Liu Cl, Dong Yx, Che P, Fürsich F, Shi Gy, Chen L, Yan Ws (2006)
Publication Language: English
Publication Type: Journal article
Publication year: 2006
Book Volume: 24
Pages Range: 75-80
Journal Issue: 1
Analyses of TOC/S,TOC/DOP,S/Fe relationships and S-TOC-Femultiple linear regression were carried out to determine limiting factors for pyrite formation in black shales of the Honggang Member(Lower Eocene Bu-xin Formation) in the Sanshui Basin.Submember A,showing lower organic carbon and higher iron contents than the other submembers,deposited in oxygenated bottom waters.Bacterial sulfate reduction took place below the sediment-water interface,and pyrite was formed diagenetically and organic carbon was limited.Submember B and C are characterized by large variations in organic carbon content.Organic-rich(TOC4%) rocks deposited under anoxic environments,in which H_(2)S presented above the sediment water interface as well as within the sediments.Pyrite was formed syngenetically and confined by the duration during which iron detritus reacted with H_(2)S in the water column and by the availability of dissolved sulfate that decreased due to an increasing input of fresh waters.For organic-poor(TOC4%) sediments,pyrite was of syngenetic and diagenetic.Organic carbon-limited diagenetic pyrite added to the earlier formed syngenetic pyrite,which was controlled by the time that iron minerals remained in contact with H_(2)S in anoxic waters.
APA:
Liu, C.-l., Dong, Y.-x., Che, P., Fürsich, F., Shi, G.-y., Chen, L., & Yan, W.-s. (2006). Pyrite formation and its control in black shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong. Acta Sedimentologica Sinica, 24(1), 75-80.
MLA:
Liu, Chun-lian, et al. "Pyrite formation and its control in black shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong." Acta Sedimentologica Sinica 24.1 (2006): 75-80.
BibTeX: Download