Ocean Drilling Program Initial Reports Volume 130...white (10YR 8/1 , 10Y 8/ 2 and 2.5Y 8/2) light gray 7/2 5 7/1 7/ 7/2 ) to light brownish gray (2.5Y 6/2 o n a 1 0 5 cm scale Below

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Major lithology: This core contains heavily bioturbated, mottled, pale brown (10YR 6/3) to light

yellowish brown (10YR 6/4) NANNOFOSSIL OOZE with FORAMINIFERS.

SMEAR SLIDE SUMMARY (%):

1, 14

D

TEXTURE:

Sand 10

Silt 80

Clay 10

COMPOSITION:

Foraminifers 14

Nannofossils 85

Radiolariaπs 1

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GRAPHIC

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LITH0L0GIC DESCRIPTION

NANNOFOSSIL OOZE with FORAMINIFERS

Major lithology: This core contains moderately to heavily bioturbated NANNOFOSSIL OOZEwith FORAMINIFERS. Section 1 through Section 6, 25 cm, have colors grading betweenwhite (10YR 8/1, 10YR 8/2 and 2.5Y 8/2) and light gray (10YR 7/2, 5Y 7/1, 5Y 7/2 and 2.5Y7/2) to light brownish gray (2.5Y 6/2) on a 10 to 50 cm scale. Below Section 6, 25 cm, the coloris bluish gray (5B 6/1) grading to light gray (5Y 7/1 and 10YR 7/1) and light greenish gray (5G5/1). Three diffuse mm size light greenish gray {5G 5/1) color bands are present in Section 7.


2, 101 6,43D D

TEXTURE:

Sand 10 10Silt 85 85Clay 5 5

COMPOSITION:

Foraminifers 10 10Nannofossils 90 90

3 5 — —

πrsj

4 5 —

5 0 —

3D

60—

6 5 —

70—•

7 5 —

βo

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100

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125—

130

135

140

145

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SITE 804 HOLE A CORE 4H CORED INTERVAL 20.2-29.7 mDSf

LITHOLOGIC DESCRIPTION

NANNOFOSSIL OOZE

Major liihology: This core contains NANNOFOSSIL OOZE. It is moderately to heavilybioturbated and mottled, with a few mm to cm size pyrite nodules. The dominant color is white(10YR 8/1), with minor intervals of light gray (5Y 7/1). Color bands are light olive gray (5Y 6/2),pale purple (5P 6/2), dusky blue (5PB 3/2), pale yellowish green (10GY 7/2) and medium lightgray (5B N6/6).


COMPOSITION:

804A-4H! 1:,

3 4

10

15—

20

25

30

35—

40

45—

50—

55"~~•

BO—

65-

75-

80-

85-

90-

95-

100-

105-

110-

115-

120-

125-

130-

135-

140-

145-

150-

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SITE 804 HOLE A CORE 5H CORED INTERVAL 29.7-39.2 mbsf 804A-5H. 1 2 3 4 5 6 7

^ la.osTπ.T.zoNE, | | J | | 1 1 | I I 1 Φ ^ ^ | *~*~? r *" Z " ""

o - ™ S " I K LmHOLOGY O 1 UTH0L0GIC DESCRIPTION " " j ' -. = j

^ ^ " Q w ^ 15—™-. :...,? """"~ ̂ BBBHr""""" ....•.,-»*-*J7"£. -– —1— — ~ P NANNOFOSSIL OOZE . .%.- I : I

™ o > " § ° -― — ^ – — t Major lithology: This core contains NANNOFOSSIL OOZE. Foraminifers locally constitute up " — - . ~ . , — j — • ^ ^

- o ^ 0 . 5 — — I — — 1 — to 10% of the sediment. The sediment is moderately to heavily bioturbated and mottled, with " — " I ..... C - •-•• : * _ ~ — —

2 TT^^^L" -― —^― ~ t isolated mm to cm size pyrite nodules. The dominant color is light gray (5Y 7/1) and mottle pg.___ . •L_ ••• _ _ •—--~•••. / . _ _

— co " ' - _ L _ _ L _ I colors range from olive (5Y 5/2) to light gray (5Y 7/1). Color bands vary in thickness from 5 mm " I j -x. >:;; -•'.

™ J ~— - X - — near the base of Section 3 to 30 cm in Sections 5. 6. and 7. and range in color from gray (2.5Y — " . ~ "'" . : " ' ...

— to T ^ ' •°1 I I J 6/1) to reddish gray (5R 6/1) to pale yellowish green (10GY 7/2). 3 Q _ _

o co _ J _ _ J _ SMEAH SLIDE SUMMARY (%): ~ ~ . ^ ^ ^ ^ _ ' _^~~~~ ' "'" !

ro ^ • „ '_ —*— -'― 3 • 7 5 » I

L_ «r ~ —•— —•— 4 y — — ., — .j , ,, , ,.,.co — _ _ i _ _ TEXTURE _ ; • ! J

á» J^_J_ _L" , Sill 60 ••• ••~— . . :, :... j j . ... •iπ __ _ J _ _ ( Clay 39 , . , " ' " . I

~ °° " _ | _ J COMPOSITION: _ . * ~ 1 L ; : " >'.* |

_ j ^ α ^ ^ - —'— — — N- C f I 71 I I " " ~ "~*

5 S ~ ~ — I — — I — ~ } Radiolarians 3 60 '"V;•-H,;, I 1 ' I [~ZO 3 ~ _ | _ ' Siliceous fragments 3 — _ I

Zi : - i - -i_ . * Zeollte 15 65— U - - – - h-L H I - -LU —•— — II

I i » i-i-̂ , - i 7°— - H π π Hi ~o_ I z ^ s :_~L_J_~U_ | ~Z 1 ] l l - ~ i l ^ T~ - • ~~

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ecu ë 7 I - —I— — I " ~""~ ~±- \ K | I• ' _i _i J IQC H I E _ 1 [̂ L - _ _oo _ — ^ ^ — i Ida— ^ B I v I I — —

D. u . . . " : " ~_ j _ _J_" — : ' .... I——^ ' |,

l< l< l 1̂ 1 [ccj j - , -1- , - | ' | 1 | 140—--- J—I — M h-uq j II !.i5o—3SB3-4w##—' «->-l_L..J _. ~ s--

SITE 8 0 4 HOLE A CORE 6H CORED INTERVAL 3 9 . 2 - 4 8 . 7 mbsf 804A-6H; 1BIOSTRAT. ZONE/


NANNOFOSSIL OOZE

Maior lithology: This core contains NANNOFOSSIL OOZE. Section 1, 0 145 cm, is flow-in.

