Transpression and strain partitioning in the Caribbean Island-arc: Fabric development, kinematics and Ar–Ar ages of syntectonic emplacement of the Loma de Cabrera batholith, Dominican Republic

2006 ◽  
Vol 28 (8) ◽  
pp. 1496-1519 ◽  
Author(s):  
J. Escuder Viruete ◽  
F. Contreras ◽  
G. Stein ◽  
P. Urien ◽  
M. Joubert ◽  
...  
Keyword(s):  
Dominican Republic ◽  
Island Arc ◽  
Strain Partitioning ◽  
Caribbean Island ◽  
The Caribbean

Two new species of flattie spiders (Araneae: Selenopidae) and descriptions of undescribed males from the Caribbean

Zootaxa ◽  
2018 ◽  
Vol 4446 (1) ◽  
pp. 125
Author(s):  
SARAH C. CREWS
Keyword(s):  
New Species ◽  
Dominican Republic ◽  
Endemic Species ◽  
New Records ◽  
Caribbean Island ◽  
Two New Species ◽  
The Caribbean

Two new species of Selenops, S. anacaona sp. nov. (♀) and S. caonabo sp. nov. (♀), are described from the Dominican Republic on the Caribbean island of Hispaniola. These two new species increase the number of endemic Selenops on Hispaniola to 13, surpassing Cuba, which currently has 11 endemic species. Additionally, the male of S. pensilis Muma, 1953 from Hispaniola is described, as well as the male of S. petrunkevitchi Alayón, 2003 from Jamaica. Full distribution records are given for the new species and the newly described males, and new records are provided for the following species: S. aequalis Franganillo, 1935, S. bocacandensis Crews, 2011, S. candidus Muma, 1953, S. micropalpus Muma, 1953, S. morro Crews, 2011, S. simius Muma, 1953, S. souliga Crews, 2011, and S. submaculosus Bryant, 1940. 

scholarly journals The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc-continent collision and ophiolite emplacement in the northern Caribbean subduction-accretionary prism

2015 ◽  
Vol 7 (2) ◽  
pp. 1827-1876 ◽  
Author(s):  
J. Escuder-Viruete ◽  
A. Suárez-Rodríguez ◽  
J. Gabites ◽  
A. Pérez-Estaún
Keyword(s):  
Subduction Zone ◽  
Continental Margin ◽  
Middle Eocene ◽  
Accretionary Prism ◽  
Island Arc ◽  
Caribbean Island ◽  
Stratigraphic Sequence ◽  
Oblique Collision ◽  
The Caribbean ◽  
Ophiolitic Complex

Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic "mélange" originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation from a pre-collisional forearc to a syn-collisional piggy-back basin. This piggy-back basin was transported on top of the Puerto Plata ophiolitic complex slab and structurally underlying accreted units of the Rio San Juan complex, as it was emplaced onto the North America continental margin units. The Imbert Fm unconformably overlies different structural levels of the Caribbean subduction-accretionary prism, including a supra-subduction zone ophiolite, and consists of three laterally discontinuous units that record the exhumation of the underlying basement. The distal turbiditic lower unit includes the latest volcanic activity of the Caribbean island arc; the more proximal turbiditic intermediate unit is moderately affected by syn-sedimentary faulting; and the upper unit is a (caotic) olistostromic unit, composed of serpentinite-rich polymictic breccias, conglomerates and sandstones, strongly deformed by syn-sedimentary faulting, slumping and sliding processes. The Imbert Fm is followed by subsidence and turbiditic deposition of the overlying El Mamey Group. The 40Ar / 39Ar plagioclase plateau ages obtained in gabbroic rocks from the Puerto Plata ophiolitic complex indicate its exhumation at ∼ 45–40 Ma (lower-to-middle Eocene), contemporaneously to the sedimentation of the overlying Imbert Fm. These cooling ages imply the uplift to the surface and submarine erosion of the complex to be the source of the ophiolitic fragments in the Imbert Fm, during of shortly after the emplacement of the intra-oceanic Caribbean island-arc onto the continental margin.

scholarly journals Reconstructing the crustal section of the intra-oceanic Caribbean island arc: contraints from the cumulate layered gabbronorites and pyroxenites of the Rio Boba plutonic sequence, northern Dominican Republic

