Mineralogical composition of the upper 300m of Hole 302-M0002A
During the Arctic Coring Expedition (ACEX), a 428-m-thick sequence of Upper Cretaceous to Quaternary sediments was penetrated. The mineralogical composition of the upper 300 m of this sequence is presented here for the first time. Heavy and clay mineral associations indicate a major and consistent s...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.707428 2023-05-15T13:42:09+02:00 Mineralogical composition of the upper 300m of Hole 302-M0002A Krylov, Alexey A Andreeva, Irina A Vogt, Christoph Backman, Jan Krupskaya, Viktoria V Grikurov, Garrik E Moran, Kathryn Shoji, Hitoshi LATITUDE: 87.921180 * LONGITUDE: 139.365010 * DATE/TIME START: 2004-08-19T00:00:00 * DATE/TIME END: 2004-08-19T00:00:00 2008-11-18 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.707428 https://doi.org/10.1594/PANGAEA.707428 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.707428 https://doi.org/10.1594/PANGAEA.707428 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Krylov, Alexey A; Andreeva, Irina A; Vogt, Christoph; Backman, Jan; Krupskaya, Viktoria V; Grikurov, Garrik E; Moran, Kathryn; Shoji, Hitoshi (2008): A shift in heavy and clay mineral provenance indicates a middle Miocene onset of a perennial sea ice cover in the Arctic Ocean. Paleoceanography, 23, PA1S06, https://doi.org/10.1029/2007PA001497 302-M0002A ACEX-M2A Arctic Coring Expedition ACEX Arctic Ocean Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.707428 https://doi.org/10.1029/2007PA001497 2023-01-20T07:31:16Z During the Arctic Coring Expedition (ACEX), a 428-m-thick sequence of Upper Cretaceous to Quaternary sediments was penetrated. The mineralogical composition of the upper 300 m of this sequence is presented here for the first time. Heavy and clay mineral associations indicate a major and consistent shift in provenance, from the Barents-Kara - western Laptev Sea region, characterized by presence of common clinopyroxene, to the eastern Laptev-East Siberian seas in the upper part of the section, characterized by common hornblende (amphibole). Sea ice originating from the latter source region must have survived at least one summer melt cycle in order to reach the ACEX drill site, if considering modern sea ice trajectories and velocities. This shift in mineral assemblages probably represents the onset of a perennial sea ice cover in the Arctic Ocean, which occurred at about 13 Ma, thus suggesting a coeval freeze in the Arctic and Antarctic regions. Dataset Antarc* Antarctic Arctic Arctic Arctic Ocean laptev Laptev Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic Arctic Ocean Laptev Sea ENVELOPE(139.365010,139.365010,87.921180,87.921180) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-M0002A ACEX-M2A Arctic Coring Expedition ACEX Arctic Ocean Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking |
spellingShingle |
302-M0002A ACEX-M2A Arctic Coring Expedition ACEX Arctic Ocean Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking Krylov, Alexey A Andreeva, Irina A Vogt, Christoph Backman, Jan Krupskaya, Viktoria V Grikurov, Garrik E Moran, Kathryn Shoji, Hitoshi Mineralogical composition of the upper 300m of Hole 302-M0002A |
topic_facet |
302-M0002A ACEX-M2A Arctic Coring Expedition ACEX Arctic Ocean Exp302 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Vidar Viking |
description |
During the Arctic Coring Expedition (ACEX), a 428-m-thick sequence of Upper Cretaceous to Quaternary sediments was penetrated. The mineralogical composition of the upper 300 m of this sequence is presented here for the first time. Heavy and clay mineral associations indicate a major and consistent shift in provenance, from the Barents-Kara - western Laptev Sea region, characterized by presence of common clinopyroxene, to the eastern Laptev-East Siberian seas in the upper part of the section, characterized by common hornblende (amphibole). Sea ice originating from the latter source region must have survived at least one summer melt cycle in order to reach the ACEX drill site, if considering modern sea ice trajectories and velocities. This shift in mineral assemblages probably represents the onset of a perennial sea ice cover in the Arctic Ocean, which occurred at about 13 Ma, thus suggesting a coeval freeze in the Arctic and Antarctic regions. |
format |
Dataset |
author |
Krylov, Alexey A Andreeva, Irina A Vogt, Christoph Backman, Jan Krupskaya, Viktoria V Grikurov, Garrik E Moran, Kathryn Shoji, Hitoshi |
author_facet |
Krylov, Alexey A Andreeva, Irina A Vogt, Christoph Backman, Jan Krupskaya, Viktoria V Grikurov, Garrik E Moran, Kathryn Shoji, Hitoshi |
author_sort |
Krylov, Alexey A |
title |
Mineralogical composition of the upper 300m of Hole 302-M0002A |
title_short |
Mineralogical composition of the upper 300m of Hole 302-M0002A |
title_full |
Mineralogical composition of the upper 300m of Hole 302-M0002A |
title_fullStr |
Mineralogical composition of the upper 300m of Hole 302-M0002A |
title_full_unstemmed |
Mineralogical composition of the upper 300m of Hole 302-M0002A |
title_sort |
mineralogical composition of the upper 300m of hole 302-m0002a |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.707428 https://doi.org/10.1594/PANGAEA.707428 |
op_coverage |
LATITUDE: 87.921180 * LONGITUDE: 139.365010 * DATE/TIME START: 2004-08-19T00:00:00 * DATE/TIME END: 2004-08-19T00:00:00 |
long_lat |
ENVELOPE(139.365010,139.365010,87.921180,87.921180) |
geographic |
Antarctic Arctic Arctic Ocean Laptev Sea |
geographic_facet |
Antarctic Arctic Arctic Ocean Laptev Sea |
genre |
Antarc* Antarctic Arctic Arctic Arctic Ocean laptev Laptev Sea Sea ice |
genre_facet |
Antarc* Antarctic Arctic Arctic Arctic Ocean laptev Laptev Sea Sea ice |
op_source |
Supplement to: Krylov, Alexey A; Andreeva, Irina A; Vogt, Christoph; Backman, Jan; Krupskaya, Viktoria V; Grikurov, Garrik E; Moran, Kathryn; Shoji, Hitoshi (2008): A shift in heavy and clay mineral provenance indicates a middle Miocene onset of a perennial sea ice cover in the Arctic Ocean. Paleoceanography, 23, PA1S06, https://doi.org/10.1029/2007PA001497 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.707428 https://doi.org/10.1594/PANGAEA.707428 |
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.707428 https://doi.org/10.1029/2007PA001497 |
_version_ |
1766163414811410432 |