Lithium and sediment: the Martinique connection

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2015,（12）
• 页码范围: 1136-1137
• 页数: 2页
• 语种: 中文
• DOI: 10.1007/s11434-015-0825-9

摘要

Fractionation of the two stable isotopes of Li,the lightest metal in the cosmos,is very large in the earth system.Consequently,sedimentary systems and the hydrosphere have developed a variable and distinctive isotopic signature compared with the mantle,which appears very consistent in terms of Li isotopes.In short,most low-temperaturealtered materials take on an isotopically heavy character relative to the mantle;for example,seawater is currently ca.2.6 ％ enriched in δ7Li compared with normal mantle rocks and mid-ocean ridge basalts.