Sections 2 and 3 are heavily bioturbated as indicated from abundant gray (2.5Y 6/7), light gi

(2.5Y 7/0) and white (2.5Y 8/0) mottling. The remainder of the core is primarily white (2.5Y 8/0)

with some cm scale color bands of gray (2.5Y 6/1), reddish gray (5R 6/1), and pale yellowish

green (10GY 7/2). These color bands are typically faint to smeared in appearance, wavy in

form, and show abundant cm scale displacements (microfaulting) in the lower half of the con


Clay

COMPOSITION:

Accessory minerals

Diatoms

Nannofossils

Siliceous fragm

Zeolite

5

I0

IS

20—

25—

30—

35—

40

45

50—

5S

60—

65—

70

75—

80—

85

90—

SS—

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10s-

110-

115-

lεo-

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SITE 8 0 4 HOLE B CORE 1 H CORED INTERVAL 0 . 0 - 4 . 7 mbsf

UTHOLOGIC DESCRIPTION


Major lithology: This core contains heavily bioturbated, mottled, pale yellow (2.5Y 7/4) to light

yellowish brown (10YR 6/4) NANNOFOSSIL OOZE with FORAMINIFERS. Color bands inSection 3 are 25 to 35 cm thick and alternate between light gray (2.5Y 8/2) and white (2.5Y

7/2).


S J , ,-i

Silt

Clay

COMPOSITION:

Accessory minerals

Diatoms

Nannofossils

Siliceous fragments

804B-1H|

I0

15

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25

30

35

:, 40—

45

50

5 5 —

60

70

7 5 —

80

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85

100

105

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115—

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130—1

135

140

145—

SITE 8 0 4 HOLE B CORE 2H CORED INTERVAL 4 . 7 - 1 4 . 2 mbsf

1_Z J.



Major lithology: This core contains white (2.5Y 8/2) to light gray (2.5Y 7/2) NANNOFOSSILOOZE with FORAMINIFERS. It is heavily bioturbated, as indicated by abundant light gray(2.5Y 7/2) monies that typically occur in zones 25 to 35 cm thick and approximately 60 to 8Ccm apart.


SiltClay

COMPOSITION:

Accessory minerals

ForaminifersNannofossils

Siliceous fragmentsSilicoflagellates

804B-2HI 1

r

SITE 804 HOLE B CORE 3H CORED INTERVAL 14.2-23.7 mbsf 804B-3H! 1 2 3 4 5 6 7

I 1 1 1 1 1 1 1 1 1 1 1 1

BIOSTRΔT. ZONE; , _ J ^ ^ ^ ^ ' | ! i:

'Z FOSSIL CHARACTER m 2 = > 2á*~

SITE 8 0 4 HOLE B CORE 4H CORED INTERVAL 2 3 . 7 - 3 3 . 2 mbsf

8T

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GRAPHIC

LI TH0L0GY

- _ L _ -L _ 1 _ -

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Major lithology: This core consists of NANNOFOSSIL OOZE with FORAMINIFERS. The

dominant color is white (5Y 8/1), with light gray (5Y 7/1), cm thick intervals 60 to 80 cm apart. In

Sections 1 and 4. sharp color contacts between gray (2.5Y 6/0) and white (5Y 8/1) are noted.

Also in Section 4, a few pale yellowish green (10GY 7/2) mm to cm thick bands are observed.

Slight bioturbation is indicated by mottles, and burrows are filled with softer or pyritized

material.


3, 75

D

TEXTURE:

Sand 10

Silt 55

Clay 35

COMPOSITION:

Accessory minerals Tr

Diatoms Tr

Foraminifers 15

Nannofossils 85

Radiolarians Tr

804B-4HI 1

SITE

1

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5H CORED INTERVAL 33.2-42.7 mbsf

GRAPHIC

LITHOLOGY

- _ L _ -L _ L _ -

_ _ ! _ . ._ 1 _ — L _

— — 1 — —

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~ 1 - , ~ 1 -

1 11

V O I D

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Major lithology: This core contains NANNOFOSSIL OOZE with FORAMINIFERS. Sections 1,

2 and 6 are mainly while (5Y 8/1), with intervals (up to 70 cm thick) of light gray (5Y 7/1).

Sections 3, 4. 5 and 7 are predominantly light gray (5Y 7/1), with intervals of white and gray up

to 50 cm thick. Seven very pale green (10GY 7/2) color bands (about 1 cm thick) are present

in Section 2. 97-117 cm. The sediment is slightly bioturbated as indicated by mottles and a

few pyritized burrow fills.


3,74

D

TEXTURE:

Sand 5

Silt 60

Clay 35

COMPOSITION.

Accessory minerals 1

Diatoms 2

Foraminifers 20

Nannofossils 75

Radiolarians 1

Spicules 1

804F=.H L__ 2

I 0 —

I S —

2 0 —

3 0 —

3 5 —

4 5 —

5 0 —

V !-

I1

• i

•

—

•

:

-

SITE 804 HOLE B CORE 6H CORED INTERVAL 42.7-52.2 mbsf .804B-6HJ 1 2 3 4 5 6 7 !

BI0STR4T. ZONE/ |HH•SC|| ff• • -' • !'-lJ .̂/"-s-SMJ |F!^^^W F ^ ^ ^ T j f ' jj ™ ' 1

t FOSSIL CHARACTER „ u S 2 K /• T If; < I II * '"H '

i s s s 5 s GRAPH,C 11 f π [ ilk Jπ Π π r r

o t " £ S S £ ITHO OGY ° a LITHOLOGIC DESCRIPTION ~ ~ ^ M B | \ ~

^ < I ? ° S oi I K ul j • Q . I ••- -. . -1 I - ' ' I I \ I I I / I /Z c c z α U _ J > - U J O » - -O2 1 . I \ » L y I I - i" O < « | J I J jjj ui α u j « V I _ _ | ~ ^ V / I P β * I I

"― —*— — j NANNOFOSSIL OOZE with RADIOLARIANS and NANNOFOSSIL OOZE ~ ]2 I - 1 — - 1 — ' „ _ j • i '•••J l • [ | _ 1 | \\ I

• -― —'― — 1 * Major litholog;. This core contains NANNOFOSSIL OOZE with RADIOLARIANS. grading to *" I. /,_. I j" ^ o " ^ , ° 5 ~ t NANNOFOSSIL OOZE below Section 1. Section 1 is light gray (2.5Y 7/1) and gray (2.5Y 6/1). — H : : /

