Distribution, Microfabric, and Geochemical Characteristics of Siliceous Rocks in Central Orogenic Belt, China: Implications for a Hydrothermal Sedimentation Model
Joint Authors
Li, Hongzhong
Zhai, Mingguo
Zhang, Lianchang
Zhou, Yongzhang
Yang, Zhijun
He, Junguo
Liang, Jin
Zhou, Liuyu
Gao, Le
Voudouris, Panagiotis Ch.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-25, 25 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-20
Country of Publication
Egypt
No. of Pages
25
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Marine siliceous rocks are widely distributed in the central orogenic belt (COB) of China and have a close connection to the geological evolution and metallogenesis.
They display periodic distributions from Mesoproterozoic to Jurassic with positive peaks in the Mesoproterozoic, Cambrian—Ordovician, and Carboniferous—Permian and their deposition is enhanced by the tensional geological settings.
The compressional regimes during the Jinning, Caledonian, Hercynian, Indosinian, and Yanshanian orogenies resulted in sudden descent in their distribution.
The siliceous rocks of the Bafangshan-Erlihe ore deposit include authigenic quartz, syn-depositional metal sulphides, and scattered carbonate minerals.
Their SiO2 content (71.08–95.30%), Ba (42.45–503.0 ppm), and ΣREE (3.28–19.75 ppm) suggest a hydrothermal sedimentation origin.
As evidenced by the Al/(Al + Fe + Mn), Sc/Th, ( La / Yb ) N , and ( La / Ce ) N ratios and δCe values, the studied siliceous rocks were deposited in a marginal sea basin of a limited ocean.
We suggest that the Bafangshan-Erlihe area experienced high- and low-temperature stages of hydrothermal activities.
The hydrothermal sediments of the former stage include metal sulphides and silica, while the latter was mainly composed of silica.
Despite the hydrothermal sedimentation of the siliceous rocks, minor terrigenous input, magmatism, and biological activity partly contributed to geochemical features deviating from the typical hydrothermal characteristics.
American Psychological Association (APA)
Li, Hongzhong& Zhai, Mingguo& Zhang, Lianchang& Gao, Le& Yang, Zhijun& Zhou, Yongzhang…[et al.]. 2014. Distribution, Microfabric, and Geochemical Characteristics of Siliceous Rocks in Central Orogenic Belt, China: Implications for a Hydrothermal Sedimentation Model. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-25.
https://search.emarefa.net/detail/BIM-1050999
Modern Language Association (MLA)
Li, Hongzhong…[et al.]. Distribution, Microfabric, and Geochemical Characteristics of Siliceous Rocks in Central Orogenic Belt, China: Implications for a Hydrothermal Sedimentation Model. The Scientific World Journal No. 2014 (2014), pp.1-25.
https://search.emarefa.net/detail/BIM-1050999
American Medical Association (AMA)
Li, Hongzhong& Zhai, Mingguo& Zhang, Lianchang& Gao, Le& Yang, Zhijun& Zhou, Yongzhang…[et al.]. Distribution, Microfabric, and Geochemical Characteristics of Siliceous Rocks in Central Orogenic Belt, China: Implications for a Hydrothermal Sedimentation Model. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-25.
https://search.emarefa.net/detail/BIM-1050999
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1050999