Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031
Deep-sea benthic foraminiferal faunas were studied from Sites 608 (depth 3534 m, 42°50'N, 23°05'W) and 610 (depth 2427 m, 53°13'N, 18°53'W). The sampling interval corresponded to 0.1 to 0.5 m.y. at Site 608 and in the sections of Site 610 from which core recovery was continuous.F...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
1987
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.706584 https://doi.pangaea.de/10.1594/PANGAEA.706584 |
id |
ftdatacite:10.1594/pangaea.706584 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.706584 2023-05-15T17:30:41+02:00 Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 Thomas, Ellen 1987 application/zip https://dx.doi.org/10.1594/pangaea.706584 https://doi.pangaea.de/10.1594/PANGAEA.706584 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2973/dsdp.proc.94.133.1987 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Composite Core Leg94 Glomar Challenger Deep Sea Drilling Project DSDP Collection article Supplementary Collection of Datasets 1987 ftdatacite https://doi.org/10.1594/pangaea.706584 https://doi.org/10.2973/dsdp.proc.94.133.1987 2021-11-05T12:55:41Z Deep-sea benthic foraminiferal faunas were studied from Sites 608 (depth 3534 m, 42°50'N, 23°05'W) and 610 (depth 2427 m, 53°13'N, 18°53'W). The sampling interval corresponded to 0.1 to 0.5 m.y. at Site 608 and in the sections of Site 610 from which core recovery was continuous.First and last appearances of benthic foraminiferal taxa are generally not coeval at the two sites, although the faunal patterns are similar and many species occur at both sites. Major periods of changes in the benthic faunas, as indicated by the numbers of first and last appearances and changes in relative abundances, occurred in the early Miocene (19.2-17 Ma), the middle Miocene (15.5-13.5 Ma), the late Miocene (7-5.5 Ma), and the Pliocene-Pleistocene (3.5-0.7 Ma). A period of minor changes in the middle to late Miocene (10-9 Ma) was recognized at Site 608 only.These periods of faunal changes can be correlated with periods of paleoceanographic changes: there was a period of sluggish circulation in the northeastern North Atlantic from 19.2 to 17 Ma, and the deep waters of the oceans probably cooled between 15.5 and 13.5 Ma, as indicated by an increase in delta18O values in benthic foraminiferal tests. The period between 10 and 9 Ma was probably characterized by relatively vigorous bottom-water circulation in the northeastern Atlantic, as indicated by the presence of a widespread reflector. The faunal change at 7 to 5.5 Ma corresponds in time with a worldwide change in delta13C values, and with the Messinian closing of the Mediterranean. The last and largest faunal changes correspond in time with the onset and intensification of Northern Hemisphere glaciation. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Kidd ENVELOPE(-65.972,-65.972,-66.448,-66.448) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Composite Core Leg94 Glomar Challenger Deep Sea Drilling Project DSDP |
spellingShingle |
Drilling/drill rig Composite Core Leg94 Glomar Challenger Deep Sea Drilling Project DSDP Thomas, Ellen Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
topic_facet |
Drilling/drill rig Composite Core Leg94 Glomar Challenger Deep Sea Drilling Project DSDP |
description |
Deep-sea benthic foraminiferal faunas were studied from Sites 608 (depth 3534 m, 42°50'N, 23°05'W) and 610 (depth 2427 m, 53°13'N, 18°53'W). The sampling interval corresponded to 0.1 to 0.5 m.y. at Site 608 and in the sections of Site 610 from which core recovery was continuous.First and last appearances of benthic foraminiferal taxa are generally not coeval at the two sites, although the faunal patterns are similar and many species occur at both sites. Major periods of changes in the benthic faunas, as indicated by the numbers of first and last appearances and changes in relative abundances, occurred in the early Miocene (19.2-17 Ma), the middle Miocene (15.5-13.5 Ma), the late Miocene (7-5.5 Ma), and the Pliocene-Pleistocene (3.5-0.7 Ma). A period of minor changes in the middle to late Miocene (10-9 Ma) was recognized at Site 608 only.These periods of faunal changes can be correlated with periods of paleoceanographic changes: there was a period of sluggish circulation in the northeastern North Atlantic from 19.2 to 17 Ma, and the deep waters of the oceans probably cooled between 15.5 and 13.5 Ma, as indicated by an increase in delta18O values in benthic foraminiferal tests. The period between 10 and 9 Ma was probably characterized by relatively vigorous bottom-water circulation in the northeastern Atlantic, as indicated by the presence of a widespread reflector. The faunal change at 7 to 5.5 Ma corresponds in time with a worldwide change in delta13C values, and with the Messinian closing of the Mediterranean. The last and largest faunal changes correspond in time with the onset and intensification of Northern Hemisphere glaciation. |
format |
Article in Journal/Newspaper |
author |
Thomas, Ellen |
author_facet |
Thomas, Ellen |
author_sort |
Thomas, Ellen |
title |
Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
title_short |
Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
title_full |
Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
title_fullStr |
Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
title_full_unstemmed |
Late Oligocene to Recent benthic foraminifers from the northeastern North Atlantic, supplement to: Thomas, Ellen (1987): Late Oligocene to Recent benthic foraminifers from Deep Sea Drilling Project sites 608 and 610, northeastern North Atlantic. 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, 997-1031 |
title_sort |
late oligocene to recent benthic foraminifers from the northeastern north atlantic, supplement to: thomas, ellen (1987): late oligocene to recent benthic foraminifers from deep sea drilling project sites 608 and 610, northeastern north atlantic. 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, 997-1031 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1987 |
url |
https://dx.doi.org/10.1594/pangaea.706584 https://doi.pangaea.de/10.1594/PANGAEA.706584 |
long_lat |
ENVELOPE(-65.972,-65.972,-66.448,-66.448) |
geographic |
Kidd |
geographic_facet |
Kidd |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.2973/dsdp.proc.94.133.1987 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.706584 https://doi.org/10.2973/dsdp.proc.94.133.1987 |
_version_ |
1766127563730583552 |