从地震信息看红河—金沙江断裂带构造特征
|
摘要
红河—金沙江断裂带,根据地质结构的差异可分为北段羌塘向北叠瓦逆冲断裂带,中段三江—哀牢山向东叠瓦逆冲断裂带,南段河内—中建正反转走滑断裂带。北段和中段均由三组基本平行的叠瓦逆冲断层构成,显示以强烈挤压为特征,但后者相对较弱;南段则经历了古近纪由挤压反转为拉张,形成一些断陷构造,新近纪又反转为挤压,断陷转变为坳陷,形成河内、莺歌海及中建等坳陷。该南段的主断层为正反转构造逆冲带的前锋太平断裂带,与原先人们所认为的不相同。红河—金沙江断裂带的挤压特征总体上由北往南逐渐减弱,其演化受特提斯构造活动所控制。断裂带的油气勘探成果表明,在喜马拉雅期形成的断坳结构盆地中油气显示较好。
The Red River-Jinshajiang Fault Zone, based on the difference of geologic texture, can be divided into three subzones, including the northern (the Qiantang imbricated-northward fault subzone), the middle (the Hanoi-Zhongjiang normally reversed strike-slip fault subzone) and the southern (the Sanjiang-Ailaoshan imbricated-east-ward fault subzone). The northern and the middle subzones consist respectively of three groups of approximately parallel imbricated faults,which reveals intensively compression. The southern subzone had yielded some faulted depressions that brought from conversing compression into extension during Paleogene and then they conversed into depressions, such as Hanoi, Yingge Sea, Zhongjian and other depressions as a result of reversion into compression during Neogene. The compression of Red River-Jinshajiang Fault Zone exhibits to get weakening generally from south to north under the control of Tethyan tectonic activity. The petroleum exploration in the fault zone have indicated that good oil and gas potential is present in those faulted depressions that formed during Himalayan period.
The Red River-Jinshajiang Fault Zone, based on the difference of geologic texture, can be divided into three subzones, including the northern (the Qiantang imbricated-northward fault subzone), the middle (the Hanoi-Zhongjiang normally reversed strike-slip fault subzone) and the southern (the Sanjiang-Ailaoshan imbricated-east-ward fault subzone). The northern and the middle subzones consist respectively of three groups of approximately parallel imbricated faults,which reveals intensively compression. The southern subzone had yielded some faulted depressions that brought from conversing compression into extension during Paleogene and then they conversed into depressions, such as Hanoi, Yingge Sea, Zhongjian and other depressions as a result of reversion into compression during Neogene. The compression of Red River-Jinshajiang Fault Zone exhibits to get weakening generally from south to north under the control of Tethyan tectonic activity. The petroleum exploration in the fault zone have indicated that good oil and gas potential is present in those faulted depressions that formed during Himalayan period.
引文
[1]金性春.板块构造学基础[M].上海:上海科学技术出版社,1983:240-243.
[2]张启明,张兴泉.一个独特的含油气盆地--莺歌海盆地[J].中国海上油气,1987,1(1):11-21.
[3]茹克.南海北部边缘叠合盆地的发育及其大地构造意义[J].石油与天然气地质,1988:9(1):22-31.
[4]戴福贵,刘宝睿,杨克绳.华北盆地地震剖面地质解释及其构造演化[J].中国地质,2008,35(5):820-840.
[5]龚再生.中国近海大油气田[M].北京:石油工业出版社,1997.
[6]杨克绳.莺歌海盆地几个地质问题的探讨[J].断块油气田,2002,7(2):4-11.
[7]冯建辉,吕延仓,谭试典.中国石油构造样式[M].北京:石油工业出版社,2000.
[8]李国玉,吕鸣岗.中国含油气盆地图集[M].2版.北京:石油工业出版社,2002.
[2]张启明,张兴泉.一个独特的含油气盆地--莺歌海盆地[J].中国海上油气,1987,1(1):11-21.
[3]茹克.南海北部边缘叠合盆地的发育及其大地构造意义[J].石油与天然气地质,1988:9(1):22-31.
[4]戴福贵,刘宝睿,杨克绳.华北盆地地震剖面地质解释及其构造演化[J].中国地质,2008,35(5):820-840.
[5]龚再生.中国近海大油气田[M].北京:石油工业出版社,1997.
[6]杨克绳.莺歌海盆地几个地质问题的探讨[J].断块油气田,2002,7(2):4-11.
[7]冯建辉,吕延仓,谭试典.中国石油构造样式[M].北京:石油工业出版社,2000.
[8]李国玉,吕鸣岗.中国含油气盆地图集[M].2版.北京:石油工业出版社,2002.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心