Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records
Very few age controls exist for Quaternary deposits over the vast territory of the East Russian Arctic, which hampers dating of major environmental changes in this area and prevents their correlation to climatic changes in the Arctic and Pacific marine domains. We report a newly identified ~177 ka o...
Published in: | Geophysical Research Letters |
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Online Access: | https://oceanrep.geomar.de/id/eprint/21495/ https://oceanrep.geomar.de/id/eprint/21495/1/grl50645.pdf https://doi.org/10.1002/grl.50645 |
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ftoceanrep:oai:oceanrep.geomar.de:21495 2023-05-15T14:26:51+02:00 Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records Ponomareva, Vera Portnyagin, Maxim Derkachev, Alexander Juschus, Olaf Garbe-Schönberg, Dieter Nürnberg, Dirk 2013 text https://oceanrep.geomar.de/id/eprint/21495/ https://oceanrep.geomar.de/id/eprint/21495/1/grl50645.pdf https://doi.org/10.1002/grl.50645 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/21495/1/grl50645.pdf Ponomareva, V., Portnyagin, M. , Derkachev, A., Juschus, O., Garbe-Schönberg, D. and Nürnberg, D. (2013) Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records. Open Access Geophysical Research Letters, 40 . pp. 3538-3543. DOI 10.1002/grl.50645 <https://doi.org/10.1002/grl.50645>. doi:10.1002/grl.50645 info:eu-repo/semantics/openAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1002/grl.50645 2023-04-07T15:09:36Z Very few age controls exist for Quaternary deposits over the vast territory of the East Russian Arctic, which hampers dating of major environmental changes in this area and prevents their correlation to climatic changes in the Arctic and Pacific marine domains. We report a newly identified ~177 ka old Rauchua tephra, which has been dispersed over an area of >1,500,000 km2 and directly links terrestrial paleoenvironmental archives from Arctic Siberia with marine cores in the northwest Pacific, thus permitting their synchronization and dating. The Rauchua tephra can help to identify deposits formed in terrestrial and marine environments during the oxygen isotope stage 6.5 warming event. Chemical composition of volcanic glass from the Rauchua tephra points to its island-arc origin, while its spatial distribution singles out the Kamchatka volcanic arc as a source. The Rauchua tephra represents a previously unknown, large (magnitude >6.5) explosive eruption from the Kamchatka volcanic arc. Article in Journal/Newspaper Arctic Arctic Kamchatka Siberia OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Pacific Rauchua ENVELOPE(166.533,166.533,69.500,69.500) Geophysical Research Letters 40 14 3538 3543 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Very few age controls exist for Quaternary deposits over the vast territory of the East Russian Arctic, which hampers dating of major environmental changes in this area and prevents their correlation to climatic changes in the Arctic and Pacific marine domains. We report a newly identified ~177 ka old Rauchua tephra, which has been dispersed over an area of >1,500,000 km2 and directly links terrestrial paleoenvironmental archives from Arctic Siberia with marine cores in the northwest Pacific, thus permitting their synchronization and dating. The Rauchua tephra can help to identify deposits formed in terrestrial and marine environments during the oxygen isotope stage 6.5 warming event. Chemical composition of volcanic glass from the Rauchua tephra points to its island-arc origin, while its spatial distribution singles out the Kamchatka volcanic arc as a source. The Rauchua tephra represents a previously unknown, large (magnitude >6.5) explosive eruption from the Kamchatka volcanic arc. |
format |
Article in Journal/Newspaper |
author |
Ponomareva, Vera Portnyagin, Maxim Derkachev, Alexander Juschus, Olaf Garbe-Schönberg, Dieter Nürnberg, Dirk |
spellingShingle |
Ponomareva, Vera Portnyagin, Maxim Derkachev, Alexander Juschus, Olaf Garbe-Schönberg, Dieter Nürnberg, Dirk Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
author_facet |
Ponomareva, Vera Portnyagin, Maxim Derkachev, Alexander Juschus, Olaf Garbe-Schönberg, Dieter Nürnberg, Dirk |
author_sort |
Ponomareva, Vera |
title |
Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
title_short |
Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
title_full |
Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
title_fullStr |
Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
title_full_unstemmed |
Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records |
title_sort |
identification of a widespread kamchatkan tephra: a middle pleistocene tie-point between arctic and pacific paleoclimatic records |
publisher |
AGU (American Geophysical Union) |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/21495/ https://oceanrep.geomar.de/id/eprint/21495/1/grl50645.pdf https://doi.org/10.1002/grl.50645 |
long_lat |
ENVELOPE(166.533,166.533,69.500,69.500) |
geographic |
Arctic Pacific Rauchua |
geographic_facet |
Arctic Pacific Rauchua |
genre |
Arctic Arctic Kamchatka Siberia |
genre_facet |
Arctic Arctic Kamchatka Siberia |
op_relation |
https://oceanrep.geomar.de/id/eprint/21495/1/grl50645.pdf Ponomareva, V., Portnyagin, M. , Derkachev, A., Juschus, O., Garbe-Schönberg, D. and Nürnberg, D. (2013) Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records. Open Access Geophysical Research Letters, 40 . pp. 3538-3543. DOI 10.1002/grl.50645 <https://doi.org/10.1002/grl.50645>. doi:10.1002/grl.50645 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/grl.50645 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
14 |
container_start_page |
3538 |
op_container_end_page |
3543 |
_version_ |
1766300294283526144 |