Table T5. Summary of biostratigraphic and paleoenvironmental interpretations, Site 1197.

Core, section,
interval (cm) 		Depth
(mbsf) 		Foraminiferal assemblages Comments on core catcher samples,
>63-µm fraction 		Paleowater
depth
(m) 		Depositional
setting 		Lithologic
unit
PF
ONBF
SBF
LBF
Pres
194-









1197A-1H-CC, 18-20 6.13 Dom Div, C

G PF, pteropods; common bryozoan colonies/debris >200 Hemipelagic I
1197A-2H-CC, 11-13 15.61 Dom Div, C

G PF, pteropods; common bryozoan colonies/debris, solitary corals >200 Hemipelagic
1197A-3H-CC, 18-20 25.22 Dom Div, C

G PF, pteropods; common bryozoan colonies/debris, solitary corals >200 Hemipelagic
1197A-4H-CC, 13-15 34.87 Dom C

G PF, pteropods; common bryozoan colonies/debris, solitary corals >200 Hemipelagic
1197A-5H-CC, 16-18 44.20 Dom C

G PF; common bryozoan colonies/debris, alcyonarian spicules >200 Hemipelagic
1197A-6H-CC, 18-20 53.79 Dom Div, C

G PF; common bryozoan colonies/debris, alcyonarian spicules >200 Hemipelagic
1197A-7H-CC, 15-17 54.59 Dom A

G Sorted bioclastic sands, PF dominate, common bryozoans, etc. >200 Hemipelagic
1197A-9X-1, 31-34 59.91 A ?

VP Recrystallized, sorted medium sand-sized neritic debris, PF hard to identify >150 Proximal periplatform II
1197B-2R-1, 84-86 60.44 R ? C A P Neritic debris dominates, common LBF, especially Amphistegina, SBF ? Proximal periplatform
1197B-3R-1, 0-3 69.20 C C C VA P Abundant LBF, worn A. radiata dominant, finer neritic and nondescript debris >150 Proximal periplatform
1197A-10X-CC, 23-25 69.43 R C A A VP-M Assorted neritic fragments including LBF in a very fine chalky neritic debris >150 Proximal periplatform
1197A-11X-CC, 0-5 78.80 R C A A P Assorted neritic fragments including LBF in a very fine chalky neritic debris >150 Proximal periplatform
1197B-5R-1, 0-1 88.50 C C? A? A VP Abundant LBF, worn A. radiata dominant, finer neritic and nondescript debris ? Proximal periplatform
1197B-6R-1, 6-8 98.26 C C? C A VP Neritic debris, common LBF, especially Amphistegina, SBF ? Proximal periplatform
1197B-8R-1, 0-2 117.40 C R? C A VP Neritic debris, common LBF, especially A. papillosa-type, SBF >150 Proximal periplatform
1197B-9R-1, 8-10 127.08 C C A A VP-M Neritic debris, common LBF, especially Amphistegina, SBF >150 Proximal periplatform
1197A-17X-1, 10-12 136.60
R A A P-M Assorted neritic fragments including LBF in a very fine chalky neritic debris >150 Proximal periplatform
1197B-11R-1, 0-5 146.20 A C? A A VP-M Highly recrystallized; Amphistegina and Lepidocyclina recognizable; PF ? Proximal periplatform
1197B-12R-1, 0-5 155.80 A C? C C VP-M Highly recrystallized; Amphistegina and Lepidocyclina recognizable; PF ? Proximal periplatform
1197A-20X-CC, 0-5 165.40 Dom C
A P-G Assorted neritic fragments in a very fine chalky dolomitic debris >150 Proximal periplatform
1197B-13R-1, 0-5 165.40 A R C C VP-M PF abundant, neritic material highly recrystallized >150 Proximal periplatform
1197B-14R-1, 40-42 175.40 R R C C VP-M Highly recrystallized; Amphistegina and Lepidocyclina recognizable; PF >150 Proximal periplatform
1197B-15R-1, 43-45 185.03 C C C A M Neritic debris with 3 morphotypes of Lepidocyclina >150 Proximal periplatform III
1197B-16R-1, 56-58 194.76 R C? C? A VP Neritic debris, abundant MBF, especially Lepidocyclina ? Proximal periplatform
1197B-17R-1, 64-66 204.44 A C? A A VP Neritic debris, abundant Lepidocyclina, fines are crystals, PF, SBF, debris ? Proximal periplatform
1197B-18R-1, 28-30 213.68 A C? A A VP Neritic debris, abundant Lepidocyclina, bryozoans, fines are crystals, PF, SBF, debris ? Proximal periplatform
1197B-19R-1, 36-38 223.36 A C A A P Neritic debris, abundant Lepidocyclina, bryozoans, fines are crystals, PF, MBF, debris >150 Proximal periplatform
1197B-20R-1, 32-34 233.02

? A P Lithified neritic debris, abundant Lepidocyclina, bryozoans ? Proximal periplatform
1197B-21R-1, 47-49 242.77 A A A A P Neritic debris, abundant Lepidocyclina, bryozoans, fines are crystals, PF, SBF, debris >150 Proximal periplatform
1197B-22R-1, 22-24 252.12

? A P Lithified neritic debris including Lepidocyclina filled with glauconite ? Proximal periplatform











1197B-23R-1, 44-46 261.94 A A C C VP-M PF/ONBF abundant in fines, not recrystallized; coarse is mostly brown dolomite >200 Distal periplatform IVA
1197B-24R-1, 34-36 271.54 A C
R P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile Lepidocyclina >200 Distal periplatform
1197B-25R-1, 120-122 282.00 A C
R P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile Lepidocyclina >200 Distal periplatform
1197B-27R-1, 35-37 300.35 A C R R P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile Lepidocyclina >200 Distal periplatform
1197B-28R-2, 50-53 311.70 A C

P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile Lepidocyclina >200 Distal periplatform
1197B-29R-2, 35-38 321.15




Lithified fine neritic debris
Distal periplatform
1197B-30R-1, 31-33 329.21 A C

P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoids, bivalves >200 Distal periplatform
1197B-31R-2, 55-57 340.61 A ?

