Idbaroud, Mohamed; Bouabdellah, Mohammed; Levresse, Gilles; Boukirou, Wissale; Murphy, J Brendan; Melchiorre, Erik; Genna, Dominique; Yans, Johan; Mouguina, El Mostafa; El Guedou, Ahmed; Hoernle, Kaj: Oxygen and radiogenic isotope compositions for whole-rock from the Oumjrane gabbronorite, Eastern Anti-Atlas, Morocco [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993400 (dataset in review)
Abstract:
This dataset provides whole-rock isotopic data from the Oumjrane gabbronorite intrusion, located in the eastern Anti-Atlas (Morocco), within the Northwest African Variscan belt. Samples were collected from a fully cored borehole intersecting a mafic intrusion emplaced within Paleozoic sedimentary successions of the Tafilalet–Maider basins during field campaigns conducted between 2021 and 2023.
The dataset includes radiogenic isotope compositions (Sr–Nd–Pb) and stable oxygen isotope ratios (δ¹⁸O) for selected samples. Isotopic analyses were performed using standard mass spectrometry techniques. In addition, selected isotopic parameters correspond to calculated initial compositions derived from isotopic data at the time of magmatism. All isotopic data are reported at the whole-rock scale and are accompanied by detailed metadata, including sample identification, lithological descriptions, and analytical protocols. The dataset is provided in a tabulated format with clearly defined variables and units, ensuring reproducibility. These data provide a robust framework for investigating magma sources, crustal contamination, and magmatic evolution processes within the Oumjrane intrusion.
Keyword(s):
Supplement to:
Idbaroud, Mohamed; Bouabdellah, Mohammed; Levresse, Gilles; Boukirou, Wissale; Murphy, J Brendan; Yans, Johan; Melchiorre, Erik; Genna, Dominique; Mouguina, El Mostafa; El Guedou, Ahmed; Hoernle, Kaj (in review): Petrogenetic, geochemical and geochronological constraints on the Early Devonian, high Nb, K-rich Oumjrane gabbronorite intrusion (Eastern Anti-Atlas, Morocco): implications for back-arc extension during Rheic-Paleo-Tethys transition. Journal of Petrology
References:
Boukirou, Wissale; Bouabdellah, Mohammed; Hoernle, Kaj; Hauff, Folkmar; Slezak, Paul; Chaib, Mustapha; El Gadarri, Mohamed; Yans, Johan; Errami, Abdellatif; Levresse, Gilles (2023): The Twihinate carbonatite (Moroccan Sahara): Evidence for compositional mantle heterogeneity and northwestern African plate geodynamics. Chemical Geology, 637, 121648, https://doi.org/10.1016/j.chemgeo.2023.121648
Chen, Long; Wang, Yaying; Somerville, Ian; Zhong, Yuan; Li, Xiaohui; Li, Dongyong; Deng, Jianghong; Yu, Shengyao; Sun, Guochao; Zhao, Zifu; Li, Sanzhong (2025): Recycled oceanic gabbro produced the depleted component in hotspot magma from the Comei large igneous province in the Kerguelen mantle plume. Communications Earth & Environment, 6(1), 371, https://doi.org/10.1038/s43247-025-02353-7
Idbaroud, Mohamed; Bouabdellah, Mohammed; Levresse, Gilles; Mouguina, E L Mostafa; Mathur, Ryan; Melchiorre, Erik; Yans, Johan; El Guedou, Ahmed (2026): Timing of the telescoped sediment-hosted Cu-(Ni) and Pb-Zn-Ba mineralization at the Oumjrane vein system (Eastern Anti-Atlas, Morocco) and its relevance to Pre-Cretaceous Central Atlantic and Maghrebian Tethys geodynamics. Gondwana Research, 149, 351-372, https://doi.org/10.1016/j.gr.2025.08.022
Leprêtre, Rémi; Villeneuve, Michel; Chopin, Francis; Gärtner, Andreas; Houicha, Mohamed El; Aghzer, Abdel Mouhsine; Guillou, Omar; Tabaud, Anne-Sophie; Youbi, Nasrrddine; Schulmann, Karel; El Archi, Abdelkrim; Ghienne, Jean-François (2024): The Variscides in the NW Corner of Africa. In: Hamimi, Z, Chabou, MC, Errami, E, Fowler, A-R, Fello, N, Masrouhi, A, Leprêtre, R (eds.), The Geology of North Africa, Regional Geology Reviews, Springer International Publishing, Cham, 145-185, https://doi.org/10.1007/978-3-031-48299-1_6
Moradi, Sakine; Chen, Lie-Meng; Lightfoot, Peter C; Huang, Kang-Jun; Su, Qiao; Yu, Song-Yue; Zhu, Li-Juan; Rui-zhong, Hu (2025): Magnesium isotope geochemistry in continental flood basalts: implications for mantle source heterogeneity. Geochimica et Cosmochimica Acta, S0016703725005794, https://doi.org/10.1016/j.gca.2025.10.035
Murphy, J Brendan; Keppie, J Duncan (2005): The Acadian Orogeny in the Northern Appalachians. International Geology Review, 47(7), 663-687, https://doi.org/10.2747/0020-6814.47.7.663
Murphy, J Brendan; Nance, R Damian; Schulmann, Karel; Kuiper, Yvette D; Catalán, José R Martínez (2025): Assembling Pangaea – The Complex Morphology of the Laurussia – Gondwana Collision. Elements, 21(6), 422-428, https://doi.org/10.2138/gselements.21.6.422
