SITE 962 HOLE D CORE 1R CORED 75.1 - 84.7 mbsf

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CHERT

Major Lithology:The core consists of two pieces of darkgray (N3) translucent CHERT. Theupper one contains some greenishgray (5G 6/1) layer-like lenses ofOPAL SPICULITE WITHRADIOLARIANS. The lower pieceshows small inclusions of light gray(N8) CHERT. One smear slide wasmade from the spiculite and a sampletaken for paleontology. The age of thisinterval is not known.

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Description

Major Lithologies:The core consists of a single fragmentof olive black (5Y 2/1) laminatedPORCELLANITE interbedded with thinlayers of grayish black (N2) CHERT.The sediments show some normalfaults and syn-sedimentarydeformation.

Minor Lithology:Some parts of the laminatedPorcellanite contain PORCELLANITEWITH CALCITE, which has sparsenannofossils and foraminifers. Twosmear slides were taken from thissediment.

General Description:The age of this interval is unknown.

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SITE 962 HOLE D CORE 3R CORED 94.4-104.1 mbsf

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PORCELLANITE WITH CALCITE andCHERT

Major Lithologies:The core consists of fragments of oliveblack (5Y 2/1) faintly beddedPORCELLANITE WITH CALCITE andlaminated, olive gray (5Y 4/1) tomassive, olive black (5Y 2/1) CHERT.Laminated chert pieces contain somelaminae of dark greenish gray (5GY4/1) PORCELLANITE WITHCALCITE. Contacts are sharp.

Minor Lithology:One clast in the middle part of the coreconsists of CHERT BRECCIA WITHCALCITE. Clasts include angularfragments of dark olive black (5Y 2/1)chert with calcite dispersed in olivegray (5Y 4/1), fine-grained, calcite-cemented Porcellanite matrix. Onehorizontal, 2-cm-thick, calcite vein cutsthe upper, finer grained part of thebreccia.

General Description:The age of this interval is late Albian.

SITE 962 HOLE D CORE 4R CORED 104.1 -113.7 mbsf

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I

Ag

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Structure

Dis

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Sa

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Co

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Description

pucDT

Major Lithology:The cores consists of four pieces ofdark olive gray to olive black (5 Y 3/2to 5Y 2/1) CHERT. Faintly laminatedbands in three of the pieces containabundant planktonic foraminifers.Large pores, up to 4 mm in diameter,are lined with whitish minerals. Veinsare filled by black translucent chert.The age of the sediment is late Albian.

962D-3R CC

s—^H

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5 0 - ^

55Z6 0 —

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7 0 —

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8 5 —

IDO—

105—

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962D-4R CC

t "2 0 -

- 2 5 -

— 30—

— 35—

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SITE 962 HOLE D CORE 5R CORED 113.7- 123.4 mbsf

Met

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Sec

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Age Structure

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Sam

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Description

PORPFI I ANITF PHFRT

Major Lithology:Olive gray (5Y 4/1) to brownish black(5YR 2/1) PORCELLANITE CHERT.Concentric, light olive gray, thin bandsare visible in one of two majorPORCELLANITE CHERT clasts.Pores, 1 to 5 mm in diameter, somefilled with yellowish gray clay, arepresent in the other piece ofPORCELLANITE CHERT.

General Description:The age is unknown. The core ishighly fractured. A sample was takenfor paleontology.


Met

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Sect

ion

1

Age Structure

Dis

turb

××

Sam

ple

TMST

Col

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N7

Description

PORCELLANITE CHERT,DOLOMITIC SILTSTONE WITH CLAYαnrl P l OITC rCMCMTCn PI ΔVCVQUARTZ SANDSTONE

Major Lithologies:This core comprises grayish black(N2) PORCELLANITE CHERT,brownish gray (5YR 4/1) DOLOMITICSILTSTONE WITH CLAY and lightgray (N7) CALCITE-CEMENTEDCLAYEY QUARTZ SANDSTONE.PORCELLANITE CHERT occurs atSection 1, 0-7 cm. Laminated fine-grained CALCITE-CEMENTEDCLAYEY QUARTZ SANDSTONE ispresent at Section 1, 7-38 cm.Hummocky structure is visible inCALCITE-CEMENTED CLAYEYQUARTZ SANDSTONE. LaminatedDOLOMITIC SILTSTONE WITH CLAYoccurs in Core Catcher. Someburrows are filled with light brownishgray siltstone. Numerous fine calciteveins and normal faults are present inDOLOMITIC SILTSTONE WITHCLAY.

General Description:The age is late Albian.

