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Preface; Contents; About the Author; 1 Indian Tropical Soils: An Overview; Abstract; References; 2 Cracking Clay Soils (Vertisols): Pedology, Mineralogy and Taxonomy; Abstract; 2.1 Introduction; 2.2 Factors of Vertisol Formation: A Revisit; 2.2.1 Parent Material; 2.2.2 Climate; 2.2.3 Topography; 2.2.4 Vegetation; 2.2.5 Time; 2.3 Smectite Clay Minerals in Vertisols: Recent Initiatives for Their Proper Characterization; 2.3.1 Characteristics of Smectite; 2.3.2 Seat of Charge in and Layer Charge of Fine Clay Smectites; 2.3.3 Hydroxy-Interlayered Smectites (HIS) and Determination of Layer Charge.
2.4 Genesis of Smectites in Vertisols: A Revised Status2.5 Recent Advances in Pedogenic Processes in Vertisols; 2.5.1 Clay Illuviation in Vertisols: An Example of Proanisotropism; 2.5.2 Factors of Clay Illuviation in Vertisols; 2.5.3 Relative Rapidity of Clay Illuviation, Pedoturbation and Slickenside Formation; 2.5.4 Development of Microstructures and Vertical Cracks in Vertisols as Controlled by Smectite Swelling; 2.6 Evolutionary Pathways of Vertisol Formation; References; 3 Red Ferruginous Soils: Pedology, Mineralogy and Taxonomy; Abstract; 3.1 Introduction.
3.2 US Soil Taxonomic Classes and Factors in the Formation of Red Ferruginous (RF) Soils3.3 Clay Illuviation, Clay Enriched B Horizons and Taxonomic Rationale of RF Soils of Humid Tropical (HT) Climate; 3.4 RF Soils (Alfisols) in Semi-arid Tropics (SAT): Record of Climate Change and Polypedogenesis in the Holocene Period; 3.5 Acidity and Its Nature and Charge Characteristics in RF Soils of HT Climate: The Present Status; 3.6 Clay Mineralogy of RF Soils of the HT Climate: Recent Advances; 3.6.1 Genesis of Gibbsite at the Expense of Kaolinite: Dissolution of a Myth.
3.6.2 Mixed Mineralogy Class for RF Soils of HT Climate: A Rational Proposal3.7 Ultisols of Indian Tropical Humid Climate in Context with Doubtful Existence of Oxisols; References; 4 Soils of the Indo-Gangetic Alluvial Plains: Historical Perspective, Soil-Geomorphology and Pedology in Response Climate Change and Neotectonics; Abstract; 4.1 Introduction; 4.2 Early Studies on Soils; 4.3 Soil-Geomorphology of the Indo-Gangetic Plains (IGP); 4.4 Soil Ages of the IGP; 4.5 Pedogenic Response of the IGP Soils to Holocene Climatic Fluctuations.
4.6 Pedogenic Response of the IGP Soils to Neotectonic Events4.7 Soils of the IGP: Bio-climates, Pedogenic Processes, Mineralogy and Taxonomic Classes; 4.7.1 Development of Soils in Different Bio-climates; 4.7.2 Pedogenic Processes, Polygenesis and Taxonomic Classes of the IGP Soils; 4.7.3 Clay Minerals and Mineralogy Class of the IGP Soils; References; 5 Conceptual Models on Tropical Soil Formation; Abstract; 5.1 Introduction; 5.2 Vertisols Spatially Associated with Alfisols and Mollisols on Zeolitic Deccan Basalts.
2.4 Genesis of Smectites in Vertisols: A Revised Status2.5 Recent Advances in Pedogenic Processes in Vertisols; 2.5.1 Clay Illuviation in Vertisols: An Example of Proanisotropism; 2.5.2 Factors of Clay Illuviation in Vertisols; 2.5.3 Relative Rapidity of Clay Illuviation, Pedoturbation and Slickenside Formation; 2.5.4 Development of Microstructures and Vertical Cracks in Vertisols as Controlled by Smectite Swelling; 2.6 Evolutionary Pathways of Vertisol Formation; References; 3 Red Ferruginous Soils: Pedology, Mineralogy and Taxonomy; Abstract; 3.1 Introduction.
3.2 US Soil Taxonomic Classes and Factors in the Formation of Red Ferruginous (RF) Soils3.3 Clay Illuviation, Clay Enriched B Horizons and Taxonomic Rationale of RF Soils of Humid Tropical (HT) Climate; 3.4 RF Soils (Alfisols) in Semi-arid Tropics (SAT): Record of Climate Change and Polypedogenesis in the Holocene Period; 3.5 Acidity and Its Nature and Charge Characteristics in RF Soils of HT Climate: The Present Status; 3.6 Clay Mineralogy of RF Soils of the HT Climate: Recent Advances; 3.6.1 Genesis of Gibbsite at the Expense of Kaolinite: Dissolution of a Myth.
3.6.2 Mixed Mineralogy Class for RF Soils of HT Climate: A Rational Proposal3.7 Ultisols of Indian Tropical Humid Climate in Context with Doubtful Existence of Oxisols; References; 4 Soils of the Indo-Gangetic Alluvial Plains: Historical Perspective, Soil-Geomorphology and Pedology in Response Climate Change and Neotectonics; Abstract; 4.1 Introduction; 4.2 Early Studies on Soils; 4.3 Soil-Geomorphology of the Indo-Gangetic Plains (IGP); 4.4 Soil Ages of the IGP; 4.5 Pedogenic Response of the IGP Soils to Holocene Climatic Fluctuations.
4.6 Pedogenic Response of the IGP Soils to Neotectonic Events4.7 Soils of the IGP: Bio-climates, Pedogenic Processes, Mineralogy and Taxonomic Classes; 4.7.1 Development of Soils in Different Bio-climates; 4.7.2 Pedogenic Processes, Polygenesis and Taxonomic Classes of the IGP Soils; 4.7.3 Clay Minerals and Mineralogy Class of the IGP Soils; References; 5 Conceptual Models on Tropical Soil Formation; Abstract; 5.1 Introduction; 5.2 Vertisols Spatially Associated with Alfisols and Mollisols on Zeolitic Deccan Basalts.