Geochronological data from Detrital Muscovite 40Ar/39Ar ages from the Indus Group, Ladakh, NW India

This dataset presents single-grain 40Ar/39Ar geochronological results generated from detrital muscovite samples belonging to the Indus Group, Ladakh using laser step-heating and mass spectrometry. The research objective is to constrain the timing of India-Asia collision by dating individual muscovite mineral grains at high precision. This is hypothesis-driven geochronological research, designed to reconstruct provenance histories in the studied region. Data were collected through laboratory argon extraction and isotopic analysis, with detailed analytical parameters and standards recorded. The dataset consists of numerical measurements of isotopic ratios, step-heating conditions, decay constants, and derived ages (in Ma), organized in tabular format suitable for reproducible geochronological analysis. The data was collected at the New Mexico Geochronology Laboratory at the New Mexico Tech. This dataset is part of the Tectonics journal article titled "Timing of the India-Kohistan Ladakh Arc and India-Asia Collisions Based on Detrital Muscovite Provenance of the Indus Group, Ladakh, NW India".

本数据集呈现了采自印度河群（Indus Group）、拉达克（Ladakh）地区碎屑白云母样品的单颗粒40Ar/39Ar地质年代学测试结果，测试采用激光步进加热法与质谱分析法完成。本研究的目标为通过高精度定年单颗白云母矿物颗粒，限定印度-亚洲碰撞事件的发生时间。本研究属于假说驱动型地质年代学研究，旨在重建研究区域的物源演化历史。实验数据通过实验室氩气提取与同位素分析获取，详细分析参数与测试标准均已记录留存。数据集包含同位素比值、步进加热条件、衰变常数以及推导得到的年龄（单位：百万年，Ma）的数值测量结果，以表格形式组织，可用于可重复的地质年代学分析。本数据集采集于新墨西哥理工学院（New Mexico Tech）下属的新墨西哥地质年代学实验室（New Mexico Geochronology Laboratory）。本数据集隶属于《构造学》（Tectonics）期刊的一篇学术论文，论文标题为《基于印度西北部拉达克印度河群碎屑白云母物源分析的印度-科希斯坦-拉达克弧与印度-亚洲碰撞时间》。