^•^^• . - – —•— — grading to light gray (7.5YR 7/0) below 128 cm. Colors in Section 2 grade from light gray ? t - I I If" X-JLJ I : - . , (^ g - —^― —•— J (7.5YR 7/0) to white (7.5YR N8/) downsection. White (7.5YR N8/and 2.5Y 8/0) dominates J I I , . \ \

o ° Q J ~ —*— — below Section 2. Faint light greenish gray (5G 7/1 (and light gray (N7/) color banding is —I^ q • - — 1 — — I — | common to abundant in Sections 2 through 7. The entire core is slightly to moderately g n I I J. ' J I \ 1 I | _ . -' — ~•

~ - σ> - ― — I — _ b i o t u r b a t e d . I l l t \ I I " i '

LU ^ « - - 1 - , - 1 - 4 I " '2 -» o —•— — » SMEAR SLIDE SUMMARY (%): 3 g I "I V "A 1 ' r I •!" ' ' ~ "

i _fs j - i ^ i - j o•44 r9 « J L u U [L - ~°- ^ " 2 - -L- -L_ _L TEXTURE: ' ~ W i K jLJ z ^ i - i i i i= „ . „ , •*^ r•"^** ! •• i ~^ ^ L_ L_ t Sand 3 1 -„ 2 ^ - _ _ ! _ _ Silt 90 95 .

3 o ... ? : - ^ - ^ •h αay 7 4 < 5 0 ~ H •! I — i π r ^ i ~ " • :. - — • —™J g" 1 _ 1 _ _L_ | COMPOSITION: I

to X I -L_ _ L ~ , Diatoms 1 Tr -:: ^ B •J• i - _ _L _| 1 Foraminifers 1 3 . ;

~ __L_ _ ^ _ Nannofossils 87 95 60 I j J 1 j ,3 I_ | _ | Radiolarians 10 2 _ _ m g

- _ j _ _ L Spicules 1 Tr I A I !

j i>j>- > "4HT LJ Lv, : _L _L_η I 7 0 —i H r~f ' ~ ~i _ J~

- S i S _ 1 _ - ; ±- — • i 'z

SITE 804 HOLE B CORE 7H CORED INTERVAL 52.2-61.7 mbsf

J_


NANNOFOSSIL OOZE

Major lithology: This core contains slightly to heavily bioturbated, white (2.5Y 8/0) NANNO-FOSSIL OOZE. Numerous reddish gray (5R 6/1), light gray (N7/) and light greenish gray, (5G7/1) faint color bands and mottles are present throughout. Centimeter-scale microfaults arelocated in Section 1, 20-30 cm, Section 2, 40-50 cm and Section 3, 80-107 cm.


SandSillClay

COMPOSITION:

NannofossilsRadiolarians

804B-7H_

5 -

10-

15-

20-

SITE 804 HOLE B CORE 8H CORED INTERVAL 61 .7-71 .2 mbsf

*

t®


NANNOFOSSIL OOZE

Major lithology: This core contains NANNOFOSSIL OOZE. The core is white (2.5Y 8/0) andslightly to moderately bioturbated throughout, with abundant light gray (N7/ and 5Y 7/1)mottling in Sections 1-4. Sections 5 through CC have a more homogeneous appearance.Color banding is contorted in the following intervals: Section 1, 80-115 cm; Section 3, 90-115cm; Section 4, 0-20 cm; Section 5, 25-44 cm.


TEXTURE:

SandSiltClay

COMPOSITION:


3 , 4 5 6 7

L

SITE 804 HOLE B CORE 9H CORED INTERVAL 71 .2-80.7 mbsf

TTJ


NANNOFOSSIL OOZE

Major lithology: Th


SandSilt

COMPOSITION:

Radiolarians

804B-9H_ • 1

-J?5—f

lo—

is—|

... 20—|

UT

l

SITE 8 0 4 HOLE B CORE 1 OH CORED INTERVAL 8 0 . 7 - 9 0 . 2 rnbsf

cc

T


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y N8/) to light gray (N7/), slightly to moderately

bioturbated NANNOFOSSIL OOZE. Pale green (10G 6/2) and reddish gray (5R 6/1) color

bands are common in Sections 3-6. Microfaulling is evident in Section 1, 110-115 cm, and

Section 2, 50-110 cm.


COMPOSITION:

Foramini

Naππofo

Radiolari,

Spicules

5,80D

I

SITE 804 HOLE B CORE 1 1H CORED INTERVAL 90.2-99.7 mbsf

CC


NANNOFOSSIL OOZE and NANNOFOSSIL OOZE with FORAMINIFERS

Major lithology: This core contains NANNOFOSSIL OOZE, which grades into NANNOFOSSIL

OOZE with FORAMINIFERS in Section 2. The core is white (2.5Y N8/). faintly mottled and is

lore uniform and less banded than the overlying cores. Broad pate blue (5PB 7/2) color

bands are present in Sections 5-7.

Minor lithology: Section 2, 105-115 cm. contains NANNOFOSSIL FORAMINIFER OOZE. The

πterval has a sharp base and grades upward into FORAMINIFER NANNOFOSSIL OOZE.

SMEAR SLIDE SUMMARY J*

TEXTURE:

Sand

lilt

lay

IMPOSITION

Biodast

Diatoms

Feldspar

Foraminifers

Radiolari

Spicules

2. 76 2. 107 2, 115 6. 17

804B-1 1 H

5 —

I0

IS

eo—

25

30

as

8 0 -

8 5 -

90—

9 5 -

100-

105-

110-

115-

120-

125-

130-

135-

140-

145

iso ..' .

SITE 804 HOLE B CORE 1 2H CORED INTERVAL 99.7-109.2 mbsf


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y N8/), faintly mottled, andFOSSIL OOZE. Faint pale pink (5RP 8/2) and dusky blue (5BP 3/2) coleSections 1-5.


miform NANNO-r bands are prese

COMPOSITION:

Accessory miner;BioclastDiatomsFeldsparForaminifersNannofossilsRadiolariansSpicules

804B-12HJ 1

IS

20

25

30

3 5 —

40

45—j

50

SS—'

60—

65

70

75—;

80—

85—

90

H

ir

y.._

—

SITE 8 0 4 HOLE B CORE 13H CORED INTERVAL 1 0 9 . 2 - 1 1 8 . 7 mbsf 804B-13HJ 1

±

UTHOLOGIC DESCRIPTION

NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y 8/0) NANNOFOSSIL OOZE. Section 1, 0-55cm, and Section 5, 37 cm to CC are flow-in. The remainder of the core is slightly to moderatelybioturbated and contains light gray (7N/) color banding. Color bands are inclined to slightlycontorted in Sections 1 and 2.


SardSiltClay

COMPOSITION:

Accessory minerals

For,

RadiolariSpicules

lifers

SITE 8 0 4 HOLE B CORE 1 4H CORED INTERVAL 1 1 8 . 7 - 1 2 8 . 2 mbsf

~i-••

oa.


NANNOFOSSIL OOZE

Major lithology: This core contains homogeneous, structureless, and dominaπtly white (2.5Y

8/0) NANNOFOSSIL OOZE. Two light gray (2.5Y 7/0) intervals (about 10 cm thick) are

observed in Sections 2 and 3, both exhibiting sharp color contacts (except the top of Sectior

2). Also in Section 2, a few cm thick, light gray color bands are noted. The core is slightly

bioturbated as indicated by rare pyritized burrows.


TEXTURE:

Silt

Clay

COMPOSITION:

Foraminifers

Nannofossils

Quartz

Spicules

2, 100

D

60

40

2

98

Tr

5, 100

D

60

40

2

98

Tr

Tr

804B-14H/ 1

few

,„ w w *""'

I0 " " '

15—

20

25

3D—

3 5 —

40

4 5 —

-4

5 5 — |

6 0 —

8 5 —

70—>

7 5 —

8 0 —

8 S —

100—

105—

U0

> ? —•••

•- / f —

5

SITE

TIM

E-R

OC

K

UN

IT

t>

LLl

Luü

MIO

er

UP

PE

8 04 HOLEBIOSTRAT. ZONE/

FO

RA

MIN

IFE

RS

| C/P

NA

NN

OF

OS

SIL

S

σ>

z

Q.

<

RA

DIO

LA

RIA

NS

DIA

TO

MS

B

Z

2

<

PH

YS.

PR

OP

ER

TIE

SI

,Φ=

63

.‰

.6

s

O •

¥

- . o

ooo

o •

SITE

UN

I

o

AR

IAN

RA

DIO

L

C

WQ_-^

g

^

O•CQ. ' j

g-ε

<

HOLEZONE/

DIA

TO

b

«

iOlL

O

OC

QJO

Q.

r-

Q1—Z

oo

C

TIC

S

3N

ST

V

PA

LE

O

σ-

c-

>-

<

o

COα>

c=)

CD

Z

ra

ER

TH

PR

OP

IP

HYS

.

J *1""

-

•71

.0

•e>α.

!2

o n

2-

¥i.

iTR

Y

3

CORE

SE

CT

IO

1

2

3

4

CC

ME

TE

R!

0.5-I;

1 .0-

:

-

-

-

-

-

-

—

-

-

-

-

1H CORED INTERVAL 0 . 0 - 6 . 3 mbsf

GRAPHICLITHOLOGY

~ -*- , ~

_ _ L _ _

— 1 — — 1 —_ _ L _ _

- 1 - - 1 -

~ _ l _ _L_~

~_i_'A~_L_~'VOID

1 1_ _L_ _

1 11

1 i

1 _

1 i

1

1 |_ _j_ _

1 I

_ _ l _ _

1

~ L | ~*~

V O I D

~ 1 ~ 1 " 1 ~

-J-_i_-L-

_L_

ST

UR

NG

D

l|

D

RIL

L 1

ruR

E!

TR

UC

1jβ

ED

. S

X1

—

T

-t-

T̂

I

1

t

t

j

01

SA

MP

LI

*



Major lithology: This core contains NANNOFOSSIL OOZE with FORAMINIFERS. It ishomogeneous, with abundant color mottling indicative of heavy bioturbation. Alternations ofpale brown (10YR 6/3) and light gray (1OYR 7/2) colors are present throughout the core.Bioturbation is also evident from zones of disseminated pyrite.


3, 74D

TEXTURE:

Sand 3Silt 65Clay 32

COMPOSITION:

Accessory minerals 5Clay 2Foraminifers 2Nannofossils 87Siliceous fragments 3

804C-1H

30

35

40

45

SO—

S 5 —

BO—

6 5 —

7 0 —

7S

80

85

90

SS

100

105

110

115

iεo

125

130

135

140

145

ISC

SITE 804 HOLE C CORE 2H CORED INTERVAL 6.3-15.8 mDSfBIOSTRAT. ZONE/

*



Major lithology: This core contains NANNOFOSSIL OOZE with FORAMINIFERS. Itgeneous. with abundant color mottling indicative ol heavy bioturbation. The sedimdominantly white {10YR 8/2) but exhibits 10 to 20 cm thick, light gray (10YR 7/2) intare spaced 20 to 30 cm apart.


Clay

COMPOSITION:

ForaminifeNannofosE

;s homo-3nt issrvals that

804C-2H

S

I0

IS

20

SS

3D—j

35

40—

45

50

55

SO—

65—

70—i

7 5 —

80—

85

90

35—

100

105

(I0

IIS

IE0

185

ISO

135

140

145

ISC

11

r

pi

SITE 804 HOLE C CORE 3H CORED INTERVAL 1 5 . 8 - 2 5 . 3 mbSf 804C-3H 1 2 3 4 5 6 7|B,OSTRAT.ZONE, I L I I I I 1 . I I I 1 I

t : FOSSIL CHARACTER m UJ ™ » i l l

ë " 8 1 S g ,^u*r,Hnrv ° § LITHOLOGIC DESCRIPTIONtr 5 = S

SITE 804 HOLE C CORE 4H CORED INTERVAL 25.3-34.8 mbsf

cc



Maior lithology: This core contains NANNOFOSSIL OOZE with FORAMINIFERS. Sections 1through 4. 40 cm, contain flow-in. The remaining sediments alternate between white (5Y 8/1)and light gray (5Y 7/1). Color contacts are gradational and color intervals are approximately of10 to 35 cm thick and spaced about 40 cm apart. The degree of mottling and pyritized burrowinfills suggests that the sediment has been moderately to heavily bioturbated.


TEXTURE:

SiltClay

COMPOSITION:

Accessory mineralsForaminifersNannofossils

804C-4H.L

5

I0

IS

20

,' es•

30

35

40

45

SO

55

SO—

es—

70

75—

BO—

• a s -

s e -

ss

100

105

ilO

115

ISO—

125

130

135

140

145

150

4

• !

>•V

+*mà-

cc!

SITE 804 HOLE C CORE 5H CORED INTERVAL 3 4 . 8 - 4 4 . 3 mbsf 804C-5H

cc



Major lithology: This core contains flow-in. Sections 1 through 3 and 6 through 7 are highly

disturbed due to flow-in. From Section 4, 35 cm, to Section 6, 60 cm, drilling disturbance is

moderate. The lithology within this interval is light gray (5Y 7/1) and heavily bioturbatβd

NANNOFOSSIL OOZE with FORAMINIFERS.


TEXTURE:

Sand

Silt

Clay

COMPOSITION:

Accessory minerals

Diatoms

Foraminifers

Nannofossils

Radiolarians

Siliceous fragments

4 5 —

SO

55-H

60

85

7 0 —

7 5 —

80

85

90

SS

150- -~L.

