Eastern Yucatan Continental Margin and Western Caribbean Tectonics

Uchupi, Elazar

doi:10.1306/83d90e58-16c7-11d7-8645000102c1865d

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…During the 1960s and 1970s, work on the deepwater slopes and abyssal plains of the Yucatan Basin included the acquisition and interpretation of marine gravity profiles, seismic reflection lines, and refraction lines (Bowin, 1968; Case, 1975; Del Castillo, 1974; Dillon & Vedder, 1973; Dillon et al., 1972; Edgar et al., 1971; Ewing et al., 1960; Uchupi, 1973; Vedder et al., 1973). These previous studies showed rapid changes in crustal thickness as one moved across the basin from the Yucatan continental margin, to the deep western basin, and the Cayman Ridge in the south.…”

Section: Results From Previous Studies Of the Yucatan Basinmentioning

confidence: 99%

“…The age of these sequences was only interpreted from correlations with sedimentary sequences from nearby locations by Binig (1990), who interpreted their age as Lower Cretaceous to recent. Uchupi (1973), Binig (1990), and Rosencrantz (1990) concluded that most of the siliciclastic sediments in the Yucatan Basin were derived from the large river systems of southwest Belize and Guatemala.…”

Section: Results From Previous Studies Of the Yucatan Basinmentioning

confidence: 99%

“…Additionally, the compilation and interpretation of the formation and age of Sequence 3 are in agreement with the seismic facies interpreted for it (Figure 8). The stronger and continuous acoustic reflectors interpreted as higher intercalations of sand bodies and shales are therefore associated with the evolution of the Belize Fan in the southwestern corner of the Yucatan Basin (Uchupi, 1973).…”

Section: Resultsmentioning

confidence: 99%

“…However, many oil exploratory wells were drilled during the 1970s along the western continental margin of the Yucatan Basin of Guatemala and Belize. These drilling results combined with the early refraction studies showed that the continental crust along the Yucatan margin is greater than 20 km in thickness (Uchupi, 1973) and consists of igneous and metamorphic rocks overlain by Paleozoic shales and Jurassic red beds that correlate with the San Cayetano Formation in Cuba (Pardo, 2009). Limestone deposited during the Cretaceous along the southwestern continental margin is overlain by siliciclastic rocks of Cenozoic age (Lodolo et al, 2009;Purdy et al, 1975) (Figure 2, column 1).…”

Section: Belize-yucatan Continental Margin Of the Western Yucatan Basinmentioning

confidence: 87%

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Late Cretaceous‐Recent Tectonostratigraphic Evolution of the Yucatan Back‐Arc Basin, Northern Caribbean Sea

Ramos,

Mann

2023

Geochem Geophys Geosyst

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The 110,000 km2 Yucatan Basin in the northern Caribbean Sea is critical for understanding the Late Cretaceous to Recent tectonic evolution of the Caribbean‐North American plate boundary. This study integrates gravity, magnetic, and a 5,500 km grid of 2D seismic data to carry out a tectonostratigraphic analysis of the Yucatan Basin. These data provide the first recognition of 38–102 km‐long spreading ridges that constrain a SW‐NE opening direction in the western Yucatan Basin. The age of this oceanic crust is constrained to be late Paleocene‐middle Eocene (57–42 Ma) based on heat flow measurements, depth‐to‐seafloor, and three sedimentary sequences inferred to be Eocene—Recent in age based on stratigraphic correlations to distant wells. We interpret the Yucatan Basin as a back‐arc basin formed during the northeastward movement of the Caribbean volcanic arc that is now exposed in Cuba, evolved during the early Cretaceous to middle Eocene, and was terminated by collision with the Bahama carbonate platform during the late Paleocene to middle Eocene. We identify regional, left‐lateral strike‐slip faults that extend into the Cuban volcanic arc, as observed in other active back‐arc basins. We propose that the Yucatan back‐arc basin once formed the northwestern extension of age‐equivalent back‐arc basins in Hispaniola, where the basin is inverted, topographically elevated, and strongly shortened, and in the Lesser Antilles where the Paleogene back‐arc basin has remained undeformed and submarine. This once‐continuous back‐arc basin was disrupted and left‐laterally offset by ∼500 km during the Late Eocene‐Recent formation of the Cayman trough strike‐slip system.

