Echinoderm microfossil dating
Universit de Bretagne Occidentale (UBO), UMR 6538 Domaine Ocanique, 6 avenue Le Gorgeu - CS 93837, 29238 Brest Cedex 3 (France) Department of Ecology and Evolutionary Biology, The University of Kansas, 1200 Sunnyside Avenue, Lawrence, Kansas 66045 (USA) Lebanese University, Faculty of Science II, Fanar, Natural Sciences Department, Fanar - El-Matn, P. Box 26110217 (Lebanon) Lebanese University, Faculty of Science II, Fanar, Natural Sciences Department, Fanar - El-Matn, P. Box 26110217 (Lebanon) GEGENA EA 3795, UFR de Sciences exactes et naturelles, Universit de Reims, 2 esplanade Roland-Garros, 51100 Reims (France); present address: 5 rue du Moulin Rouge, 77140 Saint-Pierre-ls-Nemours (France) Instituto de Geologa, Universidad Nacional Autnoma de Mxico, Ciudad Universitaria, Coyoacn, 04510, Mxico, D. (Mexico) Published online in final form (pdf) on November 14, 2014[Editor: Robert W." is a prominent cliff, consisting mostly of Lower Cretaceous limestones that extends as linear outcrops over most of the Lebanese territory and provides geologists a remarkable reference for stratigraphic studies.The Jezzinian interval correlates with the upper part of the Kharaibian Regional Stage (also known as "Thamama II" reservoir unit in the oil industry).In turn, the Jezzinian is indirectly correlated with the Northern Tethysian Urgonian stratigraphic units where it corresponds to a rather short interval encompassing the standard Barremian - Bedoulian stage boundary.
Liban ; Crtac infrieur ; Barrmien ; Bdoulien ; Aptien auct.
Nowadays, the section is no longer available because of recent urbanization.
The micritic facies ("Mdairej") are commonly found in the upper part of most sections, above the calcarenitic facies ("Abeih").
's "revision" (1983) merely introduced new names for the old units (from base to top "Chouf Sandstone Formation", "Mdairej Formation", and "Hammana Formation").
However, he failed to give clear definitions for most of these newly re-labelled lithostratigraphic units and he even added more confusion as, for instance, he ascribed a formal name to ) is essentially facies-driven: 1) grain-dominated, shoal facies (oolitic and bioclastic wackestones and grainstones) are referred to the Abeih Formation; 2) mud-dominated, lagoonal facies (mudstones and bioclastic wackestones, with some gastropod floatstones) to the "Falaise de (1963) named it "Falaise de Mdairej" after he established its type-section in this locality.