哈山及周缘二叠系风城组沉积环境及沉积相发育特征
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摘要
利用岩心观察、薄片鉴定、测井识别、阴极发光等手段,确定了哈山及周缘地区二叠系风城组发育陆源碎屑岩、含灰质碎屑岩、岩盐、云质岩等。在此基础上,利用碳氧同位素、烃源岩地球化学特征、X衍射分析确定了风城组沉积时处于咸化的沉积背景下。同时,根据研究区内岩心的沉积构造等相标志特征分析,识别出风城组发育辫状河三角洲和碱性盐湖两大沉积相,且风城组从一段到三段整体反映了研究区湖水逐渐扩大再逐渐缩小的过程。
According to core observation,slice identification,logging recognition,and cathodoluminescence images,terrigenous clastic rocks,tuffaceous clastic rock,rock salt and dolomite were developed in Permian Fengcheng formation of Hashan and its adjacent areas. Besides,it's confirmed that the Fengcheng formation was deposited in the background of the salty while analyzing the carbon and oxygen isotopes,geochemical characteristics of source rocks and mineral X-ray diffraction. On the basis of the analysis of logging data,core observation,slice identification and sedimentary structure,braided river delta and alkaline Saline Lake sedimentary systems were developed during the period of Fengcheng Formation,and the extent of the lake was gradually expanding and then shrinking from the first member to the last member of Fengcheng Formation.
According to core observation,slice identification,logging recognition,and cathodoluminescence images,terrigenous clastic rocks,tuffaceous clastic rock,rock salt and dolomite were developed in Permian Fengcheng formation of Hashan and its adjacent areas. Besides,it's confirmed that the Fengcheng formation was deposited in the background of the salty while analyzing the carbon and oxygen isotopes,geochemical characteristics of source rocks and mineral X-ray diffraction. On the basis of the analysis of logging data,core observation,slice identification and sedimentary structure,braided river delta and alkaline Saline Lake sedimentary systems were developed during the period of Fengcheng Formation,and the extent of the lake was gradually expanding and then shrinking from the first member to the last member of Fengcheng Formation.
引文
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[20]赵振宇,周瑶琪,马晓鸣,等.水下收缩裂隙形成过程及裂缝充填模式研究[J].地学前缘,2007,14(4):215-221.
[2]杨勇,查明.准噶尔盆地乌尔禾—夏子街地区不整合发育特征及其在油气成藏中的作用[J].石油勘探与开发,2007,34(3):304-309.
[3]张善文.准噶尔盆地哈拉阿拉特山地区风城组烃源岩的发现及石油地质意义[J].石油与天然气地质,2013,34(2):145-152.
[4]张义杰.准噶尔盆地晚石炭世和二叠纪沉积环境[J].新疆石油地质,2007,28(6):673-675.
[5]冯建伟,戴俊生,鄢继华,等.准噶尔盆地乌夏前陆冲断带构造活动-沉积响应[J].沉积学报,2009,27(3):494-502.
[6]蔚远江,何等发,雷振宇,等.准噶尔盆地西北缘前陆冲断带二叠纪逆冲断裂活动的沉积响应[J].地质学报,2004,78(5):612-624.
[7]孙玉善.中国西部地区首先发现硅硼钠石[J].石油与天然气地质,1994,15(3):264-265.
[8]李玉堂,袁标,刘成林,等.国内水硅硼钠石的首次发现[J].岩石矿物学杂志,9(2):170-173.
[9]陈小军,罗顺社,张建坤,等.安棚地区天然碱矿沉积特征及成因研究[J].沉积与特提斯地质,2009,29(3):42-46.
[10]秦伟军,段心建.南襄盆地泌阳凹陷油、碱共生的地质条件[J].地质科学,2004,39(3):339-345.
[11]尤兴弟.准噶尔盆地西北缘风城组沉积相探讨[J].新疆石油地质,1986,7(1):47-52.
[12]朱世发,朱筱敏,陶文芳,等.准噶尔盆地乌夏地区二叠系风城组云质岩类成因研究[J].高校地质学报,2013,19(1):38-45.
[13]朱世发,朱筱敏,王旭龙,等.准噶尔盆地西北缘二叠系沸石矿物成岩作用及对油气的意义[J].中国科学(地球科学),2011,41(11):1602-1612.
[14]蒋宜勤,文华国,祁利祺,等.准噶尔盆地乌尔禾地区二叠系风城组盐类矿物和成因分析[J].矿物岩石,2012,32(2):105-114.
[15]王绪龙.准噶尔盆地烃源岩与油气地球化学[M].北京:石油工业出版社,2013.
[16]张义纲.油气地球化学的若干展望[J].石油实验地质,2005,27(5):484-489.
[17]郑永飞,陈江峰.稳定同位素地球化学[M].北京:科学出版社,2000.
[18]孙镇城,杨藩,张枝焕.中国新生代咸化湖泊沉积环境与油气生成[M].北京:石油工业出版社,1997.
[19]陈开远,何胡军,柳保军,等.潜江凹陷潜江组古盐湖沉积层序的地球化学特征[J].盐湖研究,2002,10(4):22-23.
[20]赵振宇,周瑶琪,马晓鸣,等.水下收缩裂隙形成过程及裂缝充填模式研究[J].地学前缘,2007,14(4):215-221.