Chapter 16 Sequence stratigraphy of the eastern Venezuelan basin

Croce, Juan Di; Bally, A. W.; Vail, Peter R.

doi:10.1016/s1874-5997(99)80050-1

Cited by 35 publications

(61 citation statements)

References 18 publications

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“…1A,B) is commonly perceived as a site of ongoing dextral oblique collision or transpression involving a component of N-S contraction (e.g., Speed, 1985). This misperception is caused by the recognition of widespread SE-directed folding and thrusting across the region (e.g., Case and Holcombe, 1980;Hung, 2005), as well as by the ongoing rapid subsidence in the large, asymmetric Maturín-Southern Basin foredeep (e.g., Di Croce et al, 1999). However, the perception is not strictly valid, because the relative motion between the Caribbean and South American plates in the ESCPBZ has an azimuth of 085° (N85E), meaning dextral slip, and is occurring at 20 mm/yr.…”

Section: Perspectives On Today's Eastern South Caribbean Plate Boundamentioning

confidence: 99%

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Cenozoic Kinematics and Dynamics of Oblique Collision Between two Convergent Plate Margins: The Caribbean-South America Collision in Eastern Venezuela, Trinidad and Barbados

Pindell¹,

Kennan²

2007

The Paleogene of the Gulf of Mexico and Caribbean Basins: Processes, Events, and Petroleum Systems: 27th Annual

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Numerous structural, tectonic, and geometric aspects of the Eastern South Caribbean Plate Boundary Zone are assessed or reassessed in the light of seismic reflection data, field studies from 2000-2007, heavy mineral analysis, updated interpretation of seismic tomography, seismicity, GPS data, and refined plate kinematic constraints for the Cenozoic. We show that the Cretaceous passive margin of northern South America was transformed to a north-facing, slowly convergent margin in the Late Maastrichtian, and that the collision between the Caribbean and South America was a collision of two convergent margins above an intervening, "doubly subducting" Proto-Caribbean oceanic lithosphere. The new assessments are iteratively integrated to create semi-quantitative palinspastic reconstructions for 5, 10, 25, 31 and 42 Ma, on which paleogeographies are developed. The origin of key sandstone units are considered, due to their importance as major reservoirs, as well as the implications of the kinematic and dynamic modeling for structural timing. The primary collision between the two plates was completed by 10 Ma, with subsequent motion being essentially E-W strike slip, the deformations of which are driven mainly in a bow-wave model of transcurrent simple shear.

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Section: Perspectives On Today's Eastern South Caribbean Plate Boundamentioning

confidence: 99%

“…In this section, the regional level of Cretaceous strata in the Columbus Channel is constrained by Venezuelan seismic lines (e.g. di Croce et al, 1999); top Cretaceous shallows from about 7.5s (ca. 12 km?)…”

Section: Geometry and Age Of Structures In The Southernmentioning

confidence: 99%

Cenozoic Kinematics and Dynamics of Oblique Collision Between two Convergent Plate Margins: The Caribbean-South America Collision in Eastern Venezuela, Trinidad and Barbados

Pindell¹,

Kennan²

2007

The Paleogene of the Gulf of Mexico and Caribbean Basins: Processes, Events, and Petroleum Systems: 27th Annual

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“…Unit 2 thickens slightly from 1.3 km at the northern edge of the profile to 1.9 km at km À73, then varies between 1.5 km and 2.0 km thickness to km À39, where it terminates against Unit 3. We interpret Unit 2 to be Paleogene siliciclastics that have been deformed by underthrusting of the Venezuela Basin beneath La Blanquilla High, coeval with the Early to Middle Miocene transpression observed in basins to the south [Aitken, 2005;Bouysse, 1988;Di Croce et al, 1999;Ysaccis, 1997].…”

Section: Bolivar Offshore Mcs Resultsmentioning

confidence: 89%

“…In locations where Unit 1 is not flat (e.g., km À57), reflectors generally parallel the underlying topography of Unit 2. We interpret Unit 1 to represent tectonically quiescent deepwater siliciclastics overlying the Middle Miocene unconformity [Aitken, 2005;Di Croce et al, 1999;Ysaccis, 1997], making Unit 1 Middle Miocene to Recent in age.…”

Section: Bolivar Offshore Mcs Resultsmentioning

confidence: 99%

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Negligible convergence and lithospheric tearing along the Caribbean–South American plate boundary at 64°W

Clark¹,

Levander

Magnani

et al. 2008

Tectonics

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Prior studies of the Caribbean–South American plate boundary have suffered from poor constraint on the structure of the crust and uppermost mantle. We use a recent wide‐angle velocity model from the Broadband Ocean‐Land Investigation of Venezuela and the Antilles arc Region project to constrain new seismic reflection data and previously published line drawing interpretations of the Caribbean–South American plate boundary at 64°W. Though commonly characterized as obliquely convergent, we determine that convergence is negligible in our study area. Previous estimates of Miocene to present north‐south shortening onshore eastern Venezuela have commonly been 115 km or higher, but we constrain shortening to ∼35 km onshore, with an additional ∼30 km offshore. With such minor convergence, we conclude that uplift and basin subsidence in eastern Venezuela does not derive from typical collisional orogeny. Instead, the largely vertical tectonics likely result from mantle dynamics associated with an eastward propagating, near‐vertical tear in the lithosphere along the former passive margin.

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Palaeo-Orinoco (Pliocene) channels on the tide-dominated Morne L'Enfer delta lobes and estuaries, SW Trinidad

Chen

Steel

Olariu

2015

Developments in Sedimentology

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Chapter 16 Sequence stratigraphy of the eastern Venezuelan basin

Cited by 35 publications

References 18 publications

Cenozoic Kinematics and Dynamics of Oblique Collision Between two Convergent Plate Margins: The Caribbean-South America Collision in Eastern Venezuela, Trinidad and Barbados

Cenozoic Kinematics and Dynamics of Oblique Collision Between two Convergent Plate Margins: The Caribbean-South America Collision in Eastern Venezuela, Trinidad and Barbados

Negligible convergence and lithospheric tearing along the Caribbean–South American plate boundary at 64°W

Palaeo-Orinoco (Pliocene) channels on the tide-dominated Morne L'Enfer delta lobes and estuaries, SW Trinidad

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