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Keller, Gerta (1978): Relative abundance of planktonic foraminifera in Pliocene and Pleistocene sediments of DSDP Hole 32-310 from Hess Rise, Central North Pacific (Table II). PANGAEA,, Supplement to: Keller, G (1978): Late Neogene biostratigraphy and paleoceanography of DSDP Site 310 Central North Pacific and correlation with the Southwest Pacific. Marine Micropaleontology, 3(2), 97-119,

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Late Neogene planktonic foraminifera have been examined at Site 310 in the Central North Pacific and their stratigraphic ranges and frequencies are presented here. Blow's (1969) zonation developed for tropical regions has been applied where applicable. Where tropical index taxa are rare or absent in this temperate region, Globorotalia crassaformis, and the evolutionary bioseries G. conoidea - G. conomiozea and G. puncticulata - G. inflata have been found useful for zonal subdivisions. A correlation between stratigraphic ranges and frequency distributions of these species at Site 310 in the Central North Pacific, and Site 284 in the Southwest Pacific indicates that these species are relatively consistent biostratigraphic markers in temperate regions of both the North and South Pacific Oceans. An informal zonation for temperate latitudes of the Southwest Pacific has been established by Kennett (1973) and a similar zonal subdivision can be made at Site 310. Paleoclimatic/paleoceanographic interpretations based on coiling ratios, percent abundance, and phenotypic variations of Neogloboquadrina pachyderma indicate four major cold events during early, middle, and late Pliocene, and early Pleistocene. Faunal correlations of these events with similar events elsewhere in the Northeast and Southwest Pacific which have been paleomagnetically dated indicate the following approximate ages for these cold events: 4.7 Ma, 3.0 Ma, 2.6-1.8 Ma, and 1.2 Ma. Faunal assemblages have been divided into three groups representing cool, intermediate, and warmer water assemblages. Cool water assemblages are dominated by ~60% N. pachyderma; intermediate temperature faunas are dominated by species of Globigerina and Globigerinita and contain between 20% and 30% N. pachyderma. Warmer water assemblages are dominated by species of Globorotalia and contain <10% N. pachyderma. Frequency oscillations within these groups, in addition to paleotemperature parameters evident in N. pachyderma, afford refined paleoclimatic/paleoceanographic interpretations.
Latitude: 36.868500 * Longitude: 176.901500
Date/Time Start: 1973-09-19T00:00:00 * Date/Time End: 1973-09-19T00:00:00
Minimum DEPTH, sediment/rock: 0.68 m * Maximum DEPTH, sediment/rock: 56.12 m
32-310 * Latitude: 36.868500 * Longitude: 176.901500 * Date/Time: 1973-09-19T00:00:00 * Elevation: -3516.0 m * Penetration: 193.5 m * Recovery: 145.2 m * Location: North Pacific/CONT RISE * Campaign: Leg32 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 193.5 m cored; 0 m drilled; 75.1 % recovery
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Sample code/labelSample labelKeller, GertaODP sample designation
3EpochEpochKeller, Gerta
4Planktonic foraminifera zonePlank foram zoneKeller, Gerta
5Foraminifera, planktic preservationForam plankt preservKeller, GertaG = good, M = moderate, P = poor
6Foraminifera, planktic indeterminataForam plankt indet%Keller, GertaCounting >63 µm fractionunknown
7Globigerina aperturaG. apertura%Keller, GertaCounting >63 µm fraction
8Globigerina bulloidesG. bulloides%Keller, GertaCounting >63 µm fraction
9Globigerina decorapertaG. decoraperta%Keller, GertaCounting >63 µm fraction
10Globigerina digitataG. digitata%Keller, GertaCounting >63 µm fraction
11Globigerina falconensisG. falconensis%Keller, GertaCounting >63 µm fraction
12Globigerina foliataG. foliata%Keller, GertaCounting >63 µm fraction
13Globigerina parabulloidesG. parabulloides%Keller, GertaCounting >63 µm fraction
14Globigerina praedigitataG. praedigitata%Keller, GertaCounting >63 µm fraction
15Globigerina quadrilateraG. quadrilatera%Keller, GertaCounting >63 µm fraction
16Globigerina quinquelobaG. quinqueloba%Keller, GertaCounting >63 µm fraction
17Globigerina umbilicataG. umbilicata%Keller, GertaCounting >63 µm fraction
18Globigerina woodiG. woodi%Keller, GertaCounting >63 µm fraction
19Globigerinella siphoniferaG. siphonifera%Keller, GertaCounting >63 µm fraction
20Globigerinita glutinataG. glutinata%Keller, GertaCounting >63 µm fraction
21Globigerinita humilisG. humilis%Keller, GertaCounting >63 µm fraction
22Globigerinita iotaG. iota%Keller, GertaCounting >63 µm fraction
23Globigerinita uvulaG. uvula%Keller, GertaCounting >63 µm fraction
24Globigerinoides bolliiG. bollii%Keller, GertaCounting >63 µm fraction
25Globigerinoides conglobatusG. conglobatus%Keller, GertaCounting >63 µm fraction
26Globigerinoides obliquusG. obliquus%Keller, GertaCounting >63 µm fraction
27Globigerinoides quadrilobatusG. quadrilobatus%Keller, GertaCounting >63 µm fraction
28Globigerinoides ruberG. ruber%Keller, GertaCounting >63 µm fraction
29Globigerinoides ruber pyramidalisG. ruber pyram%Keller, GertaCounting >63 µm fraction
30Globigerinoides trilobusG. trilobus%Keller, GertaCounting >63 µm fraction
31Globigerinoides sacculiferG. sacculifer%Keller, GertaCounting >63 µm fraction
32Globoquadrina altispiraG. altispira%Keller, GertaCounting >63 µm fraction
33Globoquadrina conglomerataG. conglomerata%Keller, GertaCounting >63 µm fraction
34Globoquadrina dehiscensG. dehiscens%Keller, GertaCounting >63 µm fraction
35Globoquadrina venezuelanaG. venezuelana%Keller, GertaCounting >63 µm fraction
36Globorotalia cibaoensisG. cibaoensis%Keller, GertaCounting >63 µm fraction
37Globorotalia conoideaG. conoidea%Keller, GertaCounting >63 µm fraction
38Globorotalia conomiozeaG. conomiozea%Keller, GertaCounting >63 µm fraction
39Globorotalia crassaformis crassaformisG. crassaf crassaf%Keller, GertaCounting >63 µm fraction
40Globorotalia crassaformisG. crassaformis%Keller, GertaCounting >63 µm fractionvar.
