TECTONIC CONTROL ON THE COASTAL ZONE GEOMORPHOLOGY OF THE NORTHEASTERN PARÁ STATE

PEDRO WALFIR MARTINS E SOUZA FILHO
2000 Revista Brasileira de Geociências  
Based on the integration of geomorphologic, geophysical and structural data it was possible to characterize the large-scale distribution of the Quaternary sedimentary environments on the northeastern Para coastal zone. Two geomorphological sectors are observed in the study area: sector 1, between Marajo and Pirabas Bay, presents a narrow, no more than 2 km wide coastal zone, developed over the Pard platform, and seems to be a very stable area. In sector 2, from Pirabas Bay eastward, the coastal
more » ... stward, the coastal zone becomes broader, almost 30 km wide, from inactive coastal cliffs to the shoreline. The evolution of this sector is related to the Bragança-Viseu coastal basin, which is controlled by normal faults that reach the present coastal zone. Therefore, the northeastern Para coastal zone presents a stable coast associated to the Para platform, and a submerging coast related to the Braganfa-Viseu coastal basin.
doi:10.25249/0375-7536.2000303527530 fatcat:475hcjtb4jeplacr7236uwswsm