Najih, Amine; Montero, Pilar; Verati, Chrystèle; Chabou, Moulley Charaf; Fekkak, Abdelilah; Baidder, Lahssen; Ezzouhairi, Hassan; Bea, Fernando; Michard, André (2019): Initial Pangean rifting north of the West African Craton: Insights from late Permian U-Pb and 40Ar/39Ar dating of alkaline magmatism from the Eastern Anti-Atlas (Morocco). Journal of Geodynamics, 132, 101670, https://doi.org/10.1016/j.jog.2019.101670
Nance, R Damian; Gutiérrez-Alonso, Gabriel; Keppie, J Duncan; Linnemann, Ulf; Murphy, J Brendan; Quesada, Cecilio; Strachan, Rob A; Woodcock, Nigel H (2012): A brief history of the Rheic Ocean. Geoscience Frontiers, 3(2), 125-135, https://doi.org/10.1016/j.gsf.2011.11.008
Nowak, Izabella; Żelaźniewicz, Andrzej; Dörr, Wolfgang; Franke, W; Larionov, Alexander N (2011): The Izera metabasites, West Sudetes, Poland: Geologic and isotopic U–Pb zircon evidence of Devonian extension in the Saxothuringian Terrane. Lithos, 126(3-4), 435-454, https://doi.org/10.1016/j.lithos.2011.07.006
Søager, Nina; Holm, Paul Martin; Llambías, Eduardo Jorge (2013): Payenia volcanic province, southern Mendoza, Argentina: OIB mantle upwelling in a backarc environment. Chemical Geology, 349-350, 36-53, https://doi.org/10.1016/j.chemgeo.2013.04.007
Coverage:
Latitude: 30.641843 * Longitude: -5.092385
Date/Time Start: 2023-12-10T08:00:00 * Date/Time End: 2023-12-10T08:00:00
Minimum DEPTH, sediment/rock: 15 m * Maximum DEPTH, sediment/rock: 89 m
Event(s):
OUM_MAG_23 (Gabbro) * Latitude: 30.641843 * Longitude: -5.092385 * Date/Time: 2023-12-10T08:00:00 * Elevation: 800.0 m * Location: Anti-Atlas, Morocco * Campaign: Oumjrane_Explo_2023 (OUMCu24) * Method/Device: Drilling/coring
Comment:
Funded by:
* European Union's Learning Mobility of Individuals program (AC 171)
* UNAM research grant
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample ID | Sample ID | Idbaroud, Mohamed | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Idbaroud, Mohamed | Geocode | |
| 3 | Main Lithology | Main lith | Idbaroud, Mohamed | |||
| 4 | Age | Age | Ma | Idbaroud, Mohamed | Absolute age | |
| 5 | δ18O | δ18O | ‰ | Idbaroud, Mohamed | Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta plus XP | vs. V-SMOW |
| 6 | Rubidium-87/Strontium-86 ratio | 87Rb/86Sr | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 7 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 8 | Strontium-87/Strontium-86 ratio, standard deviation | 87Sr/86Sr std dev | ± | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | 1Sigma |
| 9 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Idbaroud, Mohamed | Calculated | Initial isotopic composition calculated at the time of magmatism. | |
| 10 | Samarium-147/Neodymium-144 ratio | 147Sm/144Nd | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 11 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 12 | Neodymium-143/Neodymium-144 ratio, standard deviation | 143Nd/144Nd std dev | ± | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | 1Sigma |
| 13 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Idbaroud, Mohamed | Calculated | Initial isotopic composition calculated at the time of magmatism. | |
| 14 | ε-Neodymium (T) | ε-Nd(T) | Idbaroud, Mohamed | |||
| 15 | Geological age | Age | Ga | Idbaroud, Mohamed | T DM | |
| 16 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 17 | Lead-206/Lead-204 ratio, standard deviation | 206Pb/204Pb std dev | ± | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | 1Sigma |
| 18 | Lead-207/Lead-204 ratio | 207Pb/204Pb | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 19 | Lead-207/Lead-204 ratio, standard deviation | 207Pb/204Pb std dev | ± | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | 1Sigma |
| 20 | Lead-208/Lead-204 ratio | 208Pb/204Pb | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | ||
| 21 | Lead-208/Lead-204 ratio, standard deviation | 208Pb/204Pb std dev | ± | Idbaroud, Mohamed | Multi-collector ICP-MS (MC-ICP-MS), Ametek, Plasma 3 | 1Sigma |
| 22 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Idbaroud, Mohamed | Calculated | Initial isotopic composition calculated at the time of magmatism. Magmatic event (411 Ma). | |
| 23 | Lead-207/Lead-204 ratio | 207Pb/204Pb | Idbaroud, Mohamed | Calculated | Initial isotopic composition calculated at the time of magmatism. Magmatic event (411 Ma). | |
| 24 | Lead-208/Lead-204 ratio | 208Pb/204Pb | Idbaroud, Mohamed | Calculated | Initial isotopic composition calculated at the time of magmatism. Magmatic event (411 Ma). |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
109 data points