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Titolo:
Orientation of absolute African plate motion revealed by tomomorphometric analysis of the Ethiopian dome
Autore:
Collet, B; Parrot, JF; Taud, H;
Indirizzi:
Dept Geotecton URA 17 59, F-75252 Paris 05, France Dept Geotecton URA 17 59 Paris France 05 17 59, F-75252 Paris 05, France Univ Nacl Autonoma Mexico, Inst Geog, Mexico City 04510, DF, Mexico Univ Nacl Autonoma Mexico Mexico City DF Mexico 04510 y 04510, DF, Mexico
Titolo Testata:
GEOLOGY
fascicolo: 12, volume: 28, anno: 2000,
pagine: 1147 - 1149
SICI:
0091-7613(200012)28:12<1147:OOAAPM>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOTSPOT TRACKS; EAST-AFRICA; MAGMATISM; ATLANTIC; GENERATION; ARABIA; PLUME; OCEAN; GULF; ADEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Collet, B Dept Geotecton URA 17 59, Case 129,4 Pl Jussieu, F-75252 Paris 05, France Dept Geotecton URA 17 59 Case 129,4 Pl Jussieu Paris France 05
Citazione:
B. Collet et al., "Orientation of absolute African plate motion revealed by tomomorphometric analysis of the Ethiopian dome", GEOLOGY, 28(12), 2000, pp. 1147-1149

Abstract

The Ethiopian dome, comprising the Ethiopian and Yemeni Plateaus, formed as a result of the uplift of Red Sea, Gulf of Aden, and Ethiopian rift shoulders; the uplift was essentially due to a mantle-plume activity. A digital elevation model of this region before rifting, constructed by using the rotation of its constituent plates and pulling down the rift shoulders, reveals that important high areas existed before rifting. These highs are interpreted to be the result of mantle plume activity. A fast Fourier transform was used to smooth the digital elevation model prerift dome before a tomomorphometric analysis was applied to quantify the orientation of each digital elevation model horizontal slice. This procedure allowed us to determine a bearing of N30 degreesE for absolute African plate motion since the Paleogene.

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Documento generato il 04/04/20 alle ore 02:44:51