GIS-Based Relief Compartment Mapping of Fluvio-Karst Landscape in Central Brazilian Highlands

GIS-Based Relief Compartment Mapping of Fluvio-Karst Landscape in Central Brazilian Highlands

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The present study describes the preliminary findings of a research project aiming at creating a knowledge-base for the protection of caves heritage at Rio Vermelho preservation area in the central Brazilian highlands.A GIS-based relief compartment mapping was conducted using readily available data (e.g., satellite images, geological, and cave location maps).Four resultant geomorphological domains were identified, including (i) lowlands (282 km2) with a sofia barclay sexy base-level in silicates and carbonates, (ii) the karst terrains (994 km2) which were developed in carbonates trapped by siltstone lenses, (iii) the talus (1483 km2) having colluvial and alluvial units deposited by theescarpment retreat (Urucuia Formation) and (iv) the highlands (1143.

7 km2) developed over the sandstone of the Urucuia Group.The intersection of landform and geological maps resulted in delineating two abrupt contacts, the first between lowland and karstterrains and the second between the talus and highlands that berkley power worm 100 pack formed canyon escarpment.For sustainability perspective, this study proposed two types of cave systems in the region as superior/vadose (top-bottom) that collect floods from hillslopes and deepEpigenefluvial-karst (bottom-up).