962D-5R CC


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1

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Ag

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mp

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s T

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Co

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5Y2/1

late

Description

PORCELLANITE CHERT,CALCITE-CEMENTED QUARTZSANDY SILTSTONE and SILTYCLAYSTONE WITH DOLOMITE

Major Lithologies:This interval comprises the followingfragments: brownish black (5YR 2/1)PORCELLANITE CHERT which mayreflect debris collapsed from higherstratigraphic levels; medium light gray(N6) CALCITE-CEMENTED QUARTZSANDY SILTSTONE; and brownishgray (5YR 4/1) to olive black (5Y 2/1)SILTY CLAYSTONE WITHDOLOMITE. Numerous fine calciteveins and normal faults are developedin CALCITE-CEMENTED QUARTZSANDY SILTSTONE. SILTYCLAYSTONE WITH DOLOMITE andCALCITE-CEMENTED QUARTZSANDY SILTSTONE are parallellaminated.


Me

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GraphicLith.

Se

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λ,

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Structure

Dis

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Sa

mp

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Co

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Description

Λ Λ I OITC PCIillCMTCn (~\\ IΔDT7

SANDSTONE

Major Lithology:Medium gray (N5) CALCITE-CEMENTED QUARTZ SANDSTONE,massive. The core comprises drillingbreccia at 0-8 cm, and fine-grainedCALCITE-CEMENTED QUARTZSANDSTONE at 8-11 cm. Pyrite veinsoccur in CALCITE-CEMENTEDQUARTZ SANDSTONE.

General Description:The age is late Albian. The core isheavily fractured. A sample was takenfor paleontology.

962D-8R CC

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5G4/1

c v

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5Y2.5/2

CORED 152.4- 162.0 mbsf

Description

CLAYEY SANDSTONE, SILTYCLAYSTONE and CLAYSTONE WITHNANNOFOSSILS, MICRITE, ANDSPAR CEMENT

Major Lithologies:The core consists of an irregularalternation of poorly indurated, darkgreenish gray (5G 4/1) CLAYEYSANDSTONE, dark olive gray (5Y 3/2)SILTY CLAYSTONE, and structurelessor brecciated, dark olive gray (5Y2.5/1) CLAYSTONE WITHNANNOFOSSILS, MICRITE, ANDSPAR CEMENT The induratedCLAYEY SANDSTONE in Section 2,23-44 cm, has a sharp, scoured base,and displays grading above and faintlamination toward the top, which isalso sharp. This and most othersandsone beds appear to be the basesof turbidites. The upper parts of theBouma-sequences have possibly beendestroyed by drilling.

•

Very dark gray (5Y 3/1) SILTYCLAYSTONE WITH NANNOFOSSILSoccurs scattered as thin laminae inSILTY CLAYSTONE throughoutSection 1. Pieces of veined CLAYEYSANDSTONE occur in Sections 1through 4. A thin, discontinous layer ofblack BITUMINOUS CLAYSTONE isintercalated within the graded SILTYCLAYSTONE bed in Section 2, 23-44cm.



oDescription

1_

3_

Ca ×

5Y4/1

5Y3/1

CLAYSTONE WITH QUARTZ SILT,MICRITE AND NANNOFOSSILS,CLAYEY SILTSTONE WITH MICRITEAND NANNOFOSSILS and SILTYCLAYSTONE WITH ORGANICDEBRIS, MICRITE ANDNANNOFOSSIL

Major Lithologies:Sections 1 and 2 consist of dark gray(5Y 4/1) CLAYSTONE WITH QUARTZSILT, MICRITE, ANDNANNOFOSSILS and CLAYEYSILTSTONE WITH MICRITE ANDNANNOFOSSILS, respectively.Section 3 and Core Catcher comprisevery dark gray (5Y 3/1) SILTYCLAYSTONE WITH ORGANICDEBRIS, MICRITE, ANDNANNOFOSSILS, which is intenselyveined. There have been more thanone episode of veining, and the veinsare filled with calcite. Calcite is alsodisseminated as a spar cement in thelower part of the core. In addition, allthree dominant lithotypes have parallellaminations, which consist of dark grayand very dark gray laminae. They alsocontain pyrite, which is mostlydisseminated, while mud lithoclastsare present in Section 1, 140 cm.Coherent pieces of rocks are steeplydipping in Section 2, where abruptchanges in dip direction occur atIntervals 30 cm and 110 cm. There areslickensides in Section 1, andmicrofaults in Sections 1 to 3.

Minor Lithology:Dark gray laminae compriseCLAYSTONE WITH QUARTZ SILT,ORGANIC DEBRIS, NANNOFOSSILSAND MICRITE. The organic debriscontent of these laminae is up to 20%.

