塔里木盆地古近系层序地层学研究
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摘要
目的全面分析塔里木盆地古近系层序地层学特征。方法通过野外露头资料、测井资料以及地震资料进行综合分析。结果塔里木盆地古近系可识别出5个层序界面,划分出4个三级层序,除第一层序分布较局限外,其他层序在塔里木盆地均有分布。每个层序均可识别出低位体系域、湖侵体系域和高位体系域。古近系沉积体系类型包括河流相、三角洲相、湖泊相和冲积扇相。古近系宽浅型湖泊层序低位体系域最发育;湖侵体系域沉积厚度小,且沉积物粒度细;高位体系域常发育不全,多被侵蚀。结论古地貌对塔里木盆地古近系层序特征具有明显的控制,塔里木盆地内部地势相对平坦,层序内部以低位体系域和湖侵体系域为主。在盆地边缘的拗陷区,各层序体系域发育齐全,沉积厚度较大。
Aim To study the sequence stratigraphy of Paleogene in Tarim basin completely.Methods Based on comprehensive study of outcrops,logging data and seismic data.Results 5 sequence boundaries and 4 third-order sequences can be recognized in Paleogene in Tarim basin.Sequences distribute all over the Tarim basin,except the first sequence distributed locally.Every sequence can be subdivided into lowstand system tract(LST),trangressive system tract(TST) and highstand system tract(HST).Sedimentary types of Tarim basin include fluvial,lake,delta and alluvial fan.The lowstand system tract develops best among three system tracts,and the thickness of trangressive system tract is smaller and grain is finer.The highstand system tract does not present well,because of erosion.Conclusion The distribution features of sequence are controlled by paleogeomorphic.The terrain in Tarim basin is relatively flatter,and the sequences develop lowstand system tract and trangressive system tract well in Tarim basin.The sequences developed on margin of Tarim basin develop fully,and the deposition thickness is high.
Aim To study the sequence stratigraphy of Paleogene in Tarim basin completely.Methods Based on comprehensive study of outcrops,logging data and seismic data.Results 5 sequence boundaries and 4 third-order sequences can be recognized in Paleogene in Tarim basin.Sequences distribute all over the Tarim basin,except the first sequence distributed locally.Every sequence can be subdivided into lowstand system tract(LST),trangressive system tract(TST) and highstand system tract(HST).Sedimentary types of Tarim basin include fluvial,lake,delta and alluvial fan.The lowstand system tract develops best among three system tracts,and the thickness of trangressive system tract is smaller and grain is finer.The highstand system tract does not present well,because of erosion.Conclusion The distribution features of sequence are controlled by paleogeomorphic.The terrain in Tarim basin is relatively flatter,and the sequences develop lowstand system tract and trangressive system tract well in Tarim basin.The sequences developed on margin of Tarim basin develop fully,and the deposition thickness is high.
引文
[1]邵龙义,何志平,顾家裕,等.塔里木盆地古近纪岩相古地理[J].古地理学报,2006,8(3):355-358.
[2]朱如凯,郭宏莉,高志勇,等.塔里木盆地北部地区古近系—白垩系储层质量影响因素探讨[J].地质论评,2007,53(5):625-627.
[3]邵龙义,罗文林,顾家裕,等.塔里木盆地古近系层序地层研究[J].古地理学报,2007,9(3):285-288.
[4]王琪,陈国俊,薛莲花,等.塔里木西部白垩系—古近系沉积成岩演化特征[J].新疆地质,2002,20(3):27-29.
[5]刘景彦,丁孝忠,邱以刚,等.新疆库车拗陷古近系苏维依组高精度层序地层及其发育的主控因素探讨[J].高校地质学报,2009,15(3):319-326.
[6]刘景彦,林畅松,赖兴运,等.塔里木盆地库车拗陷古近系库姆格列木群底砂岩段沉积古地理和物源体系[J].岩石矿物学杂志,2008,27(6):543.
[7]刘景彦,王清华,林畅松,等.库车拗陷西部古近系库姆格列木群层序-体系域[J].石油勘探与开发,2008,35(6):652-653.
[8]沈扬,马玉杰,赵力彬,等.库车拗陷东部古近系—白垩系储层控制因素及有利勘探区[J].石油与天然气地质,2009,30(2)137-139.
