AG  >> Vol. 5 No. 6 (December 2015)

    蒙古国塔木察格盆地南贝尔凹陷铜钵庙组–南屯组的主要沉积特征
    Main Sedimentary Characters of the Tongbomiao-Nantun Formations in the South Buir Sag, Tamtsag Basin in Mongolia

  • 全文下载: PDF(8553KB) HTML   XML   PP.397-413   DOI: 10.12677/AG.2015.56040  
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作者:  

吴根耀:中国科学院地质与地球物理研究所,北京 ;
高庚,朱德丰,王金奎,刘绍军,孙效东,刘赫,李春柏,李强,张革:大庆油田有限责任公司勘探开发研究院,黑龙江 大庆

关键词:
扇三角洲近岸水下扇湖泊砂体展布下白垩统南贝尔凹陷塔木察格盆地Fan Delta Inshore Underwater Fan Lacustrine Sand Body’s Distribution Lower Cretaceous The South Buir Sag The Tamtsag Basin

摘要:
塔木察格盆地南贝尔凹陷早白垩世早期的铜钵庙组–南屯组是断陷阶段的沉积。综合钻孔岩心观察、室内研究、录井资料和地震相标志,本文论述了各沉积相的识别标志,总结各沉积相及其亚相微相的特征,分阶段探讨砂体及沉积相带展布,进而分析了控制沉积的环境和构造背景及其油气勘探意义。铜钵庙组是初始裂陷期的记录,主要发育扇三角洲相,次为滨浅湖相;铜钵庙组一段有洪(冲)积扇,二段在西部次凹有近岸水下扇。南屯组一段是持续断陷期的沉积,以近岸水下扇和深湖–半深湖为特征的沉积相。南屯组二段沉积期实际上是断陷阶段与剪切–坳陷阶段之间的过渡期,近岸水下扇停止发育,扇三角洲的分布范围大规模缩小,主要为大面积的滨浅湖相沉积,开始有三角洲发育;后者在大磨拐河组沉积期成为主要的沉积相。

The Tongbomiao-Nantun Formations, in age of Early Cretaceous, are deposits of fault-depressing stage of the South Buir Sag, Tamtsag Basin in Mongolia. To synthesize the core sample observations, laboratory works, logging data and seismic facies signs, the paper illustrates the distinguished marks of each sedimentary facies, summarizes the main characteristics of each facies, sub-facies and micro-facies, explores the spatial distribution of the sand bodies and sedimentary facies belts, then analyses the controlling factors of environments and tectonic settings, as well as oil-gas exploration significances. The Tongbomiao Formation is a sedimentary record of the initial rifting-depressing phase, which is mainly composed of fan deltaic facies, and subordinate lake-shore-shallow lacustrine facies. In addition, there develop the pluvial/fluvial fan facies in the No. 1 member and inshore underwater fan facies in the No. 2 member of the formation in the West Sub-Sag. The No. 1 Member of Nantun Formation records a phase of sustained rifting-depressing, which is characterized with inshore underwater fan facies and deep/median deep lacustrine facies. Furthermore, there exist sediments with fan deltaic facies and lakeshore-shallow lacustrine facies. The depositing period of the No. 2 Member of Nantun Formation might be, actually, a transitional phase from the fault-depressing stage to the shear-subsidence stage (sedimentary period of the Damoguaihe-Yimin Formations). During this time, the lakeshore-shallow lacustrine facies are widely occurred, and the distribution scope of fan deltaic facies is extensively reduced. Moreover, delta appears in the southern part of the sag, and becomes main sedimentary facies in depositional period of the Damoguaihe Formation.