SITE 804 HOLE C CORE 6H CORED INTERVAL 44.3-53.8 most

NANNOFOSSIL OOZE

Mapr lithology: This core consists of white (2.5Y 8/0) NANNOFOSSIL OOZE (Section 1, 0-50cm, is flow-in. The core catcher is also highly disturbed). Abundant, irregular and wavy, mm tocm thick color bands are noted throughout the core. Most of the bands are gray (7.5R 6/0) orgreen (10GY 7/2), but a few white (2.5Y 8/2) bands are noted. All show gradational color con-tacts. Microfaultmg was observed in Sections 3, 5, 6 and 7. Moderate bioturbation is indicatedby mottles, pyritized burrow fills and disseminated pyrite.


SandSilt

Clay

COMPOSITION:

Accessory minerals

ForaminifersRadiolariansSiliceous fragments

804C-6H! 1

SITE 8 0 4 HOLE C CORE 7H CORED INTERVAL 5 3 . 8 - 6 3 . 3 mbsf

e α i

CC

804C-7H

NANNOFOSSIL OOZE

Major lithology: This core contains homogeneous and predominantly white (2.5Y 8/0) NAN-NOFOSSIL OOZE. Subhorizontal reddish gray (5R 6/1), white (2.5Y 8/2) and pale yellowishgreen (10GY 7/2) bands are present throughout. The bands are 2 to 10 mm thick and arespaced 1 to 10 cm apart. The sediment is bioturbated and has some pyritized burrow fills.


Clay

COMPOSITION:

DiatomsForaminifersNannofossilsRadiolariansSiliceous fragments

SITE 804 HOLE C CORE 8H CORED INTERVAL 6 3 . 3 - 7 2 . 8 mDsf 804C-8H


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y 8/0) NANNOFOSSIL OOZE. Sections 1 and 2contain abundant, tilted and wavy, faint, reddish gray (5R 6/1) color bands. The bands areabout 0.5 to 1 cm thick and are separated by about 0.5 to 1 cm of white {2.5Y 8/0) ooze. Colorbanding is parallel and horizontal from Section 2, 130 cm, to Section 4, 28 cm. Onlyoccasional color banding is observed below this level in the core.

Minor lithology: A thin (3 cm thick) bed of FORAMINIFER NANNOFOSSIL OOZE is noted inSection 5, 78-81 cm. It forms a graded bed with a sharp, irregular lower contact and a distinctupper contact. This bed is very soft in comparison with the surrounding sediment.


Clay

COMPOSITION:

Acces:DiatonForamNannofossilsOpaquesRadiolariansSiliceous fragmentsSiliceous sponge spiculesSilicoflagellates

* 12

II',,

SITE 8 0 4 HOLE C CORE 9H CORED INTERVAL 7 2 . 8 - 8 2 . 3 mDsf 804C-9H 1 6 CC


NΛNNOFOSSIL OOZE

Major lithology: This core contains slightly to moderately bioturbated, white (2.5Y 8/0) NANNO-FOSSIL OOZE. Sections 1 through 4 display abundant tilted, reddish gray (5R 6/1), pale blue(5PB 7/2), pale blue green (5BG 7/2), and green (10GY 6/1) color bands. In Sections 3 and 5,color bands display mm to cm size microfaults.


TEXTURE:

Sand

Silt

Clay

Accessory miner;

Diatoms

Foraminifers

RadiolariansSilicoflagellates

Spicules

SITE 804 HOLE C CORE 10H CORED INTERVAL 82.3-91.8 mbsf 804C-10HI

oa.

-i-

LITH0L0G1C DESCRIPTION

NANNOFOSSIL OOZE

Major lithology: This core contains slightly to heavily bioturbated white (2.5Y 8/0) NANNO-FOSSIL OOZE. Faint pale blue (5PB 7/2), pale purple (5P 6/2), and white (5YR 8/1) colorbands are common throughout. Some color bands in Section 3 are heavily bioturbated.


COMPOSITION:

Accessory mineralsBioclastDiatomsForaminifers

RadiolariansSilicoflagellatesSpicules

IOS

2 3 4

r~~i ~

Ui -

L

Hi1—•' i

:i

SITE 804 HOLE C CORE 1 1 H CORED INTERVAL 91 .8-101 .3 mbsf

¥CC


NANNOFOSSIL OOZE

Mapr lithology: This core contains white (2.5Y 8/0), slightly to heavily bioturbated NANNO-FOSSIL OOZE. The core is more homogeneous and has less color banding than overlying

s. Faint pale blue (5PB 7/2) and grayish blue (5PB 5/2) color bands are present inSections 5 and 6.

Minor lithology: Section 2, 28-42 cm, contains NANNOFOSSIL FORAMINIFER OOZE. Thisval has a sharp base and grades upward into the overlying lithology.

SMEAR SLIDE SUMMARY (%)

TEXTURE:

SandSiltClay

COMPOSITION:

Accessory mineralsBioclastDiatoms

NannofossilsOpaquesRadiolariansSilicoflagellatesSpicules

2, 37 3, 70

S

10

15

SO

E5—

30—

35

40—

45—

SO

55—

BO

65

70

75

80

85—I

90-

85-

iσn~

2 3m. ~r•i

rL1Ir

j

SSpssa cc

r

—*™«•™™-~-•^

SITE 804 HOLE C CORE 1 2H CORED INTERVAL 101.3-110.8 mbsf


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y 8/0), slightly to heavily bioturbated NANNO-

FOSSIL OOZE. Faint pale blue (5PB 7/2). pale purple (5RP 7/2). and grayish blue (5PB 5/2)

color bands are present in Sections 3, 6 and 7. Microfaults are evident in Section 3. 6 and 7.


TEXTURE:

Sand

Silt

Clay

COMPOSITION:

Foraminifers

Nannofossils

Radiolarians

Volcanic ash

804C-12H

5 —

I 0 —

15—

2 0 —

Hi

~ . . ,

—

—

—

3 5 —

4 0 —

45 •~

so—

βs—

7 0 —

7 5 —

BO—

as

100

105

110

115

lεo

\ S

130

135

140

145

ISO

S I T E

UN

I-R

OC

KT

IME

-

LU

OC

EN

—

ceUJCL

CL

r>o-

8 0 4BIOSTRAT.

HOLE

ZONE/

OT

IIN

IFE

FFO

RA

M

CD

Z

o

<

01

FO

SS

IlN

AN

NO

σ>zz

ÇL

<

0)

1

RA

DIO

Io

n/

ters

s

•*-Q .CO

*5Q

CL

o

s

DIA

TOI

CO

CO

c0 )U

0 JO

εCO

o

ooc

o

σ>

oi—

z

C

tRT

IEP

RO

PI

PH

YS

.

