Origin of Cariaco Basin, southern Caribbean Sea

Schubert, Carlos

doi:10.1016/0025-3227(82)90076-7

Cited by 56 publications

(39 citation statements)

References 16 publications

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“…The Bonaire basin opened within the pull-apart zone of deformation and extended westward to develop the Falcón basin [Audemard, 1998]. Continued motion along the San Sebastian -El Pilar fault system is also related to the pull-apart of the Cariacao basin in the Quaternary [Schubert, 1982]; east of the Bonaire basin.…”

Section: F 2 Rotationmentioning

confidence: 99%

Oblique collision and accretion of the Netherlands Leeward Antilles to South America

Beardsley

Lallemant

2007

Tectonics

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Accretion of the Netherlands Leeward Antilles volcanic island arc to northern South America (offshore Venezuela) was accompanied by deformation and clockwise block rotation. Structural analysis of Aruba, Curaçao, and Bonaire indicates that they were deformed during at least one ductile event (D1) and three brittle events (F1 − F3). The first deformation phase (D1 and F1) began in the Early Cretaceous, at approximately 110 Ma. Deformation features are consistent with displacement partitioning at the obliquely convergent Caribbean‐Atlantic (proto‐Caribbean) plate boundary. This deformation was accompanied by an approximate 90° clockwise rotation of the forearc terrane. The onset of the second phase of deformation (F2) occurred in the Eocene (∼55 Ma), also accompanied by a small amount of rotation, and structures are consistent with wrench tectonics in a pull‐apart regime. This coincided with the collision of the Caribbean plate with the Great Bahama Bank and the initiation of convergence between North and South America. The youngest deformation structures and rotation (F3) are also associated with wrench faulting. Likely, motion along the Oca fault and the Caribbean plate transform fault initiated a major restraining bend in the late Paleogene. Beginning ∼12 Ma, the northeastward escape of the Maracaibo block further increased the complexity of tectonism at the Caribbean–South American plate boundary. Deformation structures are consistent with a total of 135° clockwise rotation of the Leeward Antilles islands and regional diachronous deformation from west to east since the Early Cretaceous.

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Section: F 2 Rotationmentioning

confidence: 99%

Oblique collision and accretion of the Netherlands Leeward Antilles to South America

Beardsley

Lallemant

2007

Tectonics

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“…The Virgin Islands Basin has a prominent analogy with a pull-apart basin (Mauffret et al, 1986;Lithgow et al, 1987). It is divided into two basins like the Cariaco Basin, Southern Caribbean (Schubert, 1982) and the Elat (Aqaba) Basin, Northern Red Sea (Ben Avraham et al, 1979;Ben Avraham 1985). The dimension (length versus width) fits well with the curves characterizing pull-apart basins and plotted by Aydin and Nur (1982).…”

Section: Strike-slip Faultingmentioning

confidence: 98%

Geological interpretation of combined Seabeam, Gloria and seismic data from Anegada Passage (Virgin Islands, north Caribbean)

1990

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“…Also, unlike Saanich Inlet and Cariaco, the oxic/ anoxic interface of Framvaren Fjord lies in the photic zone and contains signi fi cantly higher sul fi de levels. The Cariaco Basin has remained anoxic for millions of years (Schubert, 1982 ) and experiences only limited oxygen intrusion events (Lin et al, 2008 ) , while the Saanich Inlet experiences only seasonal anoxia. Because Cariaco has been anoxic for a longer period of time, this likely allowed for a higher amount of speciation of anaerobic protists relative to Saanich Inlet.…”

Section: Comparison Of Protist Communities In Saanich Inlet Cariaco mentioning

confidence: 99%

Microbial Eukaryotes in Marine Oxygen Minimum Zones

Orsi

Edgcomb

2013

Cellular Origin, Life in Extreme Habitats and Astrobiology

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Origin of Cariaco Basin, southern Caribbean Sea

Cited by 56 publications

References 16 publications

Oblique collision and accretion of the Netherlands Leeward Antilles to South America

Oblique collision and accretion of the Netherlands Leeward Antilles to South America

Geological interpretation of combined Seabeam, Gloria and seismic data from Anegada Passage (Virgin Islands, north Caribbean)

Microbial Eukaryotes in Marine Oxygen Minimum Zones

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