Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Neotectonic influence on tropical rivers of southwestern Amazon during thelate quaternary: the Moa and Ipixuna river basins, Brazil
Autore:
Latrubesse, EM; Rancy, A;
Indirizzi:
Fed Univ Goias, Inst Social Environm Studies, IESA, BR-74001970 Goiania, Go, Brazil Fed Univ Goias Goiania Go Brazil BR-74001970 BC001970 Goiania, Go, Brazil Fed Univ Acre, Alceu Rancy, Lab Paleontol, Rio Branco, AC, Brazil Fed UnivAcre Rio Branco AC Brazil Lab Paleontol, Rio Branco, AC, Brazil
Titolo Testata:
QUATERNARY INTERNATIONAL
, volume: 72, anno: 2000,
pagine: 67 - 72
SICI:
1040-6182(2000)72:<67:NIOTRO>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
ECUADOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Latrubesse, EM Fed Univ Goias, Inst Social Environm Studies, IESA, Campus 2, BR-74001970 Goiania, Go, Brazil Fed Univ Goias Campus 2 Goiania Go Brazil BR-74001970 BCzil
Citazione:
E.M. Latrubesse e A. Rancy, "Neotectonic influence on tropical rivers of southwestern Amazon during thelate quaternary: the Moa and Ipixuna river basins, Brazil", QUATERN INT, 72, 2000, pp. 67-72

Abstract

Neotectonic influence has conditioned the development of the Moa and Ipixuna fluvial belts in the southwestern Brazilian Amazon region. The area underwent a compressive tectonics with reverse N-S fault dipping to the west that formed an "en echelon system" system from west to east, from the Serras do Divisor ranges to the Jurua river. As a response to stress, subsiding blocks with NW-SE trends were developed. The E-W to N55 degrees W topographictrends could represent transcurrent dextral transtensional faults. Width of alluvial belts increases along the sequence of "en echelon system" blocks. Correlated with the increase of width, the quantity of channels formed byavulsion increases as well. The Moa and Ipixuna alluvial belts, respectively reaching ca. 9 and 7 km maximum width, are "abnormally" wide because they developed in subsiding blocks stretched in a NW-SE trend. Fluvial dynamics was dominated by avulsion in the subsiding blocks during the late Pleistocene and, probably, during part of the Holocene. (C) 2000 Elsevier Science Ltd and INQUA. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 16:13:55