Element mobility and oxygen isotope systematics during submarine alteration of basaltic glass

Abstract

Studies of the submarine alteration of basaltic glass may improve the understanding of crust-seawater interactions and the oceanic elemental cycle. Natural alteration processes such as the palagonitization of basaltic glass are complex, and their elucidation is crucial to the understanding of fluid-rock interactions. This study involves major and trace element and isotope mapping of a submarine-altered basaltic glass grain, and reveals sequential development of alteration textures toward the grain core through the transition between unaltered glass and palagonite. The conversion from basaltic glass to palagonite in a low-temperature submarine environment results in enrichment in B

A potential stibnite reference material for sulfur isotope determination by LA-MC-ICP-MS

“…Element concentrations were calculated by internal standardization (Sb) based on the normalization of the sum of all metal sulfides and oxides to 100 wt%. 52,53…”

“…Element concentrations were calculated by internal standardization (Sb) based on the normalization of the sum of all metal suldes and oxides to 100 wt%. 52,53 2.2.4 Laser ablation MC-ICP-MS. A MC-ICP-MS (Nu Plasma III, Nu Instruments, UK) coupled with a RESOlution-LR-S155 laser ablation system (ASI, Australia) was used for in situ sulfur isotope measurements. The laser ablation system consisted of a 193 nm ArF CompexPro102 excimer laser (Coherent, USA), a double-cell sample chamber, a computer-controller, and a high-precision X-Y sample positioning stage.…”