Age and Tectonic Significance of High-Pressure Metamorphic Rocks of Cuba

Somin, M. L.; Arakelyants, M. M.; Kolesnikov, E. M.

doi:10.1080/00206819209465587

Cited by 26 publications

(39 citation statements)

References 3 publications

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“…Hispaniola and in the Yucatan basin (Larue, 1991;Schellekens, 1991;Abbott et al, 1999;García-Casco et al, 2001, 2008aEscuder-Viruete et al, 2006Mitchell, 2006;Stanek et al, 2009). HP rocks in these serpentinitematrix mélanges range in age from 130 to 60 Ma in the Greater Antilles (Somin and Millán, 1981;Somin et al, 1992;Iturralde-Vinent et al, 1996 that were incorporated in the serpentinite mélanges after the Cretaceous are mainly non-metamorphic thin-skinned accreted sedimentary units with Paleocene and early to middle Eocene foreland basin units offscraped from the downgoing slab and incorporated as deformed slivers in the serpentinite mélange (Iturralde-Vinent et al, 2008;van Hinsbergen et al, 2009). The NNE-SSW trending, 450 km long western Yucatan pull-apart basin (Rosencrantz, 1990) is reconstructed as a transform plate boundary, most likely developing above a slab edge (STEP-fault sensu Wortel, 2005, see van Benthem et al, 2013); this provides a minimum estimate for the amount of Greater Caribbean SSW-ward subduction since 70 Ma.…”

Section: Caribbean-north American Plate Boundary Evolution: Transformmentioning

confidence: 97%

“…K-Ar and U-Pb zircon ages from samples in HP-LT rocks range from~130 to 60 Ma, suggesting that subduction started not later than in the Early Cretaceous (Somin and Millán, 1981;Somin et al, 1992;Iturralde-Vinent et al, 1996;García-Casco et al, 2006;Lázaro et al, 2009;Rojas-Agramonte et al, 2010). Aptian amphibolite blocks from eastern Cuba record anomalously high geothermal conditions (~700°C and 14 to 15 kbar) and counterclockwise PTt-paths, suggesting that these blocks originated from very young subducted oceanic lithosphere (García-Casco et al, 2008b;Blanco-Quintero et al, 2010).…”

Section: Cuban Segmentmentioning

confidence: 97%

“…135-100 Ma 5.4.1. Caribbean-North/South American plate boundary evolution: origin of the Great Arc of the Caribbean K-Ar ages from samples of the HP metamorphic blocks in the Cuban serpentinite mélange range from~130 to 60 Ma (Somin and Millán, 1981;Somin et al, 1992) and the oldest arc magmatic rocks have been dated at 133 Ma (Rojas-Agramonte et al, 2011), indicating that subduction of the Proto-Caribbean Ocean started in at least the Hauterivian. Pindell et al (2012) modeled an age of 135 Ma for subduction initiation.…”

Section: Ma Reconstructionmentioning

confidence: 98%

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Kinematic reconstruction of the Caribbean region since the Early Jurassic

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Hinsbergen

Torsvik

et al. 2014

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300

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Section: Caribbean-north American Plate Boundary Evolution: Transformmentioning

confidence: 97%

Section: Cuban Segmentmentioning

confidence: 97%

Section: Ma Reconstructionmentioning

confidence: 98%

See 1 more Smart Citation

Kinematic reconstruction of the Caribbean region since the Early Jurassic

Boschman

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Torsvik

et al. 2014

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“…Caribeana is represented in Cuba by (1) the Cangre glaucophane-bearing terrane; (2) the Pinos metamorphic terrane; (3) the Escambray greenschist to eclogite facies complex with inverted metamorphic structure; and (4) the Asunción lawsonite and glaucophane-bearing terrane (Figs. 1B and 2; Somin and Millán, 1981;García-Casco et al, 2008;Despaigne et al, 2016).…”

