TECTONIC AND SEDIMENTARY FEATURES OF JURASSIC AND PETROLIFEROUS CHARACTER IN THE HEFEI BASIN
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摘要: 合肥盆地是一个以中生界为主体的沉积盆地,受燕山运动Ⅰ幕不同期次挤压逆冲造山的影响,依次形成一系列平行分布的逆冲推覆构造带和前渊盆地。不同时期的前渊盆地既有继承性,又有新生性;从南向北,构造幅度逐渐减小,从而形成合肥盆地侏罗系南厚北薄以磨拉石建造为主体的地质体,仅在不同期次盆地的边缘斜坡带上发育河流—平原沼泽相的杂色砂泥岩夹灰黑色炭质泥岩、薄煤层沉积。扬子地质体向北大规模的推覆和挤压导致的区域性高地温,以及侏罗纪的快速堆积,使盆地深坳处古生界烃源岩在侏罗纪时期即达到过成熟演化阶段,其生烃潜力有限。Abstract: A series of parallel thrusting structural belts and foredeep basins were formed in the Hefei Basin of Mesozoic,affected by different stages compression and thrusting orogenesis of Yanshanian Mvt.1.Foredeep basin had both inheritance and rebirth in different stages,and structural extent gradually diminsh from south to north,then,Molasse formation was formed which was thick in south and thin in north in Jurassic of the Hefei Basin,and sediment of variegation sand-mudstone and gray-black carbonaceous-mudstone and thin coal layer of fluvial-plain marsh facies only grow on marginal slope of different stage basins.As Yangzi geological body thrust and squeeze toward north so as earth temperature is high regionality,and Jurassic accumulate quickly,source rocks of Palaeozoic reached overmature evolution stage during Jurassic in depression ,which is limited in producing hydrocarbon.
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Key words:
- thrust nappe /
- Molasse formation /
- Jurassic /
- foredeep basin /
- the Hefei Basin
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[1] 张交东,刘德良,黄开权等.合肥盆地盆缘刘老碑组烃源岩特征探讨[J].石油实验地质,2004,26(5):474～478. [2] 赵宗举,朱琰,许春华等.合肥盆地与大别山-张八岭构造带的耦合关系[J].石油实验地质,2003,25(6):670～676. [3] 王清晨,从柏林,马力.大别造山带与合肥盆地的构造耦合[J].地学通报,1997,42(6):575～580. [4] 宋明水,江来利,李学田等.大别造山带对合肥盆地的构造控制[J].石油实验地质,2002,24(3):209～215. [5] 薛爱民,金维浚.合肥盆地油气地质及其与大别造山带构造耦合[M].北京:石油工业出版社,2001.47～64. [6] 时华星.合肥盆地侏罗纪的沉积格局与盆地成因[J].油气地质与采收率,2005,12(2):1～4. [7] 许世红,吴光华,黄开权等.安参1井侏罗系和石炭-二叠系暗色泥岩地球化学特征及意义[J].石油实验地质,2002,24(3):284～286. [8] 何登发,吕修祥,林永汉等.前陆盆地分析[M].北京:石油工业出版社,1996.1～11. [9] 刘池洋,赵洪格,杨兴科等.前陆盆地及其确定和研究[J].石油与天然气地质,2002,23(4):307～313. [10] 罗志立.试论中国型(C-型)冲断带及其油气勘探问题[J].石油与天然气地质,1984,5(4):315～323. [11] 黄泽光,高长林.南华北中生代火山岩与前渊盆地[J].石油实验地质,2006,28(1):1～7. [12] 刘和甫.前陆盆地类型及褶皱-冲断层样式[J].地学前缘,1995,2(3):59～68. [13] 高长林,叶德燎,钱一雄.前陆盆地的类型及油气远景[J].石油实验地质,2000,22(2):99～104. [14] 陈发景,汪新文,张光亚.中国中新生代前陆盆地的构造特征和地球动力学[J].地球科学,1996,21(4):366～372. [15] 马新华,魏国齐,钱凯等.我国中西部前陆盆地天然气勘探的几点认识[J].石油与天然气地质,2000,21(2):114～117. [16] 康竹林,翟光明.中国的前陆盆地与油气聚集[J].石油学报,1995,16(4):2～4. [17] 刘池洋,赵红格,杨兴科等.前陆盆地及其确定和研究[J].石油与天然气地质,2002,23(4):307～313 -
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