Overslaan en naar de inhoud gaan
Publicaties | Personen | Instituten | Projecten
[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina

Fluid flow reconstruction in hanging and footwall carbonates: compartmentalization by Cenozoic reverse faulting in the Northern Oman Mountains (UAE)
Breesch, L.; Swennen, R.; Vincent, B. (2009). Fluid flow reconstruction in hanging and footwall carbonates: compartmentalization by Cenozoic reverse faulting in the Northern Oman Mountains (UAE). Mar. Pet. Geol. 26(1): 113-128. https://dx.doi.org/10.1016/j.marpetgeo.2007.10.004
In: Marine and Petroleum Geology. Elsevier: Guildford. ISSN 0264-8172; e-ISSN 1873-4073, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoord
    Marien/Kust
Author keywords
    Reverse fault; Veins; Diagenesis; Fluid flown; Compartmentalization

Auteurs  Top 
  • Breesch, L., meer
  • Swennen, R., meer
  • Vincent, B.

Abstract
    In this paper. the diagenesis from either side of a major Cenozoic reverse fault in the Northern Oman Mountains is documented. Detailed petrographical and geochemical analysis of calcite-filled fractures in carbonate strata of Late Triassic and Early Cretaceous age in the hanging wall and footwall in Wadi Ghalilah reflect a different diagenetic history. In both hanging wall and footwall most of the fractures are pre-burial, extensional in origin, formed by a crack-seal mechanism, and the calcite vein infill has a host-rock buffered signature. In the hanging wall, the fluid responsible for calcite precipitation of these extensional fractures was a marine fluid at 60 degrees C. These veins predate deep burial and contractional tectonic deformation and consequently do not provide any information about syntectonic fluid flow. Neither do the pre-burial extension fractures in the footwall which are also host-rock buffered. The fractures postdating the tectonic stylolitization in the footwall, by contrast. show evidence of syntectonic migration of saline formation waters at temperatures between 80 and 160 degrees C during contractional deformation. These fluids probably were sourced from the Subsurface via the reverse fault. which acted as a fluid conduit. At the same time, however, this fault functioned as a permeability barrier towards the hanging wall. since no evidence of syntectonic fluid flow is present here. In this way compartmentalization of the hanging wall and footwall block was realized.

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs