The intracratonic Ogaden Basin, which covers one‐third of the Democratic Republic of Ethiopia, developed in response to a tri‐radial rift system which was active during Late Palaeozoic to Mesozoic times. Thick Permian to Cretaceous sequences, which principally occur in the SW and central parts of the basin, have proved petroleum potential. Reservoir rocks are mainly Permian to Lower Jurassic sandstones (the Calub and Adigrat Formations), and Callovian limestones (the Upper Hamanlei Formation). Source rocks are organic‐rich Permian, Lower Jurassic and Callovian‐Oxfordian lacustrine and marine shales. This paper reviews the petroleum geology of the Ogaden Basin and assesses potential exploration targets. Successful exploration can be expected in view of the recent discovery of the Calub gas and gas/condensate field, and the occurrence of significant shows in the centre of the basin together with seeps along the margin.

No abstract

No abstract

No abstract

It is not a matter of public record whether this was an open or closed meeting, or what credentials were required for admission into the charmed circle. Was Hamlin Garland challenged on the grounds of birth in Wisconsin, or on the grounds that he had spent only thirteen years of his life in Iowa? Was Octave Thanet challenged on the ground of birth in Andover, Massachusetts, even though she was brought to Davenport at the age of six, grew up with the town, and always counted it her home? These questions, and others soon to be raised, are not altogether idle musing. Not the least important consideration for one attempting an essay on a state's cultural history is the setting of criteria for determining state citizenship. What, then, is an lowan? Various scholars have come up with varying answers, implied or