Changes

The structural character of southern Libya was mainly developed during the Pan-African event. The structures of north Libya have been attributed to the Tethyan extension and Alpine tectonic movements.

The structural character of southern Libya was mainly developed during the Pan-African event. The structures of north Libya have been attributed to the Tethyan extension and Alpine tectonic movements.

The Libyan [[sedimentary]] section represents successive marine [[transgression]]s and regressions that began in the early Paleozoic. These resulted in a series of mixed layers of Paleozoic marine and non-marine sediments ([[shale]] and [[sandstone]]) that accumulated in the southern basins. In the Mesozoic, shallow-marine [[carbonate]]s accumulated over various platforms formed in the northern basins.

The Libyan sedimentary section represents successive marine [[transgression]]s and regressions that began in the early Paleozoic. These resulted in a series of mixed layers of Paleozoic marine and non-marine sediments ([[shale]] and [[sandstone]]) that accumulated in the southern basins. In the Mesozoic, shallow-marine [[carbonate]]s accumulated over various platforms formed in the northern basins.

Four major tectonic features were produced by the Pan-African event in Libya: the western Tihemboka Uplift, the west-central Tripoli-Tibesti Uplift, the central Haruj Uplift, and the eastern Calanscio-Awaynat Uplift ([[:file:M106Ch04Fig2A.jpg|Figure 2A]]). From west to east, these ridge-like structures are separated by the Murzuq-Jadu, Dur Al Qussah-Uri, and Calanscio troughs ([[:file:M106Ch04Fig2A.jpg|Figure 2A]]). Cambrian to Carboniferous seas transgressed into these northwest-trending troughs from the northwest. Thus the stratigraphic section thins to the southwest; a thicker marine sequence accumulated north of Libya, whereas farther south, continental siliciclastic sediments prevailed. Some continental deposits reported to the north probably accumulated during marine regressions.<ref name=Zegaar_1986>Zegaar, N., 1986, Stratigraphic and tectonic evolution of the desert of northwestern Egypt and northeastern Libya, unpublished MSC thesis, University of South Carolina.</ref>

Four major tectonic features were produced by the Pan-African event in Libya: the western Tihemboka Uplift, the west-central Tripoli-Tibesti Uplift, the central Haruj Uplift, and the eastern Calanscio-Awaynat Uplift ([[:file:M106Ch04Fig2A.jpg|Figure 2A]]). From west to east, these ridge-like structures are separated by the Murzuq-Jadu, Dur Al Qussah-Uri, and Calanscio troughs ([[:file:M106Ch04Fig2A.jpg|Figure 2A]]). Cambrian to Carboniferous seas transgressed into these northwest-trending troughs from the northwest. Thus the stratigraphic section thins to the southwest; a thicker marine sequence accumulated north of Libya, whereas farther south, continental siliciclastic sediments prevailed. Some continental deposits reported to the north probably accumulated during marine regressions.<ref name=Zegaar_1986>Zegaar, N., 1986, Stratigraphic and tectonic evolution of the desert of northwestern Egypt and northeastern Libya, unpublished MSC thesis, University of South Carolina.</ref>