酸性淋滤作用是风化壳剖面上REE富集分异的主要控制因素。
Acidic leaching is regarded as a major factor affecting REE enrichment and differentiation in the weathering profile.
研究表明，红土风化壳剖面自下而上，伊利石、高岭石减少，三水铝石、针铁矿、赤铁矿增多。
The study shows that from the bottom to the top of laterite weathering crust profile, illite and kaolin decrease, gibbsite, goethite and hematite increase.
而南部汶南剖面则发育顺层“台地型”古风化壳，层间厚380余米的古岩溶带成为主要储层类型。
The latter is of plateau type, and the major reservoir is an interlayer paleokarst about 380 m thick.
而南部汶南剖面则发育顺层“台地型”古风化壳，层间厚380余米的古岩溶带成为主要储层类型。
The latter is of plateau type, and the major reservoir is an interlayer paleokarst about 380 m thick.
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