[9]薛红兵,朱如凯,郭宏莉,等.塔里木盆地北部古近系—白垩系成岩相及其储集性能[J].新疆石油地质,2008,29(1):49-50.
[10]郭宪璞,苏新,丁孝忠.塔里木盆地北缘白垩系—古近系界线研究[J].地质通报,2004,23(8):751-755.
[11]郭宪璞,王大宁,丁孝忠,等.塔里木盆地吐依洛克组发现沟鞭藻化石[J].地质论评,2008,54(6):815-818.
[12]曲国胜,李亦纲,张宁,等.塔里木西南缘(齐姆根弧)前陆构造及形成机理[J].地质论评,2004,50(6):569-571.
[13]马华东,扬子江.塔里木盆地西南新生代盆地演化特征[J].新疆地质,2003,21(1):95.
[14]贾进华.陆相前陆盆地沉积充填与层序地层模式探讨———以库车前陆盆地为例[J].现代地质,2009,23(4):741-743.
[15]丁文龙,林畅松,漆立新,等.塔里木盆地巴楚隆起构造格架及形成演化[J].地学前缘,2008,15(2):243-251.
[16]郝治纯,关绍曾,叶留生,等.塔里木盆地西部地区新近纪地层及古地理特征[J].地质学报,2002,76(3):290-295.
[17]郑和荣,李铁军,蔡立国,等.中国中西部前陆冲断褶皱带油气地质条件及勘探建议[J].石油与天然气地质,2004,25(2):157-158.
[2]朱如凯,郭宏莉,高志勇,等.塔里木盆地北部地区古近系—白垩系储层质量影响因素探讨[J].地质论评,2007,53(5):625-627.
[3]邵龙义,罗文林,顾家裕,等.塔里木盆地古近系层序地层研究[J].古地理学报,2007,9(3):285-288.
[4]王琪,陈国俊,薛莲花,等.塔里木西部白垩系—古近系沉积成岩演化特征[J].新疆地质,2002,20(3):27-29.
[5]刘景彦,丁孝忠,邱以刚,等.新疆库车拗陷古近系苏维依组高精度层序地层及其发育的主控因素探讨[J].高校地质学报,2009,15(3):319-326.
[6]刘景彦,林畅松,赖兴运,等.塔里木盆地库车拗陷古近系库姆格列木群底砂岩段沉积古地理和物源体系[J].岩石矿物学杂志,2008,27(6):543.
[7]刘景彦,王清华,林畅松,等.库车拗陷西部古近系库姆格列木群层序-体系域[J].石油勘探与开发,2008,35(6):652-653.
[8]沈扬,马玉杰,赵力彬,等.库车拗陷东部古近系—白垩系储层控制因素及有利勘探区[J].石油与天然气地质,2009,30(2)137-139.
[9]薛红兵,朱如凯,郭宏莉,等.塔里木盆地北部古近系—白垩系成岩相及其储集性能[J].新疆石油地质,2008,29(1):49-50.
[10]郭宪璞,苏新,丁孝忠.塔里木盆地北缘白垩系—古近系界线研究[J].地质通报,2004,23(8):751-755.
[11]郭宪璞,王大宁,丁孝忠,等.塔里木盆地吐依洛克组发现沟鞭藻化石[J].地质论评,2008,54(6):815-818.
[12]曲国胜,李亦纲,张宁,等.塔里木西南缘(齐姆根弧)前陆构造及形成机理[J].地质论评,2004,50(6):569-571.
[13]马华东,扬子江.塔里木盆地西南新生代盆地演化特征[J].新疆地质,2003,21(1):95.
[14]贾进华.陆相前陆盆地沉积充填与层序地层模式探讨———以库车前陆盆地为例[J].现代地质,2009,23(4):741-743.
[15]丁文龙,林畅松,漆立新,等.塔里木盆地巴楚隆起构造格架及形成演化[J].地学前缘,2008,15(2):243-251.
[16]郝治纯,关绍曾,叶留生,等.塔里木盆地西部地区新近纪地层及古地理特征[J].地质学报,2002,76(3):290-295.
[17]郑和荣,李铁军,蔡立国,等.中国中西部前陆冲断褶皱带油气地质条件及勘探建议[J].石油与天然气地质,2004,25(2):157-158.
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