Paleohydrogeology of the Simpevarp area, southeastern Sweden, as evidenced by stable isotopes in fracture minerals

摘要：

Fracture calcite, pyrite, barite and gypsum have been analysed for stable isotopes in order to gain knowledge of the low temperature evolution of the Simpevarp area, south-eastern Sweden. The different fracture filling generations show changing isotope signatures with time, indicating successively lower temperatures, and increased organic and microbial influence. Proterozoic calcite and pyrite have hydrothermal signatures while Paleozoic calcite and pyrite show signs of organic influenced fluids and some in situ microbial activity at lower T°. Calcite and pyrite precipitated from the end of Paleozoic until recent may have precipitated from fluids in equilibrium with present day groundwaters at ambient temperatures.

作者: H.Drake E.L.Tullborg

作者单位: Earth Sciences Centre, G(o)teborg University, Goteborg, Sweden Terralogica AB & Gr(a)bo Sweden

会议类型: 国际会议

会议名称: 第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)

会议地点: 昆明

会议语种:英文

页码: 723-726

在线出版日期: 2007-07-31（万方平台首次上网日期，不代表论文的发表时间）