Section: Caribeana Metamorphic Terranesmentioning

confidence: 99%

“…1B and 2) and is composed of deformed gabbros, basalts, basaltic andesites, and pyroclastic rocks that were deformed and metamorphosed into the greenschist and amphibolite facies (Somin and Millán, 1981;Blein et al, 2003). Concordant and crosscutting granitic-gneissic rocks occur as pre-metamorphic (ca.…”

Section: Mabujina Meta-arc Complexmentioning

confidence: 99%

The geology of Cuba: A brief overview and synthesis

Iturralde‐Vinent¹,

García-Casco²,

Rojas‐Agramonte³

et al. 2016

GSAT

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Cuba is the largest island in the Greater Antilles, and its geology records three important episodes: (1) the Jurassic breakup of North and South America (Pangea) and associated passive margin and oceanic sedimentary and magmatic evolution; (2) the sedimentary, magmatic, and metamorphic evolution of an intra-oceanic Cretaceous-Paleogene ophiolite-arc complex; and (3) the Paleogene "soft collision" and transfer of the NW Caribbean plate (and Cuba) to the North American plate. Thick sequences of JurassicCretaceous strata (conglomerates, sandstones, limestones, dolostones, shales) and interlayered basaltic rocks characterize passive margin sequences preserved in the Guaniguanico terrane (western Cuba, related to the Mayan passive margin and the Gulf of Mexico) and the Bahamas Platform borderlands (north of Cuba). Passive margin deposition ceased in latest Cretaceous time, when increasing relief of accreted (overriding) oceanic arc and ophiolite complexes shed coarse sediments (olistostrome and flysch), followed by carbonate deposition. Fragments of the intervening oceanic lithosphere (Proto-Caribbean, connected to the Central Atlantic) and fore-and back-arc oceanic lithosphere (Caribbean, of Pacific origin) occur as tectonic fragments detached from the ophiolitic units, including serpentinized harzburgites and dunites, banded and isotropic gabbros, basalts (tholeiitic and fore-arc basalts, locally with boninites) and Late Jurassic (Tithonian) through Late Cretaceous (Coniacian and younger) oceanic sediments. Arc activity in the Cuban segment of the Greater Antilles produced sedimentary, volcanic, and plutonic rocks during Cretaceous times (ca. 135-70 Ma). A new arc developed in eastern Cuba during Paleocene-middle Eocene times. Cuban arc sequences include island-arc tholeiitic, calcalkaline, and alkaline bimodal suites of volcanic and plutonic rocks. Remnants of ProtoCaribbean oceanic lithosphere occur as exhumed mélange-bearing eclogite-, blueschist-, and garnet-amphibolite-facies tectonic blocks (oldest age ca. 120 Ma) within a serpentinite matrix intercalated with, or at the base of, the overthrusted ophiolitic bodies. Cuban Cretaceous arc magmatic activity ended due The geology of Cuba: A brief overview and synthesis to the subduction of Proto-Caribbean passive margin sequences of the Caribeana terrane, an offshore protuberance of Yucatan. This event formed strongly deformed high-pressure metasedimentary and metaigneous rocks at ca. 70 Ma, when the Caribbean plate began to collide with North America. The collision, which included overriding of the ophiolitic and arc units over both subducted and unsubducted passive margin sequences, also produced synorogenic basins and filled them, a process that continued until ca. 40 Ma. This foldbelt was succeeded by local uplift and subsidence to form late Eocene-Recent unconformable post-orogenic continental basins.

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Age and Tectonic Significance of High-Pressure Metamorphic Rocks of Cuba

Cited by 26 publications

References 3 publications

Kinematic reconstruction of the Caribbean region since the Early Jurassic

Kinematic reconstruction of the Caribbean region since the Early Jurassic

The geology of Cuba: A brief overview and synthesis

Jadeitite formed during subduction: In situ zircon geochronology constraints from two different tectonic events within the Guatemala Suture Zone

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