Abstract
Cores cut in shallow-marine Lower and middle Cretaceous carbonates in the Al Ali No. 2 well, Umm al Qaiwain, United Arab Emirates, display a five-stage sequence of calcite cementation, fracturing, and stylolitization. These stages are correlated with the tectonic history of the northern Oman orogeny. Occurrence of fluorescent hydrocarbon fluid inclusions is restricted to stage 2 and stage 3 fracture-filling calcites that are crosscut by stylolites. Stylolite formation during rapid burial beneath abyssal Campanian foredeep sediments restricts hydrocarbon migration to post–mid-Cenomanian and pre–mid-Campanian time.
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