Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica
Marine diatoms are the primary biostratigraphical and paleoenvironmental tool for interpreting the upper Palaeogene and lower Neogene strata recovered during the second drilling season of the Cape Roberts Project at site CRP-2 in the western Ross Sea, Antarctica. Silicoflagellates, ebridians, and a...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2000
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.510754 https://doi.org/10.1594/PANGAEA.510754 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.510754 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.510754 2023-05-15T13:42:09+02:00 Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica Scherer, Reed P Bohaty, Steven M Harwood, David M LATITUDE: -77.005981 * LONGITUDE: 163.719450 * DATE/TIME START: 1998-10-01T00:00:00 * DATE/TIME END: 1998-11-25T14:20:00 2000-04-16 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.510754 https://doi.org/10.1594/PANGAEA.510754 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.510754 https://doi.org/10.1594/PANGAEA.510754 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Scherer, Reed P; Bohaty, Steven M; Harwood, David M (2000): Oligocene and lower Miocene siliceous microfossil biostratigraphy of Cape Roberts Project Core CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 417-442, hdl:10013/epic.28240.d001 14.2 km at 096° true from Cape Roberts Cape Roberts Project Core wireline system CRP CRP-2 CRP-2A CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling from ice Dataset 2000 ftpangaea https://doi.org/10.1594/PANGAEA.510754 2023-01-20T07:30:59Z Marine diatoms are the primary biostratigraphical and paleoenvironmental tool for interpreting the upper Palaeogene and lower Neogene strata recovered during the second drilling season of the Cape Roberts Project at site CRP-2 in the western Ross Sea, Antarctica. Silicoflagellates, ebridians, and a chrysophyte cyst provide supporting biostratigraphical information. More than 100 dominantly planktic diatom taxa are recognised. Of these, more than 30 are treated informally, pending SEM examination and formal description. Many other taxa are noted only to generic level. Lower Oligocene (c. 31 Ma) through lower Miocene (c. 18.5 Ma) diatoms occur from 28 mbsf down to 565 mbsf. Below this level, to the bottom of the hole at 624.15 mbsf, diatom assemblages are poorly-preserved and many samples are barren. A biostratigraphic zonal framework, consisting of ten diatom zones, is proposed for the Antarctic continental shelf. Ages inferred from the diatom biostratigraphy correspond well with geochronological data from argon dating of volcanic materials and strontium dating of calcareous macrofossils, as well as nannofossil biochronological datums. The biochronostratigraphical record from CRP-2/2A provides an important record of diatom events and mid-Cenozoic environmental changes in the Antarctic neritic zone. Dataset Antarc* Antarctic Antarctica Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Roberts Cape ENVELOPE(163.200,163.200,-77.033,-77.033) Ross Sea The Antarctic ENVELOPE(163.719450,163.719450,-77.005981,-77.005981) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
14.2 km at 096° true from Cape Roberts Cape Roberts Project Core wireline system CRP CRP-2 CRP-2A CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling from ice |
spellingShingle |
14.2 km at 096° true from Cape Roberts Cape Roberts Project Core wireline system CRP CRP-2 CRP-2A CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling from ice Scherer, Reed P Bohaty, Steven M Harwood, David M Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
topic_facet |
14.2 km at 096° true from Cape Roberts Cape Roberts Project Core wireline system CRP CRP-2 CRP-2A CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling from ice |
description |
Marine diatoms are the primary biostratigraphical and paleoenvironmental tool for interpreting the upper Palaeogene and lower Neogene strata recovered during the second drilling season of the Cape Roberts Project at site CRP-2 in the western Ross Sea, Antarctica. Silicoflagellates, ebridians, and a chrysophyte cyst provide supporting biostratigraphical information. More than 100 dominantly planktic diatom taxa are recognised. Of these, more than 30 are treated informally, pending SEM examination and formal description. Many other taxa are noted only to generic level. Lower Oligocene (c. 31 Ma) through lower Miocene (c. 18.5 Ma) diatoms occur from 28 mbsf down to 565 mbsf. Below this level, to the bottom of the hole at 624.15 mbsf, diatom assemblages are poorly-preserved and many samples are barren. A biostratigraphic zonal framework, consisting of ten diatom zones, is proposed for the Antarctic continental shelf. Ages inferred from the diatom biostratigraphy correspond well with geochronological data from argon dating of volcanic materials and strontium dating of calcareous macrofossils, as well as nannofossil biochronological datums. The biochronostratigraphical record from CRP-2/2A provides an important record of diatom events and mid-Cenozoic environmental changes in the Antarctic neritic zone. |
format |
Dataset |
author |
Scherer, Reed P Bohaty, Steven M Harwood, David M |
author_facet |
Scherer, Reed P Bohaty, Steven M Harwood, David M |
author_sort |
Scherer, Reed P |
title |
Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
title_short |
Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
title_full |
Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
title_fullStr |
Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
title_full_unstemmed |
Investigation of microfossils on sediment core CRP-2 from the Ross Sea, Antarctica |
title_sort |
investigation of microfossils on sediment core crp-2 from the ross sea, antarctica |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.510754 https://doi.org/10.1594/PANGAEA.510754 |
op_coverage |
LATITUDE: -77.005981 * LONGITUDE: 163.719450 * DATE/TIME START: 1998-10-01T00:00:00 * DATE/TIME END: 1998-11-25T14:20:00 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(163.200,163.200,-77.033,-77.033) ENVELOPE(163.719450,163.719450,-77.005981,-77.005981) |
geographic |
Antarctic Cape Roberts Roberts Cape Ross Sea The Antarctic |
geographic_facet |
Antarctic Cape Roberts Roberts Cape Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_source |
Supplement to: Scherer, Reed P; Bohaty, Steven M; Harwood, David M (2000): Oligocene and lower Miocene siliceous microfossil biostratigraphy of Cape Roberts Project Core CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 417-442, hdl:10013/epic.28240.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.510754 https://doi.org/10.1594/PANGAEA.510754 |
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.510754 |
_version_ |
1766163130841300992 |