Tephra layers of in the quaternary deposits of the Sea of Okhotsk: Distribution, composition, age and volcanic sources.

Derkachev, Alexander N., Nikolaeva, Nataliya A., Gorbarenko, Sergey A., Portnyagin, Maxim V., Ponomareva, Vera V., Nürnberg, Dirk, Sakamoto, Tatsuhiko, Iijima, Koiji, Liu, Yanguang, Shi, Xuefa, Lv, Huahua and Wang, Kunshan (2016) Tephra layers of in the quaternary deposits of the Sea of Okhotsk: Distribution, composition, age and volcanic sources. Quaternary International, 425 . pp. 248-272. DOI 10.1016/j.quaint.2016.07.004.

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Supplementary data:

Abstract

The fullest summary on composition, age and distribution of 23 tephra layers detected and investigated in the Okhotsk Sea Pleistocene-Holocene deposits is presented. Seven tephra layers are surely identified with powerful explosive eruptions of volcanoes of Kamchatka, Kurile and Japanese Islands. For them, the areas of ash falls including which weren't revealed earlier on the land are specified and established. It is estimated that explosive eruptions of volcanoes of the Kamchatka Sredinny Range were the sources for three tephra layers. Complex investigations of morphological, mineralogical and chemical composition of tephras including composition of rare and earth-rare elements (electron microprobe analysis and laser ablation method - LA ICP MS) have been made for all studied layers. They were a basis for tephrostratigraphic correlation of the regional deposits promoting to specification of stages of volcanic explosive activity in this region.

Document Type: Article
Keywords: Tephra, Tephrostratigraphy, Quaternary deposits, Sea of Okhotsk, Geochemistry of volcanic glasses
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.quaint.2016.07.004
ISSN: 1040-6182
Projects: KOMEX, KALMAR, Future Ocean
Expeditions/Models/Experiments:
Date Deposited: 14 Oct 2016 10:29
Last Modified: 19 Dec 2017 12:43
URI: http://oceanrep.geomar.de/id/eprint/34343

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