Abstract：The limestone of Yangxin Formation, Permian, is 240-350 m thick with the strike extension more than 50 km, exposed area over 15 km2 and abundant resource reserves. The resources is 51.93 Mt within a 0.6 km2 range of the study area. In terms of the main chemical composition content in Yangxin Formation limestone, CaO is 49.87%-55.74%, MgO 0.24%-2.80%, SiO2 0.38%-5.80%, SO3 0.01%-0.40%, and K2O+Na2O 0.02%-0.12%, which all meet the requirements of grade-I material for cement. The saturated compressive strength of 41.6-82.4 MPa, firmness of 1%-3% and crushing index of 8.2%-9.6% all reach the required indexes of building stone. The analysis and evaluation on the geological characteristics and physical-chemical indexes of Yangxin Formation limestone show that it can be widely used in cement, building stone and other fields, and has important economic value and significance.
刘亮, 韩洪明, 杨鹏涛, 杨宇东, 戴元, 陈娜, 许涛. 四川龙门山地区阳新组灰岩地质特征及用途[J]. 地质与资源, 2019, 28(5): 448-453.
LIU Liang, HAN Hong-ming, YANG Peng-tao, YANG Yu-dong, DAI Yuan, CHEN Na, XU Tao. GEOLOGY AND UTILIZATION OF YANGXIN FORMATION LIMESTONE IN LONGMENSHAN AREA, SICHUAN PROVINCE. GEOLOGY AND RESOURCES, 2019, 28(5): 448-453.
2019, Vol. 28 
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