Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes
Recently the International Union of Geological Sciences (Commission on Stratigraphy, Working Group on the Paleogene/Neogene Boundary) proposed that the Oligocene/Miocene boundary be placed at the base of Chron C6Cn2n at 23.8 Ma on the Cande and Kent (1992) magnetic time scale, where it is approximat...
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1995
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.683554 2023-05-15T17:36:39+02:00 Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes Sanfilippo, Annika Nigrini, Catherine A MEDIAN LATITUDE: 3.205231 * MEDIAN LONGITUDE: -136.435623 * SOUTH-BOUND LATITUDE: -11.001500 * WEST-BOUND LONGITUDE: 158.511500 * NORTH-BOUND LATITUDE: 15.116500 * EAST-BOUND LONGITUDE: -19.851300 * DATE/TIME START: 1969-08-31T00:00:00 * DATE/TIME END: 1982-04-11T00:00:00 1995-02-21 application/zip, 13 datasets https://doi.pangaea.de/10.1594/PANGAEA.683554 https://doi.org/10.1594/PANGAEA.683554 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.683554 https://doi.org/10.1594/PANGAEA.683554 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sanfilippo, Annika; Nigrini, Catherine A (1995): Radiolarian stratigraphy across the Oligocene/Miocene transition. Marine Micropaleontology, 24(3-4), 239-285, https://doi.org/10.1016/0377-8398(94)00015-F 15-146 30-289 33-315A 33-317B 41-366A 7-64_Site 85-573B 85-574C 8-69_Site 8-70A 8-71 9-77B 9-78 Caribbean Sea/BASIN COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg15 Leg30 Leg33 Leg41 Leg7 Leg8 Leg85 Leg9 North Atlantic/CONT RISE North Pacific/BASIN North Pacific/CONT RISE North Pacific/FAN North Pacific/HILL North Pacific/PLAIN North Pacific/TROUGH South Pacific/PLATEAU Dataset 1995 ftpangaea https://doi.org/10.1594/PANGAEA.683554 https://doi.org/10.1016/0377-8398(94)00015-F 2023-01-20T07:31:07Z Recently the International Union of Geological Sciences (Commission on Stratigraphy, Working Group on the Paleogene/Neogene Boundary) proposed that the Oligocene/Miocene boundary be placed at the base of Chron C6Cn2n at 23.8 Ma on the Cande and Kent (1992) magnetic time scale, where it is approximated by planktic foraminifera at the first occurrence of Globorotulia kugleri, and by calcareous nannofossils at the last occurrence of Sphenolithus ciperoensis and the first and last occurrences of Sphenolithus delphix and S. capricornutus. Herein we show that, in terms of radiolarians, the base of Chron C6Cn2n can be correlated with the upper part of the Lychnocanoma elongata Zone between the last occurrence of Artophormis gracilis (23.94 Ma) and the first occurrence of Cyrtocapsella tetrapera (23.69 Ma). Since the proposed stratotype at Lemme-Carrosio (Italy) does not contain radiolarians at the boundary, we re-examined 13 DSDP sites and established the stratigraphic sequence of 29 first and last radiolarian occurrences and one evolutionary transition across the boundary. Nine of these sites contain both calcareous and siliceous microfossils and thus allow for an integrated biostratigraphy. Paleomagnetic stratigraphy is not available for any of the DSDP cores examined. However, use of Hodell and Woodruff's (1994) strontium isotope curve from DSDP Site 289 has permitted calibration of several low latitude microfossil datum levels against the geomagnetic polarity scale. Two new species, Lychnocanoma apodora and Eucyrtidium plesiodiaphanes, are described. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(158.511500,-19.851300,15.116500,-11.001500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
15-146 30-289 33-315A 33-317B 41-366A 7-64_Site 85-573B 85-574C 8-69_Site 8-70A 8-71 9-77B 9-78 Caribbean Sea/BASIN COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg15 Leg30 Leg33 Leg41 Leg7 Leg8 Leg85 Leg9 North Atlantic/CONT RISE North Pacific/BASIN North Pacific/CONT RISE North Pacific/FAN North Pacific/HILL North Pacific/PLAIN North Pacific/TROUGH South Pacific/PLATEAU |
spellingShingle |
