LES ROCHES MAGMATIQUES ET PYROCLASTIQUES DU CONGLOMERAT STRUNIEN DE L'OUED TIFLET (MESETA NORD OCCIDENTALE MAROCAINE): PETROGRAPHIE, GEOCHIMIE ET PROVENANCE

In the north boundary of the Sidi Bettache basin (northwestern morrocan Meseta), the strunian period is characterized by coarse detrital sedimentation, among them the limestone conglomerate of Tiflet river. This conglomerate is rich in magmatic pebbles varying by nature and shape. Petrographical and geochemical studies allow distinguishing eleven facies, which generally correspond to basic, including gabbros, intermediate or acids rocks. Tuffs, sulfides bearing-rocks and oxides are also identified. Age of this magmatic rocks is discussed

Geodiversity Examples of Morocco: From Inventory to Regional Geotourism Development

The soil and subsoil of Morocco are rich in geological phenomena that bear the imprint of a history which goes back in time more than 2000 million years. Very many geologically remarkable sites exposed in accessible outcrops, with good quality remained unknown to the general public and therefore deserved to be vulgarized. It is a memory to acquaint the present generations but also to preserve for future generations. In total, a rich geological heritage in many ways: Varied land- scapes, international stratotypes, various geological structures, varied rocks, mineral associations, a huge procession offossiles, remnants of oceanic crust (ophiolites) among oldests ones in the world (800 my), etc. For this geological heritage, an approach of an overall inventory is needed, both regionally and nationally, taking into account all the skills of the earth sciences. This will put the item on the natural (geological) potentialities as a lever for sustainable regional development. For this, it is necessary to implement a strategy of “geoconservation” for the preservation and as- sessment of the geological heritage. A website “lithothèque du Maroc” is under construction.info:eu-repo/semantics/publishedVersio

LES ROCHES MAGMATIQUES ET PYROCLASTIQUES DU CONGLOMERAT STRUNIEN DE L'OUED TIFLET (MESETA NORD OCCIDENTALE MAROCAINE): PETROGRAPHIE, GEOCHIMIE ET PROVENANCE

In the north boundary of the Sidi Bettache basin (northwestern morrocan Meseta), the strunian period is characterized by coarse detrital sedimentation, among them the limestone conglomerate of Tiflet river. This conglomerate is rich in magmatic pebbles varying by nature and shape. Petrographical and geochemical studies allow distinguishing eleven facies, which generally correspond to basic, including gabbros, intermediate or acids rocks. Tuffs, sulfides bearing-rocks and oxides are also identified. Age of this magmatic rocks is discussed

Les Roches Basiques Du Bas-Limousin (Massif Central Français) : Geochimie Et Implications Geodynamiques

The upper unit gneisses represent most of the Bas - Limousin. It is characterized by the intercalation of basic igneous rocks (metagabbro- and metadolerite). These are affected by regional metamorphism but primary textures are preserved. The aim of this work is to present new geochemical data, which allow characterizing the geochemical nature of these rocks and discussing their geodynamic meaning. Chemical analyzes of the major and traces elements were carried out at “Service commun des sciences de la terre de l’ Université de Nancy I”, rare earths elements were analyzed at CRPG of Nancy. The results of this geochemical study show that these basic rocks are comparable to continental tholeiitic rocks