962D-10R 1 2 3 CC



üDescription

SS

ST

SSM

5Y3/1

5Y5/1

5Y4/1

CLAYSTONE WITH FORAMS,NANNOFOSSILS AND MICRITE,CLAYSTONE WITH NANNOFOSSILSAND MICRITE and LIMESTONE

Major Lithologies:The dominant sediment is darkbrownish gray (5Y 4/1) CLAYSTONEWITH FORAMS, NANNOFOSSILSAND MICRITE grading to slightlydarker (5Y 3/1) CLAYSTONE WITHNANNOFOSSILS AND MICRITE. Thefine-grained portions are highlydisturbed by drilling. Some coherentpieces show soft sedimentary foldsand the sediment is overall slightlytectonically sheared. Normal faults arepresent in Core Catcher. Section 1,80-130 cm and Sections 2 and 3, 0-7cm consist of light grayish (5Y 5/1)laminated LIMESTONE. Bedding isnearly vertical.

Minor Lithologies:Dark gray (5Y 4/1) laminatedSANDSTONE WITH CALCITE ANDCLAY and SILTSTONE WITH CLAY,MICRITE AND FORAMS is present inSection 3, 30-35 cm. Calcite fills veinsin Section 1,4-5 and 122-123 cm.

SITE «

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J62 HOLE

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5Y3/2ToN5


Description

CLAYEY DOLOMITE WITH QUARTZSILT AND PYRITE, MICRITELIMESTONE WITH NANNOFOSSILSAND CLAY and CLAYEY QUARTZSILTSTONE WITH MICRITE ANDNANNOFOSSILS

Major Lithologies:Highly drilling disturbed sediment, withsofter, less consolidated or cementedintervals largely churned into drillinginduced mud, and more consolidatedor cemented intervals highly fracturedto brecciated. The softer sedimentcomprises massive beds of dark olivegray (5Y 3/2) CLAYEY DOLOMITEWITH QUARTZ SILT AND PYRITE, upto 25 cm thick. The partly cementedintervals comprise alternating laminaeof dark olive gray MICRITELIMESTONE WITH NANNOFOSSILSAND CLAY and normally graded,medium gray CLAYEY QUARTZSILTSTONE WITH MICRITE ANDM Δ M Mf"^Ff^^^ 11 ^ I s miπ3θ Q ro et ih\i 'i**! M i > i u r u o o i L O . i_di I IM lct" die bUU"

mm to 8 mm thick. In Sections 4 and 5,these are steeply dipping to vertical.Section 3, 90-126 cm is characterizedby fecal pellet-rich beds. Pyrite veinsare also present in the core.

Minor Lithology:Dark olive gray laminae thicken locallyto form beds up to 5 cm thick ofMICRITE NANNOFOSSILLIMESTONE WITH CLAY.

962D-12R 1


Structure

Φ

5GY2.5/1

To2.5Y3/2

Description

NANNOFOSSIL CLAYSTONE WITHDOLOMITE AND PLANT DEBRIS,CLAYEY DOLOMITE WITHNANNOFOSSILS and DOLOMITICLIMESTONE WITH CLAY

Major Lithologies:This interval consists of dark brown(6.2Y 2.5/1), massive NANNOFOSSILCLAYSTONE WITH DOLOMITE ANDPLANT DEBRIS interbedded withmedium-gray brown (4Y 3/1) CLAYEYDOLOMITE WITH NANNOFOSSILSand a medium brown (3.8Y 3/1)DOLOMITIC LIMESTONE WITHCLAY. Pyrite and plant debris aredistributed throughout theNANNOFOSSIL CLAYSTONE WITHDOLOMITE AND PLANT DEBRIS,which is locally burrowed (e.g., Section1, 140-150 cm), and is commonlyseverely brecciated by drilling. Fineparallel laminations are present in theDOLOMITIC LIMESTONE WITHCLAY, which exhibits soft-sedimentboudinage (e.g., Section 2, 8-12 cm)and brittle fracturing. Coarse calcitefills fracture veins which, in turn, havebeen brecciated by deformation andenclosed in NANNOFOSSILCLAYSTONE WITH DOLOMITE ANDPLANT DEBRIS (Section 2, 53 and 75cm). Beds dip ranges from horizontial(Section 2, 10-22 cm) to vertical(Section 2, 38-55 cm).

962D14R NO RECOVERY

962D-13R 1

5

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20-

|85-

30-

35-

40-

;45-

50-

55-

60-

65-

70-

75-

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95-

100-

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110-

115-

|I2O-

185-

130-

135-

140-

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Me

ter

GraphicLith.

Se

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CC

Ag

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Structure

Dis

turb

Sa

mp

le

M S T

Co

lor

Description

DOLOMITIC LIMESTONE WITHCLAY and SILTY QUARTZSANDSTONE WITH CALCITECEMENT

Major Lithology:This interval is represented by isolatedfragments of brown DOLOMITICLIMESTONE WITH CLAY and gray-brown SILTY QUARTZ SANDSTONEWITH CALCITE CEMENT. The SILTYQUARTZ SANDSTONE WITHCALCITE CEMENT contains fineangular grains of metamorphic andigneous quartz and exhibits slightlamination. The age of this interval islate Albian.


