华南地区大云山—幕阜山岩体磁化率各项异性和矿物40Ar-39Ar的年龄数据集（150-95 Ma）

数据包含两部分，分别为大云山—幕阜山岩体的磁化率各项异性（AMS）数据，及岩体南缘的花岗质糜棱岩和围岩云母片岩中的黑云母、角闪石和白云母的40Ar-39Ar的年龄。在野外使用便携式汽油钻机采集岩芯柱，然后在室内将样品切割成标准的直径2.5 cm，高2.2 cm的柱体。最终的测试在中国科学院地质与地球物理研究所的古地磁实验室完成。矿物的40Ar-39Ar的年龄的测试过程主要包含以下步骤。先对岩石样品进行清洗和粉碎，然后在双筒显微镜下手工挑选黑云母颗粒。在为定年做准备之前，重新检查了黑云母，选择了新鲜、透明、没有夹杂物的晶体。实验主要在中国科学院地质与地球物理研究所地质与地球物理重点实验室在40Ar/39Ar和U-Th/He实验室完成。使用MM5400质谱仪高分辨率进行40Ar/39Ar的测量。然后利用excel的软件的插件ArArCALC对测试的原始数据进行进一步的处理。该数据为大云山-幕阜山岩体侵位过程及动力学机制的解释提供年代学的支持。
以上数据已发表在Journal of Geophysical Research: Solid Earth，数据真实可靠

This dataset consists of two parts: anisotropy of magnetic susceptibility (AMS) data from the Dayunshan-Mufushan batholith, and 40Ar-39Ar ages of biotite, amphibole, and muscovite extracted from granitic mylonites and country-rock mica schists at the southern margin of the batholith. Core samples were collected in the field using a portable gasoline-powered drill, then cut into standard cylindrical specimens with a diameter of 2.5 cm and height of 2.2 cm in the laboratory. All final measurements were completed at the Paleomagnetism Laboratory of the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS).

The experimental procedures for 40Ar-39Ar age dating of minerals are as follows: First, rock samples were cleaned and crushed, followed by hand-picking of biotite grains under a binocular microscope. Prior to dating preparation, the biotite grains were re-examined, and only fresh, transparent, inclusion-free crystals were selected. The experiments were primarily conducted at the 40Ar/39Ar and U-Th/He Laboratories of the Key Laboratory of Geology and Geophysics, IGGCAS. 40Ar/39Ar measurements were performed using a high-resolution MM5400 mass spectrometer. Raw measurement data were further processed using the ArArCALC Microsoft Excel add-in.

This dataset provides chronological constraints for interpreting the emplacement process and dynamic mechanism of the Dayunshan-Mufushan batholith. This dataset has been published in *Journal of Geophysical Research: Solid Earth*, and the data are authentic and reliable.