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Hooper, P W P; Weaver, Philip PE (1987): (Table 1) Planktonic foraminiferal communities at DSDP Holes 94-609B and 94-609. PANGAEA, https://doi.org/10.1594/PANGAEA.788916, Supplement to: Hooper, PWP; Weaver, PPE (1987): Paleoceanographic significance of late Miocene to early Pliocene planktonic foraminifers at Deep Sea Drilling Project Site 609. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 925-934, https://doi.org/10.2973/dsdp.proc.94.129.1987

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Abstract:
The planktonic foraminifers in 124 samples from Holes 609 and 609B have been analyzed quantitatively to see whether oceanographic events in the late Miocene and early Pliocene (6.5-4.0 Ma) are reflected in the distribution of individual species. Major changes in sea-surface temperature and bottom-water circulation are postulated, mainly on the basis of the coiling-direction ratios in Neogloboquadrina pachyderma (Ehrenberg) and a dissolution index. A cool interval peaking at around 6.2 Ma was followed by climatic fluctuations, possibly indicative of glacial cycles, before a general warming in the Pliocene. Intense dissolution of CaCO3 at this site on both sides of the Miocene/Pliocene boundary is inferred to have resulted from the presence of Antarctic Bottom Water, and an influx of less aggressive North Atlantic Deep Water is indicated at the actual boundary. These climatic and oceanographic changes are tentatively linked to the Messinian salinity crisis in the Mediterranean.
Project(s):
Coverage:
Latitude: 49.877800 * Longitude: -24.238200
Date/Time Start: 1983-07-22T00:00:00 * Date/Time End: 1983-07-22T00:00:00
Minimum DEPTH, sediment/rock: 269.20 m * Maximum DEPTH, sediment/rock: 397.68 m
Event(s):
94-609 * Latitude: 49.877800 * Longitude: -24.238200 * Date/Time: 1983-07-22T00:00:00 * Elevation: -3884.0 m * Penetration: 399.4 m * Recovery: 301.4 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 380.2 m cored; 19.2 m drilled; 79.3 % recovery
94-609B * Latitude: 49.877800 * Longitude: -24.238200 * Date/Time: 1983-07-22T00:00:00 * Elevation: -3883.0 m * Penetration: 354.7 m * Recovery: 308.1 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 345.1 m cored; 9.6 m drilled; 89.3 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Sample code/labelSample labelHooper, P W PODP sample designation
3Sample, optional label/labor noLab noHooper, P W P
4DEPTH, sediment/rockDepthmGeocode – mbsf
5Globigerina quinquelobaG. quinqueloba#Hooper, P W PCounting >125 µm fraction
6Globigerina eamesiG. eamesi#Hooper, P W PCounting >125 µm fraction
7Globigerina bulloidesG. bulloides#Hooper, P W PCounting >125 µm fraction
8Globigerina falconensisG. falconensis#Hooper, P W PCounting >125 µm fraction
9Globigerina woodiG. woodi#Hooper, P W PCounting >125 µm fraction
10Globigerina aperturaG. apertura#Hooper, P W PCounting >125 µm fraction
11Globigerina nepenthesG. nepenthes#Hooper, P W PCounting >125 µm fraction
12Globigerina decorapertaG. decoraperta#Hooper, P W PCounting >125 µm fraction
13Globigerinoides obliquusG. obliquus#Hooper, P W PCounting >125 µm fraction
14Globigerinoides trilobusG. trilobus#Hooper, P W PCounting >125 µm fraction
15Globigerinoides quadrilobatusG. quadrilobatus#Hooper, P W PCounting >125 µm fraction
16Globigerinoides ruberG. ruber#Hooper, P W PCounting >125 µm fraction
17Orbulina universaO. universa#Hooper, P W PCounting >125 µm fraction
18Orbulina suturalisO. suturalis#Hooper, P W PCounting >125 µm fraction
19Globorotalia conoideaG. conoidea#Hooper, P W PCounting >125 µm fraction
20Globorotalia sphericomiozeaG. sphericomiozea#Hooper, P W PCounting >125 µm fraction
21Globorotalia puncticulataG. puncticulata#Hooper, P W PCounting >125 µm fraction
22Globorotalia inflataG. inflata#Hooper, P W PCounting >125 µm fraction
23Globorotalia scitulaG. scitula#Hooper, P W PCounting >125 µm fraction
24Globorotalia cibaoensisG. cibaoensis#Hooper, P W PCounting >125 µm fraction
25Globorotalia margaritaeG. margaritae#Hooper, P W PCounting >125 µm fraction
26Globorotalia hirsutaG. hirsuta#Hooper, P W PCounting >125 µm fraction
27Globorotalia crassulaG. crassula#Hooper, P W PCounting >125 µm fraction
28Globorotalia crassaformisG. crassaformis#Hooper, P W PCounting >125 µm fraction
29Neogloboquadrina continuosaN. continuosa#Hooper, P W PCounting >125 µm fraction
30Neogloboquadrina pachyderma dextralN. pachyderma d#Hooper, P W PCounting >125 µm fraction
31Neogloboquadrina pachyderma sinistralN. pachyderma s#Hooper, P W PCounting >125 µm fraction
32Neogloboquadrina acostaensis dextralN. acostaensis d#Hooper, P W PCounting >125 µm fraction
33Neogloboquadrina acostaensis sinistralN. acostaensis s#Hooper, P W PCounting >125 µm fraction
34Neogloboquadrina humerosaN. humerosa#Hooper, P W PCounting >125 µm fraction
35Neogloboquadrina dutertreiN. dutertrei#Hooper, P W PCounting >125 µm fraction
36Neogloboquadrina atlantica dextralN. atlantica d#Hooper, P W PCounting >125 µm fraction
37Neogloboquadrina atlantica sinistralN. atlantica s#Hooper, P W PCounting >125 µm fraction
38Sphaeroidinellopsis seminulinaS. seminulina#Hooper, P W PCounting >125 µm fraction
39Sphaeroidinellopsis sp.Sphaeroidinellopsis sp.#Hooper, P W PCounting >125 µm fractionsp. A
40Sphaeroidinellopsis sp.Sphaeroidinellopsis sp.#Hooper, P W PCounting >125 µm fractionsp. B
41Globigerinita glutinataG. glutinata#Hooper, P W PCounting >125 µm fraction
42Globigerinita uvulaG. uvula#Hooper, P W PCounting >125 µm fraction
43Globigerinella aequilateralisG. aequilateralis#Hooper, P W PCounting >125 µm fraction
44Globigerinella calidaG. calida#Hooper, P W PCounting >125 µm fraction
45Foraminifera, benthicForam bent#Hooper, P W PCounting >125 µm fraction
46Siliceous microfossilsSilic foss#Hooper, P W PCounting >125 µm fractionradiolarians and diatoms
Size:
5456 data points

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