T

66

.01

.58

T

O N

% k

T7

• 08

5 1

ST

RY

CH

EM

I

CORE

z

SE

CT

I

1

2

3

4

5

6

7

CC

ME

TE

F

0.5—

-

1 .0—:

-

:

—

-

~z-

-

-

----—-

-

-

-

\

~:

--

1 3 H CORED I N T E R V A L 1 1 0 . 8 - 1 2 0 . 3 m b s f

GRAPHICLITHOLOGY

~ _ 1 _ ~ L _ 1 _ ~1

— 1 — — 1 —

~ , - 1 - , -

I

- L _ L -L

_ J _ _ J _

~ 1 ~*~ 1 ~

_ 1 _

-J-_L_-i-

~~ | | ~

_ 11 |

1 |1

~ | | ~

— 1 — —

i i

I1 |

.

1

i _ ]

_ _ L _ _

_ - L • _ 1 _ -L • _

-J- -L

~J. ~ ^ Jl ~

βi

ST

JR

s

[ D

RIL

L

1

ruR

E:

5T

RU

CS

ED

. 1

i

IT1

_Lt{(

Xi

*

x\\w11

tl

n\y

i i

II

,.

wII

II

n«IIii

II

II

ii

II

H

z

SA

MP

L

*


NANNOFOSS1L OOZE

Major lithology: This core contains white (2.5Y 8/0), slightly to heavily bioturbated NANNO-FOSSIL OOZE. Faint reddish gray (5R 6/1), pale pink (5 RP 8/2), pale blue (5PB 7/2), palepurple (5RP 7/2), and grayish blue (5PB 5/2) color bands are present in Sections 1 through 3.


2.65D

TEXTURE:

Sand 5Silt 87Clay 8

COMPOSITION:

Diatoms 1Foraminifers 5Nannofossils 92Radiolariaπs 1Silicoflagellates 1

I S — :

i— -

J O O - — !

r

SITE 804 HOLE C CORE 14X CORED INTERVAL 120.3-129.8 mbsf

BI08TR4T. ZONE/

cc


Major lithology: This core contains white (2.5Y 8/0), slightly to heavily bioturbated NANNO-

FOSSIL OOZE with FORAMINIFERS. The core is homogeneous with fainl pale blue (5PB

7/2) color bands present in Section 2 only.


Sand

Silt

COMPOSITION:

Nannofo

Radiolari

804C-14X

5—I

I0

15-H

so

•• . , 2 5 ;

3 0 —

35

40

4 5 —

SO—

55

BO

βs

85-

so-

85-

S I T E

UN

ITIO

CC

TIM

E-

f

c -LLJ

UP

PE

R

MIO

CE

C

8 0 4 HOLE

BIOSTRAT. ZONE/

01

FOR

AM

IK

O

d/

dl

>S

SII

NAN

NO

FC

σ>

| A

/M

to

RIA

fvB

AD

IOLA

DIA

TOM

S

c

TIC

SP

ALE

OM

;

ER

TIE

S

°

j P

HYS

. F

O -" ? ^

i

CO

"δ>

o

=89

.8

C

CORE

SE

CT

IOΛ

1

2

3

4

er,

ME

TE

RS

;

0.5-

1 .0-

-

\

~:

j

_

-

1 5 X CORED I N T E R V A L 1 2 9 . 8 - 1 3 9 . 3 m b s f

LITHOLOGY

- _ 1 _ -L _ 1 _ -

~ | ~-~ | ~

- ; ~1 - | ~

-L- _ L

- _ 1 _ -L _ L _ -

-Λ~_L_~L~

ST

UR

B.

1 D

RIL

LIN

TU

RE

SR

UC

|

SE

D.

S1

11i

I

tJI

iitI4

I\\

\j(

1t

|

SA

MP

LE

*



Major lithology: This core contains white (2.5Y 8/0), slightly to heavily bioturbated NANNO-FOSSIL OOZE with FORAMINIFERS The core is relatively homogeneous with faint grayishblue (5PB 5/2) color band present only in Section 2.


2,80D

TEXTURE:

Sand 12Silt 88

COMPOSITION:

Foraminifers 10Nannofossils 88Radiolarians 1Silicoflagellates 1


TIM

E-R

OC

K

UN

ITU

PP

ER

M

IOC

EN

E?

BIOSTRAT. ZONE/

FO

RA

MIN

IFE

RS

NA

NN

OF

OS

SIL

S

σ>zz

0.

<

RA

DIO

LA

RIA

NS

A/M

D

iart

us

p

ett

ers

so

ni

DIA

TO

MS

C-

A/

M

NT

D 9

PA

LEO

MA

GN

ET

ICS

PH

YS.

PR

OP

ER

TIE

S

T

¥

CH

EM

IST

RY

r*•

o

X

•

o

•

SE

CT

ION

1

2

ME

TE

RS

0 . 5 -

1 . 0 -

-

GRAPHICLITHOLOGY

DR

ILL

ING

D

IST

UR

B.

SE

D.

ST

RU

CT

UR

ES

SA

MP

LES

*


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y 8/0), homogeneous, moderately bioturbatedNANNOFOSSIL OOZE,


1,70D

TEXTURE;

Sand 1Silt 95Clay 4

COMPOSITION:

Foraminifers 2Nannofossils 96Radiolarians 2

SITE 804 HOLE C CORE 1 7X CORED INTERVAL 148.8-158.3 mbsf

CC


NANNOFOSSIL OOZE with FORAMINIFERS and FORAMINIFER NANNOFOSSIL OOZE

Ma|or lithology: Section 1 through Section 4. 55 cm. contain moderately bioturbated NANNO-

FOSSIL OOZE with FORAMINIFERS. In Sections 1 through 3. the color of the sediment is

'hitβ (2.5Y 8/0) grading down to light gray (N7/) and light greenish gray (5G 7/1). The lower

part of the core contains FORAMINIFER NANNOFOSSIL OOZE. The color grades from light

gray (5B 7/1) to white (2.5Y N8/0). with slight to moderate mottling. A cm scale burrow fill,

with possible offset along a microfault, is seen in Section 6 between 100 and 125 cm.


TEXTURE:

Sand

Silt

COMPOSITION;

nofossils

Radiolarians

Silicoflagellates

804C-17X! 1

s

I0

is—

20

25

3D

35'—|

40

45—

SO—

55—

60

65

70—

75

80

85—

SO

35—

100

105

no

115—

120

!E5—

130—

135—

140—

145

ISO—

SITE 804 HOLE C CORE 1 8× CORED INTERVAL 158.3-168.0 mbsf

jw; F.


