Seismites from Bayan Obo Group in the Bainaimiao Area of Inner Mongolia
and Their Tectonic Implications

Abstract

Abstract:

The MiddleUpper Proterozoic Bayan Obo Group is located at the northern margin of the North China Craton, and was deposited under intraplate tectonic setting of extension in MiddleLate Proterozoic. From the Halahuogete Formation of Bayan Obo Group in the Bainaimiao area of Inner Mongolia, the authors discovered a set of structures resulted from softsediment deformation for the first time. They occur within the crystalline limestone at the lower section of this group, and include remobilisation breccias, synsedimentary folds, faultgrading, molar tooth and so on. These characteristics demonstrate they belong to the seismites. According to further comparisons between the Bayan Obo Group and the contemporary Sailinhudong Group nearby, we found they exhibit similar features of softsediment deformation as well as the same age of formation. This discovery of the seismites from Bayan Obo Group indicates the northern margin of the North China Craton was undergoing a rapid and intense extension and divergence in MiddleLate Proterozoic, which provides fundamental observations for further studies on tectonic evolution of the North China Craton.

Key words: Bayan Obo Group, softsediment deformation, seismite, Inner Mongolia

JIAO De-Yang-1, CUI Xiao-Huan- 1, SU Hong-Wei-2. Seismites from Bayan Obo Group in the Bainaimiao Area of Inner Mongolia
and Their Tectonic Implications[J]. Geoscience, 2011, 25(3): 503-509.

References

［2］梁定益，聂泽同，宋智敏，等.正在萌芽段的震积地层学 \
[J\].高校地质学报，1997，2(4)：458-462.
［3］梁定益，宋志敏，赵崇贺，等.河北省白石山中元古代地震遗迹的发现 \
[J\].地质通报，2002，21(10)：625-631.
［4］孙晓猛，梁定益，聂泽同.大陆边缘震积岩序列——以金沙江中段震积岩为例 \
[J\].现代地质，1995，9(3)：271-278.
［5］乔秀夫.中朝板块元古宙板内地震带与盆地格局 \
[J\].地学前缘，2002，9(3)：146-156.
［6］黄清华，陈春瑞，李星军.松辽盆地中生代地质事件节律与油气 \
[J\].大庆石油地质与开发，1998，17(6)：5-7.
［7］乔秀夫，李海兵，高林志.华北地台震旦纪─早古生代地震节律 \
[J\].地学前缘，1997，4(3/4)：155-160.
［8］南陵，崔久之.地震混杂岩(震积岩)的沉积特征和识别\
[J\]. 地震地质译丛，1996，18(6)：23-31.
［9］马杏垣.论伸展构造\
[J\].地球科学——武汉地质学院学报，1982，7(3)：18-32.
［10］周志广，梁定益，刘文灿，等.藏南晚白垩世宗卓组巨型混杂堆积的特征及其地裂——地震成因论证 \
[J\].地质论评，2006， 52(3)：314-320.
［11］邵济安.中朝板块北缘中段地壳演化 \
[M\].北京：北京大学出版社，1991：1-136.
［12］王萍，邱维理，张斌.川西杂谷脑“冰碛物”中软沉积变形构造成因 \
[J\].第四纪研究，2009，29(3)：484-493.
［14］钟华明，夏军，童劲松，等.洛扎县幅地质调查新成果及主要进展 \
[J\].地质通报，2004，23(5/6)：451-457.
［15］杜远生，韩欣.论震积作用和震积岩 \
[J\].地球科学进展，2000，15(4)：389-394.
［17］岳信东，林春明，李艳丽，等.二连盆地白音查干凹陷下白垩统震积岩的发现及其地质意义 \
[J\].高校地质学报，2009， 15(1)：57-62.
［19］李元昊，刘池洋，王秀娟，等.鄂尔多斯盆地三叠系延长组砂岩墙(脉)特征及其地质意义 \
[J\].中国地质，2007，34(3)：400-405.
［20］谭励可，石铁铮.内蒙古商都白云鄂博群小壳化石的发现及其意义 \
[J\].地质论评，2000，46(6)：573-583.
［21］刘正宏，刘雅琴，冯本智.华北板块北缘中元古代造山带的确立及其构造演化 \
[J\].长春科技大学学报，2000，20(2)：110-114.
［22］邵济安，张履桥，李大明.华北克拉通元古代的三次伸展事件 \
[J\].岩石学报，2002，18(2)：152-160.
［23］周建波，郑永飞，杨晓勇，等.白云鄂博地区构造格局与古板块构造演化 \
[J\].高校地质学报，2002，8(1)：46-61.
［24］乔秀夫，高林志，彭阳.内蒙古腮林忽洞群综合地层和白云鄂博矿床赋矿微晶丘 \
[J\].地质学报，1997，71(3)：202-211.
［25］内蒙古自治区地质矿产局.内蒙古自治区岩石地层 \
[M\].武汉: 中国地质大学出版社，2009：1-344.
［26］吕洪波，章雨旭，肖国望，等.内蒙古白云鄂博南东黑脑包腮林忽洞群下部发现地震滑塌岩块 \
[J\].地质论评，2006，52(2)：163-169.
［30］胡鸿飞，戴霜，唐玉虎，等.华北板块北缘西段裂谷系金矿床成矿特征及成因探讨 \
[J\].地质与勘探，2008，44(1)：9-14.
［31］吴泰然，刘树文，张臣.华北地台北缘中段中新元古代地块的PTt轨迹及构造演化研究 \
[J\].地球科学——中国地质大学学报，1998，23(5)：487-492.
［32］张臣.华北克拉通北缘中段中新元古代热—构造事件及其演化 \
[J\].北京大学学报:自然科学版，2004，40(2)：232-240.

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