Table T5. Summary of biostratigraphic and paleoenvironmental interpretations, Site 1193.
 
Core, section,
interval (cm)		 Depth
(mbsf)		 Age
(Ma)		 Foraminiferal assemblages Comments on
constituents >63 µm		 Paleowater depth (m) Depositional
setting		 Lithologic
unit
PF
ONBF
ESBF
LBF
<30
<60
<100
>100
>200
194-













1193A-1H-CC 6.63 3.6-4.8* D R

Foraminifer-nannofossil ooze



X Hemipelagic II
1193A-2H-CC 16.02 3.6-5.6* D C

Foraminifer-nannofossil ooze, Cibicidoides



X Hemipelagic
1193A-3H-CC 26.09 4.8-5.6* D C

Foraminifer-nannofossil ooze, Cibicidoides



X Hemipelagic
1193A-4H-CC 35.42 4.8-5.6* D R
D Foraminifer-nannofossil ooze



X Hemipelagic
1193A-5H-CC 36.65 12-24 A C C C Reworked material; LBF ? X X

Platform IIIA
1193A-6X-CC 37.60 12-24 R
C A Bryozoan with LBF
? X

Platform
1193B-1R-CC 37.47 12-24 R
R A Reworked material; LBF ? X X

Platform
1193C-1R-CC 37.87 12-24


C Reworked material; LBF ? X X

Platform
1193C-2R-CC 45.62 12-24


A Abundant larger foraminifers
X X

Platform
1193C-3R-CC 51.94 12-24


A Amphistegina, Cycloclypeus
X X

Platform
1193C-4R-CC 62.77 12-24


C LBF robust to large and flat X X X

Platform
1193B-5Z-CC 64.59 12-24

R A LBF relatively flat to very flat
X X

Platform
1193B-6Z-CC 69.27 12-24


A LBF relatively flat to very flat
X X

Platform
1193B-9Z-CC 77.81 12-24

C C LBF relatively flat to very flat
X X

Platform
1193A-14X-CC 80.60 12-24

R R LBF relatively flat to very flat
X X

Platform
1193A-15X-CC 85.40 12-24


C Exposure surface to flat LBF X X X

Platform
1193B-11Z-CC 87.20 12-24


A LBF robust to large and flat X X X

Platform
1193B-12Z-CC 92.03 12-24


C LBF robust to large and flat X X X

Platform
1193A-19X-CC 109.37 12-24


A Bryozoan with large Cycloclypeus
X X

Platform
1193A-20X-CC 114.31 12-24


A Bryozoan with large Cycloclypeus
X X

Platform
1193B-17Z-CC 115.45 12-24


A Bryozoan with large Cycloclypeus
X X

Platform
1193A-21X-CC 119.20 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-22X-CC 123.98 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-23X-CC 128.72 12-24


C Dolomitized bryozoan with LBF
X X

Platform
1193A-24X-CC 133.44 12-24

R R Dolomitized bryozoan with LBF
X X

Platform
1193A-25X-CC 138.33 12-24

C C Dolomitized bryozoan with LBF
X X

Platform
1193A-27X-CC 148.27 12-24


C Dolomitized bryozoan with LBF
X X

Platform
1193A-28X-CC 152.54 12-24


C Dolomitized bryozoan with LBF
X X

Platform
1193A-29X-CC 157.80 12-24


C Dolomitized bryozoan with LBF
X X

Platform
1193A-31X-CC 169.54 12-24

C C Clay, calc silt with transported LBF ? ? ?

Platform IIIB
1193A-32X-CC 173.76 12-24

C C Clay, calc silt with transported LBF ? ? ?

Platform
1193A-33X-CC 177.06 12-24

R A Clay, calc silt with transported LBF ? ? ?

