Search Results - "Boumehdi, Ahmed"
-
1
Restitic or not? Insights from trace element content and crystal — Structure of spinels in African mantle xenoliths
Published in Lithos (01-05-2017)“…The lithospheric architecture of Africa consists of several Archean cratons and smaller cratonic fragments, stitched together and flanked by polycyclic fold…”
Get full text
Journal Article -
2
Physical volcanology and emplacement mechanism of the Central Atlantic Magmatic Province (CAMP) lava flows from the Central High Atlas, Morocco
Published in Comptes rendus. Geoscience (01-01-2020)“…The best preserved and most complete lava flow sequences of the Central Atlantic Magmatic Province (CAMP) in Morocco are exposed in the Central High Atlas and…”
Get full text
Journal Article -
3
U–Pb Zircon Geochronological and Petrologic Constraints on the Post-Collisional Variscan Volcanism of the Tiddas-Souk Es-Sebt des Aït Ikko Basin (Western Meseta, Morocco)
Published in Minerals (Basel) (01-10-2021)“…The NE–SW trending Tiddas Souk Es-Sebt des Ait Ikko (TSESDAI) basin, located at 110 km southeast of Rabat, in the region of Khmesset between the village of…”
Get full text
Journal Article -
4
Geochemistry and Geochronology of the Neoproterozoic Backarc Basin Khzama Ophiolite (Anti-Atlas Mountains, Morocco): Tectonomagmatic Implications
Published in Minerals (Basel) (01-01-2021)“…The Khzama ophiolite is a highly dismembered complex located in the Siroua inlier of the Moroccan Anti-Atlas Belt. It consists of ultramafic rocks, cumulate…”
Get full text
Journal Article -
5
Morocco, North Africa: a Dyke Swarm Bonanza
Published in Acta geologica Sinica (Beijing) (01-10-2016)“…<正>Morocco hosts a Dyke Swarm Bonanza.Remarkable mafic dyke and sill swarms(plumbing system of Large Igneous Provinces,LIPs)have been recognized in the…”
Get full text
Journal Article -
6
Refining the Stratigraphy of the Taghdout Group by Using the U-Pb Geochronology of the Taghdout Sill(Zenaga inlier, Anti-Atlas, Morocco)
Published in Acta geologica Sinica (Beijing) (01-10-2016)“…<正>The Anti-Atlas belt of southern Morocco is situated on the northern edge of the West African craton(WAC).It corresponds to a broad anticlinorium some…”
Get full text
Journal Article -
7
Evaluation of the Long-Term Contaminated Neutral Drainage CND Generation Potential of Waste Rock Piles at the Abandoned Zn-Pb Erdouz Mine (Occidental High Atlas, Morocco)
Published in Mining, metallurgy & exploration (01-04-2022)“…Pollution of soils, surface, and groundwater can be of natural or anthropogenic origin. Mine drainage is one of the sources of metal emissions into the…”
Get full text
Journal Article -
8
A 571 million‐year‐old alkaline volcanic lake photosynthesizing microbial community, the Anti‐atlas, Morocco
Published in Geobiology (01-03-2021)“…The Ediacaran period coincides with the emergence of ancestral animal lineages and cyanobacteria capable of thriving in nutrient deficient oceans which…”
Get full text
Journal Article -
9
Cambrian microfossils from the High Atlas, Morocco: Taxonomic, biostratigraphic, palaeobiogeographic, and depositional significance of the Brèche à Micmacca limestone beds
Published in Journal of African earth sciences (1994) (01-01-2023)“…Diverse helcionelloid molluscs, probable polychaetes, and sclerites of other metazoan groups are described from the Brèche à Micmacca Member at section Le IX…”
Get full text
Journal Article -
10
The zircon evidence of temporally changing sediment transport—the NW Gondwana margin during Cambrian to Devonian time (Aoucert and Smara areas, Moroccan Sahara)
Published in International journal of earth sciences : Geologische Rundschau (01-11-2017)“…Detrital zircon provenance studies are an established tool to develop palaeogeographic models, mostly based on zircon of siliciclastic rocks and isotope data…”
