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8 results for “drainage history”
Fig. 11 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 11. (a) The main axes of Quaternary tectonics in Brazil (gray lines) (according to Saadi, 1993) and areas of coincident distributional rages of several species in both isolated coastal rivers and adjacent drainages. (b) The northeastern margin of Brazil, including the Parnaíba, São Francisco and adjacent coastal rivers (c) The Southern most Brazil, encompassing the Uruguay and surroundings coastal rivers as well as the headwaters of the Paranapanema, Ivaí, Iguacú and Ribeira de Iguape. (d) The area encompassed by the CRSB, in southeastern Brazil, including the coastal rivers and the adjacent upper Tietê and upper Iguaçu.
Fig. 4 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 4. Geographic location of the Brazilian Atlantic continental margin and of the coastal drainages of eastern Brazil (shaded area) and areas showed in figures 6, 7 and 8 (modified from Hearn et al., 2000).
Fig. 9 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 9. Cladograms of taxa and areas showing the sister-group relationships included in Pattern A. a) Catfishes of the family Trichomycteridae. b) Catfishes of the family Doradidae. The degree of inclusiveness of this pattern suggests the most ancient cladogenetic event that is still recognized in respect to the ichthyofauna of the Brazilian coastal rivers.
Fig. 7 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 7. (a) Map of northeastern segment of Southeastern Brazilian coast showing the complex system of Pre-Cambrian and Mesozoic continental rifts controlling drainage and topography. (b) Detail of the straight course of the rio Paraíba do Sul Rift Valley produced from a digital elevation model by radar interferometry (NASA, The Shuttle Radar Topography Mission).
Fig. 3 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 3. Rivers and uplifts of Atlantic South America. A) break-up uplifts (megadomes) and associated principal rifts. Megadomes: Guyana/Guinea (1), NE Brazil/Niger (2), Mantiqueira/Angola (3), Uruguay/SW Africa (4), Somuncurá (5) and Deseado (6). Break-up rifts: Tacutu (I), Foz do Amazonas (II), Reconcavo Tucano-Jatobá (III) and Taubaté (IV). B) detail of the uplift from the Southeastern Brazil (from Cox, 1989 and Potter, 1997).
Fig. 2 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 2. The South American Plate and its major tectono-sedimentary domains (from Milani & Thomaz-Filho, 2000).
Fig. 5 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 5. Schematic diagram of origin and erosional SE-NW retreat of Serra do Mar coastal range in region between inland Paraná basin, and the Santos basin, coast of SE Brazil. 1- Eroded Senonian uplift, allowing deposition in both Santos and Paraná basins. Alkaline volcanism (A); Santos Fault (F). 2- Development of the Japi Erosional Surface at the end of Senonian. 3- Paleocene deformation of the Japi Surface (isostatic adjustment). Serra do Mar (SM) is generated at Santos Fault (F), system of continental rifts originated and continental platform formed in coast (P). 4- Erosional retreat (R) of Serra do Mar toward present position. The approximate position of Depressão Periférica is indicated (DP). Alkaline intrusions represent islands. Conventions: 1. Santos formation deposits, 2. Phanerozoic cover beneath the Serra Geral basalt, 3. Serra Geral Formation, 4. Alkaline bodies, 5. Bauru Group, 6. Faults (fromAlmeida & Carneiro, 1998).
Fig. 1 in Tectonic history and the biogeography of the freshwater fishes from the coastal drainages of eastern Brazil: an example of faunal evolution associated with a divergent continental margin
Fig. 1. Crustal provinces of South America. I – South American Platform; II – Patagonian massif; III – Andean orogenic belt; IV – foreland basins; AM = Amazon craton; SL = São Luis craton; SF = São Francisco craton; LA = Luiz Alves craton; RP = Rio de la Plata craton; B = Borborema province; T = Tocantins province; M = Mantiqueira province; DF = Dom Feliciano belt. (Modified from Cordani et al., 2000 and Cordani & Sato, 1999).
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