Rocks under the Microscope Zone I Versions ZH2
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A photomicrograph dataset of late Cretaceous to early Paleogene carbonate rocks in Tethys Himalaya, Southern Tibet
Dataset URL >>
: 2020 - 07 - 15
: 2020 - 08 - 03
: 2020 - 08 - 03
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Abstract & Keywords
Abstract: The Late Cretaceous to early Paleogene shallow marine carbonates in the Tethys Himalaya of southern Tibet are important historical witnesses of the evolution of the northern Indian continental margin, the closure of the Neo-Tethys Ocean and the initial India-Asia continental collision. The polarizing microscope was used to collect polarizing microphotographs of carbonate or mixed carbonate-siliciclastic rocks from late Cretaceous Bolinxiala Formation, Jiubao Formation, Zhepure Shanpo Formation and early Paleogene Zongpu Formation in the Tethys Himalaya of southern Tibet. The photomicrograph dataset includes 465 carbonate or mixed carbonate-siliciclastic samples from 5 stratigraphic sections. The location, stratigraphic age, petrographic characteristics of these samples are described in detail. It is expected to provide basic geological information for the reconstruction of sedimentary environment before and after the initial India-Asia continental collision and the timing of initial India-Asia continental collision.
Keywords: photomicrograph; carbonate; Late Cretaceous-early Paleogene; Tethys Himalaya;  South Tibet
Dataset Profile
TitleA photomicrograph dataset of late Cretaceous to early Paleogene carbonate rocks in Tethys Himalaya, Southern Tibet
Data corresponding authorHu Xiumian (huxm@nju.edu.cn)
Data authorsLi Juan, Hu Xiumian
Time rangeThe stratigraphic age of collected samples is from late Cretaceous to early Paleogene (ie. 100 to 54 Ma); Rock samples were collected between 2006 and 2013; Polarized photomicrographs of thin sections were taken in 2020.
Geographical scopeThe sample sections are located in Tingri, Gamba and Zanda county in southern Tibet, bounded to the Lhasa terrane by the Indus-Yarlung-Zangbo Suture to the north, and neighbors on the High Himalaya Crystalline sequences by the South Tibet Detachment System (STDS) to the south. Longitude and latitude: 79°29′9″E – 88°31′39.1″E; 31°16′52.7″N – 28°16′41.2″N.
Polarized microscope resolution4908×3264 pixels
Data volume9.35 GB
Data format*.png, *.jpg, *.xlsx
Data service system<http://dx.doi.org/10.11922/sciencedb.j00001.00081>
Source of fundingThe National Science Fund for Distinguished Young Scholars (41525007); National Key Research and Development Program of China (2018YFE0204201).
Dataset compositionThe dataset includes 4 data files:(1)Field photo data file(.jpg)includes 2 photos showing the fullview of the measured section and the lithological characteristics of outcrop, with a data volume of 19.80 MB;(2)Stratigraphic column data file(.jpg)includes 2 pictures showing the lithology, stratigraphic thickness, age and sampling locations of the 5 measured sections, with a data volume of 704.31 KB; (3)Photomicrograph data file (*.jpg, *.png) comprises 930 polarized photomicrographs of rock thin sections, with a data volume of 9.33 GB; (4)Thin section identification data file (.xlsx) shows microscopic characteristics of the rock samples, with a data volume of 127.36 KB.
Article and author information
Juan Li
主要承担工作:野外剖面实测、样品采集、薄片鉴定与数据集撰写。
Xiumian Hu
主要承担工作:野外剖面实测、样品采集与数据集撰写。
huxm@nju.edu.cn
Publication records
Released: Aug. 3, 2020 ( VersionsZH2
References
中国科学数据
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