Deciphering western Mediterranean kinematics using metamorphic porphyroblasts from the Alpujárride Complex (Betic Cordillera)

Ruiz‐Fuentes, Alejandro; Aerden, Domingo G.A.M.

doi:10.1016/j.jsg.2023.104823

Journal of Structural Geology

2023

DOI: 10.1016/j.jsg.2023.104823

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Deciphering western Mediterranean kinematics using metamorphic porphyroblasts from the Alpujárride Complex (Betic Cordillera)

Alejandro Ruiz‐Fuentes

Domingo G.A.M. Aerden

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Cited by 3 publications

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Structural controls on cobalt mineralisation during regional metamorphism: an example from the Rajapalot area, Finland

Sayab,

Menzies,

Palin

et al. 2024

Miner Deposita

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The Rajapalot area of Finnish Lapland hosts an unusually high-grade association of cobalt-only and gold–cobalt deposits (10.91 Mt @ 2.5 g/t Au + 0.44% Co total inferred resources) within multiply folded metasedimentary rocks of the Paleoproterozoic Svecofennian collisional orogeny. Through the integration of X-ray computed micro-tomography and micro-X-ray fluorescence raster imaging of drill-core samples, we produce a model of cobalt-bearing ore mineralisation, which reveals primary fluid transportation mechanisms and precipitation pathways. When combined with the deposit-scale, high-resolution ground-based magnetic geophysical data, we show that cobalt-bearing ores in the Rajapalot region occur mostly as saddle reefs located in dilated fold hinges, which formed by simultaneous synthetic and antithetic shearing along developing crenulation-cleavage planes and incompetent bedding layers, respectively. We suggest that multi-layered rock complexes with alternations of competent and incompetent layers deformed and metamorphosed to upper greenschist-lower amphibolite facies should represent focus regions for cobalt exploration targeting campaigns in orogenic belts. The non-destructive workflow presented in this study could be an integral part of an early stage of cobalt mineral processing and traceability before metallurgical treatment.

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Structural controls on cobalt mineralisation during regional metamorphism: an example from the Rajapalot area, Finland

Sayab,

Menzies,

Palin

et al. 2024

Miner Deposita

View full text Add to dashboard Cite

show abstract

Polyphase deformation of staurolite-bearing metapelite in the Chinese Altai: Recording a Devonian-Permian tectonic regime switch in the southwestern Central Asian Orogenic Belt

Miao¹,

Zhang²,

Schulmann³

et al. 2023

Journal of Structural Geology

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Pre-Alpine prograde evolution of the Upper Alpujarride (Betic-Rif belt) reveals a Paleotethys-related collision

Sánchez-Navas,

Martín-Algarra,

Blanco-Quintero

et al. 2023

International Geology Review

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Deciphering western Mediterranean kinematics using metamorphic porphyroblasts from the Alpujárride Complex (Betic Cordillera)

Cited by 3 publications

References 99 publications

Structural controls on cobalt mineralisation during regional metamorphism: an example from the Rajapalot area, Finland

Structural controls on cobalt mineralisation during regional metamorphism: an example from the Rajapalot area, Finland

Polyphase deformation of staurolite-bearing metapelite in the Chinese Altai: Recording a Devonian-Permian tectonic regime switch in the southwestern Central Asian Orogenic Belt

Pre-Alpine prograde evolution of the Upper Alpujarride (Betic-Rif belt) reveals a Paleotethys-related collision

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