50-9 Ka时类似obb源的火山喷发对蒙古塔里雅特盆地潜在地震构造的示踪

IF 0.8 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Italian Journal of Engineering Geology and Environment Pub Date : 2022-01-01 DOI:10.26516/2541-9641.2022.4.80

I. Chuvashova, S. Rasskazov, T. Yasnygina

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引用次数: 0

摘要

描述了在塔里亚特盆地爆发的蒙古中部最年轻的火山。建立了Odnobokiy火山、Listvennichny火山和Sosnovy火山(年龄约50 Ka)的东西线被horgo火山(年龄约9 Ka)的东北走向的一个建筑物所改变。这种变化被认为是丘鲁廷地区地震活跃结构的原型。从火山岩的地球化学资料来看，火山喷发来自于一个类似obb的均匀源，从1.2 Ma以前开始，在Taryat-Chulutyn火山场中间歇性地重新激活。这种类型的源不同于壳幔过渡区的源，其特征是组分具有明显的时空变异性。

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Tracing of a Potential Seismic Structure in the Taryat Basin of Central Mongolia by Volcanic Eruptions from an OIB-like Source at 50–9 Ka

The youngest volcanoes of Central Mongolia that erupted in the Taryat basin are described. Change of the west-east line of the Odnobokiy, Listvennichny, and Sosnovy volcanoes (age about 50 Ka) by the one of edifices of the northeastern strike of the Khorgo volcano (age about 9 Ka) is established. This change is considered as a prototype of a seismically active structure in the Chulutyn zone. From geochemical data on volcanic rocks, volcanic eruptions are argued to be from a homogeneous OIB-like source that episodically reactivated in the Taryat-Chulutyn volcanic field starting from 1.2 Ma ago. Sources of this type differ from those of the crust-mantle transition region, which are characterized by a significant spatial-temporal variability of components.

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来源期刊

Italian Journal of Engineering Geology and Environment GEOSCIENCES, MULTIDISCIPLINARY-

CiteScore

1.30

自引率

8.30%

发文量

期刊介绍： Italian Journal of Engineering Geology and Environment (IJEGE), published by Sapienza Università Editrice university press, is the open access Journal of the Research Center CERI on "Prediction, Prevention ad Control of Geological Risks" of Sapienza University of Rome. The Journal publishes original papers concerning the numerous topics of environmental risks such as seismic risk, landslide risk, hydraulic and flood risk, groundwater resource management, soil and groundwater contamination, reclamation of contaminated land, applied geophysics, economic geology, land use, soil and rock characterization. IJEGE is the Journal of the Italian Association of Engineering Geology and Environment (AIGA). The Journal is published under the auspices of the International Association for Engineering Geology and the Environment (IAEG) - Italian Group.