Nouvelles données sédimentologiques et géodynamiques sur les faciès de l’Aalénien-Bajocien inférieur du Haut Atlas marocain (Nord d’Errachidia)

Autor:	Abdellah Ait Addi
Rok vydání:	1998
Předmět:	Paleontology Grainstone Clastic rock Phanerozoic Facies Marl Ocean Engineering Sedimentary rock Mesozoic Sedimentology Ecology Evolution Behavior and Systematics Geology
Zdroj:	Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 326:193-200
ISSN:	1251-8050
DOI:	10.1016/s1251-8050(00)89035-7
Popis:	The Aalenian-Lower Bajocian facies of the Moroccan High Atlas (Northern Errachidia) are represented by allochtoneous deposits which are separated by hemipelagic marls and fine limestones. The oobiodetritic allodapic limestones show a pack-grainstone texture with reworked and worn components from remote or local origin. These facies resulted from a recurrent faulting activity which was at the origin of the individualisation of a series of ridges and depocenters within the High Atlas trough. The depocenters were filled with marls and fine limestones intersected by gravity deposits from different sourced directions. The uplifted zones (ridges) were covered only by thin beds of shallow marine carbonates. The tectonic and gravitational control of sedimentation might also have been enhanced by eustatism during the Aalenian-Lower Bajocian.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::518afe5d4a20a7bed88b9c236e62a7a1 https://doi.org/10.1016/s1251-8050(00)89035-7 Zobrazit plný text záznamu