Me

ter

2 _

3 _

4 _

GraphicLith.

Se

cti

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1

2

3

X

Ag

ela

te A

lbia

n

Structure

Dis

turb

Sa

mp

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S

S

S

S

M

Co

lor

N4

5YR4/1ToN7

N7

Description

SILTSTONE WITH QUARTZ SAND,CLAY AND MICRITE and SANDYSILTSTONE WITH CLAY ANDPYRITE

Major Lithologies:Light gray (N7) SILTSTONE WITHQUARTZ SAND, CLAY AND MICRITEand brownish black (5YR 2/1) SANDYSILTSTONE WITH CLAY ANDPYRITE are parallel laminated at amm-scale. Cross laminae are presentat Section 2, 40-43 cm and at CoreCatcher, 0-5 cm, and are probably dueto wave rippling. Both lithologiescontain 3%-5% nannofossils and/ormicrite.

Minor Lithology:Brownish gray (5YR 4/1) QUARTZSILTSTONE WITH DOLOMITE isstructureless and contains 20%dolomite rhombs.

962D-15R CC

5—j^H

io—j H

15—HJ

-Hi:2o—«§§

2 5 — '

30—

40—

4 5 —

50—

60—

8 5 —

70—

7 5 -

8 0 -

8 5 _

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9 5 -

100—

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110—

IIS—

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125—

130—

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140—

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962D-16R 1

I — 5 H

1— i o — H

1— i s — H

1— 20—H

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— B0—H

—

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70—H

75—H

80—H

85—•j

— 80—H

— 35—H

— 100—H

— 115—H

— 120—ijl

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— 135—J•

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I S O - •

SITE 962 HOLE

Met

er GraphicLith.

Mm

Sect

ion

CC

Age

D CORE

Structure

— •><

17R

Dis

turb

>

Sam

ple

M

Col

or


Description

MICRITIC QUARTZ SANDSTONEand MICRITIC QUARTZ SANDYSILTSTONE

Major Lithologies:This interval comprises gray MICRITICQUARTZ SANDSTONE which gradesupwards from cross-stratifiedsandstone into brown, laminatedMICRITIC QUARTZ SANDYSILTSTONE. These sediments occurin normally graded units above a sharplower contact (Section CC, 17-27 cm).Two generations of fracturing arepresent, with the first generation ofcoarse, white prismatic calcite cut by asecond generation of sediment andspar filled fractures (Core Catcher,12-17 cm).


962D-17R CC

SITE 962 HOLE D CORE 18R CORED 239.1 -248.8 mbsf


oDescription

1

XXXX

×XXXXX

XXXXXXXXX

XXX

CΦ>×XX

5Y3/2To5Y6/1

5Y6/1To

5GY6/1

CALCITE-CEMENTED CLAYSTONEWITH QUARTZ SILT AND MICRITEand CALCITE-CEMENTEDSANDSTONE WITH MICRITE

Major Lithologies:The core consists of drilling brecciawith coherent pieces of laminated olivegray (5Y 3/2) CALCITE-CEMENTEDCLAYSTONE WITH QUARTZ SILTAND MICRITE and horizontallylaminated to ripple laminated, fine-grained, light gray (5Y 6/1 to 5GY 6/1)CALCITE-CEMENTED SANDSTONEWITH MICRITE. Section 2, 130-150cm is more clayey and in Section 4,90-115 cm and Core Catcher, thesandstone shows small-scale cross-bedding and lenticular bedding seenas isolated ripples. One piece in thisinterval shows syn-sedimentarybrecciation. Calcite veins are presentin Section 1, 82-84 cm, Section 2,50-53 cm, Section 3, 85-90 and130-132 cm, and in the Core Catcher.

962D-18R 1



©

zc

5Y6/1To5Y3/2

QUARTZ SANDY LIMESTONE,LIMESTONE WITH CLAY ANDDOLOMITE, LIMESTONE andQUARTZ SILTY CLAYSTONE WITHCALCITE

Major Lithologies:Light gray (5Y 6/1 to 5GY 6/1)QUARTZ SANDY LIMESTONEalternates with dark brownish gray (5Y4/1 to 5Y 3/2) LIMESTONE WITHCLAY AND DOLOMITE. The coherentpieces show horizontal lamination andlenticular bedding. In Section 2, 15-22cm light gray (5Y 6/1) LIMESTONEshows small-scale cross-lamination.The core is slightly brecciated bydrilling and fine-grained portionsconsist of fragments of majorlithologies and loose silt and clay withcalcite, described as QUARTZ SILTYCLAYSTONE WITH CALCITEaccording to smear slide.

Minor Lithology:DOLOMITE is concentrated along faultplane in Section 1, 50 cm. Calcite fillsveins in Section 1, 18-22 and 55-62cm.

962D-19R 1

S l l h

Me

ter

1 :fc— -1

~ - H

2_-_\~ 1

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3-•f- t- H

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962 HOLE

GraphicLith.

