A Re‐Evaluation of Facies on Great Bahama Bank I: New Facies Maps of Western Great Bahama Bank

Reijmer, John J. G.; Bauch, Thorsten; Zechel, S.; Reuning, Lars; Otto, Robert S.; Swart, Peter K.; Roth, Sven

doi:10.1002/9781444312065.ch3

Cited by 53 publications

(135 citation statements)

References 49 publications

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“…This is similar to the shallow subtidal lagoon protected by oolitic shoals in the Great Bahama Bank in which mud and pellet facies-belts are complexly distributed (e.g. Purdy, 1963;Halley et al, 1983;Reijmer et al, 2009;Harris et al, 2015). In fact, in the lagoon of the Great Bahama Bank the percentage of mud increases towards the coast of Andros Island (e.g.…”

Section: Interpretation Of Facies Association Bmentioning

confidence: 71%

“…Wilkinson and Drummond, 2004;Suarez-Gonzalez et al, 2015), as it has been reported in numerous modern systems, such as Bahamas (e.g. Bathurst, 1975;Reijmer et al, 2009;Kaczmareck et al, 2010;Harris et al, 2015), Persian Gulf (e.g. Wagner and Van der Togt, 1973;Wilkinson and Drummond, 2004), Antigua (e.g.…”

Section: Depositional System and Evolution Of The Studied Units In Thmentioning

confidence: 99%

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Revisiting the Late Jurassic-Early Cretaceous of the NW South Iberian Basin: new ages and sedimentary environments

Campos-Soto

Benito

Mas

et al. 2016

Journal of Iberian Geology

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The study of the Upper Jurassic-Lower Cretaceous deposits (Higueruelas, Villar del Arzobispo and Aldea de Cortés Formations) of the South Iberian Basin (NW Valencia, Spain) reveals new stratigraphic and sedimentological data, which have significant implications on the stratigraphic framework, depositional environments and age of these units. Moreover, these new data encourage revising the previously proposed stratigraphic correlations between the studied units and those deposited in adjacent areas of the Iberian Basin.The Higueruelas Fm was deposited in a mid-inner carbonate platform where oncolitic bars migrated by the action of storms and where oncoid production progressively decreased towards the uppermost part of the unit. The overlying Villar del Arzobispo Fm has been traditionally interpreted as an inner platform-lagoon evolving into a tidal-flat. Here it is interpreted as an inner-carbonate platform affected by storms, where oolitic shoals protected a lagoon, which had siliciclastic inputs from the continent. The Aldea de Cortés Fm has been previously interpreted as a lagoon surrounded by tidal-flats and fluvial-deltaic plains. Here it is reinterpreted as a coastal wetland where siliciclastic muddy deposits interacted with shallow fresh to marine water bodies, aeolian dunes and continental siliciclastic inputs.The contact between the Higueruelas and Villar del Arzobispo Fms, classically defined as gradual, is interpreted here as gradual and rapid, because the transition between both units comprises few meters. More importantly, the contact between the Villar del Arzobispo and Aldea de Cortés Fms, previously considered as unconformable, is here interpreted as gradual.The presence of Alveosepta in the Villar del Arzobispo Fm suggests that at least part of this unit is Kimmeridgian, unlike the previously assigned Late Tithonian-Middle Berriasian age. Consequently, the underlying Higueruelas Fm, previously considered Tithonian, should not be younger than Kimmeridgian. Accordingly, sedimentation of the Aldea de Cortés Fm, previously considered Valanginian-Hauterivian, probably started during the Tithonian and it may be considered part of the regressive trend of the Late Jurassic-Early Cretaceous cycle. This is consistent with the dinosaur faunas, typically Jurassic, described in the Villar del Arzobispo and Aldea de Cortés Fms Keywords: Mixed carbonate-siliciclastic platform, coastal wetland, Foraminifera, Spain, Kimmeridgian, Tithonian Resumen El estudio de los depósitos del Jurásico Superior-Cretácico Inferior (formaciones Higueruelas, Villar del Arzobispo y Aldea de Cortés) de la Cuenca Suribérica (NO provincia de Valencia, E España) ha revelado nuevos datos estratigráficos y sedimentológicos, que tienen implicaciones importantes sobre el marco estratigráfico, el ambiente sedimentario y la edad de estas unidades. Además, estos nuevos datos sugieren que se deberían revisar las correlaciones estratigráficas realizadas previamente entre las unidades estudiadas y aquéllas depositadas en otras áreas adya...

