Carbonate lithofacies as paleolatitude indicators: problems and limitations

Carannante, Gabriele; Esteban, Mateu; Milliman, John D.; Simone, Lucia

doi:10.1016/0037-0738(88)90128-5

Cited by 296 publications

(224 citation statements)

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“…However, they also occur in the tropics where the oceanographic situation suppresses typical tropical chlorozoan carbonates Simone and Carannante 1988;Hallock et al 1988;Carannante et al 1988). Controls that influence the formation of heterozoan versus chlorozoan carbonates in the tropics include temperature, salinity, water depth, trophic conditions, oxygen and CO 2 concentrations and Mg/Ca ratio in the seawater, alkalinity, morphology and bathymetry of the sea-floor, the type of substrate, transparency of the water column, internal waves and water stratification (Hallock and Schlager 1986;Hallock et al 1988;Carannante et al 1988;Bourrouilh-Le Jan and Hottinger 1988;Stanley and Hardie 1998;Ward 1995, 1999;Pomar 2001a;Mutti and Hallock 2003;Pomar et al 2004;Wright and Burgess 2005). Some of these conditions are strongly influenced by coupled atmospheric and oceanographic circulation patterns.…”

Section: Carbonate Grain Associations As Climate and Latitudinal Indimentioning

confidence: 99%

“…Westphal et al 2010). This includes oceanographic parameters such as seasonality, trophic conditions, temperature, and salinity (Lees and Buller 1972;Carannante et al 1988). In contrast, studies of ancient carbonate systems have traditionally focused on the interpretation of temperature and relative sea-level position (e.g., Kendall and Schlager 1981;Handford and Loucks 1993).…”

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confidence: 99%

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Heterozoan carbonates in subtropical to tropical settings in the present and past

Westphal

Halfar

Freiwald

2010

Int J Earth Sci (Geol Rundsch)

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Water temperature has received considerable attention as steering factor for the genesis of different types of marine carbonate sediments. However, parameters other than temperature also strongly influence ecosystems and, consequently, the carbonate grain associations in the resulting carbonate rock. Among those factors are biological evolution, water energy, substrate, water chemistry, light penetration, trophic conditions, CO 2 concentrations, and Mg/Ca ratios in the seawater. Increased nutrient levels in warm-water settings, for example, lead to heterotrophicdominated associations that are characteristic of temperate to cool-water carbonates. Failure to recognize the influence of such environmental factors that shift the grain associations towards heterotrophic communities in low latitudes can lead to misinterpretation of climatic conditions in the past. Modern analogues of low-latitude heterozoan carbonates help to recognize and understand past occurrences of heterozoan warm-water carbonates. Careful analysis of such sediments therefore is required in order to achieve robust reconstructions of past climate.

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Section: Carbonate Grain Associations As Climate and Latitudinal Indimentioning

confidence: 99%

mentioning

confidence: 99%

Heterozoan carbonates in subtropical to tropical settings in the present and past

Westphal

Halfar

Freiwald

2010

Int J Earth Sci (Geol Rundsch)

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“…The differentiation between non-tropical and tropical carbonates is mainly based on analysis of skeletal components (Lees and Buller, 1972;Carannante et al, 1988;Nelson, 1988). The foraminiferal associations such as Dendritina, Archaias, Borelis, Spiroclypeus, Lepidocyclina, Neorotalia, and Amphistegina within the Asmari Formation suggest that carbonate sedimentation took place in tropical to subtropical latitudes.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, the Asmari Formation is dominated by heterozoan assemblages. Heterozoan carbonates can develop on a carbonate ramp (Carannante et al, 1988;Jones and Desrochers, 1992;Boreen and James, 1995;Feary, 1995;Brachert et al, 1998). The spread of heterozoan assemblages related to the low capacity of corals to thrive in high-light conditions and to form a wave-resistant reef promoted the distribution of heterozoan assemblages (Brandano et al, 2009a;Rahmani et al, 2009;Allahkarampour Dill et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Biostratigraphy and paleoecology of the Oligo-Miocene Asmari Formation in the Izeh zone (Zagros Basin, SW Iran)

