Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica
A diagenetic study was carried out on the cored Miocene section in CRP-1 by thin-section, X-ray diffraction, scanning electron microscope, electron microprobe and stable isotopic analysis. Carbonate (calcite, siderite) microconcretions occur locally within intergranular pores and open fractures, and...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.510749 2023-05-15T13:42:09+02:00 Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica Baker, Julian C Fielding, Christopher R LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 1998-01-15 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.510749 https://doi.org/10.1594/PANGAEA.510749 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.510749 https://doi.org/10.1594/PANGAEA.510749 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Baker, Julian C; Fielding, Christopher R (1998): Diagenesis of glacimarine Miocene strata in CRP-1, Antarctica. Terra Antartica, 5(3), 647-653, hdl:10013/epic.28345.d001 16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.510749 2023-01-20T07:30:59Z A diagenetic study was carried out on the cored Miocene section in CRP-1 by thin-section, X-ray diffraction, scanning electron microscope, electron microprobe and stable isotopic analysis. Carbonate (calcite, siderite) microconcretions occur locally within intergranular pores and open fractures, and some sands are cemented by microcrystalline calcite. Calcite cement at 115.12 mbsf (metres below sea floor) and possibly microconcretionary calcite at 44.62 mbsf record infiltration of meteoric waters into the section, consistent with sequence stratigraphic evidence for multiple glacial advances over the CRP-1 drillsite. Diagenetic carbonates incorporated carbon derived from both organic matter and marine carbonate. Carbon isotope data are consistent with microconcretion formation at shallow depths. Sandstones are poorly compacted and, despite containing a large component of chemically unstable grains, are virtually unaltered. Preservation of the chemically unstable grain component reflects the cold climate depositional setting and shallow maximum burial depths. Dataset Antarc* Antarctica Ross Sea PANGAEA - Data Publisher for Earth & Environmental Science Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Roberts Cape ENVELOPE(163.200,163.200,-77.033,-77.033) Ross Sea ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
spellingShingle |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice Baker, Julian C Fielding, Christopher R Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
topic_facet |
16 km ENE Cape Roberts Cape Roberts Project Core wireline system CRP CRP-1 CWS off Cape Roberts Ross Sea Antarctica Sampling/drilling ice |
description |
A diagenetic study was carried out on the cored Miocene section in CRP-1 by thin-section, X-ray diffraction, scanning electron microscope, electron microprobe and stable isotopic analysis. Carbonate (calcite, siderite) microconcretions occur locally within intergranular pores and open fractures, and some sands are cemented by microcrystalline calcite. Calcite cement at 115.12 mbsf (metres below sea floor) and possibly microconcretionary calcite at 44.62 mbsf record infiltration of meteoric waters into the section, consistent with sequence stratigraphic evidence for multiple glacial advances over the CRP-1 drillsite. Diagenetic carbonates incorporated carbon derived from both organic matter and marine carbonate. Carbon isotope data are consistent with microconcretion formation at shallow depths. Sandstones are poorly compacted and, despite containing a large component of chemically unstable grains, are virtually unaltered. Preservation of the chemically unstable grain component reflects the cold climate depositional setting and shallow maximum burial depths. |
format |
Dataset |
author |
Baker, Julian C Fielding, Christopher R |
author_facet |
Baker, Julian C Fielding, Christopher R |
author_sort |
Baker, Julian C |
title |
Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
title_short |
Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
title_full |
Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
title_fullStr |
Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
title_full_unstemmed |
Investigation of diagenesis in sediment core CRP-1 from the Ross Sea, Antarctica |
title_sort |
investigation of diagenesis in sediment core crp-1 from the ross sea, antarctica |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.510749 https://doi.org/10.1594/PANGAEA.510749 |
op_coverage |
LATITUDE: -77.007580 * LONGITUDE: 163.755080 * DATE/TIME START: 1997-10-17T01:30:00 * DATE/TIME END: 1997-10-24T02:00:00 |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) ENVELOPE(163.200,163.200,-77.033,-77.033) ENVELOPE(163.755080,163.755080,-77.007580,-77.007580) |
geographic |
Cape Roberts Roberts Cape Ross Sea |
geographic_facet |
Cape Roberts Roberts Cape Ross Sea |
genre |
Antarc* Antarctica Ross Sea |
genre_facet |
Antarc* Antarctica Ross Sea |
op_source |
Supplement to: Baker, Julian C; Fielding, Christopher R (1998): Diagenesis of glacimarine Miocene strata in CRP-1, Antarctica. Terra Antartica, 5(3), 647-653, hdl:10013/epic.28345.d001 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.510749 https://doi.org/10.1594/PANGAEA.510749 |
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.510749 |
_version_ |
1766163120740368384 |