Gneiss saprolite weathering and soil genesis along an east-west regolith sequence (NE Brazil)

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• 作者：Jean Cheyson Barros dos Santos^a ; ^{jeancheyson@yahoo.com.br} ; Emilia Le Pera^b ; ^{emilia.lepera@unical.it} ; Valdomiro Severino de Souza Jú ; nior^a ; ^{valdomiro.souzajunior@ufrpe.br} ; Marcelo Metri Corrê ; a^c ; ^{marcelometri@yahoo.com} ; Antonio Carlos de Azevedo^d ; ^{aazevedo@usp.br}
• 关键词：SEM ; scanning electron microscopy ; XRD ; X-ray diffraction ; ICP-AES ; inductively coupled plasma-atomic emission spectrometry ; Db ; bulk density ; Dp ; particle density ; P ; total porosity ; OC ; organic carbon ; V ; base saturation ; CEC ; cation exchange capacity ; Feo ; poorly crystalline forms of iron oxides ; Alo ; poorly crystalline forms of aluminum oxides ; AAS ; atomic absorption spectroscopy ; Xd ; decomposition index ; Ip ; micropetrographic index ; ɛ ; strain parameter ; Z ; loss of elements ; CIA ; Chemical In
• 刊名：CATENA
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：150
• 期：Complete
• 页码：279-290
• 全文大小：2601 K
• 卷排序：150

文摘

Veins in the rock structure control the advancement of the weathering front. Pedogenesis advances in saprolite gradual transitions and is halted in abrupt ones. Same type of clays is present in all profiles, but in varying amount.