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GeoRef Categories
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Availability
Tanezzuft Formation
A unique new genus of Acritarcha (organic-walled microphytoplankton) from the Tanezzuft Formation (Silurian) of Libya Free
Newly recognized glacial features within the Tanezzuft Formation of Jabal E... Available to Purchase
Shelly fossils from the Tanezzuft Formation in Jabal Eghei, western Kufra B... Available to Purchase
Did lingering ice sheets moderate anoxia in the Early Palaeozoic of Libya? Available to Purchase
Normalograptus kufraensis , a new species of graptolite from the western margin of the Kufra Basin, Libya Available to Purchase
Measured section straddling the Mamuniyat and Tanezzuft formations and the ... Available to Purchase
Chronostratigraphy of the studied succession on Jabal Eghei, where four str... Available to Purchase
Basal sandy carbonate facies association. ( a ) Relationship between the to... Available to Purchase
Model illustrating the envisaged environmental setting of Jabal Eghei durin... Available to Purchase
Photomicrographs of Normalograptus kufraensis sp. nov. from the ... Available to Purchase
Photomicrograph and camera lucida drawing of the late Hirnantian or rhuddan... Available to Purchase
Silurian palynomorphs from the Tanezzuft and Acacus formations, Tripolitania, North Africa Available to Purchase
Lithostratigraphy and spectral gamma-ray data for section Ghat-3, located 1... Open Access
Camera lucida drawings of Normalograptus kufraensis sp. nov. from ... Available to Purchase
Identification of early Llandovery (Silurian) anoxic palaeo-depressions at the western margin of the Murzuq Basin (southwest Libya), based on gamma-ray spectrometry in surface exposures Open Access
Ordovician-Silurian contact exposed in section Ghat-6 (a) and Ghat-7 (b) (s... Open Access
Total gamma-ray log of well E1-NC174. Latest Ordovician-early Silurian Tane... Open Access
Petroleum generation and migration in the Ghadames Basin, north Africa: A two-dimensional basin-modeling study Available to Purchase
Satellite image of sections Ghat-5 to 8 in the northern and southern parts ... Open Access
Biostratigraphy, chemostratigraphy and thermal maturity of the A1-NC198 exploration well in the Kufra Basin, SE Libya Available to Purchase
Abstract The A1-NC198 exploration well was drilled in the Kufra Basin in 2007 by RWE Dea and represented only the third well in a large, 400 000 km 2 frontier basin. Despite being dry and lacking any hydrocarbon shows, the well provides important data to improve the understanding of the regional petroleum play. In the 1980s and 1990s the basin's prospectivity was questioned largely because of supposed (1) lack of structuration, (2) lack of source rock and (3) thermal immaturity at Silurian level. Following a series of academic and industry studies over the past 10 years, these assertions can no longer be upheld. The analysis of available seismic has proven the existence of Murzuq-style fault blocks as well as late Ordovician glacial erosional relict buried hills, potentially forming suitable structural and stratigraphic traps. The presence of hot shale in the Kufra Basin is evidenced by typical seismic onlaps of strong amplitude reflectors at base Silurian levels, shallow drilling results and outcrop spectral gamma-ray evidence. A spore colouration study of A1-NC198 cuttings indicates a deep oil window maturity for the Silurian, implying potential oil generation in the basin if suitable Silurian source rocks exist. The stratigraphy of the A1-NC198 succession was analysed by means of biostratigraphy and chemostratigraphy, which form the basis for improved well correlations within the basin.