Dataset
Data Publication
Decoding the late Ediacaran multistage magma system in the Ougnat inlier (Eastern Anti-Atlas, Morocco)
Karaoui, Amar | Yajioui, Zakarya | Karaoui, Brahim | Nazzari, Manuela
GFZ Data Services
(2026)
Descriptions
Late Ediacaran magmatism in the Ougnat inlier (Eastern Anti-Atlas, Morocco) is characterized by a varied suite of volcanic rocks, showing a compositional transition from basalt to rhyolite over time. Field studies, lithofacies analyses, and petrographic observations indicate that the magmatic evolution involved shallow crustal processes such as magma mixing and fractional crystallization.
The preliminary obtained results from the analyzed minerals show a spectrum of compositions reflecting possible magma differentiation. The obtained data from feldspar minerals show high concentration of SiO2 (c.66 %), Al2O3 (c.18 %), and Na2O (c.13 %). These results point to an albite composition of the analyzed feldspar crystals. The analyzed biotite have c. 34 % of SiO2, c. 18% of Al2O3, c.9% of K2O, c.7% of MgO and c. 2% of TiO2 in which suggest a magnesium rich biotite. The analyzed garnets have c. 34% of SiO2, 30% of FeO, c. 20% of Al2O3, c. 7% of MnO, 2% of MgO, c. 1% of CaO. In addition, many elements chemical compositions maps for the pyroxene, feldspar, and Biotite—minerals have been performed simultaneously.
In conclusion, the resulting mineral chemistry data will be critically evaluated to refine mineral classification, determine precise compositions, and interpret the crystallization processes.
These findings also will advance our understanding of Late Ediacaran geodynamics in the northern West African Craton and offer broader insights through comparison with coeval magmatic events in Europe.
This publication results from work conducted under the transnational access/national open access action at Istituto Nazionale di Geofisica e Vulcanologia (INGV), Experimental Volcanology and Geophysics, High Pressure High Temperature Laboratory, Rome, Italy, supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.
Keywords
MSL enriched keywords
Precambrian
Proterozoic
Neoproterozoic
Ediacaran
igneous rock - intrusive
magma
igneous rock - extrusive
acidic extrusive
rhyolite
basic extrusive
basalt
minerals
silicate minerals
phyllosilicates
mica
biotite
tectosilicates
feldspar - plagioclase
albite
intraplate setting
cratonisation
craton
Earth's structure
Earth crust
measured property
iron
ferrous iron oxide (di-valent)
magnesium
magnesium oxide
manganese
manganese oxide
potassium
potassium oxide
silicon
silicon dioxide
MSL vocabulary keywords corresponding to originally assigned keywords
Ediacaran
Originally assigned keywords
EPOS
multi-scale laboratories
geochemistry and microscopy
geochemistry data
Ougnat inlier
West African Craton
Ediacaran
magmatism
mineral chemistry
rock
SOLID EARTH
GEOCHEMICAL PROPERTIES
ROCKS/MINERALS/CRYSTALS
earth interior setting
magmatic process
Metadata
MSL enriched sub domains
geochemistry
Resource Type
Source
Source publisher
| GFZ Data Services |
Creators
| Karaoui, Amar |
| Personal |
| https://orcid.org/0000-0003-1839-2690 |
| Department of Geosciences, Faculty of Sciences and Techniques-Errachidia, Moulay Ismail University of Meknes, Morocco |
| Yajioui, Zakarya |
| Personal |
| https://orcid.org/0000-0003-3901-5763 |
| Department of Geosciences, Faculty of Sciences and Techniques-Errachidia, Moulay Ismail University of Meknes, Morocco |
| Karaoui, Brahim |
| Personal |
| https://orcid.org/0000-0003-0079-7948 |
| Department of Geosciences, Faculty of Sciences and Techniques-Errachidia, Moulay Ismail University of Meknes, Morocco |
| Nazzari, Manuela |
| Personal |
| https://orcid.org/0000-0001-5926-5773 |
| Istituto Nazionale di Geofisica e Vulcanologia (INGV) Experimental Volcanology and Geophysics High Pressure High Temperature Laboratory |
Contributors
| HP-HT Laboratory of Experimental Volcanolgy and Geophysics (INGV, Rome, Italy) |
| Personal |
| INGV, Italy |
| Karaoui, Amar |
| Personal |
| https://orcid.org/0000-0003-1839-2690 |
| Department of Geosciences, Faculty of Sciences and Techniques-Errachidia, Moulay Ismail University of Meknes, Morocco |
Citation
Karaoui, A., Yajioui, Z., Karaoui, B., & Nazzari, M. (2026). Decoding the late Ediacaran multistage magma system in the Ougnat inlier (Eastern Anti-Atlas, Morocco) [Dataset]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2025.116
References
| URL |
| References |
| URL |
| References |
Dates
| Available | 2028-12-30 |
| Created | 2026-01-09 |
| Valid | 2026-01-09/2026-01-09 |
Language
- no language entry found -
Funding References
| Funder Name | European Commission |
| Funder Identifier | http://dx.doi.org/10.13039/501100000780 |
| Award Title | MEET |
| Funder Name | Ministero dell'Università e della Ricerca |
| Funder Identifier | http://dx.doi.org/10.13039/501100021856 |
| Award Number | D53C22001400005 |
| Award Title | MEET |
Rights
| Name | Creative Commons Attribution 4.0 International |
| URI | https://creativecommons.org/licenses/by/4.0/legalcode |
| Identifier | cc-by-4.0 |
| Identifier Scheme | SPDX |
| Scheme URI | https://spdx.org/licenses/ |
| Name | CC BY 4.0 |
| URI | http://creativecommons.org/licenses/by/4.0/ |