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Micro Characteristics of Chert in Volcanic rocks of Xiong'er Group in the Southern Part of the North China Craton
Author(s) -
HE junguo,
ZHOU yongzhang
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12371_7
Subject(s) - china , craton , geological survey , resource (disambiguation) , citation , library science , geochemistry , geography , geology , archaeology , seismology , geophysics , computer science , tectonics , computer network
The examined area is located in Fudian town of Ruyang county, Henan Province, China, which is sandwitched in basaltic andesite and andesitic lavas on the top of Xiong'er Group(Fig .1). The cherts show red, green, yellow-green and purple colors, trend in the direction of 310°, with a thickness ranging from several cm to 1 m. Chert is mostly composed of authigenic quartz much smaller than 0.01mm, and develop scryptocrystalline-amorphous and close-packed structures, consistent with quick crystallization and hydrothermal sedimentation characteristics. 2 Results and Discussions