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DOI | 10.1016/j.jseaes.2019.01.025 |
Late Glacial to Holocene volcanism of Jom-Bolok Valley (East Sayan Mountains, Siberia) recorded by microtephra layers of the Lake Kaskadnoe-1 sediments | |
Shchetnikov, Alexander A.1,2,3; Bezrukova, Elena V.3,4,5; Krivonogov, Sergey K.6,7 | |
发表日期 | 2019 |
ISSN | 1367-9120 |
EISSN | 1878-5786 |
卷号 | 173页码:291-303 |
英文摘要 | This article presents first tephrochronological data on the volcanic activity in the valley of the Jom-Bolok River (East Sayan Mountains, Siberia), which is the largest manifestation of the Holocene eruptions in Central Asia. The data results from our study of the proglacial Kaskadnoe-1 Lake situated near the Jom-Bolok basalt field. The lake sediments include a series of tephra-rich layers. Radiocarbon dating of the lake sediments provided a robust age model which allowed us to build timing of eruptions formed the Jom-Bolok volcanic field. We recognize two large phases of volcanism separated by almost 5 thousand years dormant phase. The first phase is traced back to ca. 14.3 cal ka BP and lasted until 6.3 cal ka BP. Ten clusters of microtephra layers in the sediments of the first phase show 300-800 years recurrence of the volcanic events weakening upward. The event of 14.3-13.3 cal ka BP probably represents the strongest eruptions of the Jom-Bolok. The second phase started ca. 1.6 cal ka BP and highly likely continues in our days. Its strongest eruptions occurred between 1.6 and 0.8 cal ka BP with periodicity of 200 years. This tephrostratigraphy shows a multiplicity of the Jom-Bolok volcanic events and amplifies the earlier built scheme resulted from investigations of the stratified basalts, pyroclasts and lake damming events. Additionally, we indicate a possible influence of the Jom-Bolok volcanic activity on the regional and global climatic changes. |
WOS研究方向 | Geology |
来源期刊 | JOURNAL OF ASIAN EARTH SCIENCES |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/96455 |
作者单位 | 1.RAS, SB, Inst Earths Crust, Irkutsk, Russia; 2.Irkutsk State Univ, Irkutsk, Russia; 3.RAS, SB, Irkutsk Sci Ctr, Irkutsk, Russia; 4.RAS, SB, Inst Geochem, Irkutsk, Russia; 5.Tyumen Ind Univ, Tyumen, Russia; 6.RAS, SB, Inst Geol & Mineral, Irkutsk, Russia; 7.Novosibirsk State Univ, Novosibirsk, Russia |
推荐引用方式 GB/T 7714 | Shchetnikov, Alexander A.,Bezrukova, Elena V.,Krivonogov, Sergey K.. Late Glacial to Holocene volcanism of Jom-Bolok Valley (East Sayan Mountains, Siberia) recorded by microtephra layers of the Lake Kaskadnoe-1 sediments[J],2019,173:291-303. |
APA | Shchetnikov, Alexander A.,Bezrukova, Elena V.,&Krivonogov, Sergey K..(2019).Late Glacial to Holocene volcanism of Jom-Bolok Valley (East Sayan Mountains, Siberia) recorded by microtephra layers of the Lake Kaskadnoe-1 sediments.JOURNAL OF ASIAN EARTH SCIENCES,173,291-303. |
MLA | Shchetnikov, Alexander A.,et al."Late Glacial to Holocene volcanism of Jom-Bolok Valley (East Sayan Mountains, Siberia) recorded by microtephra layers of the Lake Kaskadnoe-1 sediments".JOURNAL OF ASIAN EARTH SCIENCES 173(2019):291-303. |
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