The characteristics and KAr age of clay minerals in the fault gouges in the Yunmeng Mountains, Beijing, China

Autor:	Wang Yufang, Zheng Yadong, Hu Zhenduo
Rok vydání:	1990
Předmět:	geography geography.geographical_feature_category Geochemistry Mineralogy engineering.material Fault (geology) Sericite chemistry.chemical_compound Montmorillonite Beijing chemistry Absolute dating Illite engineering General Earth and Planetary Sciences Kaolinite Clay minerals Geology
Zdroj:	Physics and Chemistry of the Earth. 17:25-32
ISSN:	0079-1946
DOI:	10.1016/0079-1946(89)90005-0
Popis:	There is an abundance of gouges in the sliding-thrusting fault zones in the Yunmeng Mountains, Beijing, China. The 15 samples of gouge clay minerals were examined and found to consist mainly of illite, montmorillonite and kaolinite; half of them have an illite content over 80%. The illite has a good form which is quite similar to the illite of hydrothermal origin. The illite belongs to K-bearing phyllosilicates and can be dated with the KAr age method. Two clusters of KAr model ages are 120 and 95 Ma, which represent the ages of two main faulting events. This inference is basically consistent with the evolution of geological events in the area.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::24b3a67dfe5c2ece2f235959c616d358 https://doi.org/10.1016/0079-1946(89)90005-0 Zobrazit plný text záznamu