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Se

cti

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1

2

3

4

X

Ag

ela

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lbia

n

D CORE

Structure

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20R

Dis

turb

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Sa

mp

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S

S

S

M

Co

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10YR2/2To

7.5RN5/0


Description

NANNOFOSSIL CLAYSTONE WITHQUARTZ SILT, QUARTZ SILTSTONEWITH CLAY AND OPAQUES,CLAYSTONE WITH QUARTZ SILT,NANNOFOSSILS AND OPAQUESand CALCITE-CEMENTED QUARTZSILTY SANDSTONE

Major Lithologies:This interval comprises medium todark gray-brown NANNOFOSSILCLAYSTONE WITH QUARTZ SILTinterbedded with medium grayCALCITE-CEMENTED QUARTZSILTY SANDSTONE, QUARTZSILTSTONE WITH CLAY ANDOPAQUES, and CLAYSTONE WITHQUARTZ SILT, NANNOFOSSILSAND OPAQUES. These lithologies,occurring in graded units, includestructureless to rippled coarsesandstones overlain by finelylaminated to massive siltstones andclaystones. Calcite-filled veins occurlocally in this interval. Organic debrisand pyrite, concentrated in the silt-and clay-rich lithologies, imparts adarker, brown coloration. Drilling hasseverely brecciated this interval. Aclast of chert, most likely due todownhole contamination, occurs at thetop of this core.

962D-20R 1



2 -

2

— Λ

_

-^ Δ

MT

10YR2/2To

7.5YRN5/0

NANNOFOSSIL QUARTZ SILTYCLAYSTONE and CALCITE-CEMENTED QUARTZ SILTYSANDSTONE

Major Lithologies:This interval comprises beds of grayCALCITE-CEMENTED QUARTZSILTY SANDSTONE which gradeupwards to dark brownNANNOFOSSIL QUARTZ SILTYCLAYSTONE. The CALCITE-CEMENTED QUARTZ SILTYSANDSTONE is locally rippled andcontains fine-grained angular quartz(Section 2, 22-26 cm). These gradeinto laminated NANNOFOSSILQUARTZ SILTY CLAYSTONE whichcontains abundant planktonicforaminifers. Drilling has severelydisturbed this interval with lithifiedfragments floating in a breccia ofclaystone.


Met

er GraphicLith.

i δ &—

Sec

tion

1

tr.

Ag

e

Structure

-n -

><

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Dis

turb

Sa

mp

le

D

MTT

Co

lor

10YR4/2

Description

MICRITIC SILTY QUARTZSANDSTONE and DOLOMITIC SILTYCLAYSTONE WITH MICRITE

Major Lithologies:This interval comprises normallygraded sequences of medium grayMICRITIC SILTY QUARTZSANDSTONE which fine upward intofinely laminated, brown-grayDOLOMITIC SILTY CLAYSTONEWITH MICRITE. A typical sequence ispresent in Section 1, 47-54 cm.Coarse sand beds also contain smallbrown-tan intraclasts of carbonate.Load casts are also present.


962D-21R 1



5YR4/1ToN5

S M

LIMESTONE and QUARTZ SILTYLIMESTONE

Major Lithologies:The core consists of interbeds ofmedium gray to brownish gray (N5 to5YR 4/1)) LIMESTONE and brownishgray (5YR 4/1) QUARTZ SILTYLIMESTONE. Although both lithotypesare laminated, QUARTZ SILTYLIMESTONE is slightly more massive.LIMESTONE is characterized by analternation between medium gray andbrownish gray laminae, with the latterbeing richer in quartz and organicmatter. Beds are steeply dipping atsome horizons, e.g., Section 1, 78-84and 122-129 cm, and the CoreCatcher. There is usually an upwardgradation from parallel laminated bedsto cross-laminated beds. Numerous,thin veins are filled with calcite, whileslickensides occur in Section 1, 62-65

Minor Lithology:In Section 1, 52-59 cm, limestone withundulose bedding is cut by a 5-mm-wide fracture, which is filled withMICRITIC LIMESTONE.

962D-23R 1


Met

er

2 _

3_

GraphicLith.

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1.1.

1 -1

,1.1

-1,

1.1.

1,11

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-1,

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Age

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Alb

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Structure

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5Y4/1

Description

CLAYEY LIMESTONE andCLAYSTONE WITH QUARTZ SILT

Major Lithologies:The core consists of two dominantlithologies: finer grained CLAYSTONEWITH QUARTZ SILT and coarser,often laminated CLAYEYLIMESTONE. Both are dark olive gray(5Y 4/1). The contact between the twolithologies is obscured by severedrilling disturbance.

