Ecological control of sedimentary accommodation: evolution from a carbonate ramp to rimmed shelf, Upper Miocene, Balearic Islands

Pomar, Luis

doi:10.1016/s0031-0182(01)00375-3

Cited by 202 publications

(170 citation statements)

References 54 publications

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“…Interpretation: The presence of high diverse stenohaline fauna such as red algae, echinoid and larger foraminifera [like Neorotalia, and Heterostegina] indicate that the sedimentary environment was situated in the oligophotic zone in a shallow open marine environment [22]- [25]. The texture of this facies indicate moderate to high energy shallow waters with much movement.…”

Section: Microfacies 3) Corallinacean Neorotalia Heterostegina Grainsmentioning

confidence: 99%

Sedimentary Environment and Sequence Stratigraphy of the Asmari Formation at Khaviz Anticline, Zagros Mountains, Southwest Iran

Kangazian¹,

Pasandideh²

2016

OJG

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The Oligocene-Miocene Asmari Formation is a thick sequence of shallow water carbonates of the Zagros Basin. Khaviz Anticline outcrop [near Behbahan city/Iran] was studied in this research in order to interpret the facies, depositional environment and sequence stratigraphy of the Asmari Formation succession. In this study, twelve different microfacies types have been recognized, which can be grouped into five (micro) facies associations: peritidal, lagoon, shoal, semi restricted marine and open marine. The Asmari Formation represents sedimentation on a carbonate ramp. According to the fauna data, the Asmari Formation is Oligocene (Rupelian/Chattian) to Early Miocene (Burdigalian) in age at the study area. Eight third-order depositional sequences are identified on the basis of deepening and shallowing patterns in the microfacies. The depositional sequences 0 and 1 (Rupelian-Chattian), 2, 3 and 4 (Chattian) were referred to the lower while sequences 5 and 6 (Aquitanian) were referred to the middle and sequence 7 (Burdigalian) was referred to the upper Asmari Formation. The relative sea-level curve of the Asmari basin and its matching with the global sea-level curves documented that Global eustatic phenomena affected this basin.

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Section: Microfacies 3) Corallinacean Neorotalia Heterostegina Grainsmentioning

confidence: 99%

Sedimentary Environment and Sequence Stratigraphy of the Asmari Formation at Khaviz Anticline, Zagros Mountains, Southwest Iran

Kangazian¹,

Pasandideh²

2016

OJG

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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%

“…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). More recent studies of ancient carbonates emphasize the influence of trophic conditions and ocean chemistry among other factors (Pomar 2001a;Hallock 2001;Pomar et al 2004).…”

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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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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“…Paleoecology of Oligocene and Miocene carbonate platforms are studied by many authors with different points of view (e.g., Hallock and Glenn, 1986;Hottinger, 1997;Pedley, 1998;Geel, 2000;Pomar, 2001;Romero et al, 2002;Beavington-Penney et al, 2009a, b;Bassi and Nebelsick, 2010;Flügel, 2010;Pomar et al, 2012). In this study the most significant paleoecological elements such as salinity, light penetration, nutrients, temperature and water depth are discussed in detail.…”

Section: Paleoecological Interpretationmentioning

confidence: 93%

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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Ecological control of sedimentary accommodation: evolution from a carbonate ramp to rimmed shelf, Upper Miocene, Balearic Islands

Cited by 202 publications

References 54 publications

Sedimentary Environment and Sequence Stratigraphy of the Asmari Formation at Khaviz Anticline, Zagros Mountains, Southwest Iran

Sedimentary Environment and Sequence Stratigraphy of the Asmari Formation at Khaviz Anticline, Zagros Mountains, Southwest Iran

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)

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