Pb-isotope age estimats of model sources for late cenosozoic basalts from the Changbaishan (Pectusan) field and its significance for the general pb-isotope systematics of Сentral Asia.

IF 0.8 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Italian Journal of Engineering Geology and Environment Pub Date : 2023-01-01 DOI:10.26516/2541-9641.2023.2.75

T.A. Yasnygina, S.V. Rasskazov

引用次数: 0

Abstract

From the 207Pb/204Pb – 206Pb/204Pb diagram, sources of Late Cenozoic basalts from the Changbaishan field, located on the Northeast China – North Korea border, are characterized by two age intervals: Late Archean (3.0–2.8 Ga) and Early Proterozoic (2.2–1.9 Ga). The latter interval coincides with the age estimates of the component of subducted sediments involved in their genesis and its upper boundary coincides with the Pb isotope age of the source of Pleistocene volcanic rocks in Northeast China.

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长白山(Pectusan)地区晚新生代玄武岩模式源pb同位素年龄估算及其对Сentral亚洲pb同位素总体系统的意义

根据207Pb/204Pb - 206Pb/204Pb图，长白山地区晚新生代玄武岩的物源划分为晚太古代(3.0 ~ 2.8 Ga)和早元古代(2.2 ~ 1.9 Ga)两个年龄区间。后者与参与其成因的俯冲沉积物组分年龄估计一致，其上界与东北更新世火山岩源区Pb同位素年龄一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.