Geochemical record of subduction initiation in the sub-arc mantle: Insights from the Loma Caribe peridotite (Dominican Republic)

Marchesi, Claudio; Garrido, Carlos J.; Proenza, Joaquín A.; Hidas, Károly; Varas-Reus, Maŕia Isabel; Butjosa, Lidia; Lewis, John F.

doi:10.1016/j.lithos.2016.02.009

Cited by 48 publications

(29 citation statements)

References 81 publications

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“…Subduction of the North American plate beneath the Greater Antilles island-arc and related arc magmatism ceased in Hispaniola in the Eocene with the collision of the arc and the Bahamas Platform (Mann et al, 1991;Boschman et al, 2014). In the eastern Cordillera Central, transpressional WNW-ESE faults accommodated arc-continent collision in Hispaniola and juxtaposed the arcrelated Los Ranchos, Maimón, Peralvillo, and Río Verde formations with Caribbean-derived mantle peridotites of Loma Caribe (Marchesi et al, 2016, and references therein) and Caribbean-Colombian oceanic plateau enriched mid-ocean ridge basalts (E-MORB) represented by the Duarte, Siete Cabezas, and Pelona-Pico Duarte formations ( Fig. 1; Escuder-Viruete et al, 2008).…”

Section: Geologic Settingmentioning

confidence: 99%

Re-Os and U-Pb Geochronology of the Doña Amanda and Cerro Kiosko Deposits, Bayaguana District, Dominican Republic: Looking Down for the Porphyry Cu-Mo Roots of the Pueblo Viejo-Type Mineralization in the Island-Arc Tholeiitic Series of the Caribbean

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Hosted in the Early Cretaceous bimodal tholeiite volcanic series of the Los Ranchos Formation, the Doña Amanda and Cerro Kiosko deposits in the Bayaguana district represent significant Au, Cu, and Ag resources in the Cordillera Oriental of the Dominican Republic. At Doña Amanda, a dense stockwork of quartz-sulfide veins is hosted by volcanic rocks with intense transitional phyllic-advanced argillic and silicic hydrothermal alteration assemblages, indicating a high-sulfidation environment. Wavy quartz veins with central sutures and rims of pyrite + enargite + molybdenite + fahlore (B veins) are cut by planar quartz-pyrite D veins. Primary fluid inclusions in quartz from B veins (Th: 160°->400°C; salinity: 7.9-16.4 wt % NaCl equiv) are interpreted as porphyry-type fluids. Inclusion fluids in quartz of quartz-pyrite veins (Th: 125°-175°C; salinity: 4.8-12.2 wt % NaCl equiv), quartz from silicic altered wall rocks (Th: 150°-175°C; salinity: 8.3-13.9 wt % NaCl equiv), and late, distal calcite veins (Th: 120°-160°C; salinity: 5.0-13.3 wt % NaCl equiv) indicate limited mixing with more dilute fluids and rule out mixing with fresh meteoric water. In Cerro Kiosko, a swarm of fault-controlled massive chalcopyrite + enargite + bornite + fahlore D veins and lodes are hosted by rocks with pervasive kaolinite alteration after sericite. δ 34 S values of vein sulfides from both deposits are all close to-2‰ and consistent with a predominance of magmatic sulfur and sulfide deposition from an oxidizing magmatic fluid. These data are consistent with a transitional environment between a deeper porphyry Cu(-Mo) and an overlying high-sulfidation epithermal deposit. An Re-Os age (112.6 ± 0.4 Ma) for molybdenite from the Doña Amanda deposit places the porphyry-epithermal mineralization as Early Cretaceous, coeval with the Los Ranchos Formation host rocks and with the Pueblo Viejo deposit. New sensitive high-resolution ion microprobe U-Pb ages on zircons from plagioclase-phyric rhyolite domes in the Bayaguana district are consistent with porphyry-high-sulfidation epithermal mineralization occurring along the Los Ranchos Formation during tonalite batholith emplacement in the basaltic island-arc basement at ca. 118 to 112 Ma and finalization of felsic volcanism at ca. 110 to 107 Ma.

