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	北三台凸起周缘三叠系物源体系与沉积演化
其他题名	Provenance system and sedimentary evolution of the Triassic in the margin area of the Beisantai uplift
	肖杰 1; 王健 2; 操应长 2; 徐琦松 1; 秦志军 3; 陈洪 3
来源期刊	中国矿业大学学报. 自然科学版
ISSN	1000-1964
出版年	2018
卷号	47 期号:6 页码:1295-1304
中文摘要	准噶尔盆地北三台凸起及其周缘三叠系前期的沉积演化研究较为薄弱,不能满足现阶段精细勘探的需求.本文根据岩心、测井、录井、地震和薄片等资料,论证了北三台凸起在三叠纪时期能向周缘地区提供物源,并结合古地貌特点、古气候特征和同沉积构造活动,对研究区沉积相及其时空演化进行了研究,认为北三台凸起在三叠纪时期属于水上低隆起,能够向周缘地区提供物源,且其提供物源能力在垂向地层上逐渐减弱.研究结果表明:北三台凸起在三叠纪属于正向地貌,地震发射特征上有明显的沟谷,上超和地层减薄现象,且周缘地区岩屑组合类型存在区域分带性,与其他地区存在明显的差异,发育大量磨圆棱角状-次棱角状的岩屑,砂砾岩厚度百分比为11%~79%,由北三台凸起向周缘地区逐渐降低.研究区主要发育三大物源体系,即北三台北部物源体系、北三台南部物源体系和南部物源体系.研究区主要发育扇三角洲相、滩坝和滨浅湖,砂体主要分布在近北三台凸起周缘地区和南部地区.受到古地貌、古气候和构造等作用的控制,研究区早三叠世湖平面开始上升,气候干旱,砂体发育规模较大,中晚三叠世湖平面继续上升,气候变得潮湿,砂体发育规模逐渐变小.研究区邻近北三台凸起地区下三叠统发育的地层砂砾岩厚度百分比高,砂体发育规模较大,为油气提供良好的储集场所,为下一步储层精细研究最有利勘探领域.
英文摘要	The insufficient study of sedimentary evolution in the Triassic of the Beisantai uplift and its periphery, Junggar basin, cannot meet the needs of further exploration at this stage. Based on the data of core, well logs, logging, seismic, and thin-sections, this paper confirmed that the Beisantai uplift can provide source to the surrounding area during the Triassic. Combined with pale-geomorphology background, paleoclimatic characteristics and synsedimentary faulting, the sedimentary facies and their spatiotemporal evolution were studied. The paleogeographic pattern of the Triassic in the study area shows that the Beisantai uplift is the low uplift above the lake, which can provide source to the periphery, and the ability of providing provenance gradually decreases in vertical formations. The results show that the Beisantai uplift is a positive geomorphology in the Triassic. There are obvious gullies, onlap and strata pinching in terms of seismic reflection characteristics. There is regional zoning in rock fragments assemblage types in the margin area of the Beisantai uplift, which is obviously different from other areas, and a large number of rounded angular-sub-angular rock fragments are developed. The thickness percentage of the conglomerates and sandstones is 11%-79%, gradually decreasing from the Beisantai uplift to its periphery. There are three main provenance systems in the study area, which are the north of the Beisantai uplift, the south of the Beisantai uplift and the southern provenance system. The study area mainly develops fan delta facies, beach bar and shore shallow lake depositional system, and the sand bodies basically distribute near the Beisantai uplift and in the south area. Controlled by pale-geomorphology, paleoclimate and tectonism, during the lower Triassic, the lake level began to increase, and the sand body developed over a larger scale under the arid climate. As the lake level continued to rise and the climate became wet in the middle and upper Triassic, the development scale of sand bodies gradually decreased. The formation of the lower Triassic has a high thickness percentage of the conglomerates and sandstones around the Beisantai uplift, and the sand bodies develops in a large scale, providing a good reservoir for oil and gas, which is the most favorable exploration area for further researches on reservoirs.
中文关键词	准噶尔盆地 ; 北三台凸起 ; 三叠系 ; 物源 ; 沉积演化
英文关键词	Junggar basin Beisantai uplift Triassic provenance sedimentary evolution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:6365172
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238694
作者单位	1.中国石油大学(华东)地球科学与技术学院, 青岛, 山东 266580, 中国; 2.中国石油大学(华东)地球科学与技术学院;;海洋国家实验室海洋矿产资源评价与探测技术功能实验室, ;;海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 青岛;;青岛, 山东;;山东 266580;;266071, 中国; 3.中国石油新疆油田分公司勘探开发研究院, 克拉玛依, 新疆 834000, 中国
推荐引用方式 GB/T 7714	肖杰,王健,操应长,等. 北三台凸起周缘三叠系物源体系与沉积演化[J],2018,47(6):1295-1304.
APA	肖杰,王健,操应长,徐琦松,秦志军,&陈洪.(2018).北三台凸起周缘三叠系物源体系与沉积演化.中国矿业大学学报. 自然科学版,47(6),1295-1304.
MLA	肖杰,et al."北三台凸起周缘三叠系物源体系与沉积演化".中国矿业大学学报. 自然科学版 47.6(2018):1295-1304.