VP Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoids, bivalves
Distal periplatform
1197B-32R-1, 129-131 349.49 A C? C A VP Lithified LBF, bryozoans, bivalves, glauconite or pyrite infilled; fines are neritic debris and PF >200 Distal periplatform
1197B-33R-1, 52-55 358.32 A C?
C VP Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile Lepidocyclina >200 Distal periplatform
1197B-34R-1, 96-98 368.36




Fine neritic and PF debris, nothing definitively recognizable
Distal periplatform IVB
1197B-35R-CC, 10-12 381.67 A A
R P Fine neritic debris, PF, ONBF; neritics, including bryozoans, echnoid, juvenile LBF >200 Distal periplatform
1197B-36R-CC, 12-14 391.42




Lithified medium/fine neritic and PF debris, nothing definitively recognizable
Distal periplatform
1197B-37R-2, 51-53 398.28 A A

P Fine neritic debris, PF, ONBF, particularly Cibicidoides, minor coarse neritics >200 Distal periplatform
1197B-38R-5, 130-132 412.67




Lithified fine neritic and PF debris, nothing definitively recognizable
Distal periplatform
1197B-39R-CC, 23-25 424.51 A A
A P Fine neritic and planktonic debris, some partly lithified, ONBF >200 Distal periplatform
1197B-40R-CC, 35-37 431.70




Fine neritic and planktonic debris, some partly lithified
Distal periplatform
1197B-41R-CC, 15-17 438.98 A A
A P Fine neritic and planktonic debris, some partly lithified, ONBF >200 Distal periplatform
1197B-42R-CC, 26-28 448.52




Partly lithified fine mudstone
Distal periplatform
1197B-43R-CC, 14-16 456.18




Partly lithified fine mudstone
Distal periplatform
1197B-44R-CC, 38-40 472.93



VP Lithified medium/fine neritic and PF debris
Distal periplatform
1197B-45R-7, 117-119 482.61




Partly lithified fine mudstone
Distal periplatform
1197B-46R-CC, 22-24 492.51 A C ? Juv? P Neritic debris, tiny foraminifers—PF, MBF, crystals are major components, ostracods >200 Distal periplatform
1197B-47R-6, 11-116 500.55




Lithified medium/fine neritic and PF debris
Distal periplatform
1197B-48R-6, 136-138 510.64




Lithified medium/fine neritic and PF debris
Distal periplatform
1197B-49R-3, 95-97 515.29




Lithified medium/fine neritic and PF debris
Distal periplatform
1197B-50R-CC, 16-18 531.06 A C ? Juv? P Tiny foraminifers—PF, MBF; neritic debris, crystals are major components, ostracods >200 Distal periplatform
1197B-52R-CC, 23-25 550.40




Lithified medium/fine neritic and PF debris
Distal periplatform
1197B-53R-CC, 11-13 557.25 A C ? Juv?
Tiny forams—PF, MBF; neritic debris, crystals are major components >200 Distal periplatform
1197B-54R-8, 71-73 569.37 A C ? Juv?
Tiny foraminifers—PF, MBF; neritic debris, crystals are major components, ostracods >200 Distal periplatform
1197B-55R-CC, 13-15 579.33




Partly lithified fine mudstone
Distal periplatform
1197B-56R-5, 130-132 586.30




Partly lithified fine mudstone
Distal periplatform
1197B-57R-CC, 14-16 598.41




Partly lithified fine mudstone
Distal periplatform
1197B-58R-7, 66-67 607.36


A M Lithified coarse grainstone with glauconite-filled, rounded Lepidocyclina and other LBF <100? Open shelf or proximal periplatform V
1197B-59R-CC, 14-16 612.48


A M Lithified coarse grainstone with glauconite-filled, rounded Lepidocyclina and other LBF <100? Open shelf or proximal periplatform
1197B-60R-CC, 13-15 621.33 R
C A M Lithified coarse grainstone with glauconite-filled, rounded Lepidocyclina and other LBF <100? Open shelf or proximal periplatform
1197B-61R-CC, 12-14 631.14 R
C A M Similar to Cores 58 and 59 but finer grained, beautifully preserved Amphistegina <100? Open shelf or proximal periplatform
1197B-62R-CC, 17-19 641.46


A M Two lithologies, one similar to Core 61, also coarse gold grainstone with Heterostegina <100? Open shelf or proximal periplatform
1197B-63R-4, 89-91 651.04


C ? Bottom of core is dark, volcanic sandstone with bryozoans, bivalves and Operculina <30 Inner neritic
1197B-64R-2, 125-127 658.32


?
Black volcanic-rock conglomerate; may have some Operculina and oysters <30 Inner neritic VI

Notes: Based on microscopic analysis of biogenic sediment constituents >63 µm, particularly benthic foraminifers, from core catcher samples. Foraminiferal assemblages: PF = planktonic foraminifers, ONBF = outer neritic/upper bathyal benthic foraminifers, SBF = smaller benthic foraminifers from inner to middle neritic depths, LBF = larger benthic foraminifers, Pres = preservation; Dom = dominant, Div = diverse, A = abundant, C = common, G = good, M = moderate, R = rare, P = poor, VP = very poor, Juv = juvenile, ? = uncertain.