About This Item
This article has been peer-reviewed and accepted for publication in a future issue of the AAPG Bulletin. This abstract and associated PDF document are based on the authors' accepted "as is" manuscript.
Editorial Policy for Ahead of Print
Cite This Item
Display Citation
Share This Item
Visit Publisher's Website
Ahead of Print Abstract
DOI:10.1306/03222423009
An integrated correlation from platform to basin: Implications for understanding the Ediacaran succession of Oman
Irene Gomez-Perez1* , Kristin Bergmann2 , and Hussam Al Rawahi1
1 Petroleum Development Oman Exploration Directorate, Muscat, Oman
2 Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, USA
* Present affiliation: Independent Consultant, Muscat, Oman
Ahead of Print Abstract
Precambrian successions that have the spatial resolution to illustrate the transition from proximal shallow marine environments to deeper water, basinal environments through time are rare. Here we present a multidisciplinary study of the pre-salt Precambrian succession of Oman, both in cores and in outcrops, and provide a new correlation for the surface type sections to the subsurface. The ~2000 m-thick proximal, shallow marine Nafun-base Ara Groups Ediacaran type section (Huqf outcrops, central Oman) is correlated to new, near continuous cores of the ~800-1000 m-thick basinal succession in the subsurface of south Oman. We have used sedimentology, sequence stratigraphy, well logs, and carbon isotope chemostratigraphy for correlation, and built new depositional models and paleofacies maps. Our updated paleofacies maps support Ediacaran Nafun deposition controlled by regional thermal subsidence along a passive margin on the eastern side of the Mozambique Ocean. Progressively restricted marine conditions in the latest Ediacaran to Early Cambrian led to Ara Group evaporitic deposition in a syntectonic convergent margin setting. Shallow water carbonate deposits of the Khufai and Buah formations in NE Oman, and in Birba Formation carbonates on tectonically controlled highs across Oman retain porosity in many instances. The most organic-rich rocks are found in basinal deposits of the Masirah Bay, Khufai, Buah and Birba Formations in SW and W Oman while the Shuram Formation is notably organic poor. Our results add insights into source and reservoir rock distribution, and late Precambrian stratigraphy, paleogeography, and tectonic setting in Oman with global relevance.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
Watermarked PDF Document: $14 |
Watermarked Document
A Watermarked Document is branded with the name of the original licensed customer to discourage unauthorized users from sharing the document outside the user's organization. The PDF is no longer restricted to one machine, but can be circulated to others in the same company or department. A Watermarked Document also can be printed for hard copy distribution internally but is not authorized for outside distribution nor posting on the internet. Users will not be able to cut-and-paste text or images from one document to another.
|
Open PDF Document: $24 |
Open Document
An Open Document is a fully functional PDF that can be circulated (a digital copy or hard-copy printed documents) outside the purchasing organization. Purchase of an Open Document does NOT constitute license for republication in any form, nor does it allow web posting without prior written permission from AAPG/Datapages
([email protected]).
|
AAPG Member?
Please login with your Member username and password.
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].