Download PDF by R. C. Selley: African Basins

By R. C. Selley

ISBN-10: 0444825711

ISBN-13: 9780444825711

Following on from the 1st 2 books within the sequence, Sedimentary Basins of the realm, which coated chinese language Sedimentary Basins (Volume 1) and South Pacific Sedimentary Basins (Volume 2), comes quantity three, on African Basins.Africa covers a bigger land region than the us, Europe, India and the ASEAN countries prepare. it's wealthy in average assets, together with oil, fuel, coal and approximately each metalliferous mineral. but Africa remains to be one of many least explored continents.This ebook brings jointly in a single quantity, concise experiences of basins formerly documented in an enormous array of diffuse literature. It additionally includes many of the first particular bills of numerous basins that have by no means ahead of been defined in such intensity. those comprise the onshore Owambo, Iullemmeden, and Sudanese rift basins, and the offshore basins of southern Africa.The contributions are by means of authors, and groups of authors, with nice wisdom and adventure of the basins that they describe.The 13 chapters are prepared in three components masking North Africa, valuable Africa and Southern Africa and the e-book is illustrated by means of maps, cross-sections, stratigraphic sections and seismic traces. each one bankruptcy features a accomplished bibliography and the e-book concludes with a subject matter index.For educational geologists discovering the geology of Africa, and for business geologists looking ordinary assets inside African sedimentary rocks, this publication is a useful resource of data.

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4) Development of post orogenic foreland basins and molass sedimentation. (5) Late orogenic and post orogenic plutonic intrusions of granites and granodiorites (656-480 Ma). It was noted that in the high mountain areas, the Nubian craton are formed of orogenic granites and develop a 30 to 40 km thick crust. Whereas the crust at the margin of the Red Sea trough is 20 km thick and consists of alkaline metasomatic granites belonging to the latest plutonic intrusions (EI-Shazly, 1977). The crustal thickness of the east Saharan craton also, exhibits similar order of magnitude from Jabal Uweinat area to the Mediterranean coast.

It is possible that they are the epidiagenetic product of intense weathering operating across a wide range of stratigraphic formations during the prolonged uplift of the Tibesti-Sirte arch (Hea, 1971). A third common lithology beneath the floor of the Sirte basin are coarse-cross-bedded sandstones. These are largely unfossiliferous. As discussed at length in Chapter 1, the Sahara is covered by a discontinuous blanket of unfossiliferous braided alluvial sands. Dates obtained from fauna in rare intervening shales show that the barren fluvial sands range in age from Precambrian to Recent.

Petrol. Explor. Soc. Libya, Tripoli, 179 PP. G. , 1975. Secondary carbonate porosity as related to early Tertiary depositional facies, Zelten Field, Libya. Bull. Am. Assoc. Petrol. , 59: 665-693. H. , 1980. Intisar "D" oil field, Libya. T. Halbouty (Editor), Oil and Gas Fields of the Decade 1968-78. Ame Assoc. Petrol. Geol. , 30: 543-564. , 1992. Raguba Field. H. A. Beaumont (Editors), Structural Traps VII. American Association of Petroleum Geologists, Tulsa, OK, pp. 267-90. T. , 1980a. Preliminary chemical data on the volcanic rocks of A1 Haruj area, Central Libya.

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African Basins by R. C. Selley

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