孔雀河斜坡东南部中上奥陶统物源研究新认识
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摘要
通过对塔里木盆地孔雀河斜坡东南部地区中晚奥陶系砂岩中重矿物分析研究,表明库鲁克塔格露头样品稳定重矿物为锆石-电气石-石榴石-磁铁矿-赤褐铁矿组合,孔雀1井样品稳定重矿物为锆石-石榴石-电气石-白钛石组合,二者有些差异,但分析结果反映了同样的母岩性质。研究区内沉积岩母岩主要来自于酸性、中基性岩浆岩和部分变质岩,为混源产物。结合对地震剖面的分析,认为研究区物源来自南(阿尔金造山带)和北(库鲁克塔格隆起)两部。根据稳定重矿物ZTR指数判断,南、北两个方向而来的沉积物在孔雀1井附近交汇,并沿各自路线运移、沉积。
The analysis and research of heavy mineral of the sandstone in southeastern of the Kongque River slopes of the Tarim basin in the Middle-Late Ordovician show that the stable heavy mineral composition of Kuruktag Outcrop samples is Zircon-Tourmaline-Garnet-Magnetite-Chek limonite. The stable heavy mineral composition of the well Kongque 1 is Zircon-Garnet-Tourmaline-Leucoxene. There are some differences between the two compositions, but the analytical results reflect the same characteristics of source rocks. The source rocks in the study area are mainly from acid, intermediate-basic igneous rocks and some metamorphic rocks. They are mixed products. Through the analysis of the Seismic profiles, this paper hold the opinion that the sediment source of the study area comes from the south (Altun Orogen) and the north (Kuruktag uplift). According to the "ZRT' index of the stable heavy mineral, the sediments proved coming from south and north met in area around the well Kongque 1, then migrated and deposited along their own way.
The analysis and research of heavy mineral of the sandstone in southeastern of the Kongque River slopes of the Tarim basin in the Middle-Late Ordovician show that the stable heavy mineral composition of Kuruktag Outcrop samples is Zircon-Tourmaline-Garnet-Magnetite-Chek limonite. The stable heavy mineral composition of the well Kongque 1 is Zircon-Garnet-Tourmaline-Leucoxene. There are some differences between the two compositions, but the analytical results reflect the same characteristics of source rocks. The source rocks in the study area are mainly from acid, intermediate-basic igneous rocks and some metamorphic rocks. They are mixed products. Through the analysis of the Seismic profiles, this paper hold the opinion that the sediment source of the study area comes from the south (Altun Orogen) and the north (Kuruktag uplift). According to the "ZRT' index of the stable heavy mineral, the sediments proved coming from south and north met in area around the well Kongque 1, then migrated and deposited along their own way.
引文
1中石化石油勘探开发研究院西部分院,张克银.孔雀河斜坡重矿物特征分析及地质意义(西部研究动态).2003。
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CHEN Chunfang,ZHENG Junmao,WANG Defa.Depositional systems and source provenance of thethird member of Shahejie Formation in Banqiao Sag[J].Journal of Palaeogeography,2001,3(1):55-62.
LI Zhen,JOAO Yangquan,LIU Chunhua,et al.Provenance analysis of heavy mineral in Gaoliu area ofHuanghua Depression[J].Petroleum Exploration andDevelopment,1998,25(6):5-7.
YANG Jianping,CAO Yingchang.Shan sand body in theeogene Shahejie formation in Huimin depression[J].Journal of the University of Petroleum,China,1999,23(4):9-12.
ZHAO Chenglin,ZHU Xiaomin.Sedimentary Petrology[M].Petroleum Industry Press,Beijing,2001.
纪友亮,彭传圣,张立强.新疆库鲁克塔格地区奥陶纪岩相古地理[J].古地理学报,2002,4(1):43-53.
宋春晖,孙淑荣.酒西盆地晚新生代沉积物重矿物分析与高原北部隆升[J].沉积学报,2002,20(4):95-98.
王洪伟,杨建国,林东成.汤原断陷古近纪砂岩重矿物组合与物源分析[J].大庆石油地质与开发,2007,26(3):39-42,46.
赵红格,刘池洋.物源分析方法及研究进展[J].沉积学报2003,21(3):409-415.
姚爱民.宁夏呼鲁斯太矿区5#煤层粘土岩夹矸的研究[J].西北地质,2003,36(1):78-83.
何钟铧,刘招君,张峰.重矿物分析在盆地中的应用研究进展[J].地报科技情报,2001,20(4):29-32.
陈纯芳,郑浚茂,王德发.板桥凹陷沙三段沉积体系与物源分析[J].古地理学报,2001,3(1):55-62.
李珍,焦养泉,刘春华,等.黄骅坳陷高柳地区重矿物物源分析[J].石油勘探与开发,1998,25(6):5-7.
杨剑萍,操应长.惠民凹陷下第三系沙河街组基山砂体成因及石油地质意义[J].石油大学学报(自然科学版),1999,23(4):9-12.
赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001.
JI Youliang,PENG Chuansheng,ZHANG Liqiang.Lithofacies palaeogeography of the Ordovician inkuruketage region of Xinjiang[J].Journal ofPalaeogeography,2002,4(1):43-53.
SONG Chunhui,SUN Shurong.Analysis of Tectonic Upliftand Heavy Minerals of Sediments on Jiuxi Basin in theNorthern Margin of Tibetan Plateau since the LateCenozoic[J].Acta Sedimentologica Sinica,2002,20(4):95-98.
WANG Hongwei,YANG Jianguo,LIN Dongcheng,Combination of paleogene sandstone heavy mineral andsource analysis in Tangyuan Rift[J].PetroleumGeology&Oilfield Development in Daqing,2007,26(3):39-42,46.
ZHAO Hongge,LIU Chiyang.Approaches and Prospects ofProvenance Analysis[J].Acta Sedimentologica Sinica,2003,21(3):409-415.
Andrew C C R H.Processes controlling the composition ofheavy mineral assemblages in sandstones[J].Sedimentary Geology,1999,124(4):3-29.
Hilmar V E,Reinhard G.Provenance of Cretaceoussynorogenic sandstones in the Eastern Alps:constraints from framework petrography heavy mineralanalysis and mineral chemistry[J].SedimentaryGeology,1999,124(4):82-110.
YAO Aimin.Study on gangue of tonstein within No.5coal-bed in Hulstai coal district,Ningxia[J].NorthwesternGeology,2003,36(1):78-83.
HE Zhonghua,LIU Zhaojun,ZHANG Feng.Latestprogress of heavy mineral research in the basin analysis[J].Geological Science and Technology Information,2001,20(4):29-32.
CHEN Chunfang,ZHENG Junmao,WANG Defa.Depositional systems and source provenance of thethird member of Shahejie Formation in Banqiao Sag[J].Journal of Palaeogeography,2001,3(1):55-62.
LI Zhen,JOAO Yangquan,LIU Chunhua,et al.Provenance analysis of heavy mineral in Gaoliu area ofHuanghua Depression[J].Petroleum Exploration andDevelopment,1998,25(6):5-7.
YANG Jianping,CAO Yingchang.Shan sand body in theeogene Shahejie formation in Huimin depression[J].Journal of the University of Petroleum,China,1999,23(4):9-12.
ZHAO Chenglin,ZHU Xiaomin.Sedimentary Petrology[M].Petroleum Industry Press,Beijing,2001.
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