Minor Lithologies:Pieces of medium gray (N5) cross-bedded CALCITE-CEMENTEDCLAYEY SILTSTONE are scatteredthroughout the core. Pieces of verydark olive gray to black CLAYSTONEWITH ORGANIC DEBRIS occur inSection 2, 71-73 cm and in the CoreCatcher, 7-9 cm.

962D-24R 1


Met

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1 _

GraphicLith.

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Sec

tion

1

DCA

gela

te A

lbia

n

Structure

a — F• a I < I

Dis

turb

\x xxww

Sam

ple

S S

sM

Col

or

5Y4/1To5Y6/1

Description

QUARTZ SILTY CLAYSTONE andCALCITE-CEMENTED SANDSTONEWITH CLAY AND MICRITE

Major Lithologies:The dominant lithology is dark gray(5Y 4/1) massive to laminatedQUARTZ SILTY CLAYSTONEinterbedded with laminated tolenticular-bedded medium dark gray(N4) to slightly brownish (5Y 3/2)CALCITE-CEMENTED SANDSTONEWITH CLAY AND MICRITE.

Minor Lithology:The major lithologies are interbeddedwith light gray (5Y 6/1) LIMESTONEseen as coherent pieces in Section 1,1-6 cm, 47-53 cm, 111-123 cm, andCore Catcher, 6-11 cm, 18-22 cm.Limestones show lenticular beddingand horizontal lamination. Individual,12-cm-thick, fining-upward sequenceis present in lower part of the Section 2showing a transition from lenticularand laminated limestones to finelylaminated dark gray claystones.Calcite fills veins in Section 1, 0-5 cmand Core Catcher, 18-22 cm.

962D-25R 1


Structure Description

- " " l< l

,-rA =

^n 'X1

S

s

I

S T

S

M

10YR3/2ToN5

CLAYEY SILTSTONE WITH CALCITECEMENT, CALCITE-CEMENTEDCLAYEY SILTSTONE and SILTYCLAYSTONE WITH CALCITECEMENT

Major Lithologies:The core consists of interbeds of threemajor lithologies: 1) finely laminated tomassive, dark grayish brown (10YR3/2) CLAYEY SILTSTONE WITHCALCITE CEMENT; 2) finelylaminated to rippled, dark gray tomedium gray (N4 to N5) CALCITE-CEMENTED CLAYEY SILTSTONE;and 3) massive, dark gray (5Y 4/1)SILTY CLAYSTONE WITH CALCITECEMENT. Fining-upward units occur insome horizons. Numerous, thin calcite-filled veins are present.

Minor Lithologies:The major lithologies are sometimesinterbedded with gray (N6)LIMESTONE, which is also finelylaminated. Massive, grayish brown(10YR 3/2) CLAYEY DOLOMITE ispresent at the base of Section 2.


Met

er

2_

GraphicLith.

•':'•'• \L~.i. -t

I J. .c j .

•

Sec

tion

1

2

CC

Age

late

Alb

ian

Structure

MA — a

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Dis

turb

XX

XX

XX

XX

XX

XX

XX

A

Sam

ple

s

MS

Col

or

5Y3/2

Description

SILTY SANDSTONE WITH MICRITE,CLAYSTONE WITH MICRITE ANDNANNOFOSSILS and DOLOMITICCLAYEY SILTSTONE WITH MICRITE

Major Lithologies:Olive gray (5Y 3/2) to medium gray(N5), massive to graded, rippled, andfinely laminated SILTY SANDSTONEWITH MICRITE, alternate with olivegray, laminated MICRITECLAYSTONE WITH NANNOFOSSILSand DOLOMITIC CLAYEYSILTSTONE WITH MICRITE. Drillingdisturbance is severe, with solid clastsof the first dominant lithology in adrilling induced matrix of the latter twolithologies.

962D-26R 1


Met

er

1 _

2 _

GraphicLith.

Sec

tion

1

2

^C

Age

late

Aib

ian

Structure

: 3?

r&nD

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Sam

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S

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Col

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5YR2/1

Description

MICRITIC QUARTZ SANDYSILTSTONE and QUARTZ SILTYCLAYSTONE WITH NANNOFOSSILSAND DOLOMITE

Major Lithologies:Brownish black (5YR 2/1) MICRITICQUARTZ SANDY SILTSTONE andQUARTZ SILTY CLAYSTONE WITHNANNOFOSSILS AND DOLOMITEare parallel laminated (mm scale).Cross lamination, due to wave ripple,is visible at Section 1, 90 and 140 cmand Section 2, 40, 51, and 61 cm.Small-scaled load casts are present atSection 2, 27 and 97 cm. Someburrows occur at Section 1, 87 cm andSection 2, 70 and 89 cm.

SITE

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--[-]

1 _'v

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962 HOLE

GraphicLith.

