Data for: The caldera-forming eruption of the Quaternary Payún Matrú volcano, Andean back-arc of the Southern Volcanic Zone

The file shows the mineral compositions and samples location of the Portezuelo Ignimbrite (caldera-forming eruption deposits of the Quaternary Payún Matrú caldera, Andean back-arc of the Southern Volcanic Zone, Argentina).本文件展示了波特塞罗熔结凝灰岩（Portezuelo Ignimbrite，即阿根廷南部火山带安第斯弧后区域第四纪帕云马特拉破火山口的破火山口喷发沉积产物）的矿物组成与采样点位信息。