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Section: Geologic Settingmentioning

confidence: 99%

Re-Os and U-Pb Geochronology of the Doña Amanda and Cerro Kiosko Deposits, Bayaguana District, Dominican Republic: Looking Down for the Porphyry Cu-Mo Roots of the Pueblo Viejo-Type Mineralization in the Island-Arc Tholeiitic Series of the Caribbean

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“…In the Greater Antilles, subduction-related magmatism ceased as a result of arc-continent collision in the northern leading edge of the Caribbean after consumption of Late Jurassic oceanic Proto-Caribbean lithosphere between the Cretaceous arc(s) and the Bahamas platform (Mann et al, 1991). The collision triggered the obduction of ophiolitic complexes onto continental margins in Guatemala, Cuba, Hispaniola and Puerto Rico (Escuder-Viruete et al, 2014;Garcia-Casco et al, 2008a;Lewis et al, 2006;Marchesi et al, 2006Marchesi et al, , 2011Marchesi et al, , 2016Pindell et al, 2012;Solari et al, 2013) and the evolution of the plate margin to the current scenario of left-lateral strike-slip tectonics and oblique convergence between the Caribbean and North America (Mann et al, 2002;Vila et al, 1987).…”

Section: Geodynamic Settingmentioning

confidence: 99%

“…1a). In the Cordillera Central geological province, transpressional WNW-ESE faults juxtaposed tectonostratigraphic units with different pre-Eocene evolutions, which include: (1) the serpentinized Loma Caribe peridotites (Lewis et al, 2006;Marchesi et al, 2016;Proenza et al, 2007), (2) Late Jurassic MOR gabbros and basalts of the Proto-Caribbean crust (Loma la Monja assemblage), (3) Cretaceous enriched MORB (E-MORB), ocean island basalts (OIB) and picrites, which are onshore representatives of the CLIP (Aptian Duarte complex and Campanian-Maastrichtian Pelona-Pico Duarte and Siete Cabezas formations; Escuder-Viruete et al, 2007b (Fig. 1a), and (4) Cretaceous arc-related igneous and sedimentary rocks (Maimón-Amina, Los Ranchos, Río Verde, Peralvillo and Tireo formations; Escuder-Viruete et al, 2006, 2007a, c, 2010Lewis et al, 1991Lewis et al, , 2000Torró et al, 2016a).…”

Section: Geodynamic Settingmentioning

confidence: 99%

“…(Lewis et al, 2002(Lewis et al, , 2006 or they have been assigned to a back-arc setting (Escuder-Viruete et al, 2008). More recently, however, Marchesi et al (2016) related the…”

Section: Correlations With Ophiolitic Rocks In Hispaniola and Implicamentioning

confidence: 99%

“…These authors concluded indeed that the Loma Caribe dunites formed by interaction of residual peridotites with two subductionrelated magmas, and pointed to the LREE-depleted LOTI and boninitic lavas of the Maimón and Los Ranchos formations as the most likely volcanic products of these melts. The scenario suggested by Marchesi et al (2016) -Viruete et al, 2007a;Horan, 1995;Torró et al, 2016a). Pindell et al (2012) proposed that the onset of SW-directed subduction of the Proto-Caribbean lithosphere beneath the Caribbean Plate occurred at ca.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Petrogenesis of meta-volcanic rocks from the Maimón Formation (Dominican Republic): Geochemical record of the nascent Greater Antilles paleo-arc

