Elemental analyses and cosmogenic 3He measurements of bulk soil and detrital minerals from a soil near Whitewater, California, USA

ICP-MS elemental analyses and helium isotope measurements of bulk soil samples and detrital magnetite grains to measure the cosmogenic 3He exposure age of a soil offset by the Banning Strand of the San Andreas Fault near Whitewater (CA). Magnetite separates were extracted by a neodymium magnet and then microCT scanned to detect mineral inclusions before helium measurement. Some samples contain inclusions, while others are inclusion-free.

本数据集针对加利福尼亚州怀特沃特附近圣安德烈亚斯断层（San Andreas Fault）班宁段（Banning Strand）所错动的土壤，对全土样品与碎屑磁铁矿颗粒开展电感耦合等离子体质谱法（Inductively Coupled Plasma Mass Spectrometry, ICP-MS）元素分析与氦同位素测量，以获取其宇宙成因³He暴露年龄。研究人员首先通过钕磁铁分选提取磁铁矿颗粒，随后对其进行显微CT（microCT）扫描以检测矿物包裹体，再开展氦同位素测量。部分样品含有矿物包裹体，其余样品则无包裹体。