Get full text
Journal Article -
11
Time constraints on Early Tonian Rifting and Cryogenian Arc terrane-continent convergence along the northern margin of the West African craton: Insights from SHRIMP and LA-ICP-MS zircon geochronology in the Pan-African Anti-Atlas belt (Morocco)
Published in Gondwana research (01-09-2020)“…The Neoproterozoic Anti-Atlas belt (Morocco) is a key segment in tracing the history of the northern margin of the West African craton (WAC) from Rodinia…”
Get full text
Journal Article -
12
Evidence of a large igneous province at ca. 347–330 Ma along the northern Gondwana margin linked to the assembly of Pangea: Insights from U–Pb zircon geochronology and geochemistry of the South-Western Branch of the Variscan Belt (Morocco)
Published in Earth-science reviews (01-11-2024)“…The migration and composition of magmatism over time can provide important insights into the tectonic evolution of an orogen like the Variscan Belt. To…”
Get full text
Journal Article -
13
On the Early Permian shape of Pangea from paleomagnetism at its core
Published in Gondwana research (01-02-2021)“…Although central to an understanding of Earth's paleogeography and the myriad processes that it affects, the geometry of Pangea during the early phase of its…”
Get full text
Journal Article -
14
-
15
An integrated ASTER-based approach for mapping carbonatite and iron oxide-apatite deposits
Published in Geocarto international (16-09-2022)“…Mapping of carbonatites and related mineral deposits has occupied prominent place in mineral resource exploration programs given their potential to host…”
Get full text
Journal Article -
16
Revised stratigraphic framework for the lower Anti-Atlas Supergroup based on U–Pb geochronology of magmatic and detrital zircons (Zenaga and Bou Azzer-El Graara inliers, Anti-Atlas Belt, Morocco)
Published in Journal of African earth sciences (1994) (01-11-2020)“…U–Pb geochronology of magmatic and detrital zircons (Zenaga and Bou Azzer-El Graara inliers, Anti-Atlas Belt, Morocco) and a reassessment of the published…”
Get full text
Journal Article -
17
Pyroxenite xenoliths and clinopyroxene megacrysts from the Cenozoic Jbel Saghro Volcanic Field (Anti-Atlas, Morocco): Petrography, mineral chemistry and equilibration conditions
Published in Chemie der Erde (01-04-2021)“…•Compositional diversity of pyroxenite xenoliths and clinopyroxene megacrysts in Saghro nephelinites is shown.•Mg-number and Cr2O3 contents of clinopyroxene…”
Get full text
Journal Article -
18
Discussion on ‘From Pan-African transpression to Cadomian transtension at the West African margin: new U–Pb zircon ages from the Eastern Saghro Inlier (Anti-Atlas, Morocco)’ by Errami et al. 2020 (SP503, 209–233)
Published in Journal of the Geological Society (01-07-2021)Get full text
Journal Article -
19
Mapping mafic dyke swarms, structural features, and hydrothermal alteration zones in Atar, Ahmeyim and Chami areas (Reguibat Shield, Northern Mauritania) using high-resolution aeromagnetic and gamma-ray spectrometry data
Published in Journal of African earth sciences (1994) (01-03-2020)“…Analysis of an airborne geophysical data covering the Tasiast-Tijirit Terrane in the western part of the Reguibat Shield (including the 1:200,000 geological…”
Get full text
Journal Article -
20
A comparison between the sub-continental lithospheric mantle of Libya, Morocco and Cameroon: Evidences from structural data and trace element of mantle xenolith Cr-diopsides
Published in Journal of African earth sciences (1994) (01-10-2019)“…We analysed the crystallography and the chemistry (major and trace elements) of 16 Cr-diopsides belonging to mantle xenoliths from northern (Waw-En-Namus,…”
Get full text
Journal Article