Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I)
The oxygen isotope record of the planktonic foraminifera Globigerina bulloides and Neogloboquadrina pachyderma from Pliocene and early Pleistocene sediments at both DSDP site 173 and the Centerville Beach section in California suggests a large influx of isotopically light water in this area during l...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.691315 2023-05-15T17:14:59+02:00 Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) Kammer, Thomas W LATITUDE: 39.961800 * LONGITUDE: -125.452000 * DATE/TIME START: 1971-06-09T00:00:00 * DATE/TIME END: 1971-06-09T00:00:00 * MINIMUM ELEVATION: -2927.0 m * MAXIMUM ELEVATION: -2927.0 m 1979-04-22 text/tab-separated-values, 12 data points https://doi.pangaea.de/10.1594/PANGAEA.691315 https://doi.org/10.1594/PANGAEA.691315 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.691315 https://doi.org/10.1594/PANGAEA.691315 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kammer, Thomas W (1979): Paleosalinity, paleotemperature, and isotopic fractionation records of Neogene foraminifera from DSDP site 173 and the Centerville Beach Section, California. Marine Micropaleontology, 4, 45-60, https://doi.org/10.1016/0377-8398(79)90005-7 18-173 Calculated from stable oxygen isotopes Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg18 North Pacific/SLOPE Sample code/label Sea surface temperature annual mean Dataset 1979 ftpangaea https://doi.org/10.1594/PANGAEA.691315 https://doi.org/10.1016/0377-8398(79)90005-7 2023-01-20T08:45:47Z The oxygen isotope record of the planktonic foraminifera Globigerina bulloides and Neogloboquadrina pachyderma from Pliocene and early Pleistocene sediments at both DSDP site 173 and the Centerville Beach section in California suggests a large influx of isotopically light water in this area during late Pliocene and early Pleistocene time. Salinity may have been reduced by as much as 2 to 4 ‰. Surface sea water paleotemperatures for the lower Pliocene range from 9.5°C to 15.5°C. The oxygen isotope record of the benthonic genus Uvigerina shows little variation indicating environmental stability at depth. At DSDP site 173 the small variation in Uvigerina is due to variation in the oxygen isotopic composition of the oceans as glaciers waxed and waned. At the Centerville Beach section the oxygen isotopic composition of Uvigerina reflects the gradual shoaling of the Humboldt Basin. Carbon and oxygen isotope ratios in G. bulloides and N. pachyderma are inversely correlated at the 95% confidence level. This may indicate that the oxygen and carbon isotopic composition of foraminifera are influenced by the same factors. On the other hand, the inverse correlation may be due to metabolic fractionation. No correlation was found between oxygen and carbon isotopic composition in Uvigerina. Dataset Neogloboquadrina pachyderma Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(-125.452000,-125.452000,39.961800,39.961800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
18-173 Calculated from stable oxygen isotopes Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg18 North Pacific/SLOPE Sample code/label Sea surface temperature annual mean |
spellingShingle |
18-173 Calculated from stable oxygen isotopes Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg18 North Pacific/SLOPE Sample code/label Sea surface temperature annual mean Kammer, Thomas W Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
topic_facet |
18-173 Calculated from stable oxygen isotopes Deep Sea Drilling Project DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Glomar Challenger Leg18 North Pacific/SLOPE Sample code/label Sea surface temperature annual mean |
description |
The oxygen isotope record of the planktonic foraminifera Globigerina bulloides and Neogloboquadrina pachyderma from Pliocene and early Pleistocene sediments at both DSDP site 173 and the Centerville Beach section in California suggests a large influx of isotopically light water in this area during late Pliocene and early Pleistocene time. Salinity may have been reduced by as much as 2 to 4 ‰. Surface sea water paleotemperatures for the lower Pliocene range from 9.5°C to 15.5°C. The oxygen isotope record of the benthonic genus Uvigerina shows little variation indicating environmental stability at depth. At DSDP site 173 the small variation in Uvigerina is due to variation in the oxygen isotopic composition of the oceans as glaciers waxed and waned. At the Centerville Beach section the oxygen isotopic composition of Uvigerina reflects the gradual shoaling of the Humboldt Basin. Carbon and oxygen isotope ratios in G. bulloides and N. pachyderma are inversely correlated at the 95% confidence level. This may indicate that the oxygen and carbon isotopic composition of foraminifera are influenced by the same factors. On the other hand, the inverse correlation may be due to metabolic fractionation. No correlation was found between oxygen and carbon isotopic composition in Uvigerina. |
format |
Dataset |
author |
Kammer, Thomas W |
author_facet |
Kammer, Thomas W |
author_sort |
Kammer, Thomas W |
title |
Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
title_short |
Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
title_full |
Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
title_fullStr |
Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
title_full_unstemmed |
Calculated surface water paleotemperatures for the lower Pliocene at DSDP Site 18-173 from the California continental slope (Table I) |
title_sort |
calculated surface water paleotemperatures for the lower pliocene at dsdp site 18-173 from the california continental slope (table i) |
publisher |
PANGAEA |
publishDate |
1979 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.691315 https://doi.org/10.1594/PANGAEA.691315 |
op_coverage |
LATITUDE: 39.961800 * LONGITUDE: -125.452000 * DATE/TIME START: 1971-06-09T00:00:00 * DATE/TIME END: 1971-06-09T00:00:00 * MINIMUM ELEVATION: -2927.0 m * MAXIMUM ELEVATION: -2927.0 m |
long_lat |
ENVELOPE(-125.452000,-125.452000,39.961800,39.961800) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma Planktonic foraminifera |
op_source |
Supplement to: Kammer, Thomas W (1979): Paleosalinity, paleotemperature, and isotopic fractionation records of Neogene foraminifera from DSDP site 173 and the Centerville Beach Section, California. Marine Micropaleontology, 4, 45-60, https://doi.org/10.1016/0377-8398(79)90005-7 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.691315 https://doi.org/10.1594/PANGAEA.691315 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.691315 https://doi.org/10.1016/0377-8398(79)90005-7 |
_version_ |
1766073107949289472 |