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Titolo:
Palaeobiogeographic aspects of northeast Brazilian basins during the Berriasian before the break up of Gondwana
Autore:
Da Rosa, AAS; Garcia, AJV;
Indirizzi:
Univ Fed Santa Maria, Dept Geosci, BR-97105900 Santa Maria, RS, Brazil Univ Fed Santa Maria Santa Maria RS Brazil BR-97105900 BCaria, RS, Brazil UNISINOS, Sedimentary Geol Program, BR-93022000 Sao Leopoldo, RS, Brazil UNISINOS Sao Leopoldo RS Brazil BR-93022000 BC00 Sao Leopoldo, RS, Brazil
Titolo Testata:
CRETACEOUS RESEARCH
fascicolo: 2-3, volume: 21, anno: 2000,
pagine: 221 - 239
SICI:
0195-6671(200004/06)21:2-3<221:PAONBB>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Keywords:
palaeobiogeography; palaeoclimatology; Cretaceous; Berriasian; Gondwana break up; South Atlantic; Brazil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
59
Recensione:
Indirizzi per estratti:
Indirizzo: Da Rosa, AAS Univ Fed Santa Maria, Dept Geosci, Faixa Camobi Km 9, BR-97105900 Santa Maria, RS, Brazil Univ Fed Santa Maria Faixa Camobi Km 9 Santa Maria RS Brazil BR-97105900 BC
Citazione:
A.A.S. Da Rosa e A.J.V. Garcia, "Palaeobiogeographic aspects of northeast Brazilian basins during the Berriasian before the break up of Gondwana", CRETAC RES, 21(2-3), 2000, pp. 221-239

Abstract

A complete sedimentary analysis (lithofacies, palaeocurrent pattern, framework composition, biocorrelation) is presented for the northern margin of the Afro-Brazilian Depression, a large, shallow, northeast Brazilian basin that developed during the Berriasian prior to the separation of South America and Africa, the final break up of Gondwana. An understanding of the depositional systems has allowed an interpretation of the fossil record to be made in terms of palaeoclimate as the northern margin became wetter owing to a change in wind patterns. On a local scale, ponds and shallow lakes were surrounded by a rich fauna resembling present-day conditions in African savannahs. The regional behaviour of the fauna indicates migration routes that,although still not fully understood, seem to have changed from the situation that prevailed in southern Africa and South America earlier in the Mesozoic Era. (C) 2000 Academic Press.

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Documento generato il 02/07/20 alle ore 23:41:26