| 中国西北地区陆内前陆盆地的鉴别标志 |
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| 引用本文： | 陈发景,汪新文.中国西北地区陆内前陆盆地的鉴别标志[J].现代地质,2004,18(2):151-156. |
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| 作者姓名： | 陈发景 汪新文 |
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| 作者单位： | 1. 中国地质大学,能源地质系,北京,100083
2. 中国地质大学,地球科学与资源学院,北京,100083 |
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| 摘 要： | 讨论了中国西北地区陆内前陆盆地的主要鉴别标志 :(1)不对称山前坳陷的构造几何形态 ;(2 )先缓后陡的两段式沉降曲线 ;(3)反沉积旋回上部磨拉石堆积、强烈构造运动和层内递进型构造角度不整合类型。认为在鉴别陆内前陆盆地中必须进行多项标志的综合分析
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| 关 键 词： | 陆内前陆盆地 不对称山前坳陷 反旋回 构造运动 沉降曲线 |
| 文章编号： | 1000-8527(2004)02-0151-06 |
| 修稿时间： | 2004年1月5日 |
IDENTIFIABLE CRETERIA OF INTRACONTINENTAL FORELAND BASINS IN NORTHEASTERN CHINA |
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| CHEN Fa-jing,WANG Xin-wen.IDENTIFIABLE CRETERIA OF INTRACONTINENTAL FORELAND BASINS IN NORTHEASTERN CHINA[J].Geoscience——Journal of Graduate School,China University of Geosciences,2004,18(2):151-156. |
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| Authors: | CHEN Fa-jing WANG Xin-wen |
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| Abstract: | In this paper, identifiable criteria can be summarized as follows: (1) structural geometry of asymmetric mountain front depression, which is typical of the intracontinental for land basins; (2) subsidence curve of the intercontinental foreland basins consists of two sections which are different from extensional fault depressions, the first section is a gentle curve of total subsidence and tectonic subsidence; the second section shows a very steep curve;(3) molasses sediments in the upper part of reverse sedimentary cycle and offlap, intense tectonic movement and intraformational progressive tectonic angular unconformity.It is concluded that comprehensive analysis of multiple criteria for identifying intercontinental foreland is very necessary. |
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| Keywords: | intracontinental foreland basin asymmetrical mountain front depression reverse cycle tectonic movement subsidence curve |
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