Platform
1193A-36X-CC 195.60 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-37X-CC 196.00 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-38X-CC 205.70 12-24

C C Dolomitized bryozoan with LBF
X X

Platform
1193A-39X-CC 211.29 12-24


C Bryozoan with N. howchini, others
X X

Platform
1193A-40X-CC 215.00 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-41X-CC 222.89 12-24


C Bryozoan with large Cycloclypeus
X X

Platform
1193A-43X-CC 233.76

C

Calc silt/vfs, terrigenous clays


X
Distal periplatform IV
1193A-44X-CC 239.60 16.4*
C

Calc silt/vfs, terrigenous clays


X
Distal periplatform
1193A-45X-CC 245.83

C

Calc silt/vfs, terrigenous clays


X
Distal periplatform
1193A-46X-CC 249.87

C

Calc silt/vfs, terrigenous clays


X
Distal periplatform
1193A-47X-CC 261.86 12-24
R R
Calc silt/vfs, bioclastic fragments


X
Proximal periplatform V
1193A-48X-CC 266.51 12-24
R R C Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-49X-CC 275.83 12-24
R R R Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-50X-CC 285.47 12-24
R R R Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-5X1-CC 296.51 12-24
R R R Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-52X-CC 303.43 16.8*
R R C Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-54X-CC 317.26

R

Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-55X-CC 320.82




Calc silt/vfs, nondescript


X
Proximal periplatform
1193A-56X-CC 325.65

R
R Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-57X-CC 332.71

R

Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-58X-CC 349.18

R

Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-59X-CC 358.15 12-24
R

Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-60X-CC 367.33 18.2*
R R R Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-61X-CC 377.60 12-24
R R C Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-62X-CC 385.79 12-24
R R C Calc silt/vfs, bioclastic fragments


X
Proximal periplatform
1193A-63X-CC 390.25 12-24


Dom Imbricated Lepidocyclina sands X



Platform VI
1193A-64X-CC 398.49 12-24


A Bioclastic sands; robust LBF X



Platform
1193A-65X-CC 407.72 12-24


A Bioclastic sands; robust LBF X



Platform
1193A-66X-CC 412.87 12-24


C Floatstone with bryozoans, LBF
X X

Platform
1193A-67X-CC 417.09 12-24


C Bryozoan with LBF
X X

Platform
1193A-68X-CC 422.17



R Calc silt/vfs, nondescript




Platform
1193A-69X-CC 426.75 12-24


C Carbonate/quartz sands; LBF
X


Platform
1193A-70X-CC 431.35 12-24


C Bioclastic/arkosic sands; Cycloclypeus
X X

Platform
1193A-73X-CC 445.72




Arkosic sandstone, no fossils evident




Platform
1193A-75X-CC 455.71 18.5*


C Siliciclastic sands with LBF
X X

Platform
1193A-76X-CC 460.70 12-24


C Grainstone: bryozoans, LBF
X


Platform
1193A-77X-CC 465.23 12-24

C C Grainstone: bryozoans, LBF
X


Platform
1193A-78X-CC 470.40 20.6*

C C Carbonate/quartz sands; LBF
X


Platform
1193A-79X-CC 478.04 12-24

C C Pyritized LBF and miliolids
X


Platform
1193A-80X-CC 480.32 12-24

R C Carbonate/quartz sands; LBF
X


Platform
1193A-81X-CC 487.00 12-24

R R Carbonate/quartz sands; LBF
X


Platform
1193A-82X-CC 494.75 22.5*

R R Carbonate/quartz sands; LBF
X


Platform
1193A-83X-CC 503.71 12-24

R R Carbonate/quartz sands; LBF
X


Platform
1193C-5X-CC 515.59 12-24


R Siliciclastic sands with LBF
X


Platform
1193C-6X-CC 522.00 12-24


R Siliciclastic sands with LBF
X


Platform
1193C-7X-CC 531.83 12-24


R Siliciclastic sands with rare LBF
X


Platform VII
1193C-8X-CC 544.35 12-24


R Siliciclastic sands with rare LBF
X


Platform

Notes: Based on microscopic analysis of biogenic sediment constituents, particularly benthic foraminifers, from core catcher samples and augmented by thin sections and selected core descriptions. Age: * = age from planktonic foraminifers or nannofossils (see Table T4). Foraminiferal assemblages: PF = planktonic foraminifers, ONBF = outer neritic to upper bathyal benthic foraminifers, ESBF = middle to inner neritic smaller benthic foraminifers, LBF = larger benthic foraminifers, Dom = dominant, R = rare, C = common, A = abundant. Comments: Calc silt/vfs = silt-sized and very fine sand-sized bioclastic carbonate sediments. Paleowater depth: ? = uncertain.