Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea
Upper Pliocene and Pleistocene abundance fluctuations of the radiolarian Cycladophora davisiana (Ehrenberg) davisiana (Petrushevskaya) are documented from North Atlantic (Site 609) and Labrador Sea (Site 646B) to provide the first long-term correlation of its abundance fluctuations to oxygen isotope...
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1995
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.682041 2024-09-15T18:17:15+00:00 Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea Ciesielski, Paul F Bjorklund, Kjell R MEDIAN LATITUDE: 53.642767 * MEDIAN LONGITUDE: -34.305667 * SOUTH-BOUND LATITUDE: 49.877800 * WEST-BOUND LONGITUDE: -48.369100 * NORTH-BOUND LATITUDE: 58.209300 * EAST-BOUND LONGITUDE: -24.238200 * DATE/TIME START: 1983-07-22T00:00:00 * DATE/TIME END: 1985-10-13T21:01:00 1995 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.682041 https://doi.org/10.1594/PANGAEA.682041 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.682041 https://doi.org/10.1594/PANGAEA.682041 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Ciesielski, Paul F; Bjorklund, Kjell R (1995): Ecology, morphology, stratigraphy, and the paleoceanographic significance of Cycladophora davisiana davisiana. Part II: Stratigraphy in the North Atlantic (DSDP Site 609) and Labrador Sea (ODP Site 646B). Marine Micropaleontology, 25(1), 67-86, https://doi.org/10.1016/0377-8398(94)00027-K 105-646B 94-609 94-611 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Labrador Sea Leg105 Leg94 North Atlantic/FLANK North Atlantic/RIDGE Ocean Drilling Program ODP dataset publication series 1995 ftpangaea https://doi.org/10.1594/PANGAEA.68204110.1016/0377-8398(94)00027-K 2024-07-24T02:31:42Z Upper Pliocene and Pleistocene abundance fluctuations of the radiolarian Cycladophora davisiana (Ehrenberg) davisiana (Petrushevskaya) are documented from North Atlantic (Site 609) and Labrador Sea (Site 646B) to provide the first long-term correlation of its abundance fluctuations to oxygen isotope stages 1-114. Also examined are temporal and regional fluctuations in abundances C. d. davisiana and the global dispersal routes of the species. The first occurrence of C. d. davisiana in the eastern North Atlantic Ocean (Site 609) occurred between 2.586 and 2.435 Ma (oxygen isotope stages 109.66-102.19). During the early Matuyama Chron, prior to oxygen isotope stage 63, C. d. davisiana abundances were less than 1% and never greater than 12%, while abundances of greater than 5% are found in stages 65.71-73, 74, and 83-84. The initial major abundance peak (35.7%) of C. d. davisiana was noted near the stage 63/62 boundary. Abundance peaks of greater than 15%, between oxygen isotope stages 35 and 63, are limited to stages 63.02, 58.07, 55.07-54.26, and 50.76-50.22. These represent the only such abundance peaks detected during the first c. 1.5 million years of the species within the North Atlantic. The character of C. d. davisiana abundance fluctuations in Site 609 changes after oxygen isotope stage 35; average abundances are greater (7.7% vs. 4.3%) and abundance maxima of more than 15% are more frequent. Many, but not all, peak abundances of C. d. davisiana occur in glacial stages (e.g., 8, 14, 18, 20, 26, 30, 34, 50, 54, and 58). Increased abundances of the species are also noted in weak interglacial stages (e.g., stages 3, 23, 39, and 41), and significant cool periods of robust interglacial periods (e.g., late stage 11). Sample spacing is adequate in some stages to note some rapid changes in abundance near stage transitions (e.g., stages 4/5, 25/26, 62/63). The sample density in Holes 609 and 611 and the upper portion of 646B is sufficient to detect a synchroneity of many abundance maxima and minima among sites. Some ... Other/Unknown Material Labrador Sea North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-48.369100,-24.238200,58.209300,49.877800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
105-646B 94-609 94-611 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Labrador Sea Leg105 Leg94 North Atlantic/FLANK North Atlantic/RIDGE Ocean Drilling Program ODP |
spellingShingle |
