The weathering crust eluvial type REE deposits develop widely in southern Hunan.

风化壳淋积型稀土矿床,在湘南地区普遍发育.

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The main controlling factors of reservoir developing are lithology , lithofacies and ancient weathering crust karstification.

储层发育的主要控制因素为岩性和岩相、古风化壳岩溶作用.

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The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.

储层类型主要包括基岩风化壳 、 岩 、 灰质砂岩和砾岩.

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Due to obvious paleo - karst erosion flutes and platform co - exit at the top of the weathering crust.

由于古岩溶作用明显,风化壳顶面具有显著的岩溶地貌特征,形成了独特的沟台并存格局.

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Prediction of solutionfissure and productivity of carbonate weathering crust reservoirs is a worldwide difficult problem.

碳酸盐岩风化壳储层溶蚀缝洞和产能的预测是世界性难题.

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Both weathering crust zonation and quality classification of rock mass are important for shallow - buried tunnels.

风化壳分带和岩体质量分级对浅埋隧道设计和施工很重要,需对这两套系统定性和定量指标做平行判别.

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The deposit is formed in marine invasion by weathering crust transportation, sedimentation, diagenesis and super genesis.

矿床是在海侵过程中风化壳解体,经搬运 、 沉积 、 成岩及表生作用形成.

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