DOI: 10.1002/grl.50645
论文题名: Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records
作者: Ponomareva V. ; Portnyagin M. ; Derkachev A. ; Juschus O. ; Garbe-Schönberg D. ; Nürnberg D.
刊名: Geophysical Research Letters
ISSN: 0094-8765
EISSN: 1944-8496
出版年: 2013
卷: 40, 期: 14 起始页码: 3538
结束页码: 3543
语种: 英语
英文关键词: Arctic
; explosive eruption
; Kamchatka
; Pacific
; tephra
Scopus关键词: Arctic
; Explosive eruption
; Kamchatka
; Pacific
; tephra
; Isotopes
; Deposits
; chemical composition
; climate change
; dating method
; environmental change
; explosive
; global warming
; identification method
; oxygen isotope
; paleoclimate
; Pleistocene
; Quaternary
; spatial distribution
; tephrochronology
; Arctic Ocean
; Kamchatka
; Pacific Ocean
; Russian Federation
英文摘要: 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. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880244649&doi=10.1002%2fgrl.50645&partnerID=40&md5=356e789705275fc167d5ba06babcd88e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6029
Appears in Collections: 气候减缓与适应
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作者单位: Institute of Volcanology and Seismology, Piip Blvd. 9, Petropavlovsk-Kamchatsky 683006, Russian Federation
Recommended Citation:
Ponomareva V.,Portnyagin M.,Derkachev A.,et al. Identification of a widespread Kamchatkan tephra: A middle Pleistocene tie-point between Arctic and Pacific paleoclimatic records[J]. Geophysical Research Letters,2013-01-01,40(14).