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10YR2/2To

7.5RN2.5/0


Description

LIMESTONE WITH QUARTZ SANDand QUARTZ SILTY CLAYSTONEWITH MICRITE

Major Lithologies:This interval comprises medium grayLIMESTONE WITH QUARTZ SAND tobrown gray QUARTZ SILTYoi Λ V O T Λ M C \Λ/I-TLJ IVΛIOOI-TC imi-»;/-.i-»OLAYo I UNb WI I H MIOπl I b Whichoccur in graded and laminatedsequences. The LIMESTONE WITHQUARTZ SAND contains small scaleripples which are underlain andoverlain by laminated QUARTZ SILTYCLAYSTONE WITH MICRITE. Pyrite isdisseminated throughout bothlithologies; however, it is moreabundant in the QUARTZ SILTYCLAYSTONE WITH MICRITE whichalso contains some authigenicdolomite. Planktonic foraminifers arepresent within the finer grained,QUARTZ SILTY CLAYSTONE WITHMICRITE. The upper part of the CoreCatcher is slumped.

962D-28R 1


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XX

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N5

5YR2/1

N7

Description

QUARTZ DOLOMITE SILTSTONEWITH NANNOFOSSILS and MICRITEQUARTZ SILTSTONE

Major Lithologies:Brownish black (5YR 2/1) QUARTZDOLOMITE SILTSTONE WITHNANNOFOSSILS is structureless, andmedium gray (N5) MICRITE QUARTZSILTSTONE is parallel laminated (mm-scale). Cross-lamination, probably dueto wave ripple, is visible at Section 1,12-19 cm. Small-scale load casts are

present at Section 2, 80-92 cm.Calcite veins occur at Section 2, 22-25cm. MICRITE QUARTZ SILTSTONEbecomes sandy at Section 2, 22-25cm and at Core Catcher, 0-20 cm.MICRITE QUARTZ SILTSTONE isinterbedded with QUARTZ DOLOMITESILTSTONE WITH NANNOFOSSILS.

962D-30R 1



2

©.×

I I I I I

10YR3/1To5Y6/1

QUARTZ SILTY CLAYSTONE WITHMICRITE, CLAYSTONE WITHQUARTZ SILT AND MICRITELIMESTONE and LIMESTONE WITHQUARTZ

Major Lithologies:The dominant lithology is massive tolaminated brownish gray (10YR 3/1)QUARTZ SILTY CLAYSTONE WITHMICRITE which grades intoCLAYSTONE WITH QUARTZ SILTAND MICRITE that is highly disturbedby drilling. These are interbedded withcoherent pieces of laminated tolenticular-bedded gray (5Y 6/1)LIMESTONE to LIMESTONE WITHQUARTZ. Fining-upward succession ispresent in Section 1, 35-45 cm.

Minor Lithologies:Grayish (N4) laminated CALCITE-CEMENTED SANDSTONE andCALCITE-CEMENTED SILTSTONEoccur as thin intercalations in Section1, 21-23 and 125-13 cm, and Section2, 85-90 cm. Calcite fills veins inSection 1, 5-8, 35-42, and 105-110cm.


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Sec

tion

1

Age Structure

I

Dis

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Sam

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M

Col

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5Y3/2

Description

SILTY SANDSTONE WITH MICRITEand SILTY CLAYSTONE WITHMICRITE

Major Lithologies:Alternately laminated and rippled, olivegray (5Y 3/2) to medium gray (N5)SILTY SANDSTONE WITH MICRITEto SILTY CLAYSTONE WITHMICRITE fines upward. Calcite veinsthroughout.

General Description:The age is late Albian.

962D-31R 1


Met

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1_

2_

GraphicLith.

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late

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T

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5Y4/1To10Y4/1

Description

LIMESTONE WITH QUARTZ SAND,CLAYSTONE WITH MICRITE, SILTYLIMESTONE and DOLOMITICCLAYSTONE WITH NANNOFOSSILS

Major Lithologies:This interval comprises gradedsequences of: 1) gray LIMESTONEWITH QUARTZ SAND overlain by; 2)gray to brown LIMESTONE; and then3) a dark brown, massive DOLOMITICCLAYSTONE WITH MICRITE.Sequences range in thickness from 10to 50 cm, and may not contain all ofthese lithologies. Cross-laminated,rippled beds are present only withinthe LIMESTONE WITH QUARTZSAND. Fine laminations are presentwithin the LIMESTONE, which markslight variations in the abundance ofcarbonate versus sand. Scouredbases to these sequences are presentat Section 1, 52 cm and Section 2, 15and 60 cm, but are not always visible,with transitions sometimes indicatedby thin beds of LIMESTONE WITHQUARTZ SAND. Rippled, cross-laminated coarser lithologiesoccasionally exhibit syn-sedimentaryconvolution of bedding, such as atSection 1, 40-45 cm. The calcareous,micritic component of these lithologiesincludes nannofossils andstructureless microcrystallinecarbonate. Dolomite appears to bediagenetic with silt-sized rhombsdistributed within claystones. Calcite-filled veins are locally present, Section1,15 and 130 cm. A massive tolaminated SILTY CLAYSTONEWITH NANNOFOSSILS is present atSection 1, 65-100 cm, which containsa minor amount of zeolite. Drilling hasproduced significant fracturing of thisinterval, but the sequence of lithologiesis still well represented.