41Globorotalia crassaformis oceanicaG. crassaf oceanica%Keller, GertaCounting >63 µm fraction
42Globorotalia crassaformis rondaG. crassaf ronda%Keller, GertaCounting >63 µm fraction
43Globorotalia crassaformis rondaG. crassaf ronda%Keller, GertaCounting >63 µm fractionvar.
44Globorotalia crassulaG. crassula%Keller, GertaCounting >63 µm fraction
45Globorotalia hirsutaG. hirsuta%Keller, GertaCounting >63 µm fraction
46Globorotalia inflataG. inflata%Keller, GertaCounting >63 µm fractionmodern var.
47Globorotalia inflataG. inflata%Keller, GertaCounting >63 µm fractionprimitive var.
48Globorotalia inflataG. inflata%Keller, GertaCounting >63 µm fractiontransitional var.
49Globorotalia margaritaeG. margaritae%Keller, GertaCounting >63 µm fraction
50Globorotalia menardiiG. menardii%Keller, GertaCounting >63 µm fraction
51Globorotalia miozeaG. miozea%Keller, GertaCounting >63 µm fraction
52Globorotalia miocenicaG. miocenica%Keller, GertaCounting >63 µm fraction
53Globorotalia praescitula sinistralG. praescitula s%Keller, GertaCounting >63 µm fraction
54Globorotalia praehirsutaG. praehirsuta%Keller, GertaCounting >63 µm fraction
55Globorotalia puncticulataG. puncticulata%Keller, GertaCounting >63 µm fractionglobose var.
56Globorotalia puncticulataG. puncticulata%Keller, GertaCounting >63 µm fraction
57Globorotalia scitulaG. scitula%Keller, GertaCounting >63 µm fraction
58Globorotalia scitulaG. scitula%Keller, GertaCounting >63 µm fractionsmall var.
59Globorotalia sphericomiozeaG. sphericomiozea%Keller, GertaCounting >63 µm fraction
60Globorotalia tosaensisG. tosaensis%Keller, GertaCounting >63 µm fraction
61Globorotalia truncatulinoidesG. truncatulinoides%Keller, GertaCounting >63 µm fraction
62Globorotalia tumidaG. tumida%Keller, GertaCounting >63 µm fraction
63Globorotalia tumida flexuosaG. tumida flexuosa%Keller, GertaCounting >63 µm fraction
64Globorotaloides hexagonusG. hexagonus%Keller, GertaCounting >63 µm fraction
65Hastigerinella aequilateralisH. aequilateralis%Keller, GertaCounting >63 µm fraction
66Neogloboquadrina dutertreiN. dutertrei%Keller, GertaCounting >63 µm fraction
67Neogloboquadrina pachyderma dextral and dutertrei integradeP/D int%Keller, GertaCounting >63 µm fraction
68Neogloboquadrina humerosaN. humerosa%Keller, GertaCounting >63 µm fraction
69Neogloboquadrina nepenthesN. nepenthes%Keller, GertaCounting >63 µm fraction
70Neogloboquadrina pachydermaN. pachyderma%Keller, GertaCounting >63 µm fractionform 1
71Neogloboquadrina pachydermaN. pachyderma%Keller, GertaCounting >63 µm fractionform 2
72Neogloboquadrina pachydermaN. pachyderma%Keller, GertaCounting >63 µm fractionform 3
73Neogloboquadrina pachyderma sinistralN. pachyderma s%Keller, GertaCounting >63 µm fraction
74Orbulina suturalisO. suturalis%Keller, GertaCounting >63 µm fraction
75Orbulina universaO. universa%Keller, GertaCounting >63 µm fraction
76Pulleniatina obliquiloculataP. obliquiloculata%Keller, GertaCounting >63 µm fraction
77Sphaeroidinella dehiscensS. dehiscens%Keller, GertaCounting >63 µm fraction
78Sphaeroidinella seminulinaS. seminulina%Keller, GertaCounting >63 µm fraction
79Sphaeroidinella subdehiscensN. subdehiscens%Keller, GertaCounting >63 µm fraction
80Foraminifera, plankticForam plankt#Keller, GertaCounting >63 µm fraction
5530 data points

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