Aratz Beranoaguirre
YOU?
Author Swipe
View article: New Ar-Ar geochronology of the Catanda carbonatitic magmatism (Angola) and implications on its origin
New Ar-Ar geochronology of the Catanda carbonatitic magmatism (Angola) and implications on its origin Open
The Catanda Complex is one of the few examples of extrusive carbonatitic volcanoes in the world, and the only one known in Angola. It occurs along the Lucapa corridor that runs SW-NE across Angola. Kimberlitic, alkaline (mostly syenitic to…
View article: Preliminary U-Pb Zircon Geochronology of the Eburnean Menongue Igneous Complex, Cassinga Zone, Angolan Shield
Preliminary U-Pb Zircon Geochronology of the Eburnean Menongue Igneous Complex, Cassinga Zone, Angolan Shield Open
The Menongue Igneous Complex (MIC) consists of a set of previously undated plutonic and volcanic rocks located within the Cassinga Zone of the Angolan Shield. The complex comprises granodiorites, monzo- to syenogranites, and subordinate di…
View article: Preliminary Ar-Ar geochronology of Mesozoic alkaline-carbonatitic to tholeiitic magmatism in the Quilengues area, SW Angola
Preliminary Ar-Ar geochronology of Mesozoic alkaline-carbonatitic to tholeiitic magmatism in the Quilengues area, SW Angola Open
New geochronological data have been obtained on kimberlitic units related to the Bonga carbonatite massif and basaltic dikes in the Quilengues region of southwestern Angola as part of the National Geological Plan of Angola (PLANAGEO). Ar-A…
View article: Zircon micro-inclusions as an obstacle for in situ garnet U–Pb geochronology: an example from the As Sifah eclogite locality, Oman
Zircon micro-inclusions as an obstacle for in situ garnet U–Pb geochronology: an example from the As Sifah eclogite locality, Oman Open
Garnet is commonly used to calculate pressure (P)–temperature (T) histories of metamorphic rocks, as well as to monitor changes in bulk-rock composition (X) and deformation (d). In situ U–Pb geochronology by laser ablation–inductively coup…
View article: Hydrothermal co-enrichment of Au, As, Co, and Cu in orogenic deposits: insights from the Pohjanmaa belt
Hydrothermal co-enrichment of Au, As, Co, and Cu in orogenic deposits: insights from the Pohjanmaa belt Open
The Huhta Au and Jouhineva Au-Co-Cu-Ag deposits lie ~ 3 km apart in the Pohjanmaa Belt, western Finland, in Paleoproterozoic metavolcano-sedimentary host rocks. Both deposits are spatially and genetically related to the Sievi shear zone bu…
View article: From the Upper Ordovician unconformity to the core-mantle boundary: A review of the Ordovician events in the Canigó massif, Pyrenees
From the Upper Ordovician unconformity to the core-mantle boundary: A review of the Ordovician events in the Canigó massif, Pyrenees Open
We present a review of the stratigraphical, structural, geochemical, isotopic and geochronological data that document Ordovician events in the Canigó massif, eastern Pyrenees. Voluminous felsic magmatism, 15-20my in duration, occurred in t…
View article: Contributions of arid climate and hydrothermal fluid flow on sedimentation in saline‐alkaline lakes: Insight from the Ibar intramontane basin (Southern Serbia)
Contributions of arid climate and hydrothermal fluid flow on sedimentation in saline‐alkaline lakes: Insight from the Ibar intramontane basin (Southern Serbia) Open
Saline‐alkaline lakes are common in tectonically active, semi‐arid regions, resulting from the interplay between tectonic, hydrothermal, surface processes and climate. This study investigates their contribution to the evolution of the sali…
View article: Accuracy of garnet U–Pb LA–ICPMS compared to Sm-Nd TIMS dating
Accuracy of garnet U–Pb LA–ICPMS compared to Sm-Nd TIMS dating Open
Garnet has an extensive pressure-temperature (P–T) stability field for a wide variety of rock compositions, and its compositional changes reflect changes during its prograde P–T evolution. The beauty of garnet petrochronometry …
View article: In-situ garnet U-Pb dating of metamorphic rocks: Exploring geochronological differences between garnet and accessory minerals
In-situ garnet U-Pb dating of metamorphic rocks: Exploring geochronological differences between garnet and accessory minerals Open
Garnet U-Pb dating by laser ablation – multicollector – inductively coupled plasma – mass spectrometry (LA-MC-ICPMS) in metamorphic rocks allows constraining the main stages of tectonic thickening during orogenesis. Dates…
View article: Pyrite growth during slab subduction: implications for S flux
Pyrite growth during slab subduction: implications for S flux Open
Mobility of S in subduction zones is complex with far reaching impacts on the formation of large hydrothermal ore deposits in arc environments, volcanic S emissions into the atmosphere potentially impacting the Earth’s climate, S tra…
View article: First steps of LA-ICPMS U-Pb magnetite geochronology
First steps of LA-ICPMS U-Pb magnetite geochronology Open
