TO STUDY THE DISTRIBUTION OF ORE CLUSTERS OF THE AMUR RIVER REGION MINEROGENIC PROVINCES WITH THE DEEP STRUCTURE FEATURES OF THE UPPER CRUST ON THE EAST-STANOVOY FRAGMENT OF THE REFERENCE GEOLOGICAL AND GEOPHYSICAL PROFILE 8-DV

Q4 Earth and Planetary Sciences
V. Solovyev, A. Salnikov, V. Seleznev, T. V. Kashubina, N. Galyova
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引用次数: 0

Abstract

The results of deep seismic studies based on P- and S-wave data on the East-Stanov fragment of the reference 700-kilometer geophysical profile 8-DV are presented. Deep seismic sections of the upper crust (up to depths of 20 km) with velocity distribution of longitudinal and transverse waves are constructed. The velocity of P-waves in the upper part of the section varies from 4-5 km/s within the Upper Zeya and Amur-Zeya plains to 5.5-6.0 km/s within mountain ranges and plateaus. According to S-waves in the upper part of the section, the velocity values are generally 3.0-3.2 km/s; reduced velocity values of 2.5-2.6 km/s are noted in the Upper Zeya Plain section. The inhomogeneous structure of the upper part of the Earth’s crust to depths of 15-20 km has been established by the ratio of the velocities of P- and S-waves and the Poisson’s ratio. In the section of the profile, an analysis was made of the relationship between the identified anomalies and the location of large mineragenic zones of the Amur region. The correlations previously identified on the profiles 2-DV, 3-DV and 1-SB on the occurrence of a number of ore deposits in the zones of reduced ratios of P- and S-wave velocities and Poisson’s ratio in the upper part of the Earth’s crust have been confirmed. The connection of the identified surface seismic anomalies with deep roots (at depths of 5-20 km), which can be considered ore-bearing, is substantiated.
从参考地质地球物理剖面8-DV的EAST-STANOVOY断块上地壳深部构造特征研究阿姆河成矿区矿簇的分布
本文介绍了参考地球物理剖面8-DV的700公里东斯坦诺夫断裂带纵波和横波资料的深部地震研究结果。构造了纵波和横波速度分布的上地壳深部地震剖面(深度达20 km)。剖面上部纵波速度在上泽雅平原和阿穆尔泽雅平原范围内为4 ~ 5 km/s,在山脉和高原范围内为5.5 ~ 6.0 km/s。根据剖面上部s波,速度值一般为3.0 ~ 3.2 km/s;泽雅平原上剖面的速度值减小了2.5 ~ 2.6 km/s。利用纵、横波速度之比和泊松比,确定了地壳上部至15 ~ 20 km深度的非均质结构。在剖面剖面部分,分析了已识别的异常与阿穆尔河地区大型成矿带位置之间的关系。先前在地壳上部横波速度比和泊松比降低带的2-DV、3-DV和1-SB剖面上确定的若干矿床产状的相关性得到了证实。已识别的地表地震异常与深部(深度5 ~ 20 km)可考虑含矿的联系得到证实。
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
Geology and Mineral Resources of Siberia
Geology and Mineral Resources of Siberia Earth and Planetary Sciences-Geology
CiteScore
0.30
自引率
0.00%
发文量
23
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