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在低温环境下，拉斯曼丘陵斯托尼斯半岛表生环境具有微弱的化学风化作用。富集系数、富集分异系数等指标的分析表明，化学元素存在不同程度的富集、迁移。其中Ｃａ的迁移能力最强，Ｍｇ、Ｓｒ、Ｚｎ、Ｋ、Ｎａ等元素也均有较强的迁移能力，在不同粒级中各元素表现出不同的集散特征。风化壳硅铝率平均为５．７９，属弱风化类型，相对于母岩，风化壳中ＳｉＯ２、Ａｌ２Ｏ３均有一定淋失。化学风化作用具有由南向北增强趋势；剖面中具有中下层风化程度略高于表层的趋势。
At low temperatures, the Stonis Peninsula epicenter of the Lethman hills has a weak chemical weathering effect. Enrichment coefficient, enrichment coefficient and other indicators of the analysis showed that the chemical elements exist in different degrees of enrichment, migration. Among them, Ca had the strongest migration ability, and Mg, Sr, Zn, K, Na and other elements also had strong ability to migrate, and each element showed different characteristics in different fractions. Weathering crustal Si-Al average rate of 5.79, is a weakly weathered type, relative to the parent rock, weathered shells SiO2, Al2O3 have a certain leaching. The chemical weathering has an increasing trend from south to north. The profile has the tendency that the weathering degree of the middle and lower layers is slightly higher than that of the surface layer.