Taheri

Vaziri-Mogaddam

Taheri

et al. 2017

BSGM

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RESUMEN ABSTRACTIn this study, biostratigraphy and paleoecology of the Asmari Formation have been investigated. The study area is located in the Izeh zone, Zagros Basin. Four outcrop sections (Halayjan, Kuh Shur, Kuh-e Bad and Gharibi Ha) have been sampled. Based on distribution of the larger benthic and planktonic foraminifera, five assemblage zones have been recognized. Assemblages 1 and 2 indicate Chattian; assemblage 3 is restricted to Aquitanian and assemblages 4 and 5 suggest Burdigalian. During the Chattian, the carbonate deposits of the Asmari Formation are mostly composed of coralline red algae and large and flat benthic foraminifera. The common components of the Aquitanian are abundant imperforate foraminifera and Favreina asmaricus. The Burdigalian is characterized by coral, coralline algae, and perforate and imperforate foraminifera. During the Burdigalian toward the SE of study area (Gharibi Ha section), the shallow water deposits are abruptly overlain by pelagic limestone. It is interpreted as the result of a regional tilting that started in the upper part of the Burdigalian. The biotic associations suggest that carbonate sedimentation occurred in tropical to subtropical waters under oligotrophic to mesotrophic conditions. The carbonate grain associations in the Asmari Formation suggest heterozoan association. According to paleoecological parameters (such as: nutrient, depth, light and salinity) in the study area, the Asmari Formation belongs to nannofor-foralgal to foramol association which were deposited in slightly hyper to normal saline environment. In the euphotic zone, abundant imperforate foraminifera are present. Basinward, lens shaped rotalids developed in mesophotic conditions, and large lepidocyclinid-nummulitids characterize the sediments of the deeper oligophotic zone.Keywords: Asmari Formation, Oligocene-Miocene, biostratigraphy, paleoecology, larger benthic foraminifera, Zagros Basin.

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“…A sedimentação atualé principalmente carbonática algálica, com ausência de corais hermatípicos (Milliman, 1977;Carannante et al, 1988). As fáceis relacionadas ocorrem a profundidades maiores que 15 m, abrigadas da ação das ondas (Silva Filho, 2004).…”

Section: Localização E Contexto Oceanográficounclassified

Estruturas rasas na margem equatorial ao largo do nordeste brasileiro (Estado do Ceará): análise de relevo e anomalias gravimétricas residuais

Filho¹,

Castro²,

Corrêa³

et al. 2007

Rev. Bras. Geof.

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ABSTRACT. The area of study is located in the atlantic equatorial margin shelf offshore Ceará State (Brazil), being originated during the formation of Equatorial Atlantic (Aptian). The residual gravity data highlight offshore continental framework structures, specially the Transbrasiliano Lineament and its offshore portion (Transversal Lineament). The continental margin basins (Ceará and offshore Potiguar) were also highlighted. The relief anomaly map shows that the superficial features are controlled by NE-SW precambrian structures, mainly in the segment offshore Acaraú. In the outer shelf offshore Camocim, this control is due to both NW-SE and E-W features, probably related to transform tectonics in the Piauí-Camocim Sub-basin. E-W trends, possibly related to oceanic fractures, and NW-SE trends, probably related to precambrian structures, are characteristic of the central sector. The southeastern sector presents shelf sub parallel trends that approach contact between shallow basement and the offshore Potiguar basin. The neotectonic stress state is inferred as wrench-type with maximum horizontal stress sub parallel to the margin trend (mainly acting in the inner shelf) and extensional with minimum horizontal stress sub orthogonal to the margin trend (mainly in the outer shelf).Keywords: continental shelf, equatorial margin, gravimetry, relief analysis, shallow structures. RESUMO.Aárea pesquisada localiza-se na plataforma continental da margem equatorial atlântica, ao largo do Estado do Ceará, formada durante a abertura do oceano Atlântico Equatorial (Aptiano). O mapa gravimétrico residual evidencia estruturas do arcabouço crustal continental ao largo daárea estudada, em especial o Lineamento Transbrasiliano e sua continuação offshore (Lineamento Transversal). As bacias da margem continental (Ceará e Potiguar submersa) são bem marcadas por mínimos gravimétricos. O mapa de anomalias de relevo demonstra que estruturas pré-cambrianas de trend NE-SW controlam feições superficiais, principalmente ao largo de Acaraú. Já na plataforma externa ao largo de Camocim, o controleé exercido por feições NW-SE e E-W, possivelmente relacionadasà deformação transformante na Subbacia Piauí-Camocim. No setor central, há a influência de trends E-W, possivelmente relacionados a fraturas oceânicas, e trends NW-SE, provavelmente relacionados a estruturas pré-cambrianas. Já no setor sudeste, trends subparalelosà direção da plataforma aproximam-se do contato entre embasamento raso e Bacia Potiguar

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Carbonate lithofacies as paleolatitude indicators: problems and limitations

Cited by 296 publications

References 13 publications

Heterozoan carbonates in subtropical to tropical settings in the present and past

Heterozoan carbonates in subtropical to tropical settings in the present and past

Biostratigraphy and paleoecology of the Oligo-Miocene Asmari Formation in the Izeh zone (Zagros Basin, SW Iran)

Estruturas rasas na margem equatorial ao largo do nordeste brasileiro (Estado do Ceará): análise de relevo e anomalias gravimétricas residuais

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