ISSN:
1437-3262
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Geologie und Paläontologie
Notizen:
Abstract Eastern Venezuela is divided into three geologic-geographic provinces: The Guayana shield in the south; the Eastern Venezuelan basin in the central part; and the mountains of the Serranía del Interior and Cordillera de la Costa (Caribbean Cordillera) in the northern part. The stratigraphy and geological history are discussed, as reflected by rocks of presumably pre-Cambrian, ? Triassic-Jurassic, Cretaceous, Tertiary and Quaternary ages. From the Cretaceous onward, Eastern Venezuela north of the Guayana shield and east of the El BaÚl swell, forms part of a geosyncline, the axis of which shifted southward during its history. The position of this axis governed deposition and character of the sediments, which become more marine from south to north and from west to east. Orogenic and epeirogenic movements, particularly during Miocene and Pliocene time, transformed the Eastern Venezuelan sedimentary basin into two structural basins, namely the Maturín basin on the east and the Guárico basin on the west.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02296861
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