中国西南地区二叠纪含火山岩屑砂岩的显微图像数据集  

A micrograph dataset of Permian volcanolithic sandstone-laden fragments from southwest China

作　　者：冯薇 何峰 周寅生 杨江海[1] Feng Wei;He Feng;Zhou Yinsheng;Yang Jianghai(School of Earth Sciences,China University of Geosciences(Wuhan),Wuhan 430074,P.R.China)

机构地区：[1]中国地质大学(武汉)地球科学学院,武汉430074

出　　处：《中国科学数据（中英文网络版）》2020年第3期147-157,共11页China Scientific Data

基　　金：国家自然科学基金面上项目(41872106)。

摘　　要：本文收集和整理了中国西南滇黔桂地区二叠纪含火山岩屑砂岩的显微图像数据,对代表性的图像及其岩石特征进行了分类描述。样品均为中细粒-中粗粒砂岩,以火山岩屑含量高为特征。利用装有显微照相系统的蔡司偏光显微镜对砂岩薄片进行观察和照相。本砂岩显微图像集共包含43件砂岩样品的318张显微照片,分为5类,即岩屑砂岩、长石岩屑砂岩、石英岩屑砂岩、岩屑长石砂岩和岩屑石英砂岩。本图像集的建立可为砂岩图像数据的对比分析和相关引用提供便捷途径,同时也可以作为数字化-人工智能识别岩相特征的标准,为将来实现砂岩显微特征的精确数字化识别作基础。We collected micrographs of Permian volcanolithic sandstone-laden fragments from southwestern China and build this microscopic image dataset.This paper is an endeavor to present this dataset and to introduce the lithic characteristics of representative micro images.A camera-loaded Zeiss polarizing microscope(Zeiss)was used to observe and photograph sandstone thin sections.This microscopic image dataset contains 318 micrographs of 43 medium-grained sandstone flakes.Based on their micro textures and detrital components,the sandstone flakes were divided into the five categories:lithic,feldspatho-lithic,lithofeldspathic,quarto-lithic and litho-quartzose sandstone.This dataset can be used to support research on sandstone microscopic observation,classification and modal composition.It can also be used as a reference for digitization and auto identification of sandstone petrofacies,providing bases for accurate digital identification of sandstone features in the future.

关 键 词：二叠纪 火山岩屑砂岩 西南地区 显微图像 数字化 

分 类 号：P588.14[天文地球—岩石学]