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Section: Results From Previous Studies Of the Yucatan Basinmentioning

confidence: 99%

Section: Results From Previous Studies Of the Yucatan Basinmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Belize-yucatan Continental Margin Of the Western Yucatan Basinmentioning

confidence: 87%

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Late Cretaceous‐Recent Tectonostratigraphic Evolution of the Yucatan Back‐Arc Basin, Northern Caribbean Sea

Ramos,

Mann

2023

Geochem Geophys Geosyst

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“…Paleomagnetic data used in this study were compiled from Montheil et al (2023). Seismic reflection data used in this study were compiled from Bangs et al (2003), Bunce et al (1969), Bowland and Rosencrantz (1988), Boynton et al (1979), Case et al (1990), Diebold et al (1981), Diebold et al (1999), Dillon et al (1972), Erlich and Pindell (2020), Kearey (1974), Ladd et al (1977), Ladd et al (1981), Ladd and Sheridan (1987), Lu and McMillen (1982), Mann et al (1995), Mauffret and Leroy (1997), Massaferro and Eberli (1999), Rodríguez-Zurrunero et al ( 2020), Sheridan et al (1981), Talwani et al (1976), Edgar et al (1971), Triezenberg et al (2016), Uchupi et al (1971), Uchupi (1973), and Watkins et al (1975). Seismic refraction data used in this study were compiled from: Bowin (1968), Bunce and Fahlquist (1962), Bunce et al (1969), Ebeniro et al (1986), Edgar et al (1971), J. I.…”

Section: Data Availability Statementmentioning

confidence: 99%

Crustal Structure, Deformational History, and Tectonic Origin of the Bahamas Carbonate Platform

Shipper,

Mann

2024

Geochem Geophys Geosyst

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The 2–10‐km‐thick, mainly carbonate cap of the 14,000 km2 Bahamas carbonate platform (BCP) has impeded imaging of its underlying crustal structure. The deeper structure of the BCP records both its Mesozoic rift and hotspot history and its later deformation related to its Paleogene collision with the Great Arc of the Caribbean (GAC). We use regional gravity data to model the crustal structure, type, and deformational processes of the BCP by: (a) integrating publicly available seismic data; (b) inverting the Moho along 2D regional gravity transects across the collisional zone; (c) modeling flexural uplift of a forebulge that reflects the attempted subduction of the BCP beneath the GAC; and (d) using downhole temperatures and radiogenic heat production in 1D basin models to differentiate crustal types related to the Mesozoic rift history. We interpret three crustal domains underlying the BCP: (a) 27–12‐km‐thick, rifted, and thinned continental crust of the northern Bahamas between the Blake Plateau and Exuma Sound; (b) 24–12‐km‐thick, volcanically‐thickened oceanic crust related to the Triassic‐Jurassic Bahamas hotspot in the central Bahamas southeast of Long Island; and (c) 20–12‐km‐thick, thickened oceanic crust north of Hispaniola. We propose that these crustal types reflect northwest‐southeastward, Triassic‐Jurassic rifting of the Bahamas region during the breakup of Pangea and accompanying magmatic activity related to the Triassic‐Jurassic Bahamas hotspot and early oceanic spreading. Growth of the BCP during the Cretaceous in this area was followed by Late Cretaceous‐Paleogene subduction‐related flexure and terminal Paleogene collision between the GAC and the BCP.

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The shelf of Cozumel, Mexico: Topography and organisms

Muckelbauer¹

1990

Facies

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Eastern Yucatan Continental Margin and Western Caribbean Tectonics

Cited by 13 publications

References 25 publications

Late Cretaceous‐Recent Tectonostratigraphic Evolution of the Yucatan Back‐Arc Basin, Northern Caribbean Sea

Late Cretaceous‐Recent Tectonostratigraphic Evolution of the Yucatan Back‐Arc Basin, Northern Caribbean Sea

Crustal Structure, Deformational History, and Tectonic Origin of the Bahamas Carbonate Platform

The shelf of Cozumel, Mexico: Topography and organisms

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