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BIBTEX RIS

GEOLOGIA DO QUATERNÁRIO COSTEIRO DO ESTADO DE PERNAMBUCO

1990; Sociedade Brasileira de Geologia; Volume: 20; Issue: 1 Linguagem: Inglês

10.25249/0375-7536.1990208215

ISSN

2177-4382

Autores

José Maria Landim Domínguez, Abı́lio Carlos da Silva Pinto Bittencourt, Zelinda M.A.N. Leão, ANTÔNIO EXPEDITO GOMES DE AZEVEDO,

Tópico(s)

Geological formations and processes

Resumo

BRAZIL.This paper presents a geological map of Quaternary deposits occuring along the coast of the State of Pernambuco.These deposits comprise: 1. two sets of beach-ridge terraces of Pleistocene (120,000 years B.P.) and Holocene (5,000 years B.P.) age; 2. paleolagoonal deposits (5,140-6,030 years B.P.); 3. sandstone and coralgal reefs with ages spanning from 1,830 to 5,170 years B.P.; and 4. alluvial, freshwater swamp, and mangrove swamp deposits of Holocene age.Integration of this mapping with the known sea-level history for the east coast of Brazil suggests that previously published evolutionary schemes proposed for the coast of the states of Alagoas, Sergipe, Bahia, Rio de Janeiro, and São Paulo are also valid for the coast of the State of Pernambuco.This evolutionary history shows that sedimentation along the coastal zone was controlled fundamentally by the Quaternary sea-level changes.Eighteen new radiocarbon dates of paleolagoonal deposits, sandstone reefs, coral, coralline algae, and vermetid gastropod incrustations are also reported herein.

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