Volatile and major elements in mid-ocean ridge basalt glasses from the Gulf of Aden

Abstract: Natural basalt glasses from the Gulf of Aden were analyzed at The University of Tulsa for volatiles and major elements. The concentrations of H2O and CO2 (really CO3) dissolved in the glass were measured by Fourier Transform Infrared Spectrometry (FTIR). Concentrations of major elements were measured by electron microprobe. Concentrations of Cl, F and S were measured by electron microprobe using very long counting times and high beam currents for greater precision. These data are being used in collaboration with Prof. David Graham at Oregon State University who measured CO2 and Helium concentrations in vesicles; and Helium concentrations and Helium isotope ratios in glasses to obtain an integrated understanding of volatiles in a rifting environment that is influenced by a mantle plume. The purpose of the dataset is to understand the sources of volatiles in this region and their potential influence on the rifting process. Other Description: Peter Michael, David Graham, and Jean-Guy Schilling. H2O in Submarine Basalts from the Gulf of Aden (To be submitted).摘要：研究团队于塔尔萨大学（The University of Tulsa）针对亚丁湾天然玄武岩玻璃开展挥发分与主量元素分析。玻璃中溶解的H₂O与CO₂（实际以碳酸根CO₃²⁻形式存在）的浓度通过傅里叶变换红外光谱法（Fourier Transform Infrared Spectrometry，FTIR）测定。主量元素浓度采用电子探针进行测定。氯（Cl）、氟（F）及硫（S）的浓度同样通过电子探针测定，测试时采用极长计数时长与高束流参数以获得更高测试精度。本数据集将与俄勒冈州立大学（Oregon State University）大卫·格雷厄姆教授的测试数据协同使用：格雷厄姆教授测定了玄武岩囊泡中的CO₂与氦（He）浓度，以及玻璃中的氦浓度与氦同位素比值，以此综合解析受地幔柱影响的裂谷环境中的挥发分特征。本数据集的研究目的为阐明该区域挥发分的来源，及其对裂谷作用过程的潜在影响。 其他说明：彼得·迈克尔、大卫·格雷厄姆与让-吉·席林。《亚丁湾海底玄武岩中的H₂O》（待投稿）。