Rock Art Conservation and Geotourism: A practical example from Foum Chenna engravings site, Morocco

The rock engravings, the subject of this article, are artistic representations made by people from cultural communities who no longer exist. The rock art was a way of expressing their thoughts, culture and beliefs, before the invention of writing. The engravings represent an archive of an ancient civilization which developed over thousands of years throughout North Africa, from the Atlantic to Egypt and from the Atlas Mountains to the Sahel. Morocco has more than 300 listed rock art sites, scattered throughout the country. Foum Chenna is a major site in the Anti-Atlas Mountains of southern Morocco. The engravings were predominantly made by pecking out images of human figures, animals and patterns, and the area today is the center of interest for the recently-formed Association of Rock Art Heritage of Southern Morocco, based in Zagora. Foum Chenna is a place of primary importance with more than 800 schematic engravings made using the pecked technique, a characteristic of this period. The majority of engravings which depict riders associated with zoomorphic and anthropomorphic representations, also, importantly, the numerous rock inscriptions recounting a scriptural tradition and reflecting the historical beginnings of Libyan writing, were today revitalized to transcribe the Tamazight language. The need to study and protect this heritage should not be limited to the preserve of just a few specialists. Knowledge of it can be used, with care, for sustainable human development. The rock art and other featuresmay make the region worthy of international recognition by UNESCO. In this paper, we look at Foum Chenna site from the perspective of geotourism and importance of the site for geoeducation, and the value of Foum Chenna site as geosite. Besides, soils, considered as some of the extraordinary manifestations of the culture of the Foum Chenna, are of huge scientific importance

The Missing Link in the Genesis of the Lower Paleozoic Copper Deposits of the Anti-Atlas (Morocco): The Late Triassic Central Atlantic Magmatic Province Event

Copper mineralization in the Lower Paleozoic sedimentary cover of the Anti-Atlas (Morocco) is continually being revised not only to improve its mining capacity, but also to determine its origin, which remains a matter of debate. As evidenced by the various models proposed, the related research is fragmented, localized, and confusing. The origin of the Anti-Atlas Lower Paleozoic copper mineralization is shared between synergistic and epigenetic processes or a superposition of the two processes. Based on new tectono-magmatic data and a reinterpretation of the ore structural arrangement, we propose a link between the last concentration of copper deposits and the Late Triassic–Early Liassic CAMP (Central Atlantic Magmatic Province) tectono-thermal event, as evidenced by the significant concentration of copper mineralization in the three NE–SW corridors affected by extensional faults, some of which are filled with dolerite CAMP magma. The heat flow generated by the mafic dykes within these reactivated corridors causes mineralized fluids to up well into the sedimentary layers, depositing material rich in juvenile or leached copper, or even a mixture of the two. In some cases, these fluids are trapped by fracture systems that accompany passive folds initiated on normal faults. In other cases, these fluids can infiltrate bedding planes, and even karst caves, formed during carbonate exhumation. Notably, extensive NE–SW faults systematically cover the early Hercynian structures, suggesting that they belong to a post-Hercynian extensional episode. During the Late Triassic, the global fragmentation of the Pangaea supercontinent was manifested by the stretching of the continental crust at the margin of northwest Africa, with the simultaneous opening of the Central Atlantic Ocean and emplacement of CAMP magmatism. This last and often overlooked tectonothermal event must be considered in the remobilization and reconcentration of copper mineralization and other mineralization in Morocco

The Cretaceous marine onlap on Palaeozoic deposits (Smara–Lâayoune Basin, South Morocco). Comparison with neighbouring regions

International audienceThe Cretaceous marine transgression proceeded through successive steps from the Albian to the Turonian (dated with ammonites). The onlapping wedge begins with coastal transgressiveeregressive short-term sequences on massive, probably fluvial sandstones to be correlated with the very thick continental Lower Cretaceous succession found in the Puerto Cansado well in the Tarfaya sub-basin to the north. A second step, of probable Cenomanian age, reached the Palaeozoic basement. A third, more pronounced step occurred during the earliest Turonian with platy laminated limestone overlain by marlstone bearing pyritized ammonites. At early Turonian peak transgression, a marine connection was possibly established between the Atlantic and the Tethyan margins, between the Anti-Atlas and the Reguibat Shield. From large-scale correlation integrating what occurred along the southwestern shoulder of the Atlas rift, the South Moroccan Atlantic margin may have undergone a short-lived tectonic uplift around the Cenomanian eTuronian boundary