Torró

Proenza

Marchesi

et al. 2017

Lithos

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Metamorphosed basalts, basaltic andesites, andesites and plagiorhyolites of the Early Cretaceous, probably pre-Albian, Maimón Formation, located in the Cordillera Central of the Dominican Republic, are some of the earliest products of the Greater Antilles arc magmatism. In this article, new whole-rock element and Nd-Pb radiogenic isotope data are used to give new insights into the petrogenesis of the Maimón meta-volcanic rocks and constrain the early evolution of the Greater Antilles paleo-arc system. Three different groups of mafic volcanic rocks are recognized on the basis of their immobile element contents. Group 1 comprises basalts with compositions similar to low-Ti island arc tholeiites (IAT), which are depleted in light rare earth elements (LREE) and resemble the forearc basalts (FAB) and transitional FAB-boninitic basalts of the Izu-Bonin-Mariana forearc. Group 2 rocks have boninite-like compositions relatively rich in Cr and poor in TiO 2. Group 3 comprises low-Ti island arc tholeiitic basalts with near-flat chondritenormalized REE patterns. Plagiorhyolites and rare andesites present near-flat to subtly LREEdepleted chondrite normalized patterns typical of tholeiitic affinity. Nd and Pb isotopic ratios of plagiorhyolites, which are similar to those of Group 1 and 3 basalts, support that these felsic lavas formed by anatexis of the arc lower crust. Geochemical modelling points that the parental basic magmas of the Maimón meta-volcanic rocks formed by hydrous melting of a heterogeneous spinel-facies mantle source, similar to depleted MORB mantle (DMM) or depleted DMM (D-DMM), fluxed by fluids from subducted oceanic crust and Atlantic Cretaceous pelagic sediments. Variations of subduction-sensitive element concentrations and ratios from Group 1 to the younger rocks of Groups 2 and 3 generally match the geochemical progression from FAB-like to boninite and IAT lavas described in subductioninitiation ophiolites. Group 1 basalts likely formed at magmatic stages transitional between FAB and first-island arc magmatism, whereas Group 2 boninitic lavas resulted from focused flux melting and higher degrees of melt extraction in a more mature stage of subduction. Group 3 basalts probably represent magmatism taking place immediately before the establishment of a steady-state subduction regime. The relatively high extents of flux melting and slab input recorded in the Maimón lavas support a scenario of hot subduction beneath the nascent Greater Antilles paleo-arc. Paleotectonic reconstructions and the markedly depleted, though heterogeneous character of the mantle source, indicate the rise of shallow asthenosphere which had sourced mid-ocean ridge basalts (MORB) and/or back-arc basin basalts (BABB) in the proto-Caribbean domain prior to the inception of SW-dipping subduction. Relative to the neighbouring Aptian-Albian Los Ranchos Formation, we suggest that Maimón volcanic rocks extruded more proximal to the vertical projection of the subducting proto-Caribbean spreading ridge.

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Earth’s earliest phaneritic ultramafic rocks 1: plate tectonic mantle slices or crustal cumulates?

Zuo

Webb

Chin

et al. 2022

Preprint

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Geochemical record of subduction initiation in the sub-arc mantle: Insights from the Loma Caribe peridotite (Dominican Republic)

Cited by 48 publications

References 81 publications

Re-Os and U-Pb Geochronology of the Doña Amanda and Cerro Kiosko Deposits, Bayaguana District, Dominican Republic: Looking Down for the Porphyry Cu-Mo Roots of the Pueblo Viejo-Type Mineralization in the Island-Arc Tholeiitic Series of the Caribbean

Re-Os and U-Pb Geochronology of the Doña Amanda and Cerro Kiosko Deposits, Bayaguana District, Dominican Republic: Looking Down for the Porphyry Cu-Mo Roots of the Pueblo Viejo-Type Mineralization in the Island-Arc Tholeiitic Series of the Caribbean

Petrogenesis of meta-volcanic rocks from the Maimón Formation (Dominican Republic): Geochemical record of the nascent Greater Antilles paleo-arc

Earth’s earliest phaneritic ultramafic rocks 1: plate tectonic mantle slices or crustal cumulates?

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