Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean
Seven Ocean Drilling Program (ODP) sites recovered during ODP Leg 177 in the Atlantic sector of the Southern Ocean were analyzed to study the Pleistocene calcareous nannofossil record. Calcareous nannofossil events previously described from intermediate and low latitudes were identified and calibrat...
Main Authors: | , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2002
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.686248 https://doi.org/10.1594/PANGAEA.686248 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.686248 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.686248 2024-09-15T18:36:31+00:00 Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean Flores, José-Abel Marino, Maria MEDIAN LATITUDE: -45.949790 * MEDIAN LONGITUDE: 8.050035 * SOUTH-BOUND LATITUDE: -53.180350 * WEST-BOUND LONGITUDE: 5.130333 * NORTH-BOUND LATITUDE: -40.936333 * EAST-BOUND LONGITUDE: 13.562830 * DATE/TIME START: 1997-12-17T09:45:00 * DATE/TIME END: 1998-01-20T00:00:00 2002 application/zip, 14 datasets https://doi.pangaea.de/10.1594/PANGAEA.686248 https://doi.org/10.1594/PANGAEA.686248 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.686248 https://doi.org/10.1594/PANGAEA.686248 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Flores, José-Abel; Marino, Maria (2002): Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177 (Atlantic sector of the Southern Ocean). Marine Micropaleontology, 45(3-4), 191-224, https://doi.org/10.1016/S0377-8398(02)00030-0 177-1088B 177-1089 177-1090 177-1091A 177-1092 177-1093 177-1094 COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean dataset publication series 2002 ftpangaea https://doi.org/10.1594/PANGAEA.68624810.1016/S0377-8398(02)00030-0 2024-07-24T02:31:42Z Seven Ocean Drilling Program (ODP) sites recovered during ODP Leg 177 in the Atlantic sector of the Southern Ocean were analyzed to study the Pleistocene calcareous nannofossil record. Calcareous nannofossil events previously described from intermediate and low latitudes were identified and calibrated with available geomagnetic and stable isotope stratigraphic data. In general, Pleistocene southern high latitude calcareous nannofossil events show synchronicity with those observed from warm and temperate latitudes. The first occurrence (FO) of Emiliania huxleyi and the last occurrence (LO) of Pseudoemiliania lacunosa are observed in marine isotope stages (MIS) 8 and 12, respectively. A reversal in abundance between Gephyrocapsa muellerae and E. huxleyi is observed at MIS 5. MIS 6 is characterized by an increase in G. muellerae and MIS 7 features a dramatic decrease in the proportion of Gephyrocapsa caribbeanica. This latter species began to increase its proportions from MIS 14 to 13. The LO of Reticulofenestra asanoi is observed within subchron C1r.1r and the FO of R. asanoi occurs at the top of C1r.2r. A reentry of medium-sized Gephyrocapsa can be identified in some cores during subchron C1r.1n. The LO of large morphotypes of Gephyrocapsa is well correlated through the studied area, and occurs during the middle-low part of subchron C1r.2r,synchronous with other oceanic regions. The FO of Calcidiscus macintyrei and FO of medium-sized Gephyrocapsa occur in the studied area close to 1.6 Ma. Other/Unknown Material South Atlantic Ocean Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(5.130333,13.562830,-40.936333,-53.180350) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
177-1088B 177-1089 177-1090 177-1091A 177-1092 177-1093 177-1094 COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean |
spellingShingle |
177-1088B 177-1089 177-1090 177-1091A 177-1092 177-1093 177-1094 COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean Flores, José-Abel Marino, Maria Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
topic_facet |
177-1088B 177-1089 177-1090 177-1091A 177-1092 177-1093 177-1094 COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg177 Ocean Drilling Program ODP South Atlantic Ocean |
description |
Seven Ocean Drilling Program (ODP) sites recovered during ODP Leg 177 in the Atlantic sector of the Southern Ocean were analyzed to study the Pleistocene calcareous nannofossil record. Calcareous nannofossil events previously described from intermediate and low latitudes were identified and calibrated with available geomagnetic and stable isotope stratigraphic data. In general, Pleistocene southern high latitude calcareous nannofossil events show synchronicity with those observed from warm and temperate latitudes. The first occurrence (FO) of Emiliania huxleyi and the last occurrence (LO) of Pseudoemiliania lacunosa are observed in marine isotope stages (MIS) 8 and 12, respectively. A reversal in abundance between Gephyrocapsa muellerae and E. huxleyi is observed at MIS 5. MIS 6 is characterized by an increase in G. muellerae and MIS 7 features a dramatic decrease in the proportion of Gephyrocapsa caribbeanica. This latter species began to increase its proportions from MIS 14 to 13. The LO of Reticulofenestra asanoi is observed within subchron C1r.1r and the FO of R. asanoi occurs at the top of C1r.2r. A reentry of medium-sized Gephyrocapsa can be identified in some cores during subchron C1r.1n. The LO of large morphotypes of Gephyrocapsa is well correlated through the studied area, and occurs during the middle-low part of subchron C1r.2r,synchronous with other oceanic regions. The FO of Calcidiscus macintyrei and FO of medium-sized Gephyrocapsa occur in the studied area close to 1.6 Ma. |
format |
Other/Unknown Material |
author |
Flores, José-Abel Marino, Maria |
author_facet |
Flores, José-Abel Marino, Maria |
author_sort |
Flores, José-Abel |
title |
Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
title_short |
Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
title_full |
Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
title_fullStr |
Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
title_full_unstemmed |
Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177, Atlantic sector of the Southern Ocean |
title_sort |
pleistocene calcareous nannofossil stratigraphy for odp leg 177, atlantic sector of the southern ocean |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.686248 https://doi.org/10.1594/PANGAEA.686248 |
op_coverage |
MEDIAN LATITUDE: -45.949790 * MEDIAN LONGITUDE: 8.050035 * SOUTH-BOUND LATITUDE: -53.180350 * WEST-BOUND LONGITUDE: 5.130333 * NORTH-BOUND LATITUDE: -40.936333 * EAST-BOUND LONGITUDE: 13.562830 * DATE/TIME START: 1997-12-17T09:45:00 * DATE/TIME END: 1998-01-20T00:00:00 |
long_lat |
ENVELOPE(5.130333,13.562830,-40.936333,-53.180350) |
genre |
South Atlantic Ocean Southern Ocean |
genre_facet |
South Atlantic Ocean Southern Ocean |
op_source |
Supplement to: Flores, José-Abel; Marino, Maria (2002): Pleistocene calcareous nannofossil stratigraphy for ODP Leg 177 (Atlantic sector of the Southern Ocean). Marine Micropaleontology, 45(3-4), 191-224, https://doi.org/10.1016/S0377-8398(02)00030-0 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.686248 https://doi.org/10.1594/PANGAEA.686248 |
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.68624810.1016/S0377-8398(02)00030-0 |
_version_ |
1810480182177300480 |