Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic
In an attempt to document the palaeoecological affinities of individual extant and extinct dinoflagellate cysts, Late Pliocene and Early Pleistocene dinoflagellate cyst assemblages have been compared with geochemical data from the same samples. Mg/Ca ratios of Globigerina bulloides were measured to...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758713 2023-05-15T17:27:53+02:00 Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic De Schepper, Stijn Fischer, Eva I Groeneveld, Jeroen Head, Martin J Matthiessen, Jens MEDIAN LATITUDE: 44.502909 * MEDIAN LONGITUDE: -42.344065 * SOUTH-BOUND LATITUDE: 35.496300 * WEST-BOUND LONGITUDE: -70.031000 * NORTH-BOUND LATITUDE: 53.221500 * EAST-BOUND LONGITUDE: -18.886800 * DATE/TIME START: 1983-05-05T00:00:00 * DATE/TIME END: 1983-07-28T00:00:00 2011-03-29 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.758713 https://doi.org/10.1594/PANGAEA.758713 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.758713 https://doi.org/10.1594/PANGAEA.758713 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: De Schepper, Stijn; Fischer, Eva I; Groeneveld, Jeroen; Head, Martin J; Matthiessen, Jens (2011): Deciphering the palaeoecology of Late Pliocene and Early Pleistocene dinoflagellate cysts. Palaeogeography, Palaeoclimatology, Palaeoecology, 309(1-2), 17-32, https://doi.org/10.1016/j.palaeo.2011.04.020 303-U1308A 303-U1308C 306-U1313B 306-U1313C 93-603C 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Exp303 Exp306 Glomar Challenger Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Leg93 Leg94 North Atlantic/RIDGE North Atlantic Climate 1 North Atlantic Climate 2 Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.758713 https://doi.org/10.1016/j.palaeo.2011.04.020 2023-01-20T07:32:06Z In an attempt to document the palaeoecological affinities of individual extant and extinct dinoflagellate cysts, Late Pliocene and Early Pleistocene dinoflagellate cyst assemblages have been compared with geochemical data from the same samples. Mg/Ca ratios of Globigerina bulloides were measured to estimate the spring-summer sea-surface temperatures from four North Atlantic IODP/DSDP sites. Currently, our Pliocene-Pleistocene database contains 204 dinoflagellate cyst samples calibrated to geochemical data. This palaeo-database is compared with modern North Atlantic and global datasets. The focus lies in the quantitative relationship between Mg/Ca-based (i.e. spring-summer) sea-surface temperature (SSTMg/Ca) and dinoflagellate cyst distributions. In general, extant species are shown to have comparable spring-summer SST ranges in the past and today, demonstrating that our new approach is valid for inferring spring-summer SST ranges for extinct species. For example, Habibacysta tectata represents SSTMg/Ca values between 10° and 15°C when it exceeds 30% of the assemblage, and Invertocysta lacrymosa exceeds 15% when SSTMg/Ca values are between 18.6° and 23.5°C. However, comparing Pliocene and Pleistocene SSTMg/Ca values with present day summer values for the extant Impagidinium pallidum suggests a greater tolerance of higher temperatures in the past. This species occupies more than 5% of the assemblage at SSTMg/Ca values of 11.6-17.9°C in the Pliocene and Pleistocene, whereas present day summer SSTs are around -1.7 to 6.9°C. This observation questions the value of Impagidinium pallidum as reliable indicator of cold waters in older deposits, and may explain its bipolar distribution. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-70.031000,-18.886800,53.221500,35.496300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
303-U1308A 303-U1308C 306-U1313B 306-U1313C 93-603C 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Exp303 Exp306 Glomar Challenger Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Leg93 Leg94 North Atlantic/RIDGE North Atlantic Climate 1 North Atlantic Climate 2 |
spellingShingle |
