Landforms and Landscape Evolution of the Equatorial Margin of Northeast Brazil - An Overview
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More than a simple monograph, the authors present a comprehensive geomorphic overview of a large tropical region where they show how deciphering the long-term landform evolution helps understanding the present set of landscapes and morphodynamic environments. The Equatorial margin of the Brazilian “Nordeste” displays stratigraphic landmarks whose interpretation reveals the age and nature of landforms, leading to a reconstruction of the geomorphic history by the means of combined morphostratigraphic and morphopedological approaches. Beyond the role of differential erosion related to moderate post-oceanic opening uplift, the plain and upland landscape reflects a juxtaposition of landform and soil generations related to a shallow basin inversion, the last stages of which occurred in semi-arid conditions since the Oligocene. These results throw light on old debates on models of long-term landform development in platform areas, and also help evaluating recent models of denudation and burial based on thermochronological methods.
The first and unique synthesis on the landforms and landscape evolution of Northeast Brazil
Includes original maps and more than 80 color photos and 3D images
Offers an original analysis of landforms and soils in a key area for understanding long-term to short term geomorphic evolution on the equatorial passive margin of Brazil
A necessary tool for understanding the location and interest of potential geomorphosites in northeast Brazil
Helps readers identify the distribution of hazards and risks related to landforms and geodynamics in northeast Brazil
François BÉTARD is Associate Professor in Physical Geography and Environmental Science at Paris-Diderot University, and a member of the research team CNRS UMR 8586 PRODIG. His main research interests lie in the fields of geomorphology, soil science and rock weathering, with a special focus on tropical and paleotropical environments. Involved in the study of paleolandforms and related paleoweatherings at various geological timescales, he worked extensively in South America (Northeast Brazil and Southern Patagonia), but also in France (Armorican Massif, Paris and Aquitaine Basins). Ongoing studies include applied research in the fields of conservation and valorization of geological and geomorphological heritage into protected areas (natural parks and reserves, geoparks).