NANNOFOSSIL OOZE with RADIOLARIANS

Major lithology: This core contains slightly bioturbated NANNOFOSSIL OOZE with RADIO-LARIANS Section 1 is light gray (2.5Y 7/0) with a gray (2.5Y 6/0) color band at 140 cm. Theremainder of the core is white (2.5Y 8/0). The sediment appears more lithified and harder tharin the overlying cores, with relatively hard pieces within a softer matrix. Section 4, 80-95 cmappears disturbed by coring processes.


COMPOSITION:

Diatomsfers

Radiolarianε

Siliceous sponge spicules

804C-18X! / 1

S

I0

: is—|

εo—

εs—

30—

35—

40—

45*™"

so—

SS—

BO—

65*™*

70—

75—

85—

-•-.

cc

L

SITE 8 0 4 HOLE C CORE 1 9X CORED INTERVAL 1 6 8 . 0 - 1 7 7 . 7 mbsf

L1TH0L0GIC DESCRIPTION

NANNOFOSSIL OOZE with FORAMINIFERS and NANNOFOSSIL OOZE with RADIO-

LARIANS

Major lithology: This core contains NANNOFOSSIL OOZE with FORAMINIFERS, grading to

NANNOFOSSIL OOZE with RADIOLARIANS in Sections 5 through the Core Catcher. The

core is predominantly white (2.5Y 8/0). with minor gradations to light blue gray (5B 7/1) and

white (5YR 8/1). Light greenish gray (5GY 8/1). greenish gray (5GY 6/1). pale blue {5PB 7/2),

and pale red purple (5RP 6/2) color bands are rare to common throughout the core. The

entire core is moderately to heavily bioturbated

Minor lithology: Two normally-graded layers ol NANNOFOSSIL FORAMINIFER OOZE are

present in this core: the first is at Section 1, 30-80 cm, and the second is at Section 3. 10-22

cm. Both are white (2.5Y 8/0). have sharp top and bottom contacts, and are probably

turbidites.


TEXTURE:

Sand

Silt

COMPOSITION:

Foraminifers

Nannofossils

Radiolariaπs


Silicoflagellates

804C-19X

S

to—HI

IS

εo

E5

30

35—j

40

45—|

SO

55

60

6 5 — j

70—

80—

85—:

-80—|

too—

105—j

no—

IIS—I

SITE 8 0 4 HOLE C CORE 20X CORED INTERVAL 1 7 7 . 7 - 1 8 7 . 4 mbsf 804C-20>BIOSTRAT. ZONE/

w « W


NANNOFOSSIL OOZE with RADIOLARIANS grading to NANNOFOSSIL CHALK

Major lithology: This core contains bioturbated NANNOFOSSIL OOZE with RADIOLARIANSgrading to NANNOFOSSIL CHALK in Section 3, 35 cm. The color of the sediment gradesfrom white (2.5Y 8/0) to while (5Y 8/1 and 5Y 8/2). Light gray (N7/ and 5Y 7/1) and lightgreenish gray (5GY 7/1), 2 to 20 cm thick, heavily burrowed zones are present at 150 cmintervals.


COMPOSITION:


.-•: ,

SITE 804 HOLE C CORE 21X CORED INTERVAL 187.4-197.1 mbsf CC

z .~r. T


NANNOFOSSIL CHALK

Major lithology: This core contains white (10YR 8/2) NANNOFOSSIL CHALK. One to two li

gray intervals (up to 20 cm thick) are observed in each section. The core catcher is light gra

(2.5Y 7/2). The sediment is moderately to heavily bioturbated. as seen from mottles and

burrow fills. Sections 2 through 4 contain elongate (2-5 cm long) features with faint outline

that may be either burrows or ooze/chalk clasts (SEE MINOR LITHOLOGY).

Minor lithology: The light gray (2.5Y 7/2) intervals in Section 2. 80-97 cm. and Section 3.

20-37 cm. contain FORAMINIFER NANNOFOSSIL CHALK and NANNOFOSSIL CHALK w

FORAMINIFERS, respectively.


2, 89

M

TEXTURE:

Sand 20

Silt 60Clay 20

COMPOSITION:

For liπife

Nannofossils

Siliceous fragn

2, 122 3. 26 3. 78

Z J U•ß- - K {-,'1

t . o



RADIOLARIAN NANNOFOSSIL CHALK

Major lithology: This core contains RADIOLARIAN NANNOFOSSIL CHALK. The sediment

color varies between very pale brown (10YR 8/4) and white (10YR 8/2). Intense bioturbation i

indicated by abundant burrows, trace fossils, and mottling. Most of the bioturbation is highly

contorted, swirled, or fractured. Thin color banding or lamination tn Section 4, 63-72 cm,

appears to be stretched. Thin banding elsewhere exhibits micro-faulting, rotation, and

irregular contacts. Angular, very pale brown (10YR 7/3) clasts are distributed irregularly

through the core.

Minor lithology: A biscuit in Section 5, 115 cm, consists of NANNOFOSSIL RADIOLARITE.


1,92 5, 112 6, 57

M i.

TEXTURE:

Sand

Silt

Clay

COMPOSITION:

Nannofossils

Radiolariaπs


1

62

6

4

T



RADIOLARIAN NANNOFOSSIL CHALK

Major lithology: Sections 1 through 4 ol this core contain pale brown (10YR 7/4) RADIO-LARIAN NANNOFOSSIL CHALK. Moderate to heavy bioturbatioπ is evident from well-preserved trace fossils. The sediment is otherwise structureless, although drilling disturbaπis heavy. Section 4 grades from very pale brown (10YR8/3) to white (10YR8/1). This colorgradation marks a transition from radiolarian nannofossil chalk to nannoJossil ooze

Minor lithology: White (10YR 8/1), homogeneous NANNOFOSSIL OOZE is present inSections 5 and 6 of this core. It is very stiff, structureless, and heavily disturbed by drilling.


TEXTURE:

S mdSiltClay

COMPOSITION:

ForaminifersNannofossilsRadiolariansSiliceous fragmentsSiliceous sponge spicules

cc


_L


NANNOFOSSIL OOZE

Major lithology: This core contains white (2.5Y 8/2), homogeneous, bioturbated NANNO-FOSSIL OOZE. The top of Section 2 contains a few pyritized burrow fragments up to 20 mmlong. Adjacent to one pyrite fragment is a pod of white (2.5Y 8/0) NANNOFOSSIL OOZE withRADIOLARIANS.


