Ibaraki, Masako (2000): Pliocene-Pleistocene planktonic Foraminifera from the ODP Leg 170 Hole 1039B in the Middle American Trench off Costa Rica

Leg/Site/Hole:
ODP 170
ODP 170 1039
Identifier:
2000-054086
georefid
Creator:
Ibaraki, Masako
Shizuoka University, Department of Biology and Geosciences, Shizuoka, Japan
author
Identification:
Pliocene-Pleistocene planktonic Foraminifera from the ODP Leg 170 Hole 1039B in the Middle American Trench off Costa Rica
2000
Reports of Faculty of Science, Shizuoka University
Shizuoka Daigaku Rigakubu, Shizuoka, Japan
34
37-58
The drill site of Hole 1039B is located on the bottom of the Middle American Trench off Costa Rica. Biostratigraphic analyses by means of planktonic Foraminifera are made on 148 samples in total from Cores 170-1039B-1H through 18X of about 160 meters in thickness. These sediments are included in Zones N19 through N23, the Pliocene to Pleistocene in age. Occurrences of planktonic Foraminifera are rare in Zones N19 and N21, although those are common in Zones N22 and N23. A temporal decrease of warm-water dwellers is recognized at ca. 4Ma in Zone N19, suggesting an influence of the closing of the Central American Seaway.
English
Serial
Coverage:Geographic coordinates:
North:9.3823
West:-86.1200East: -86.1200
South:9.3823
Stratigraphy; biostratigraphy; Cenozoic; Central America; Costa Rica; East Pacific; Foraminifera; Invertebrata; Leg 170; microfossils; Middle America Trench; Neogene; North Pacific; Northeast Pacific; Ocean Drilling Program; ODP Site 1039; Pacific Ocean; paleo-oceanography; planktonic taxa; Pleistocene; Pliocene; Protista; Quaternary; Tertiary;
.