2022 ◽  
Author(s):  
Javier Escuder-Viruete ◽  
Mercedes Castillo-Carrión ◽  
Fernando Pérez Valera ◽  
Pablo Valverde-Vaquero ◽  
Álvaro Rubio Ordónez ◽  
...  
Keyword(s):  
Dominican Republic ◽  
Island Arc ◽  
Caribbean Island

scholarly journals Last Endemic Mammals in Hispaniola

Oryx ◽  
1981 ◽  
Vol 16 (2) ◽  
pp. 146-152 ◽  
Author(s):  
Charles A. Woods
Keyword(s):  
Dominican Republic ◽  
Caribbean Island ◽  
The Caribbean

After searching many remote regions in the Caribbean island of Hispaniola, the author discovered that the island's last two endemic mammals, formerly believed to be rare, are in fact common in some areas. But human pressures on the hutia Plagiodonria aedium and the solenodon S. paradoxus are such that, unless the Governments of Haiti and the Dominican Republic take effective steps both could soon become extinct.

scholarly journals Reconstructing the crustal section of the intra-oceanic Caribbean island arc: contraints from the cumulate layered gabbronorites and pyroxenites of the Rio Boba plutonic sequence, northern Dominican Republic

2021 ◽  
Author(s):  
Javier Escuder-Viruete ◽  
Mercedes Castillo-Carrión ◽  
Fernando Pérez Valera ◽  
Pablo Valverde-Vaquero ◽  
Álvaro Rubio Ordónez ◽  
...  
Keyword(s):  
Dominican Republic ◽  
Island Arc ◽  
Caribbean Island

Magmatic relationships and ages of Caribbean Island arc tholeiites, boninites and related felsic rocks, Dominican Republic

Lithos ◽  
2006 ◽  
Vol 90 (3-4) ◽  
pp. 161-186 ◽  
Author(s):  
J. Escuder Viruete ◽  
A. Díaz de Neira ◽  
P.P. Hernáiz Huerta ◽  
J. Monthel ◽  
J. García Senz ◽  
...  
Keyword(s):  
Dominican Republic ◽  
Island Arc ◽  
Caribbean Island ◽  
Felsic Rocks

scholarly journals The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc–continent collision and ophiolite emplacement in the northern Caribbean subduction–accretionary prism

Solid Earth ◽  
2016 ◽  
Vol 7 (1) ◽  
pp. 11-36 ◽  
Author(s):  
J. Escuder-Viruete ◽  
Á. Suárez-Rodríguez ◽  
J. Gabites ◽  
A. Pérez-Estaún
Keyword(s):  
Subduction Zone ◽  
Continental Margin ◽  
Middle Eocene ◽  
Accretionary Prism ◽  
Island Arc ◽  
Caribbean Island ◽  
Stratigraphic Sequence ◽  
Oblique Collision ◽  
The Caribbean ◽  
Ophiolitic Complex

Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic “mélange” originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation from a pre-collisional forearc to a syn-collisional basin. This basin was transported on top of the Puerto Plata ophiolitic complex slab and structurally underlying accreted units of the Rio San Juan complex, as it was emplaced onto the North America continental margin units.The Imbert Fm unconformably overlies different structural levels of the Caribbean subduction-accretionary prism, including a supra-subduction zone ophiolite, and consists of three laterally discontinuous units that record the exhumation of the underlying basement. The distal turbiditic lower unit includes the latest volcanic activity of the Caribbean island arc; the more proximal turbiditic intermediate unit is moderately affected by syn-sedimentary faulting; and the upper unit is a (chaotic) olistostromic unit, composed of serpentinite-rich polymictic breccias, conglomerates and sandstones, strongly deformed by syn-sedimentary faulting, slumping and sliding processes. The Imbert Fm is followed by subsidence and turbiditic deposition of the overlying El Mamey Group.The 40Ar ∕ 39Ar plagioclase plateau ages obtained in gabbroic rocks from the Puerto Plata ophiolitic complex indicate its exhumation at  ∼  45–40 Ma (lower-to-middle Eocene), contemporaneously to the sedimentation of the overlying Imbert Fm. These cooling ages imply the uplift to the surface and submarine erosion of the complex to be the source of the ophiolitic fragments in the Imbert Fm, during or shortly after the emplacement of the intra-oceanic Caribbean island arc onto the continental margin.

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