- 责任者：Sun Tengjiao (State Key Lab. of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China ) ; Luo Xiaoping
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2013
- 卷期：28(4)
- 关键词：硅质岩 ; silicolite ; 贵州 ; Guizhou Province
- 页码：p.582-588
- 图表：6 illus., 1 table, 20 refs.
- 分类号：0803
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
libri" size="3">In the upper Doushantuo formation is develops a set of siliceous rock in Songlin area, Gui zhou province. The siliceous rock consists mainly of siliceous shale, concretion rich siliceous rock, phosphorus siliceous rocks and siliceous concretion. In A1-Fe-Mn discrimination diagrams value of the siliceous rock fall in biogenic region II. The value of MnO/TiO2 ratios is in range of 0.01 to 0. 1, All these imply a strong influence of terrestrial supply source. Combined with analysis of lithofacies paleogeography and li- thologic associations the siliceous rock should be deposited in semi-deep to deep retention-reduction envi- ronment of continental shelf at margin of oceanic basin. Influenced by bio-chemistry SiOe-rich sediment was differentiated during diagenesis and SiO2 was gathered together and eoagulatreded into rock. In the anadiagenesis stage, it experienced obviously recrystallization and metasomatism.