... presented taxonomic lists of fossils recovered, and a very good outline of the local stratigr... more ... presented taxonomic lists of fossils recovered, and a very good outline of the local stratigraphy. No supporting photos of the fossils or of the geological outcrops were published at the time. Years later, two of the important mammal specimens from Dor al-Talha were illustrated as ...
P054 DEPOSITIONAL ENVIRONMENT OF LIDAM AND NUBIAN SANSTONE Abstract 1 The sedimentary sequence in... more P054 DEPOSITIONAL ENVIRONMENT OF LIDAM AND NUBIAN SANSTONE Abstract 1 The sedimentary sequence infilling Sirt basin was initiated by Nubian Sandstone which is separated from underlying granitic by the Hercynian unconformity and the upper boundary of the sequence by another unconformity followed by an early Late Cretaceous transgressive lithofacies of Lidam Formation. The Nubian sandstone sequence penetrated in the studied well 3V1-59W are 449 ft thickness from depth10546 ft to 10995 ft) of which 106 feet gap and the upper part in is Lidam formation (Cenomnain age) which considered the reservoir for hydrocarbon in concession 59 East 3V-59 block. The
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
No individual has contributed more to the growth of knowledge about mam-malian evolution in the E... more No individual has contributed more to the growth of knowledge about mam-malian evolution in the Early Tertiary of Africa than Elwyn Simons. For45 years he has steadfastly worked the Fayum sites, and the efforts of his fieldteams have yielded an incredible richness of paleontological treasures. Refer-ring to the Egyptian sites by the monolithic term ‘‘The Fayum’’ does not dojustice to the diversity of fossil localities contained within the research area.Simons and his colleagues have developed quarries at multiple stratigraphiclevelswithintheearlyOligocene,thelateEocene,andinrecentyears,themiddleEocene (Simons, 1968; El-Kashab et al., 1983; Simons and Rasmussen, 1995;Seiffert et al., 2003, 2005, 2008; Seiffert, 2006). These localities include severalfamous vertebrate-bearing sites, but also ones that yield fossil terrestrial plants,ichnofossils,andinvertebrates(WingandTiffney,1982;Bownetal.,1982;BownandKraus,1988).HisforaysintoneighboringmarineEoceneandearlyMiocenesites have fostered...
Despite increasingly intensive paleontological sampling, Cretaceous terrestrial vertebrates from ... more Despite increasingly intensive paleontological sampling, Cretaceous terrestrial vertebrates from continental Africa remain relatively poorly known, frustrating efforts to characterize paleoecosystems in the region, as well as the paleobiogeography of the southern continents during this interval. Here we describe the partial skeleton of a large-bodied theropod dinosaur from the Early Cretaceous (early Aptian, ~125-120 Ma) of Libya. The specimen consists of associated elements (two incomplete dorsal vertebrae, a proximal caudal centrum, a partial proximal caudal neural arch, the distal right femur, and the mostly complete right tibia) and is referable to the widespread ceratosaurian clade Abelisauroidea. The discovery adds to the growing record of abelisauroids from mainland Africa, and firmly establishes the presence of the clade on the continent prior to its final separation from South America. Indeed, the age of the Libyan theropod predates or is penecontemporaneous with the accept...
This study concentrates on the deposition, diagenesis and reservoir characteristics of the Upper ... more This study concentrates on the deposition, diagenesis and reservoir characteristics of the Upper Cretaceous (Cenomanian) Lidam Formation. Core, petrography and geochemical data were studied from five wells (P3-97, N6-97, R1-97, 3V1-59E, and 3V3-59E) in the SE Sirt Basin, Libya. Although the Lidam Formation is one of the main producing subsurface carbonate reservoirs in the Sirt Basin, this work is one of the first detailed studies of the formation. During this study, ten main facies and fourteen microfacies have been identified. These facies are; (1) anhydrite, (2) dolomite (3) sandstone (4) shale, (5) stromatolitic mudstone, (6) ostracod wackestone, (7) mollusc (8) bioclastic (9) peloidal, and (10) Algal facies. These deposits are inferred to have formed in supratidal sabkhas, intertidal, restricted marine shelf lagoon and higher energy shallow shoal environments. The overall depositional setting is interpreted as inner carbonate ramp deposits. Facies variations appear to be relate...