303-U1308A 303-U1308C 306-U1313B 306-U1313C 93-603C 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Exp303 Exp306 Glomar Challenger Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Leg93 Leg94 North Atlantic/RIDGE North Atlantic Climate 1 North Atlantic Climate 2 De Schepper, Stijn Fischer, Eva I Groeneveld, Jeroen Head, Martin J Matthiessen, Jens Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
topic_facet |
303-U1308A 303-U1308C 306-U1313B 306-U1313C 93-603C 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Exp303 Exp306 Glomar Challenger Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Leg93 Leg94 North Atlantic/RIDGE North Atlantic Climate 1 North Atlantic Climate 2 |
description |
In an attempt to document the palaeoecological affinities of individual extant and extinct dinoflagellate cysts, Late Pliocene and Early Pleistocene dinoflagellate cyst assemblages have been compared with geochemical data from the same samples. Mg/Ca ratios of Globigerina bulloides were measured to estimate the spring-summer sea-surface temperatures from four North Atlantic IODP/DSDP sites. Currently, our Pliocene-Pleistocene database contains 204 dinoflagellate cyst samples calibrated to geochemical data. This palaeo-database is compared with modern North Atlantic and global datasets. The focus lies in the quantitative relationship between Mg/Ca-based (i.e. spring-summer) sea-surface temperature (SSTMg/Ca) and dinoflagellate cyst distributions. In general, extant species are shown to have comparable spring-summer SST ranges in the past and today, demonstrating that our new approach is valid for inferring spring-summer SST ranges for extinct species. For example, Habibacysta tectata represents SSTMg/Ca values between 10° and 15°C when it exceeds 30% of the assemblage, and Invertocysta lacrymosa exceeds 15% when SSTMg/Ca values are between 18.6° and 23.5°C. However, comparing Pliocene and Pleistocene SSTMg/Ca values with present day summer values for the extant Impagidinium pallidum suggests a greater tolerance of higher temperatures in the past. This species occupies more than 5% of the assemblage at SSTMg/Ca values of 11.6-17.9°C in the Pliocene and Pleistocene, whereas present day summer SSTs are around -1.7 to 6.9°C. This observation questions the value of Impagidinium pallidum as reliable indicator of cold waters in older deposits, and may explain its bipolar distribution. |
format |
Dataset |
author |
De Schepper, Stijn Fischer, Eva I Groeneveld, Jeroen Head, Martin J Matthiessen, Jens |
author_facet |
De Schepper, Stijn Fischer, Eva I Groeneveld, Jeroen Head, Martin J Matthiessen, Jens |
author_sort |
De Schepper, Stijn |
title |
Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
title_short |
Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
title_full |
Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
title_fullStr |
Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
title_full_unstemmed |
Late Pliocene and Early Pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several IODP and DSDP sites in the North Atlantic |
title_sort |
late pliocene and early pleistocene dinoflagellate cysts and sea surface temperture reconstruction for several iodp and dsdp sites in the north atlantic |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.758713 https://doi.org/10.1594/PANGAEA.758713 |
op_coverage |
MEDIAN LATITUDE: 44.502909 * MEDIAN LONGITUDE: -42.344065 * SOUTH-BOUND LATITUDE: 35.496300 * WEST-BOUND LONGITUDE: -70.031000 * NORTH-BOUND LATITUDE: 53.221500 * EAST-BOUND LONGITUDE: -18.886800 * DATE/TIME START: 1983-05-05T00:00:00 * DATE/TIME END: 1983-07-28T00:00:00 |
long_lat |
ENVELOPE(-70.031000,-18.886800,53.221500,35.496300) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: De Schepper, Stijn; Fischer, Eva I; Groeneveld, Jeroen; Head, Martin J; Matthiessen, Jens (2011): Deciphering the palaeoecology of Late Pliocene and Early Pleistocene dinoflagellate cysts. Palaeogeography, Palaeoclimatology, Palaeoecology, 309(1-2), 17-32, https://doi.org/10.1016/j.palaeo.2011.04.020 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.758713 https://doi.org/10.1594/PANGAEA.758713 |
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.758713 https://doi.org/10.1016/j.palaeo.2011.04.020 |
_version_ |
1766120213838823424 |