weathered crust

基本解释

In north of China, Latosol-like soils which were exposed to the earths surface were developed from red Paleosol and red paleo-weathered crust.
现今出露于中国北方地表的红色土壤是在红色古土壤和红色古风化壳上发育的，而且大多经历了不连续的成土过程。
Gas sources of Ordovician weathered crust gas reservoirs in Central Gas Field in the Ordos basin are an important problem that has not been completely solved.
鄂尔多斯盆地中部气田奥陶系风化壳天然气藏的气源问题是迄今尚有争议的重要问题。
The giant central gas field in E′erduosi Basin is a stratigraphic gas reservoirs developed in the ancient weathered crust of carbonate rocks on the top of the Ordovician.
鄂尔多斯盆地中部大气田是发育在奥陶系顶碳酸盐岩古风化壳中的地层油气藏。

风化壳
All these show that the metallogenetic elements of NorthChina Pattern alumina ores(including Shanxi Pattern iron ores)areorginated from the Pre-Cambrian granitoid and the metamorphic series ofthe Palaeo-weathered crust,and the mineralization processes have experiencedstages such as Palaeo-weathered crust-deposition-superficial enrichment etc.
这表明,华北式铝土矿(含山西式铁矿)的成矿物质来源主要为古风化壳的前寒武纪花岗岩类及变质岩系。成矿模式为古风化壳经红土化阶段—迁移就位沉积成矿阶段—表生富集阶段。
风化层