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| Sutherland, Rupert; Collot, Julien; Lafoy, Yves; Logan, Graham A.; Hackney, Ron; Stagpoole, Vaughan; Uruski, Chris; Hashimoto, Takehiko; Higgins, Karen; Herzer, Richard H.; Wood, Ray; Mortimer, Nick; Rollet, Nadege. |
| We use seismic reflection and rock sample data to propose that the first-order physiography of New Caledonia Trough and Norfolk Ridge formed in Eocene and Oligocene time and was associated with the onset of subduction and back-arc spreading at the Australia-Pacific plate boundary. Our tectonic model involves an initial Cretaceous rift that is strongly modified by Cenozoic subduction initiation. Hence, we are able to explain (1) complex sedimentary basins of inferred Mesozoic age; (2) a prominent unconformity and onlap surface of middle Eocene to early Miocene age at the base of flat-lying sediments beneath the axis of New Caledonia Trough; (3) gently dipping, variable thickness, and locally deformed Late Cretaceous strata along the margins of the trough;... |
| Tipo: Text |
Palavras-chave: Norfolk ridge system; Back arc extension; New zealand region; South fiji basin; Sw pacific; Northland plateau; Tasman sea; Seismic stratigraphy; Geodynamic ecolution; Tectonic evolution. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00001/11271/9283.pdf |
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| Ribeiro,Alexandre C.; Jacob,Rodrigo M.; Silva,Ronnayana R. S. R.; Lima,Flávio C. T.; Ferreira,Daniela C.; Ferreira,Katiane M.; Mariguela,Tatiane C.; Pereira,Luiz H. G.; Oliveira,Claudio. |
| The analysis of the distribution patterns presented by examples of freshwater fishes restricted to headwater habitat: the anostomid Leporinus octomaculatus, the characins Jubiaba acanthogaster, Oligosarcus perdido, Moenkhausia cosmops, Knodus chapadae, Planaltina sp., the loricariid Hypostomus cochliodon, and the auchenipterid Centromochlus sp. provided evidences of a relatively recent shared history between the highlands of the upper rio Paraguay and adjoining upland drainage basins. Restricted to headwater of the uplands in the upper rio Paraguay and adjoining basins, these species provide biological evidence of the former extension of the central Brazilian plateau before the origin of the Pantanal Wetland. Disjunction took place due to an ecological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Brazilian highlands; Historical biogeography; Paleodrainage; Tectonic evolution. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200319 |
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