Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data
In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay. Analytical techniques included petrographic analysis of gravel-sized clasts, geochronology (zirco...
Published in: | Geochemistry, Geophysics, Geosystems |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | http://hdl.handle.net/11365/1033561 https://doi.org/10.1002/2016GC006728 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027 |
id |
ftunivsiena:oai:usiena-air.unisi.it:11365/1033561 |
---|---|
record_format |
openpolar |
spelling |
ftunivsiena:oai:usiena-air.unisi.it:11365/1033561 2024-04-14T08:03:14+00:00 Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio 2017 ELETTRONICO http://hdl.handle.net/11365/1033561 https://doi.org/10.1002/2016GC006728 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000405585000014 volume:18 issue:6 firstpage:2275 lastpage:2304 numberofpages:30 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11365/1033561 doi:10.1002/2016GC006728 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85021314956 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027 info:eu-repo/semantics/openAccess Antarctica Eastern Ross Sea Last Glacial Maximum Marie Byrd Land sediment provenance Geophysic Geochemistry and Petrology info:eu-repo/semantics/article 2017 ftunivsiena https://doi.org/10.1002/2016GC006728 2024-03-21T16:11:15Z In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay. Analytical techniques included petrographic analysis of gravel-sized clasts, geochronology (zircon U-Pb: Zrn-UPb) and thermochronology (apatite fission track: AFT) of sand-sized fractions. Petrographic analysis revealed a similarity with the lithologies presently exposed in western Marie Byrd Land (MBL), with major roles played by low-grade metamorphic rocks and granitoids. Furthermore Zrn-UPb and AFT data allowed to identify the ages of formation and cooling of sedimentary source area, consisting of Cambrian-Precambrian basement (i.e., Swanson Formation in western MBL) which underwent at least two episodes of magma intrusion, migmatization and cooling during Devonian-Carboniferous and Cretaceous-Paleocene times. Scarcity of volcanic clasts in the region of Ross Sea along the front of West Antarctica Ice Streams in association with the occurrence of AFT Oligocene-Pliocene dates suggests a localized tectonic exhumation of portions of MBL, as already documented for the opposite side of West Antarctic Rift System in the Transantarctic Mountains. Furthermore, a Zrn-UPb and AFT population of Late Triassic-Jurassic age indicates the presence of unexposed rocks that formed or metamorphosed at that time in the sedimentary source area, which could be identified in McAyeal Ice Stream and Bindschadler Ice Stream catchment areas. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bindschadler Ice Stream Ice Sheet Marie Byrd Land Ross Sea Sulzberger Bay West Antarctica Università degli Studi di Siena: USiena air Antarctic Bindschadler Ice Stream ENVELOPE(-142.000,-142.000,-81.000,-81.000) Byrd Marie Byrd Land ENVELOPE(-130.000,-130.000,-78.000,-78.000) Ross Sea Sulzberger Bay ENVELOPE(-152.000,-152.000,-77.000,-77.000) Transantarctic Mountains West Antarctic Ice Sheet West Antarctica Geochemistry, Geophysics, Geosystems 18 6 2275 2304 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Antarctica Eastern Ross Sea Last Glacial Maximum Marie Byrd Land sediment provenance Geophysic Geochemistry and Petrology |
spellingShingle |
Antarctica Eastern Ross Sea Last Glacial Maximum Marie Byrd Land sediment provenance Geophysic Geochemistry and Petrology Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
topic_facet |
Antarctica Eastern Ross Sea Last Glacial Maximum Marie Byrd Land sediment provenance Geophysic Geochemistry and Petrology |
description |
In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay. Analytical techniques included petrographic analysis of gravel-sized clasts, geochronology (zircon U-Pb: Zrn-UPb) and thermochronology (apatite fission track: AFT) of sand-sized fractions. Petrographic analysis revealed a similarity with the lithologies presently exposed in western Marie Byrd Land (MBL), with major roles played by low-grade metamorphic rocks and granitoids. Furthermore Zrn-UPb and AFT data allowed to identify the ages of formation and cooling of sedimentary source area, consisting of Cambrian-Precambrian basement (i.e., Swanson Formation in western MBL) which underwent at least two episodes of magma intrusion, migmatization and cooling during Devonian-Carboniferous and Cretaceous-Paleocene times. Scarcity of volcanic clasts in the region of Ross Sea along the front of West Antarctica Ice Streams in association with the occurrence of AFT Oligocene-Pliocene dates suggests a localized tectonic exhumation of portions of MBL, as already documented for the opposite side of West Antarctic Rift System in the Transantarctic Mountains. Furthermore, a Zrn-UPb and AFT population of Late Triassic-Jurassic age indicates the presence of unexposed rocks that formed or metamorphosed at that time in the sedimentary source area, which could be identified in McAyeal Ice Stream and Bindschadler Ice Stream catchment areas. |
author2 |
Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio |
format |
Article in Journal/Newspaper |
author |
Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio |
author_facet |
Perotti, Matteo Andreucci, Benedetta Talarico, Franco Maria Zattin, Massimiliano Langone, Antonio |
author_sort |
Perotti, Matteo |
title |
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
title_short |
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
title_full |
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
title_fullStr |
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
title_full_unstemmed |
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data |
title_sort |
multianalytical provenance analysis of eastern ross sea lgm till sediments (antarctica): petrography, geochronology, and thermochronology detrital data |
publishDate |
2017 |
url |
http://hdl.handle.net/11365/1033561 https://doi.org/10.1002/2016GC006728 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027 |
long_lat |
ENVELOPE(-142.000,-142.000,-81.000,-81.000) ENVELOPE(-130.000,-130.000,-78.000,-78.000) ENVELOPE(-152.000,-152.000,-77.000,-77.000) |
geographic |
Antarctic Bindschadler Ice Stream Byrd Marie Byrd Land Ross Sea Sulzberger Bay Transantarctic Mountains West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Bindschadler Ice Stream Byrd Marie Byrd Land Ross Sea Sulzberger Bay Transantarctic Mountains West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Bindschadler Ice Stream Ice Sheet Marie Byrd Land Ross Sea Sulzberger Bay West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Bindschadler Ice Stream Ice Sheet Marie Byrd Land Ross Sea Sulzberger Bay West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000405585000014 volume:18 issue:6 firstpage:2275 lastpage:2304 numberofpages:30 journal:GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS http://hdl.handle.net/11365/1033561 doi:10.1002/2016GC006728 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85021314956 http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1525-2027 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GC006728 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
18 |
container_issue |
6 |
container_start_page |
2275 |
op_container_end_page |
2304 |
_version_ |
1796299499716476928 |