... presented taxonomic lists of fossils recovered, and a very good outline of the local stratigr... more ... presented taxonomic lists of fossils recovered, and a very good outline of the local stratigraphy. No supporting photos of the fossils or of the geological outcrops were published at the time. Years later, two of the important mammal specimens from Dor al-Talha were illustrated as ...
P054 DEPOSITIONAL ENVIRONMENT OF LIDAM AND NUBIAN SANSTONE Abstract 1 The sedimentary sequence in... more P054 DEPOSITIONAL ENVIRONMENT OF LIDAM AND NUBIAN SANSTONE Abstract 1 The sedimentary sequence infilling Sirt basin was initiated by Nubian Sandstone which is separated from underlying granitic by the Hercynian unconformity and the upper boundary of the sequence by another unconformity followed by an early Late Cretaceous transgressive lithofacies of Lidam Formation. The Nubian sandstone sequence penetrated in the studied well 3V1-59W are 449 ft thickness from depth10546 ft to 10995 ft) of which 106 feet gap and the upper part in is Lidam formation (Cenomnain age) which considered the reservoir for hydrocarbon in concession 59 East 3V-59 block. The
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
All in-text references underlined in blue are linked to publications on ResearchGate, letting you... more All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.
No individual has contributed more to the growth of knowledge about mam-malian evolution in the E... more No individual has contributed more to the growth of knowledge about mam-malian evolution in the Early Tertiary of Africa than Elwyn Simons. For45 years he has steadfastly worked the Fayum sites, and the efforts of his fieldteams have yielded an incredible richness of paleontological treasures. Refer-ring to the Egyptian sites by the monolithic term ‘‘The Fayum’’ does not dojustice to the diversity of fossil localities contained within the research area.Simons and his colleagues have developed quarries at multiple stratigraphiclevelswithintheearlyOligocene,thelateEocene,andinrecentyears,themiddleEocene (Simons, 1968; El-Kashab et al., 1983; Simons and Rasmussen, 1995;Seiffert et al., 2003, 2005, 2008; Seiffert, 2006). These localities include severalfamous vertebrate-bearing sites, but also ones that yield fossil terrestrial plants,ichnofossils,andinvertebrates(WingandTiffney,1982;Bownetal.,1982;BownandKraus,1988).HisforaysintoneighboringmarineEoceneandearlyMiocenesites have fostered...
Despite increasingly intensive paleontological sampling, Cretaceous terrestrial vertebrates from ... more Despite increasingly intensive paleontological sampling, Cretaceous terrestrial vertebrates from continental Africa remain relatively poorly known, frustrating efforts to characterize paleoecosystems in the region, as well as the paleobiogeography of the southern continents during this interval. Here we describe the partial skeleton of a large-bodied theropod dinosaur from the Early Cretaceous (early Aptian, ~125-120 Ma) of Libya. The specimen consists of associated elements (two incomplete dorsal vertebrae, a proximal caudal centrum, a partial proximal caudal neural arch, the distal right femur, and the mostly complete right tibia) and is referable to the widespread ceratosaurian clade Abelisauroidea. The discovery adds to the growing record of abelisauroids from mainland Africa, and firmly establishes the presence of the clade on the continent prior to its final separation from South America. Indeed, the age of the Libyan theropod predates or is penecontemporaneous with the accept...
This study concentrates on the deposition, diagenesis and reservoir characteristics of the Upper ... more This study concentrates on the deposition, diagenesis and reservoir characteristics of the Upper Cretaceous (Cenomanian) Lidam Formation. Core, petrography and geochemical data were studied from five wells (P3-97, N6-97, R1-97, 3V1-59E, and 3V3-59E) in the SE Sirt Basin, Libya. Although the Lidam Formation is one of the main producing subsurface carbonate reservoirs in the Sirt Basin, this work is one of the first detailed studies of the formation. During this study, ten main facies and fourteen microfacies have been identified. These facies are; (1) anhydrite, (2) dolomite (3) sandstone (4) shale, (5) stromatolitic mudstone, (6) ostracod wackestone, (7) mollusc (8) bioclastic (9) peloidal, and (10) Algal facies. These deposits are inferred to have formed in supratidal sabkhas, intertidal, restricted marine shelf lagoon and higher energy shallow shoal environments. The overall depositional setting is interpreted as inner carbonate ramp deposits. Facies variations appear to be relate...
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