Amphibole composition and thermobarometry for rocks from the Famatinian plutons, Puna Plateau, Argentina

Amphibole major element chemistry from the Archibarca, Sierra de Macon, and Taca Taca plutons from the Ordovician Famatinian arc, Puna Plateau, Argentina. Chemical analyses were performed on thin sections by electron microprobe at the TrACEES platform at Melbourne University. Samples were analyzed for major elements to constrain their crystallization pressure and temperature, based on proven thermobarometers. Amphiboles from all samples are Mg-hornblende that record conditions between 650 to 790 °C and 77 to 290 MPa. The file entitled “Amphibole data Famatinian arc - Puna - Argentina” contains two sheets: the first lists 48 major element compositions of amphibole crystals, cation assignment, and thermobarometric estimations; the second lists the composition of standards measured during the experiments.

该数据集收录了阿根廷普纳高原（Puna Plateau）奥陶纪法马蒂纳弧带（Ordovician Famatinian arc）内阿奇瓦尔卡（Archibarca）、马孔山脉（Sierra de Macon）及塔卡塔卡（Taca Taca）深成岩体的角闪石（Amphibole）主量元素化学数据。化学分析采用电子探针（electron microprobe），在墨尔本大学TrACEES平台对薄片样品完成测试。本次测试针对主量元素开展，旨在借助已验证的温压计（thermobarometers）约束角闪石的结晶压力与温度条件。所有样品中的角闪石均为镁角闪石（Mg-hornblende），其记录的结晶温压区间为650℃~790℃、77MPa~290MPa。本数据集对应文件名为"Amphibole data Famatinian arc - Puna - Argentina"，包含两个工作表：第一张工作表列出了48个角闪石晶体的主量元素组成、阳离子赋值结果及温压估算值；第二张工作表则记录了实验过程中测得的标准样品组成。