新疆塔里木盆地西部晚白垩世-始新世岩石薄片偏光显微图像数据集  

Polarized light micrograph dataset of Late Cretaceous-Eocene rock thin sections from western Tarim Basin,Xinjiang

作　　者：张世杰 胡修棉[2] Zhang Shijie;Hu Xiumian(Wuxi Research Institute of Petroleum Geology,Sinopec Petroleum Exploration&Production Research Institute,Wuxi 214126,P.R.China;School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,P.R.China)

机构地区：[1]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 [2]南京大学地球科学与工程学院,南京210023

出　　处：《中国科学数据（中英文网络版）》2020年第3期54-64,共11页China Scientific Data

基　　金：国家杰出青年基金项目(41525007)。

摘　　要：在中国新疆维吾尔自治区塔里木盆地西部,大范围出露晚白垩世-始新世的碳酸盐岩(局部可见混积岩或砂岩夹层)。对这些碳酸盐岩的研究不仅可以恢复白垩纪-古近纪塔里木盆地的古地理演化、青藏高原北缘的构造演化,还可以揭示中亚的干旱化过程,为油气勘探提供基础评价建议。虽然这些地层的研究历史已经超过30年,但是至今可以公开查阅的基础岩石学数据仍然非常缺乏,重复的工作仍在不断进行。因此本数据集使用偏光显微镜,对采自塔里木盆地西部西昆仑山和天山山前带露头的晚白垩世-始新世的海陆过渡相地层的682个岩石薄片进行了偏光照片采集,并将其整理发表。其中灰岩436片,陆源碎屑岩129片,混积岩91片,白云岩14片,蒸发岩11片,凝灰岩1片。本次采集的显微照片以包括必要的可重复观测的信息为前提,详细记录了样品的采集位置、地层时代、岩石名称、岩石特征等信息。本数据集可广泛用于塔里木盆地西部晚白垩世-始新世相关的基础地质学研究,也可应用于相关矿产勘查和工程勘察。其中,薄片中典型的浅海相沉积特征,还可以应用于科研、教学与科普。Late Cretaceous-Eocene carbonate rocks(with some sandstone or mixed siliciclastic-carbonate interlayers)widely expose in western Tarim Basin,Xinjiang Uygur Autonomous Region,China.Study of these carbonate rocks can help restore the Cretaceous-Paleogene paleogeographical evolution of the Tarim Basin and the tectonic evolution of the northern margin of Tibetan Plateau,reveal the aridification process of Central Asia,and evaluate oil and gas exploration.Although these stratums have been researched for over 30 years,the petrological data remain scarce and seldom publicly accessible,leading to a waste of time and effort in repetitive work.In view of this,this paper presents a polarized light micrograph dataset of the thin sections of 682 rocks of the Late Cretaceous-Eocene paralic facies strata collected from the West Kunlun Mountains and the Tianshan piedmonts in western Tarim Basin.Among of them,there are thin sections of 436 limestones,129 terrigenous clastic rocks,91 mixed carbonate-siliciclastic rocks,14 dolomites,11 evaporites,and 1 tuff.Micrographs included into the dataset should contain information that could be obtained through repeatable observation.The dataset includes such information as sampling location,stratigraphic age,rock name,and rock characteristics.This micrograph dataset can be widely used for geological research concerning the Late Cretaceous-Eocene era in western Tarim Basin,and can be used to guide petroleum exploration and engineering survey.Besides,the typical shallow marine sedimentary characteristics of the thin sections can also be applied to scientific research,teaching,and public outreach.

关 键 词：岩石薄片 偏光显微照片 碳酸盐岩 塔里木盆地西部 晚白垩世-始新世 

分 类 号：P618.13[天文地球—矿床学]