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GEOREF RECORD

Geology of the Azua and Enriquillo basins, Dominican Republic; 1, Neogene lithofacies, biostratigraphy, biofacies, and paleogeography

P. P. McLaughlin, W. A. van den Bold and Paul Mann
Geology of the Azua and Enriquillo basins, Dominican Republic; 1, Neogene lithofacies, biostratigraphy, biofacies, and paleogeography (in Geologic and tectonic development of the North America-Caribbean Plate boundary in Hispaniola, Paul Mann (editor), Grenville Draper (editor) and John F. Lewis (editor))
Special Paper - Geological Society of America (1991) 262: 337-366

Abstract

The Neogene stratigraphy of the Azua and Enriquillo basins of south-central Hispaniola (Dominican Republic) records the uplift history of central Hispaniola. The marine sequences change upward from deep-marine pelagic strata of the Sombrerito Formation to coastal clastic rocks of the Arroyo Blanco and Las Salinas Formations. A 2,000-m-thick southeastward-prograding turbidite sequence, the Trinchera Formation, reflects infilling of the Azua Basin. A transition from finer grained outer fan-type facies to coarser grained inner fan-type facies is evident in measured sections. Planktonic foraminiferal and ostracode evidence indicates that the marine section of the Azua basin extends from lower to upper Miocene in its northwestern part and from middle Miocene to lower Pliocene in its southern part. The shallow-marine and lagoonal section of the Enriquillo basin extends from the lower Pliocene upward. Benthic foraminiferal paleobathymetry from the Azua basin is consistent with lithofacies data and indicates shoaling from depths near the lower-middle bathyal boundary to marginal-marine depths. The Azua and Enriquillo basins evolved in two stages: a tectonically quiet open ocean stage before the late Miocene; and a tectonically active, laterally constrained clastic basin stage from the late Miocene to the present. The second stage records rapid uplift and erosion of the Cordillera Central of central Hispaniola and the formation of northwest west-northwest-striking ramp basins in south-central Hispaniola.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 262
Title: Geology of the Azua and Enriquillo basins, Dominican Republic; 1, Neogene lithofacies, biostratigraphy, biofacies, and paleogeography
Title: Geologic and tectonic development of the North America-Caribbean Plate boundary in Hispaniola
Author(s): McLaughlin, P. P.van den Bold, W. A.Mann, Paul
Author(s): Mann, Pauleditor
Author(s): Draper, Grenvilleeditor
Author(s): Lewis, John F.editor
Affiliation: Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States
Affiliation: University of Texas at Austin, Institute for Geophysics, Austin, TX, United States
Pages: 337-366
Published: 1991
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2262-4
References: 42
Accession Number: 1992-060986
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. charts, strat. col., 2 tables, sketch maps
N17°30'00" - N20°00'00", W72°00'00" - W68°19'60"
Secondary Affiliation: Florida International University, Department of Geology, Miami, FL, USA, United StatesGeorge Washington University, Geology Department, Washington, DC, USA, United StatesUniversity of Texas, Institute of Geophysics, Austin, TX, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1992
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