新疆石油地质 ›› 2004, Vol. 25 ›› Issue (1): 90-94.

• 综述 • 上一篇    下一篇

论中地壳及其地质意义

张景廉, 于均民   

  1. 中国石油石油勘探开发科学研究院西北分院,甘肃兰州730020
  • 收稿日期:2003-07-14 出版日期:2004-02-01 发布日期:2020-08-06
  • 作者简介:张景廉(1941-),男,江苏常熟人,研究员,石油地质。联系电话:0931-86863601)刘国栋,赵国泽.华北地区壳内高导层和壳内低速层,1982.

Discussion on the Mid-Crust and Its Geological Implication

ZHANG Jing-lian, YU Jun-min   

  1. 1. Northwest Sub-Institute, Research Institute of Petroleum Exploration and Development, Lanzhou, Gansu 730020, China
  • Received:2003-07-14 Online:2004-02-01 Published:2020-08-06

摘要: 地壳深 部结构开始引起重视。中地壳与油气、金属矿床、地震之间的关系特别受到关注。地震低速、高导低阻、低密度是中地壳的主要地球物理特征。研究表明:当中地壳地震波速v,<6.0km/s,密度ρ<2.75g/cm3时,有油气生成及油气藏;而当中地壳地震波速0>6.0km/s,密度ρ>2.75g/cm3时,则有金属Fe、Cu、Ni、Au等成矿。深入研究中地壳的地球物理体的地质属性对油气、金属成矿、地震等的预测有重大意义,特别对大型、超大型油气田、金属矿床的勘探有重要意义。

关键词: 中部, 地壳, 低速带, 高导层, 石油, 天然气, 金属, 矿床, 地震

Abstract: The deep structure of the earth crust is a topic focus. The relation among petroleum, metal deposit, earthquake and mid-crust is con-cerned. Low seismic velocity, high conductivity (low resistance), low density are the important geophysical features of the mid-crust. The investi-gation shows that when the seismic velocity of the mid-crust Pp<6.0 km/s, p<2.75 g/ cm', there exist hydrocarbon generation and oil-gas reser-voirs; when Vvp>6.0 km/s, p>2.75 g/cm', there exist Fe, Cu, Ni, Au and other metal deposits. To study the geological features of the mid-crust isof significance for exploration of oil-gas and metal deposits, particularly, for big and giant oil-gas fields and metal deposits, and for prediction ofthe earthquakes as well.

Key words: midcrust, low velocity belt, high conductive layer, crude oil, natural gas, metal, deposit, earthquake

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