四川龙门山地区阳新组灰岩地质特征及用途

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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.

Key words： Yangxin Formation limestone Permian building stone Longmenshan area Sichuan Province

Received: 02 January 2019

PACS:

P588.24

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	Articles by authors
	LIU Liang
	HAN Hong-ming
	YANG Peng-tao
	YANG Yu-dong
	DAI Yuan
	CHEN Na
	XU Tao

Cite this article:

LIU Liang,HAN Hong-ming,YANG Peng-tao等. GEOLOGY AND UTILIZATION OF YANGXIN FORMATION LIMESTONE IN LONGMENSHAN AREA, SICHUAN PROVINCE[J]. GEOLOGY AND RESOURCES, 2019, 28(5): 448-453.

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http://manu25.magtech.com.cn/Jweb_dzyzy/EN/ OR http://manu25.magtech.com.cn/Jweb_dzyzy/EN/Y2019/V28/I5/448

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