105-646B 94-609 94-611 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Labrador Sea Leg105 Leg94 North Atlantic/FLANK North Atlantic/RIDGE Ocean Drilling Program ODP Ciesielski, Paul F Bjorklund, Kjell R Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
topic_facet |
105-646B 94-609 94-611 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Labrador Sea Leg105 Leg94 North Atlantic/FLANK North Atlantic/RIDGE Ocean Drilling Program ODP |
description |
Upper Pliocene and Pleistocene abundance fluctuations of the radiolarian Cycladophora davisiana (Ehrenberg) davisiana (Petrushevskaya) are documented from North Atlantic (Site 609) and Labrador Sea (Site 646B) to provide the first long-term correlation of its abundance fluctuations to oxygen isotope stages 1-114. Also examined are temporal and regional fluctuations in abundances C. d. davisiana and the global dispersal routes of the species. The first occurrence of C. d. davisiana in the eastern North Atlantic Ocean (Site 609) occurred between 2.586 and 2.435 Ma (oxygen isotope stages 109.66-102.19). During the early Matuyama Chron, prior to oxygen isotope stage 63, C. d. davisiana abundances were less than 1% and never greater than 12%, while abundances of greater than 5% are found in stages 65.71-73, 74, and 83-84. The initial major abundance peak (35.7%) of C. d. davisiana was noted near the stage 63/62 boundary. Abundance peaks of greater than 15%, between oxygen isotope stages 35 and 63, are limited to stages 63.02, 58.07, 55.07-54.26, and 50.76-50.22. These represent the only such abundance peaks detected during the first c. 1.5 million years of the species within the North Atlantic. The character of C. d. davisiana abundance fluctuations in Site 609 changes after oxygen isotope stage 35; average abundances are greater (7.7% vs. 4.3%) and abundance maxima of more than 15% are more frequent. Many, but not all, peak abundances of C. d. davisiana occur in glacial stages (e.g., 8, 14, 18, 20, 26, 30, 34, 50, 54, and 58). Increased abundances of the species are also noted in weak interglacial stages (e.g., stages 3, 23, 39, and 41), and significant cool periods of robust interglacial periods (e.g., late stage 11). Sample spacing is adequate in some stages to note some rapid changes in abundance near stage transitions (e.g., stages 4/5, 25/26, 62/63). The sample density in Holes 609 and 611 and the upper portion of 646B is sufficient to detect a synchroneity of many abundance maxima and minima among sites. Some ... |
format |
Other/Unknown Material |
author |
Ciesielski, Paul F Bjorklund, Kjell R |
author_facet |
Ciesielski, Paul F Bjorklund, Kjell R |
author_sort |
Ciesielski, Paul F |
title |
Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
title_short |
Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
title_full |
Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
title_fullStr |
Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
title_full_unstemmed |
Distribution of Cycladophora davisiana davisiana in upper Pliocene and Pleistocene sediments of the North Atlantic and Labrador Sea |
title_sort |
distribution of cycladophora davisiana davisiana in upper pliocene and pleistocene sediments of the north atlantic and labrador sea |
publisher |
PANGAEA |
publishDate |
1995 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.682041 https://doi.org/10.1594/PANGAEA.682041 |
op_coverage |
MEDIAN LATITUDE: 53.642767 * MEDIAN LONGITUDE: -34.305667 * SOUTH-BOUND LATITUDE: 49.877800 * WEST-BOUND LONGITUDE: -48.369100 * NORTH-BOUND LATITUDE: 58.209300 * EAST-BOUND LONGITUDE: -24.238200 * DATE/TIME START: 1983-07-22T00:00:00 * DATE/TIME END: 1985-10-13T21:01:00 |
long_lat |
ENVELOPE(-48.369100,-24.238200,58.209300,49.877800) |
genre |
Labrador Sea North Atlantic |
genre_facet |
Labrador Sea North Atlantic |
op_source |
Supplement to: Ciesielski, Paul F; Bjorklund, Kjell R (1995): Ecology, morphology, stratigraphy, and the paleoceanographic significance of Cycladophora davisiana davisiana. Part II: Stratigraphy in the North Atlantic (DSDP Site 609) and Labrador Sea (ODP Site 646B). Marine Micropaleontology, 25(1), 67-86, https://doi.org/10.1016/0377-8398(94)00027-K |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.682041 https://doi.org/10.1594/PANGAEA.682041 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.68204110.1016/0377-8398(94)00027-K |
_version_ |
1810455258365689856 |