Anzeige
Erschienen in:
2006 | OriginalPaper | Buchkapitel
Regional Structures and Geodynamic Evolution of North Greenwich (Fort Williams Point) and Dee Islands, South Shetland Islands
verfasst von : Jean Francois Dumont, Essy Santana, Francisco Hervé, Carlos Zapata
Erschienen in: Antarctica
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Morphological and structural studies of the Fort Williams Point area (Greenwich and Dee Islands) reveal two regional trends, NE-SW and NW-SE. Detailed field observations show that the NWSE structural direction is associated with dykes and fractures resulting from a NW-SE shortening. This shortening is interpreted as related to active basaltic volcanism during the Mesozoic “Andean” history of the area. The NE-SW structural trend is associated with NE-SW trending sinistral faults post-dating the Cretaceous volcanic units. Kinematic analysis shows a roughly N-S trending shortening. This event is interpreted as related to the opening of the Bransfield Basin located to the south-east.