LITHO-STRUCTURAL AND GEOMORPHOLOGICAL INFLUENCES ON THE SPATIAL DISTRIBUTION OF SMALL WETLANDS: CASESIN THE SOUTHERN MANTIQUEIRA
DOI:
https://doi.org/10.36026/8netgn48Keywords:
wetlands, drainage rearrangement, neotectonicsAbstract
The three-dimensional flows of matter and energy throughout the landscape are conditioned by morphology, lithology and geological structure, generating biogeochemical processes that culminate in the formation of wetlands, through water and sediments accumulation. However, neotectonic also influences hydrogeomorphological processes, reconfiguring the drainage network and relief shaping. In this perspective, the objective was to analyze the spatial distribution of wetlands in the Yung Stream watershed, based on the geological and geomorphological characteristics of the study area. The results show adjustments on fluvial drainage related to neotectonic evidence and influence the occurrence of wetlands. However, there was no significant influence of lithology on the concentration of wetlands, despite the notable physiographic differences between wetlands located in orthogneisses and orthogranulites. It is concluded that the distribution of wetlands is related to the geometry of the fluvial network, which is conditioned by the morphological characteristics and altimetric disparities between the lithological units. Thus, one can observe the formation of wetlands with varying hydrogeomorphological characteristics.
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