塔中北斜坡中奥陶统一间房组划分对比及分布  

THE DIVISION AND DISTRIBUTION OF THE YIJIANFANG FORMATION IN THE NORTH SLOPE OF THE TAZHONG UPLIFT

作　　者：张正红[1] 赵治信[1] 潘文庆[1] 邓兴梁[1] 于红枫[1] 谢恩[1] 章森桂[2] 

机构地区：[1]中国石油塔里木油田分公司,新疆库尔勒841000 [2]中国科学院南京地质古生物研究所,江苏南京210008

出　　处：《地层学杂志》2015年第3期274-282,共9页Journal of Stratigraphy

基　　金：中国石油天然气股份有限公司重大科技专项(2010E-2107)资助

摘　　要：塔里木盆地塔中地区中奥陶统一间房组是否存在一直未得到肯定,近期从塔中北斜坡相关井发现中奥陶世晚期牙形石化石,证实一间房组在塔中北斜坡存在。综合年代地层框架,结合地震相、测井沉积相、成像测井、岩芯和薄片观察等资料的研究,将塔中西部地区原"良里塔格组"底部一部分改划归一间房组。通过精细地震标定和层位追踪,确定塔中地区一间房组主要分布于中古3井—塔中88井台缘带和中古28井以北的区域。Whether the Middle Ordovician Yijianfang Formation occurs in the Tazhong Uplift is a matter of debate. Recently, Middle Ordovician conodonts have been recovered from the key wells in northern slope of the Tazhong Uplift. This discovery confirms the presence of the Yijianfang Formation in the northern slope of the Tazhong Uplift. Integrating biostratigraphic data with seismic, well-log, imaging-log, drill core, and thin-section petrographic data, we re-interpret strata previously described as the basal Liangl- itage Formation as the Yijianfang Formation in the western Tazhong Uplift. On the basis of accurate seis- mic stratigraphic correlation, we conclude that the Yijianfang Formation is mostly distributed in drill core ZG3, TZ88 in platform margin, and the area to the north of ZG28.

关 键 词：岩石地层 牙形石 一间房组 中奥陶统 塔里木盆地 新疆 

分 类 号：P534.42[天文地球—古生物学与地层学]