地质科技情报2017，Vol.36Issue(2)：128-132,150,6.DOI:10.19509/j.cnki.dzkq.2017.0216
北极阿拉斯加北坡盆地挤压正断层特征及其发育演化模式
Compressional Normal Faults and Its Development and Evolution Mechanism, North Slope Basin, Alaska, Arctic
尹新义 1石砚斌 2卢景美 1方勇1
作者信息
- 1. 中海油研究总院,北京100028
- 2. 防灾科技学院,河北廊坊101601
- 折叠
摘要
Abstract
North Slope Basin is an important petroliferous basin in Alaska,Arctic.The Basin has been in compressing stage since the Early Cretaceous,but lots of normal faults have been identified in the northwest of Chukchi Sea,North Slope Basin.The faults can be further subdivided into three groups in two phases,EW and NNE/NNW trending.The slabby faults plan is high-angle faults in cross section,with small fault throw.Normal faults are mainly distributed in the paleohigh and the adjacent areas.Some faults are in "jagged" distribution in plane,as result of part of NNE/NNW trending faults connecting directly.The fault development is mainly controlled by two compressive events in mutually perpendicular directions.Early Cretaceous,NNE/NNW trending shear joint fissures were formed firstly by the NorthSouth compression,and then formed the EW trending faults.Late Cretaceous,NNE/NNW trending faults were formed along the earlier NNE/NNW trending joint fissures by the East-West compression,and also some faults were "jagged" because of earlier NNE/NNW trending joint fissures.关键词
北极/北坡盆地/挤压正断层/形成机制Key words
Arctic/North Slope Basin/compressional normal fault/formation mechanism分类
天文与地球科学引用本文复制引用
尹新义,石砚斌,卢景美,方勇..北极阿拉斯加北坡盆地挤压正断层特征及其发育演化模式[J].地质科技情报,2017,36(2):128-132,150,6.