15-146 30-289 33-315A 33-317B 41-366A 7-64_Site 85-573B 85-574C 8-69_Site 8-70A 8-71 9-77B 9-78 Caribbean Sea/BASIN COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg15 Leg30 Leg33 Leg41 Leg7 Leg8 Leg85 Leg9 North Atlantic/CONT RISE North Pacific/BASIN North Pacific/CONT RISE North Pacific/FAN North Pacific/HILL North Pacific/PLAIN North Pacific/TROUGH South Pacific/PLATEAU Sanfilippo, Annika Nigrini, Catherine A Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
topic_facet |
15-146 30-289 33-315A 33-317B 41-366A 7-64_Site 85-573B 85-574C 8-69_Site 8-70A 8-71 9-77B 9-78 Caribbean Sea/BASIN COMPCORE Composite Core Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Leg15 Leg30 Leg33 Leg41 Leg7 Leg8 Leg85 Leg9 North Atlantic/CONT RISE North Pacific/BASIN North Pacific/CONT RISE North Pacific/FAN North Pacific/HILL North Pacific/PLAIN North Pacific/TROUGH South Pacific/PLATEAU |
description |
Recently the International Union of Geological Sciences (Commission on Stratigraphy, Working Group on the Paleogene/Neogene Boundary) proposed that the Oligocene/Miocene boundary be placed at the base of Chron C6Cn2n at 23.8 Ma on the Cande and Kent (1992) magnetic time scale, where it is approximated by planktic foraminifera at the first occurrence of Globorotulia kugleri, and by calcareous nannofossils at the last occurrence of Sphenolithus ciperoensis and the first and last occurrences of Sphenolithus delphix and S. capricornutus. Herein we show that, in terms of radiolarians, the base of Chron C6Cn2n can be correlated with the upper part of the Lychnocanoma elongata Zone between the last occurrence of Artophormis gracilis (23.94 Ma) and the first occurrence of Cyrtocapsella tetrapera (23.69 Ma). Since the proposed stratotype at Lemme-Carrosio (Italy) does not contain radiolarians at the boundary, we re-examined 13 DSDP sites and established the stratigraphic sequence of 29 first and last radiolarian occurrences and one evolutionary transition across the boundary. Nine of these sites contain both calcareous and siliceous microfossils and thus allow for an integrated biostratigraphy. Paleomagnetic stratigraphy is not available for any of the DSDP cores examined. However, use of Hodell and Woodruff's (1994) strontium isotope curve from DSDP Site 289 has permitted calibration of several low latitude microfossil datum levels against the geomagnetic polarity scale. Two new species, Lychnocanoma apodora and Eucyrtidium plesiodiaphanes, are described. |
format |
Dataset |
author |
Sanfilippo, Annika Nigrini, Catherine A |
author_facet |
Sanfilippo, Annika Nigrini, Catherine A |
author_sort |
Sanfilippo, Annika |
title |
Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
title_short |
Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
title_full |
Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
title_fullStr |
Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
title_full_unstemmed |
Radiolarian stratigraphy across the Oligocene/Miocene transition in low latitudes |
title_sort |
radiolarian stratigraphy across the oligocene/miocene transition in low latitudes |
publisher |
PANGAEA |
publishDate |
1995 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.683554 https://doi.org/10.1594/PANGAEA.683554 |
op_coverage |
MEDIAN LATITUDE: 3.205231 * MEDIAN LONGITUDE: -136.435623 * SOUTH-BOUND LATITUDE: -11.001500 * WEST-BOUND LONGITUDE: 158.511500 * NORTH-BOUND LATITUDE: 15.116500 * EAST-BOUND LONGITUDE: -19.851300 * DATE/TIME START: 1969-08-31T00:00:00 * DATE/TIME END: 1982-04-11T00:00:00 |
long_lat |
ENVELOPE(158.511500,-19.851300,15.116500,-11.001500) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Sanfilippo, Annika; Nigrini, Catherine A (1995): Radiolarian stratigraphy across the Oligocene/Miocene transition. Marine Micropaleontology, 24(3-4), 239-285, https://doi.org/10.1016/0377-8398(94)00015-F |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.683554 https://doi.org/10.1594/PANGAEA.683554 |
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.683554 https://doi.org/10.1016/0377-8398(94)00015-F |
_version_ |
1766136207118434304 |