西湖凹陷古近系花港组风暴沉积研究
|
摘要
通过岩心观察,发现花港组典型的风暴沉积构造主要包括风暴侵蚀形成的渠模、冲刷沟槽、冲刷面,风暴涡流形成的撕扯构造、菊花状构造,风暴重力流形成的粒序层理,风暴浪形成的丘状交错层理、浪成沙纹层理、平行层理,同生变形构造及生物逃逸构造.运用岩石相组合分析的方法,发现花港组风暴垂向沉积序列发育不完整.其理想的序列由A~G共7段构成。根据花港组垂向沉积序列类型、沉积构造特点总结出了A+B+G、A+B+C、A+B+D、B+C+D、C+E+G、E+F+G等6种风暴沉积序列和原地风暴岩、近源风暴岩和远源风暴岩3种风暴岩类型.
Based on the core observation,it is found that the typical storm-generated sedimentary structures of Huagang Formation mainly include gutter casts,scour holes and scour surfaces by erosion,tear and chrysanthemum-like structures by storm eddy,graded bedding by storm gravity flow,hummocky cross stratification,wave ripples and parallel bedding by storm wave,as well as syngenetic deformation and escape structures. Through analyzing the lithofacies combination,the results show that the vertical storm sedimentary sequences are incompletely developed in comparison to the ideal sequences which consist of bottom-up seven layers from A to G. Six sequences of storm deposits,namely A+B+G,A+B+C,A+B+D,B+C+D,C+E+G and E+F+G,and three types of tempestite(in-situ,proximal and distal)are summed up on the basis of the vertical sedimentary sequences and structure features.
Based on the core observation,it is found that the typical storm-generated sedimentary structures of Huagang Formation mainly include gutter casts,scour holes and scour surfaces by erosion,tear and chrysanthemum-like structures by storm eddy,graded bedding by storm gravity flow,hummocky cross stratification,wave ripples and parallel bedding by storm wave,as well as syngenetic deformation and escape structures. Through analyzing the lithofacies combination,the results show that the vertical storm sedimentary sequences are incompletely developed in comparison to the ideal sequences which consist of bottom-up seven layers from A to G. Six sequences of storm deposits,namely A+B+G,A+B+C,A+B+D,B+C+D,C+E+G and E+F+G,and three types of tempestite(in-situ,proximal and distal)are summed up on the basis of the vertical sedimentary sequences and structure features.
引文
[1]Kelling G,Mullin P R.Graded limestones and limestone-quartzite couplets:Possible storm-deposits from the Moroccan Carboniferous[J].Sedimentary Geology,1975,13(3):161-190.
[2]Aigner T.Schill-Tempestite im Oberen Muschelkalk(Trias,SWDeutschland)[J].Neues Jahrbuch für Geologie und PalontologieAbhandlungen,1979,157:326-343.
[3]郑伟,孙长彦,白万备,等.洛阳龙门地区寒武系第三统张夏组碳酸盐岩风暴沉积类型及遗迹化石特征[J].地质科技情报,2015,34(6):92-99.
[4]魏钦廉,王起琮,陈亮,等.山西中阳上寒武统三山子组下部风暴岩沉积特征及其成因[J].海相油气地质,2013,18(4):41-45.
[5]冯荣昌,吴因业,杨光,等.川中大安寨段风暴沉积特征及分布模式[J].沉积学报,2015,33(5):909-918.
[6]姜在兴,赵澂林,刘孟慧,等.东濮凹陷西部湖相风暴沉积的初步研究[J].沉积学报,1990,8(1):107-114.
[7]袁静.惠民凹陷古近系风暴沉积研究[J].中国石油大学学报:自然科学版,2006,30(4):1-6.
[8]冯兴雷,马立祥,邓宏文,等.大王北洼陷湖相滩坝砂体风暴沉积特征[J].新疆地质,2011,29(1):80-85.
[9]王子煜,张明利.东海西湖凹陷新生界主要不整合面地层剥蚀厚度恢复[J].地质论评,2005,51(3):309-318.
[10]李宁,汤睿,赵洪,等.西湖凹陷平湖构造带物源特征分析[J].海洋石油,2017,37(2):21-26.
[11]胡明毅,柯岭,梁建设,等.西湖凹陷花港组沉积相特征及相模式[J].石油天然气学报,2010,32(5):1-5.
[12]马志鑫,张万平,刘伟,等.黔东镇远地区早寒武世清虚洞组潮坪风暴沉积特征及古地理意义[J].沉积学报,2012,30(5):787-794.
[13]刘宝珺,许效松,罗安屏,等.中国扬子地台西缘寒武纪风暴事件与磷矿沉积[J].沉积学报,1987,5(03):33-44.
[14]白万备,李建厚,孙长彦,等.碳酸盐风暴沉积研究现状与进展[J].河南理工大学学报:自然科学版,2011,30(4):426-432.