It is well known that the density of metamorphic reactions occurring in subduction zones, due to intense fluid-melt activity, is very high. One of the minerals resulting from all these reactions, present both in the downgoing slab and in t…
View article: The role of the arid climate and hydrothermal fluids in depositional processes in saline alkaline lakes: inferences from Ibar intramountain basin (Serbia)
The role of the arid climate and hydrothermal fluids in depositional processes in saline alkaline lakes: inferences from Ibar intramountain basin (Serbia) Open
Saline-alkaline lakes commonly occur in semi-arid tectonically active regions, and their deposition is influenced by tectonic, surface and hydrothermal processes, and climate. This study explores the effects of climate and hydrothermal flu…
View article: Microstructural, petrological and petrochronological study of the graphitic schists ("Furtschaglschiefer") of Passo di Vizze (SW Tauern Window, Eastern Alps, Italy)
Microstructural, petrological and petrochronological study of the graphitic schists ("Furtschaglschiefer") of Passo di Vizze (SW Tauern Window, Eastern Alps, Italy) Open
Furtschaglschiefer is a thick layer of graphitic schists belonging to the Greiner unit in the western Tauern Window. The precise tectonostratigraphic assignment of these rocks is debated, but they are considered the post-Variscan cover of …
View article: What are we dating? The role of micro-inclusions for in situ garnet geochronology
What are we dating? The role of micro-inclusions for in situ garnet geochronology Open
In situ garnet U-Pb geochronology by laser ablation-inductively coupled mass spectrometry (LA-ICPMS) is a powerful tool for rapid and high-spatial resolution dating of metamorphic pressure-temperature–time histories. However, ultra-l…
View article: Sulfur and metal mobilization during the magmatic-hydrothermal evolution of the Atlantis Bank oceanic core complex: implications for seafloor massive sulfide deposits formation at slow and ultra-slow spreading ridges
Sulfur and metal mobilization during the magmatic-hydrothermal evolution of the Atlantis Bank oceanic core complex: implications for seafloor massive sulfide deposits formation at slow and ultra-slow spreading ridges Open
The specific oceanic crust architecture, magmatism, hydrothermal fluid circulation and lithologies at oceanic core complexes (OCCs) imply different S and metal (e.g. Cu, Zn, Co, Ni) fluxes relative to well-structured oceanic crust at-fast …
View article: Zircon micro-inclusions as an obstacle for in situ garnet U-Pb geochronology: An example from the As Sifah eclogite locality, Oman
Zircon micro-inclusions as an obstacle for in situ garnet U-Pb geochronology: An example from the As Sifah eclogite locality, Oman Open
Garnet is commonly used to calculate pressure (P)-temperature (T) histories of metamorphic rocks, as well as to monitor changes in bulk-rock composition (X) and deformation (d). In situ U-Pb geochronology by laser ablation-inductively coup…
View article: Spongy-looking microfabrics in the earliest named stromatolite represent deep burial alteration and incipient metamorphism
Spongy-looking microfabrics in the earliest named stromatolite represent deep burial alteration and incipient metamorphism Open
The earliest named stromatolite Cryptozoon Hall, 1884 (Late Cambrian, ca. 490 Ma, eastern New York State), was recently re-interpreted as an interlayered microbial mat and non-spiculate (keratosan) sponge deposit. This "classic stromatolit…
View article: Fossil record misconstrued: Sponge-like fabrics reflect incipient carbonate metamorphism
Fossil record misconstrued: Sponge-like fabrics reflect incipient carbonate metamorphism Open
The earliest named stromatolite Cryptozoon Hall, 1884 (Late Cambrian, ca. 490 Ma, eastern New York State), was recently re-interpreted as interlayered microbial mat and non-spiculate (keratosan) sponge deposit. This “classic stromatolite” …
View article: Towards a better understanding of the geochemical proxy record of complex carbonate archives
Towards a better understanding of the geochemical proxy record of complex carbonate archives Open
68
View article: Multi-stage ultrahigh temperature metamorphism in the lower crust of the Kaapvaal craton recorded by U–Pb ages of garnet
Multi-stage ultrahigh temperature metamorphism in the lower crust of the Kaapvaal craton recorded by U–Pb ages of garnet Open
U–Pb ages were determined by split-stream LA-SF/MC-ICPMS in garnets from UHT granulite xenoliths (Star mine, South Africa; 124 Ma). They give a considerable age range of 400 million years with well-defined maximas at 3.09, 3.01 and 2.75 Ga…
View article: Magmatic evolution of the Kolumbo submarine volcano and its implication to seafloor massive sulfide formation
Magmatic evolution of the Kolumbo submarine volcano and its implication to seafloor massive sulfide formation Open
Seafloor massive sulfides form in various marine hydrothermal settings, particularly within volcanic arcs, where magmatic fluids may contribute to the metal budget of the hydrothermal system. In this study, we focus on the Kolumbo volcano,…