地质通报2025，Vol.44Issue(7)：1338-1349,12.DOI:10.12097/gbc.2023.03.020
西准噶尔哈拉阿拉特组与阿腊德依克赛组新老关系新证:来自克-百油田424井、581井的证据
New evidence of the new and old relationship between the Hala'alate Formation and the Aladeyikesai Formation in West Junggar:Evidence from well 424 and well 581 of Ke-Bai oilfield
摘要
Abstract
[Objective]The original contact relationship between lithostratigraphic groups is the key evidence to record and prove the relationship between the two adjacent lithostratigraphic units,and is also the necessary and sufficient condition to establish and name the stratigraphic units.Since the formation of the Late Carboniferous Hala'alate formations and the Aladeyikesai in the Baogutu stratigraphic area of West Junggar,it is believed that"the lithostratigraphic units contact relationship is unclear".[Methods]We have identified two sets of sedimentary formations with distinct lithology,which are easy to identify and distinguish.Both of them are from the core of the Carboniferous system of well 424 and well 581 of Ke-Bai oilfield,which are adjacent to the south of the type section,and are mainly composed of"(upper)marine fine clastic rock/(lower)volcanic breccia".The core records and logging electrical datas confirm that the two formations are conformable contact.The upper and lower sets of strata can be compared with the lower clastic rock section of the Aladeyikesai Formation and the top section of the Hala'alate Formation from the type section of the Hashan area.[Results]Moscovian sporopollen assemblages from marine fine clastic rocks of two wells were obtained,such as Noeggerathiopsidozonotriletes-Protohaploxypinus-Hamiapollenites;this fine clastic rocks were conformable contact by the volcanic rocks with the zircon U-Pb age of 306.2±5.8 Ma.Combined with the zircon U-Pb ages(303～295 Ma)of the volcanic rocks in this formation in Hashan region,the main body of the Aladeyikesai Formation is placed in the Gzhelian Stage of the Upper Carboniferous.[Conclusions]Combined with the 310.5 Ma zircon U-Pb age obtained in the volcanic rocks of the adjacent wells in the east of well 581,this volcanic-dominated Hala'alate Formation is placed in Kasimovian-Moscovian Stage of the Upper Carboniferous.The clear original conformable contact relationship support the old-new relations between the two stratigraphic units,and also provide new data for the formation sedimentary sequence and sedimentary basin evolution of the Carboniferous.关键词
上石炭统/阿腊德依克赛组/哈拉阿拉特组/新老关系/整合接触/克拉玛依-百口泉油田/包古图地层小区/西准噶尔Key words
Upper Carboniferous/Aladeyikesai Formation/Hala'alate Formation/the new and old relationship/conformable contact/Kelamayi-Baikouquan oilfield/Baogutu stratigraphic minor region/West Junggar分类
天文与地球科学引用本文复制引用
刘凯,李永军,彭南赫,张景,付浩,王鑫,王韬..西准噶尔哈拉阿拉特组与阿腊德依克赛组新老关系新证:来自克-百油田424井、581井的证据[J].地质通报,2025,44(7):1338-1349,12.基金项目
国家重点研发计划《深地资源勘查开采重点专项》(编号:2018YFC060400)和中国石油天然气股份有限公司科学研究与技术开发项目《北疆海相泥盆—石炭系油气地质研究》(编号:2022DJ0507) Supported by the National Key Research and Development Plan"Key Special Project for Deep Resource Exploration and Mining"(No.2018YFC060400),Scientific Research and Technology Development Project of PetroChina"Study on Petroleum Geology of Marine Devonian-Carboniferous in Northern Xinjiang"(No.2022DJ0507) （编号:2018YFC060400）
