Eroded topography in Proterozoic Basement: the case of Capiá river watershed, Semi‐arid Northeastern Brazil

IF 0.5 Q4 GEOGRAPHY, PHYSICAL

Revista Brasileira de Geomorfologia Pub Date : 2022-10-01 DOI:10.20502/rbg.v23i4.2159

Genisson Panta, João Paulo da Hora Nascimento, K. A. Monteiro

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引用次数: 1

Abstract

: It is a consensus that the semi-arid depressions created in Atlantic Proterozoic Shield underwent intense denudational processes, especially during the Cenozoic. However, there are still no studies on quantifying and spatializing the fluvial incision for the Southern Sertaneja Depression, low course of the São Francisco river. Then, this study sought to quantify and spatialize the fluvial incision over the Proterozoic basement in the Capiá river basin through the integration of geoprocessing and geostatistical techniques (ordinary kriging), based on a Digital Elevation Model. Correlations were drawn between lithological resistance, basement structures and geomorphological aspects. More than half of the analyzed watershed mass has already been removed by denudational processes and the minimum bulk erosion per corresponding area is in contrast with other regions of the planet. The reconstitution of the topography allowed the delimitation of two large morphostructural compartments in the basin. Finally, apatite fission track data from studies already published in the study area were presented.

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元古代基底侵蚀地形:以半干旱巴西东北部capi河流域为例

大西洋元古代地盾形成的半干旱坳陷经历了强烈的剥蚀作用，尤其是在新生代。然而，对于奥弗朗西斯科河下游南Sertaneja凹陷的河流切口，目前还没有定量和空间化的研究。然后，在数字高程模型的基础上，通过地质处理和地质统计技术(普通克里格)的结合，对capi河流域元古代基底上的河流切口进行了量化和空间化。得出了岩性阻力、基底构造和地貌方面的相关性。所分析的流域质量的一半以上已经被剥蚀过程所侵蚀，每相应区域的最小体积侵蚀与地球上的其他区域形成对比。地形的重建使得在盆地中划分出两个大的形态构造区。最后，介绍了研究区域内已发表的磷灰石裂变径迹数据。

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来源期刊

Revista Brasileira de Geomorfologia GEOGRAPHY, PHYSICAL-

CiteScore

1.30

自引率

40.00%

发文量

审稿时长

16 weeks

期刊介绍： The Revista Brasileira de Geomorfologia are focused on research, analysis and application of knowledge for the development of models of large sets of relief; fluvial dynamics; the processes of aspects, such as erosion and mass movements and their impact; survey, assessment and recovery of degraded areas; surveys and assessments of natural resources; thematic mapping and integrated relief; environmental zoning; among other relevant aspects of the land relief on any scale. From a technical and instrumental basis for the development of these studies, studies that use instruments to the survey, the interpretation and generalization of data on various aspects of the Earth''s surface, including the forms of occupation and use (s) company (s) human (s). As well as the use and integration of methods and techniques that enable geo technical and instrumental character important in scientific production and the definition of public policies.