[15]宋金民,刘树根,赵异华,等.川中地区中下寒武统风暴岩特征及沉积地质意义[J].石油学报,2016,37(1):30-42.
[16]郑斌嵩,牟传龙,梁薇,等.黔西北丁台地区下寒武统清虚洞组风暴沉积的发现及其意义[J].沉积学报,2016,34(3):478-486.
[17]周晓峰,刘丽丽,王建国,等.鄂尔多斯盆地延长组开阔浅水湖泊风暴沉积[J].科技导报,2016,34(18):203-208.
[18]钟建华,倪良田,邵珠福,等.青岛灵山岛下白垩统风暴岩与风暴沉积的发现及意义[J].古地理学报,2016,18(3):381-398.
[19]孙钰,钟建华,姜在兴,等.松辽盆地南部青山口组湖相风暴沉积[J].煤田地质与勘探,2006,34(1):12-16.
[20]唐武,王英民,袁文芳,等.塔北地区三叠系黄山街组湖相风暴沉积[C]//全国古地理学及沉积学学术会议论文集,2012.
[21]代文军,龚全胜.甘肃北山红山井地区二叠系钙质风暴岩的发现及意义[J].甘肃科技,2008,24(7):74-77.
[2]Aigner T.Schill-Tempestite im Oberen Muschelkalk(Trias,SWDeutschland)[J].Neues Jahrbuch für Geologie und PalontologieAbhandlungen,1979,157:326-343.
[3]郑伟,孙长彦,白万备,等.洛阳龙门地区寒武系第三统张夏组碳酸盐岩风暴沉积类型及遗迹化石特征[J].地质科技情报,2015,34(6):92-99.
[4]魏钦廉,王起琮,陈亮,等.山西中阳上寒武统三山子组下部风暴岩沉积特征及其成因[J].海相油气地质,2013,18(4):41-45.
[5]冯荣昌,吴因业,杨光,等.川中大安寨段风暴沉积特征及分布模式[J].沉积学报,2015,33(5):909-918.
[6]姜在兴,赵澂林,刘孟慧,等.东濮凹陷西部湖相风暴沉积的初步研究[J].沉积学报,1990,8(1):107-114.
[7]袁静.惠民凹陷古近系风暴沉积研究[J].中国石油大学学报:自然科学版,2006,30(4):1-6.
[8]冯兴雷,马立祥,邓宏文,等.大王北洼陷湖相滩坝砂体风暴沉积特征[J].新疆地质,2011,29(1):80-85.
[9]王子煜,张明利.东海西湖凹陷新生界主要不整合面地层剥蚀厚度恢复[J].地质论评,2005,51(3):309-318.
[10]李宁,汤睿,赵洪,等.西湖凹陷平湖构造带物源特征分析[J].海洋石油,2017,37(2):21-26.
[11]胡明毅,柯岭,梁建设,等.西湖凹陷花港组沉积相特征及相模式[J].石油天然气学报,2010,32(5):1-5.
[12]马志鑫,张万平,刘伟,等.黔东镇远地区早寒武世清虚洞组潮坪风暴沉积特征及古地理意义[J].沉积学报,2012,30(5):787-794.
[13]刘宝珺,许效松,罗安屏,等.中国扬子地台西缘寒武纪风暴事件与磷矿沉积[J].沉积学报,1987,5(03):33-44.
[14]白万备,李建厚,孙长彦,等.碳酸盐风暴沉积研究现状与进展[J].河南理工大学学报:自然科学版,2011,30(4):426-432.
[15]宋金民,刘树根,赵异华,等.川中地区中下寒武统风暴岩特征及沉积地质意义[J].石油学报,2016,37(1):30-42.
[16]郑斌嵩,牟传龙,梁薇,等.黔西北丁台地区下寒武统清虚洞组风暴沉积的发现及其意义[J].沉积学报,2016,34(3):478-486.
[17]周晓峰,刘丽丽,王建国,等.鄂尔多斯盆地延长组开阔浅水湖泊风暴沉积[J].科技导报,2016,34(18):203-208.
[18]钟建华,倪良田,邵珠福,等.青岛灵山岛下白垩统风暴岩与风暴沉积的发现及意义[J].古地理学报,2016,18(3):381-398.
[19]孙钰,钟建华,姜在兴,等.松辽盆地南部青山口组湖相风暴沉积[J].煤田地质与勘探,2006,34(1):12-16.
[20]唐武,王英民,袁文芳,等.塔北地区三叠系黄山街组湖相风暴沉积[C]//全国古地理学及沉积学学术会议论文集,2012.
[21]代文军,龚全胜.甘肃北山红山井地区二叠系钙质风暴岩的发现及意义[J].甘肃科技,2008,24(7):74-77.