TEXTURE:

SandSiltClay

COMPOSITION:

ForaminifersNannofossilsRadiolariansSiliceous fragme

2. 16 2,75

804C-24X


BIOSTRAT. ZONE/

cc

J_


NANNOFOSSIL CHALK

Major lithology: This core contains NANNOFOSSIL CHALK that grades to ooze in a fewπtervals. In Section 1. the chalk contains a significant percentage of RADIOLARIANS. TheDhalk is predominantly white (10YR 8/2) with intervals of light gray (10YR 7/2) that are 10 to 30cm thick. The white colored intervals are slightly bioturbated and the light gray intervals areheavily bioturbated. Color bands (mm-scale) in the gray intervals of Section 2 are contorted.


TEXTURE:

SandSilt

Clay

COMPOSITION:

Clay

Radiolarianssous fragmentssous sponge spicules

804C-25X

5 —

I 0 -

IS—

s o -

25_

3 0 -

SITE 8 0 4 HOLE C CORE 26X CORED INTERVAL 2 3 5 . 8 - 2 4 5 . 9 mbsf S04C-26Xi 1


NANNOFOSSIL CHALK with RADIOLARIANS

Major lithology: This core contains white (10YR 8/1 and 10YR 8/2) NANNOFOSSIL CHALKwith RADIOLARIANS. Heavy bioturbation is indicated by abundant trace fossils. Drillingdisturbance is severe, resulting in abundant fragmentation and brecciation of the core.


1,93 4,74

TEXTURE:

SandSiltClay

COMPOSITION:

ClayForaminifersNannofossilsRadiolariaπsSiliceous fragments

SITE 804 HOLE C CORE 27X CORED INTERVAL 245.9-255.1 mbsf 804C-27X! 1BIOSTRΛT. ZONE/



Major lilhology: This core consists of white (10YR 8/1) NANNOFOSSIL CHALK with RADIO-

LARIANS. The color grades from very pale brown (10YR 7/3) in Section 3 to a darker shade c

very pale brown (10YR 7/4) in Section 4. Sections 2. 3. 4. 6 and CC are brecciated or highly

fragmented into biscuits.


3.96

Silt

Clay

COMPOSITION:

Accessory minerals

ifers

Cls •

Radiolarians

Siliceous fragments

25'" 1

30—I

40—IAt? ,,,,,„, | |

50—I

5 5 I

—fD u II

70—I

7S—I

SITE 804 HOLE C CORE 28X CORED INTERVAL 255.1-264.7 mbsf 804C-28X! 1

oα.

ea.

CC


NANNOFOSSIL CHALK and NANNOFOSSIL CHALK with RADIOLARIANS

Major lithology: Sections 1 through 3 are very pale brown (10YR 7/4 to 10YR 8/3) NANNO-

FOSSIL CHALK with RADIOLARIANS. These sections are heavily bioturbated as evidence

from abundant trace fossils. Below Section 3, the color grades from very pale brown (10YR

8/3) to white (10YR 8/2 and 10YR 8/1). The radiolarian content is reduced in the lower part of

the core, where it becomes a NANNOFOSSIL CHALK. Bioturbation is abundant in this

interval. Drilling disturbance is moderate to SΘVΘTΘ throughout the core.


1, 75 4, 63

D D

TEXTURE:

Sand 5 5

Silt 50 55

Clay 45 40

COMPOSITION:

Clay 5

Foraminifers Tr 3

Nannofossils 85 92

Radiolariaπs 10 5


S g

J I I L


Major lithology: This core contains slightly to heavily bioturbated NANNOFOSSIL CHALK with

RADIOLARIANS. The color grades from white (2.5Y 8/0) in the upper three sections to

alternating intervals of white (2.5Y 8/0) and very pale brown (10YR 8/3) in Sections 4 through

6. Drilling disturbsncθ is modθratθ to severe throughout the core.


TEXTURE:

Silt

Clay

COMPOSITION:

Nannofossils

Radiolarians

SITE

§

804 HOLE C CORE 30X CORED INTERVAL 274.4-284.0 mbsf

CC"


NANNOFOSSIL CHALK

Major lithology: This core contains NANNOFOSSIL CHALK. The color varies between shade;of white (10YR 8/2,10YR 8/1) in Section 1 and 2, and is more uniformly white (10YR 8/1) inthe remainder of the core. Hard intervals are intermixed with softer ones in Section 1. InSection 1, 100 cm, there is a 5 cm thick section that exhibts discontinuous parallel lamination.The entire core is slightly to heavily bioturbated and is moderately fractured by drilling.


TEXTURE:

SandSilt

COMPOSITION:

ForaminifersNannofossilsRadiolariansSilicoflagellates

804C-30X! 1

SITE 804 HOLE C CORE 31X CORED INTERVAL 284.0-293.7 mbsf 804C-31X! 1


NANNOFOSSIL CHALK

Major lithology: This core contains NANNOFOSSIL CHALK. The

grading to white (10YR 8/2) at the base of Section 3. Bioturbation

throughout the core.


TEXTURE:

Sand

Silt

COMPOSITION:

Foraminifers

Radiolarians

ore is whitt

/aries from

(10YR8/1),

no—I

IIS—I

iεo—i

SITE 8 0 4 HOLE C CORE 32X CORED INTERVAL 2 9 3 . 7 - 3 0 3 . 3 mbsf

J _

804C-32XI 1


NANNOFOSSIL CHALK to NANNOFOSSIL CHALK with RADIOLARIANS

Major lithology: This core contains NANNOFOSSIL CHALK, grading to NANNOFOSSIL

CHALK with RADIOLARIANS. The core is white (10YR 8/1 to 10YR8/2) in both sedimeπ

types. Bioturbation is slight to heavy throughout the core, including well-developed

Zoophycos trace fossils in Section 1.


TEXTURE:

Sand

Silt

Clay

COMPOSITION.

Diatoms

Foraminifers

Quartz

Radiolariaπs


1.70 2,49

SITE 8C4 HOLE C CORE 33X CORED INTERVAL 3 0 3 . 3 - 3 1 2 . 5 mbsf 804C-33X__j1

I Uffi.


NANNOFOSSIL CHALK to NANNOFOSSIL CHALK with RADIOLARIANS

Major lithology: This core contains NANNOFOSSIL CHALK, grading to NANNOFOSSIL

CHALK with RADIOLARIANS. The core is white (10YR 8/1 to 10YR 8/2) in both sediment

types. Bioturbation is slight to heavy throughout the core, including well-developed

Zoophycos trace fossils in Section 1.


TEXTURE:

Sand

Silt

Clay

COMPOSITION:

Diatoms

Foraminifers

Nannofossils

Quartz

Radiolahaπs


Documents

Ocean Drilling Program Initial Reports Volume 130...white (10YR 8/1 , 10Y 8/ 2 and 2.5Y 8/2) light gray 7/2 5 7/1 7/ 7/2 ) to light brownish gray (2.5Y 6/2 o n a 1 0 5 cm scale Below