摘要
皖南上震旦统蓝田组地层中，硒（Ｓｅ）显著富集．其露头剖面丰度为４．４×１０－６，钻孔剖面丰度为４１．３×１０－６，后者为地壳平均丰度（０．０９×１０－６）的４６０倍．硒的富集系数为黑色炭质页岩＞条带状泥灰岩＞含锰粉砂质泥岩＞含锰碳酸盐岩．硒富集的控制因素主要是缺氧环境，其含量与（银＋汞）成正相关．硒的来源主要是陆源。
Concentration of Se is markly high in Lantian Formation (LF) in South Anhui and its average abundance is 4.4×10-6 in outcrop section and 41.3×10-6 in the hole section,and the latter is 460 times the Clark value(0. 09×10-6 ). Enriching factors of Se of LF have the following order:black carbonaceous shale>argillaceous limestone >Mn-bearing silty argillite>Mn-bearing carbonate rock. Anoxic environment is one of main factors of enriching Se and it has some similarity to the geochemical characters of Ag and Hg. Se may come from terrigenous deposits. However, submarine hydrothermal flow is not of significant provenance of Se of LF in South Anhui.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
1994年第4期203-209,共7页
Journal of Hefei University of Technology：Natural Science
关键词
丰度
富集机理
蓝田组
震旦纪
地层
硒
Se abundance
enrichment mechanism
Lantian Formation (LF)
South Anhui