962D-33R 1

SITE 962 HOLE

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5YA/0T n1 U

N5


Description

DOLOMITIC MICRITIC LIMESTONEWITH CLAY and CLAYEY MICRITICDOLOMITIC SILTSTONE WITHNANNOFOSSILS

Major Lithologies:This core comprises fining-upward

sequences composed of coarserrippled DOLMITIC MICRITICLIMESTONE WITH CLAY and finerlaminated CLAYEY MICRITICSILTSTONE WITH NANNOFOSSILS.The dolomite does not appear detrital(i.e., rounded or abraded) in smearslides, and is presumably authigenic.Brecciated zone occurs in Section 1,and is cemented by calcite. Calcite-filled veins occur throughout the core.

SITE 962 HOLE

ter

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1 _

—

2 _

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3 _

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5Y2.5/1

To10Y5/1


Description

CLAYEY LIMESTONE andCALCITE-CEMENTED CLAYSTONE

Major Lithologies:This core comprises very dark olivegray (5Y 3/1), sometimes faintlylaminated, CLAYEY LIMESTONE withsome pieces displaying a transitioninto slightly darker (5Y 2.5/1),structureless CALCITE-CEMENTEDCLAYSTONE.

Minor Lithologies:Several larger pieces of fine-grained,olive gray to gray (5Y 5/1 to N5),CLAYEY SANDSTONE WITHCALCITE CEMENT display parallel,cross, and wavy lamination throughoutthe core. The coarsest parts of thislithology are faintly graded. Calcite-filled veins are common in thesepieces. Grayish black (N2),structureless CLAYSTONE WITHCALCITE CEMENT rarely occurs, butmight constitute a significant part ofthe drilling flour.

962D-34R 1 962D-35R 1



oDescription

2

3

XXXX

©aXXX

10YR3/1To5Y5/1

10YR3/1

5Y5/1

10YR3/1

CLAYSTONE WITH QUARTZ SILTAND MICRITE and LIMESTONE WITHQUARTZ SILT

Major Lithologies:Massive to laminated dark gray (10YR3/1) CLAYSTONE WITH QUARTZSILT AND MICRITE alternates withmore coherent, thin intervals oflaminated to lenticular bedded gray(5Y 5/1) to dark gray (5Y 4/1)LIMESTONE WITH QUARTZ SILT.Massive claystones are abundantespecially in Section 2. Fining-upwardinterval is present in Section 2,110-120 cm.

Minor Lithology:Thin interbeds of laminated grayish(N4) CALCITE-CEMENTEDSANDSTONE occur in Section 1,22-24, 140-143, and 145-149 cm.Calcite fills veins in Section 1, 30-35and 103-105 and Section 2, 120-127

962D-36R 1

SITE

tëi~l

CD

-

—

2_

--

3_

--

4_

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5_

-

962 HOLE

GraphicLith.

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1

—

o

3

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4

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X

X

pie

Sam

S

S

D

S

M

o

Col

10YR3/1To

10YR4/1


Description

CLAYEY LIMESTONE WITHORGANIC DEBRIS, DOLOMITICLIMESTONE WITH QUARTZ SILTand CLAYEY DOLOMITE WITHMICRITE

Major Lithologies:This core consists chiefly of well-laminated, very dark gray (10YR 3/1)CLAYEY LIMESTONE WITHORGANIC DEBRIS, with thin interbedsof massive to faintly laminated, gray(N5) DOLOMITIC LIMESTONE WITHQUARTZ SILT. These horizons aresteeply dipping. Massive, dark gray(10YR 4/1) CLAYEY DOLOMITEWITH MICRITE occurs in Section 1,and Section 2, 80-90 cm. Calcite-filledfractures and veins are common in thecore. In Section 1, 116-130 cm andSection 3, 130-136, there is intensefracturing and slight brecciation.Undulose lamination due to soft-sedimentary deformation is presentmainly in the steeply dipping horizonsof the core.

Minor Lithology:A piece of BRECCIA is present inSection 1, 0-15 cm. It consists ofclasts of the three major lithologies in acalcite matrix. It is characterized bymany veins and fractures.

962D-37R 1

Documents

SITE 962 HOLE B CORE 1H CORED 0.0-7.5 mbsfSITE 962 HOLE B CORE 2H CORED 7.5- 17.0 mbsf Graphic Lith. Structure Description •l 4_ 5_ N2 5GY 4/1 To N2 N2 5GY 4/1 To N2 N2 5GY 2/1 N2