东胜煤田锡尼布拉格勘查区侏罗-白垩系
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摘要
锡尼布拉格普查区位于东胜煤田西北部,由于地处鄂尔多斯北缘,区内侏罗-白垩系发育与盆地内部稍有差异。通过对地表露头追踪、岩性特征、测井曲线和地震时间剖面详细的研究,划分了岩石地层单位,根据本次及以往采集的植物化石确定了生物地层,并与鄂尔多斯盆地内的标准剖面进行了对比,地层自下而上发育有侏罗系中统延安组(J2ya)、直罗组(J2z)、安定组(J2a),白垩系下统志丹群宜君组(K1y)、洛河组(K1l)、环河组(K1h)、罗汉洞组(K1lh),下伏地层层为三叠系上统延长组,上覆地层为第四系上更新统,其中含煤地层延安组呈现"下缺上剥",含2-6煤组,缺失底部的1煤组和顶部的7煤组。
The Xini Burak prospecting area is situated in the northwestern Dongsheng coalfield,north margin of the Ordos Basin,thus the development of the Jurassic-Cretaceous strata there has slight differences with strata in the basin interior.Through surface tracing of outcrops and detailed study of lithologic features,logging traces and seismic time sections,have divided the rock-stratigraphic units;based on plant fossils collected in this study and previously determined the biostratigraphic units;then correlated with the standard section of the basin interior.From bottom to top,strata units have middle Jurassic Yanan(J2ya),Zhiluo(J2z),Anding(J2a) formations,and lower Cretaceous Zhidan Group Yijun(K1y),Luohe(K1l),Huanhe(K1h),Luohandong(K1lh) formations;underlying is upper Triassic Yanchang Formation and overlying is Quaternary upper Pleistocene Series.In which,the Yanan Formation presents a geological phenomenon of "hiatus bottom and denuded top",contains 2~6 coal groups,but bottom part Group I and top part Group VII are missing.
The Xini Burak prospecting area is situated in the northwestern Dongsheng coalfield,north margin of the Ordos Basin,thus the development of the Jurassic-Cretaceous strata there has slight differences with strata in the basin interior.Through surface tracing of outcrops and detailed study of lithologic features,logging traces and seismic time sections,have divided the rock-stratigraphic units;based on plant fossils collected in this study and previously determined the biostratigraphic units;then correlated with the standard section of the basin interior.From bottom to top,strata units have middle Jurassic Yanan(J2ya),Zhiluo(J2z),Anding(J2a) formations,and lower Cretaceous Zhidan Group Yijun(K1y),Luohe(K1l),Huanhe(K1h),Luohandong(K1lh) formations;underlying is upper Triassic Yanchang Formation and overlying is Quaternary upper Pleistocene Series.In which,the Yanan Formation presents a geological phenomenon of "hiatus bottom and denuded top",contains 2~6 coal groups,but bottom part Group I and top part Group VII are missing.
引文
[1]内蒙古煤田地质局117勘探队.内蒙古自治区东胜煤田塔然高勒北部矿区煤炭勘探报告[R].内蒙鄂尔多斯:内蒙古煤田地质局117勘探队,2008.
[2]石彦强.内蒙古自治区东胜煤田锡尼布拉格勘查区煤炭普查报告[R].北京:中煤地质工程总公司,2011.
[3]中国煤田地质总局.鄂尔多斯盆地聚煤规律及煤炭资源评价[M].北京:煤炭工业出版社,1996.
[4]《中国地层典》编委会.郝诒纯,等.中国地层典:白垩系[M].北京:地质出版社,2000.
[5]《中国地层典》编委会.王思恩,等.中国地层典:侏罗系[M].北京:地质出版社,2000.
[6]《中国地层典》编委会.杨遵仪,等.中国地层典:三叠系[M].北京:地质出版社,2000.
[7]全国地层委员会编.中国地层指南及中国地层指南说明书-修订版[M].北京:地质出版社,2001.
[8]石彦强,等.东胜煤田锡尼布拉格勘查区煤层对比[J].中国煤炭地质,2012,24(8):16-22.
[9]纪友亮.层序地层学[M].上海:同济大学出版社,2005.
[10]黄晓丽,梁官考,马飞宙,等.东胜煤田北部延安组沉积体系及聚煤特征[J].中国煤炭地质,2011,23(7).
[2]石彦强.内蒙古自治区东胜煤田锡尼布拉格勘查区煤炭普查报告[R].北京:中煤地质工程总公司,2011.
[3]中国煤田地质总局.鄂尔多斯盆地聚煤规律及煤炭资源评价[M].北京:煤炭工业出版社,1996.
[4]《中国地层典》编委会.郝诒纯,等.中国地层典:白垩系[M].北京:地质出版社,2000.
[5]《中国地层典》编委会.王思恩,等.中国地层典:侏罗系[M].北京:地质出版社,2000.
[6]《中国地层典》编委会.杨遵仪,等.中国地层典:三叠系[M].北京:地质出版社,2000.
[7]全国地层委员会编.中国地层指南及中国地层指南说明书-修订版[M].北京:地质出版社,2001.
[8]石彦强,等.东胜煤田锡尼布拉格勘查区煤层对比[J].中国煤炭地质,2012,24(8):16-22.
[9]纪友亮.层序地层学[M].上海:同济大学出版社,2005.
[10]黄晓丽,梁官考,马飞宙,等.东胜煤田北部延安组沉积体系及聚煤特征[J].中国煤炭地质,2011,23(7).
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