LATE CARBONIFEROUS PALEOGEOGRAPHY OF THE YANLONG BAUXITE DEPOSIT IN HENAN PROVINCE: Ore-controlling Significance
ZHOU Yun-rong1, LI Jian-quan2
1. Jiangxi Institute of Survey and Design, Nanchang 330000, China; 2. No. 4 Institute of Geological Exploration, Henan Bureau of Geology and Mineral Development, Zhengzhou 450001, China
Abstract:The Yanlong bauxite deposit is a recently discovered super-large bauxite deposit. By analysis and comparison of a large number of drill core data, it is considered that there existed three main types of sedimentary environment in the area, namely barrier island facies, shallow lake-lagoon facies, and tidal flat-swamp facies. In local barrier island environment, there is no sedimentary mineralization. It is easy to deposit and mineralize in the shallow lake-lagoon environment, in which the thickness of bauxite is moderately correlated with that of ore-bearing rock series. In the tidal flat-swamp environment, the conditions for sedimentary mineralization are poor. The paleogeographic characteristics of Yanlong area in Late Carboniferous determine the thickness of ore-bearing rock series, yet not directly control the mineralization thickness of bauxite. Instead, it indirectly controls the formation by affecting the sedimentary environment combined with other metallogenic conditions.
周云荣, 李建全. 河南省偃龙铝土矿床晚石炭世古地理特征及其对铝土矿的控矿意义[J]. 地质与资源, 2019, 28(3): 254-259.
ZHOU Yun-rong, LI Jian-quan. LATE CARBONIFEROUS PALEOGEOGRAPHY OF THE YANLONG BAUXITE DEPOSIT IN HENAN PROVINCE: Ore-controlling Significance. GEOLOGY AND RESOURCES, 2019, 28(3): 254-259.