文章引用:
吴根耀, 高庚, 朱德丰, 王金奎, 刘绍军, 孙效东, 刘赫, 李春柏, 李强, 张革. 蒙古国塔木察格盆地南贝尔凹陷铜钵庙组–南屯组的主要沉积特征[J]. 地球科学前沿, 2015, 5(6): 397-413. http://dx.doi.org/10.12677/AG.2015.56040

参考文献

[1] 吴根耀, 曹瑞成, 蒙启安, 等. 东北亚晚中生代–新生代北东向断裂和盆地发育[J]. 大庆石油地质与开发, 2014, 33(1): 1-15.
[2] 孙效东, 刘赫, 李春柏, 等. 蒙古国塔木察格盆地塔南凹陷下白垩统构造层序地层学的初步研究[J]. 地球科学前沿, 2014, 4(2): 51-66.
[3] 夏世强, 刘景彦. 不整合面剥蚀量恢复及其构造意义——以贝南凹陷T22不整合面为例[J]. 断块油气田, 2012, 19(1): 12-16.
[4] 李强, 张革, 孙效东, 等. 蒙古国塔木察格盆地塔南凹陷铜钵庙组的沉积特征和构造–古地理意义[J]. 古地理学报, 2014, 16(6): 897-906.
[5] 王雅宁, 鲍志东, 彭仕宓, 等. 贝尔凹陷关键层序识别与油气意义[J]. 石油天然气学报(江汉石油学院学报), 2012, 34(8): 11-16.
[6] 金利洪, 高庚. 蒙古某凹陷石油地质特征与成藏类型及控制因素[J]. 内蒙古石油化工, 2008(16): 132-137.
[7] 师江波. 塔木察格盆地南贝尔东次凹南屯组沉积相研究[J]. 内蒙古石油化工, 2010(13): 125-126.
[8] 佟石磊. 南贝尔凹陷下白垩统层序地层学与沉积相研究[J]. 中国西部科技, 2011, 10(6): 12-13, 32.
[9] 何香香. 塔木察格盆地南贝尔凹陷东次凹北洼槽南一段物源方向分析[J]. 内蒙古石油化工, 2012(12): 56-57.
[10] 王化爱, 钟建华, 隆锋. 蒙古南贝尔凹陷白垩纪地震作用的证据[J]. 沉积学报, 2008, 26(6): 975-981.
[11] 王化爱, 刘广春, 杨玉平, 等. 蒙古国南贝尔凹陷泥质软沉积变形构造特征及沉积序列[J]. 油气地质与采收率, 2010, 17(6): 43-46.
[12] 纪友亮, 蒙启安, 单敬福, 等. 塔南–南贝尔凹陷南屯组下部沉积体系平面展布特征[J]. 石油实验地质, 2011, 33(3): 260-265.
[13] 单敬福, 纪友亮, 潘仁芳. 塔贝尔凹陷南屯组二段沉积体系平面展布特征[J]. 海洋地质与第四纪地质, 2011, 31(3): 93-100.
[14] 单敬福, 纪友亮, 金利红, 等. 塔南–南贝尔凹陷南屯组沉积相特征[J]. 中南大学学报(自然科学版), 2013, 44(1): 241-250.
[15] 焦养泉, 周海民, 庄新国, 等. 扇三角洲沉积体系及其与油气聚集关系[J]. 沉积学报, 1998, 16(1): 70-75.
[16] Wu, G.Y. (2014) Palinspastic Reconstruction and Geological Evolution of Permian Residual Marine Basins Bordering China and Mongolia. Journal of Palaeogeography, 3, 219-232.
[17] Zorin, Yu.A. (1999) Geodynamics of the Western Part of the Mongolia-Okhotsk Collision Belt, Trans Baikal Region (Russia) and Mongolia. Tectonophysics, 306, 33-56.
[18] Wu, G.Y. (2013) Palinspastic Reconstruction and Geological Evolution of Jurassic Basins in Mongolia and Neighboring China. Journal of Palaeogeography, 2, 306-317.
[19] 吴根耀. 白垩纪: 中国及邻区板块构造的一个重要变换期[J]. 中国地质, 2006, 33(1): 64-77.
[20] 吴根耀, 梁江平, 杨建国, 等. 白垩纪北东向构造与松辽盆地演化和油气成藏[J]. 大庆石油地质与开发, 2009, 28(6): 1-11.