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Section: Interpretation Of Facies Association Bmentioning

confidence: 71%

Section: Depositional System and Evolution Of The Studied Units In Thmentioning

confidence: 99%

Revisiting the Late Jurassic-Early Cretaceous of the NW South Iberian Basin: new ages and sedimentary environments

Campos-Soto

Benito

Mas

et al. 2016

Journal of Iberian Geology

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“…The Bahamas are a vast system of carbonate platforms (150,000 km 2 ) stretching in a NNW-SSE direction. Reefs, ooid shoals, or low-relief islands border the shallow-water areas of the platforms in which non-skeletal mud-rich sediments dominate (Purdy 1963a, b;Reijmer et al 2009;Fig. 2).…”

Section: Regional Geology and Geographymentioning

confidence: 99%

“…3, 6). The non-skeletal grains mainly consist of peloids, pellets, and ooids, grains that dominate the facies realms in the interior of Great Bahama Bank (Purdy 1963a, b;Enos 1974;Reijmer et al 2009) (Fig. 7).…”

Section: Summary Of Calciturbidites and Calcidebritesmentioning

confidence: 99%

Compositional variations in calciturbidites and calcidebrites in response to sea-level fluctuations (Exuma Sound, Bahamas)

Reijmer

Palmieri²,

Groen

2012

Facies

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The compositional variation of Pleistocene carbonate gravity deposits from the Exuma Sound Basin, Bahamas, was determined. Two types of gravity deposit were present in the cores of ODP Leg 101, Site 632A, i.e., calciturbidites and calcidebrites. In analogy with earlier studies, the compositional variations in the calciturbidites could be linked to different sources on the carbonate margin, i.e., platform interior, platform edge, and platform slope. Calciturbidites deposited during interglacial, sealevel highstands show a dominance of non-skeletal grains, largely derived from the platform interior, while calciturbidites of glacial, sea-level lowstands, show a dominance of skeletal platform-edge to platform-slope-derived grains. Thus, the calciturbidite composition can be used to reconstruct the position of absolute sea level. In addition, the mud content of the calciturbidites increased after Marine Isotope Stage 11. In contrast, the composition of the calcidebrites remained unaltered through time and showed a clear dominance of platform-edge-derived sediments during varying sea-level positions. The Bahamian carbonate platform is located in a tectonically stable passive-margin setting and the gravity-flow deposits were laid down in an environment exclusively controlled by eustatic sea-level fluctuations. This study shows that all types of gravity-induced carbonate deposits, calciturbidites, and calcidebrites, were deposited in response to global eustatic sea-level variations. The sediment composition could be linked directly to sediment input from specific facies realms along the carbonate platform margin. Hence, sediment composition analysis is a strong tool that may be used to discriminate between gravity-induced deposition triggered by eustatic sea-level changes and that related to tectonic events, when analyzing resedimentation processes in sedimentary basins.

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“…For example, aragonite needles represent up to 85-90% of the fine sediments on the Bahama banks (Milliman 1974;Heath and Mullins 1984;Reijmer et al 2009). Their origin has been extensively discussed with authors supporting a biogenic origin and others favouring inorganic precipitation.…”

Section: Introductionmentioning

confidence: 99%

Whiting-related sediment export along the Middle Miocene carbonate ramp of Great Bahama Bank

Turpin

Emmanuel²,

Reijmer³

et al. 2011

Int J Earth Sci (Geol Rundsch)

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Modern aragonite needles are present all along the modern leeward margin of Great Bahama Bank (ODP Leg 166), while Middle Miocene sediments contain needles only in more distal areas (Sites 1006 and 1007). In contrast to the rimmed, flat-topped platform topography during the Plio-Pleistocene, the Miocene Great Bahama Bank morphology is a carbonate ramp profile. This might imply a different location and precipitation type for Miocene aragonite needles. In this study, aragonite needles in Miocene sediments were isolated using a granulometric separation method. Furthermore, the isolation of the various carbonate components enables the identification of primary versus diagenetic components. The Miocene aragonite needles are concentrated in the finest granulometric sediment fractions (\12 lm). The fraction-specific geochemical analyses (d 13 C, d 18 O and Sr elemental abundance) represent useful tools to assess the possible sources of the aragonite mud. The geochemical variation of the fractions, rich in pristine aragonite needles, and the characteristics of the needle morphology point to whiting phenomena as the main sediment source and algal fragmentation as a minor component. Both components indicate shallow-water environments as the main sediment source area. Ramp-top-related fine-grained particles now present at distal sites were likely exported as suspended material similar to present-day transport mechanisms. The scarcity of needles at proximal sites is probably linked to hydrodynamic processes but dissolution and recrystallization processes cannot be excluded. The granulometric separation approach applied here enables a better characterization of the finest carbonate particles representing an important step towards the discrimination between primary and diagenetic fine-grained components.

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A Re‐Evaluation of Facies on Great Bahama Bank I: New Facies Maps of Western Great Bahama Bank

Cited by 53 publications

References 49 publications

Revisiting the Late Jurassic-Early Cretaceous of the NW South Iberian Basin: new ages and sedimentary environments

Revisiting the Late Jurassic-Early Cretaceous of the NW South Iberian Basin: new ages and sedimentary environments

Compositional variations in calciturbidites and calcidebrites in response to sea-level fluctuations (Exuma Sound, Bahamas)

Whiting-related sediment export along the Middle Miocene carbonate ramp of Great Bahama Bank

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