Carbonate platform sequence stratigraphy in a rapidly subsiding area: the Late Barremian–Early Aptian of the Organyà basin, Spanish Pyrenees

Bernaus, Josep María; Arnaud‐Vanneau, Annie; Caus, Esmeralda

doi:10.1016/s0037-0738(02)00316-0

Cited by 54 publications

(51 citation statements)

References 9 publications

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“…A very comparable and wellcorrelated pattern of drowning is also known from the Vercors area (e.g., Arnaud-Vanneau et al, 1976;Arnaud et al, 1998), and from the Spanish Pyrenees (Bernaus et al, 2003). In the Monts de Vaucluse, S France, the Urgonian succession includes a rudist-bearing succession (U2 in Masse et al, 1999), which is replaced by a succession of bioclastic carbonates (U3 in Masse et al, 1999) near the limit between the weissi and deshayesi zones.…”

Section: The Disappearance Of the Urgonian Platform In The Context Ofsupporting

confidence: 61%

“…During the evolution of this platform, a phase of important platform progradation and aggradation has been recognized, which resulted in the buildup of a prominent and predominantly photozoan carbonate succession -the so-called "Urgonian" (e.g., Lienert, 1965;Arnaud-Vanneau et al, 1976;Funk et al, 1993;Michalik, 1994;Arnaud et al, 1998;Bernaus et al, 2003;Bodin et al, 2006a; submitted for publication). Coeval sediments of equivalent or at least comparable facies are also documented from the Arabian peninsula (e.g., Immenhauser et al, 2004) and from the Cupido carbonate platforms of northeastern Mexico (Bralower et al, 1999;Lehmann et al, 1999;cf.…”

Section: Introductionmentioning

confidence: 99%

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Demise of the northern Tethyan Urgonian carbonate platform and subsequent transition towards pelagic conditions: The sedimentary record of the Col de la Plaine Morte area, central Switzerland

Föllmi

Gainon

2008

Sedimentary Geology

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The sedimentary succession of the Col de la Plaine Morte area (Helvetic Alps, central Switzerland) documents the disappearance of the northern Tethyan Urgonian platform in unprecedented detail and suggests stepwise platform demise, with each drowning phase documented by erosion and phosphogenesis. The first identified drowning phase terminated Urgonian carbonate production in a predominantly photozoan mode. Using a correlation of the whole-rock δ 13 C record with the well-dated record from SE France, its age is inferred to as Middle Early Aptian (near the boundary between the weissi and deshayesi zones). A subsequent drowning phase is dated by ammonites and by a correlation of the whole-rock δ 13 C record as Late Early Aptian (late deshayesi to early furcata zone). A third drowning phase provides an ammonite-based age of Early Late Aptian (subnodosocostatum and melchioris zones) and is part of a widely recognized phase of sediment condensation and phosphogenesis, which is dated as latest Early to Middle Late Aptian (late furcata zone to near the boundary of the melchioris and nolani zones). The fourth and final drowning phase started in the latest Aptian (jacobi zone) as is also indicated by ammonite findings at the Col de la Plaine Morte. The phases of renewed platform-carbonate production intervening between the drowning phases were all in a heterozoan mode. During the ultimate drowning phase, phosphogenesis continued until the Early Middle Albian, whereas condensation processes lasted until the Middle Turonian. Coverage of the external margin of the drowned Urgonian platform by a drape of pelagic carbonates started only in the Late Turonian. During the Santonian, the external part of the drowned platform underwent normal faulting and saw the re-exposure of already lithified Urgonian carbonates at the seafloor. Based on the here-inferred ages, the first drowning phase just precedes oceanic anoxic episode 1a (OAE 1a or "selli event") in time, and the second drowning phase partly overlaps with OAE 1a. The onset of the third drowning event slightly predates two further periods of increased organic-matter accumulation in the Vocontian Basin (Noir and Fallot levels), and the onset of the fourth and final drowning phase may coincide with two further periods of increased organic-matter accumulation in the Vocontian Basin (Jacob and Kilian levels, part of OAE 1b). These correlations indicate a relationship between the so-called anoxic episodes and the stepwise demise of the Urgonian platform, even if the onset of environmental change is registered earlier on the platform than in basinal sediments.

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Section: The Disappearance Of the Urgonian Platform In The Context Ofsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Demise of the northern Tethyan Urgonian carbonate platform and subsequent transition towards pelagic conditions: The sedimentary record of the Col de la Plaine Morte area, central Switzerland

Föllmi

Gainon

2008

Sedimentary Geology

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“…Occurrences of charophyts and ostracods without the marine fauna and Xora are indicators of deposition in fresh to brackish water conditions (Flügel 2004). A similar microfacies was reported from the lacustrine environment by Bernaus et al (2003) in the Organyá Basin.…”

Section: Discussionsupporting

confidence: 87%

Facies distribution and sequence stratigraphy of the Coniacian–Santonian succession of the Bangestan Palaeo-high in the Bangestan Anticline, SW Iran

Ghabeishavi

Vaziri‐Moghaddam

Taheri

2008

Facies

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This study is focused on the sedimentary environments, facies distribution, and sequence stratigraphy of the Coniacian-Santonian sediments of the Bangestan Palaeo-high in the Bangestan Anticline (Zagros, Iran). These sediments are subdivided into nine microfacies types belonging to various sedimentary environments, ranging from continental lacustrine to very shallow and relatively deep-water (hemipelagic to pelagic) marine environments. The lower boundary of the studied sections is characterised by an unconformity. The lacustrine and very shallow marine sediments at the base of the studied sections are interpreted as a lowstand system tract. The establishment of an open shelf carbonate platform took place during the transgressive system tract. The maximum Xooding zone of the Early Santonian is an important surface because it extends from the distal to the proximal part of the depositional environment.

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“…The Urgonian-type sed i ments are a char ac ter is tic shal low-water car bon ate-plat form fa cies that ac cu mu lated along the Tethys north ern shelf gen er ally from the Barremian to the Late Albian (e.g., Michalík, 1994;Bernaus et al, 2003;Godet et al, 2010). These Urgonian-type sed i ments in the High-Tatric Unit are known as the Wysoka Turnia Lime stone For ma tion (Lefeld et al, 1985).…”

Section: Palaeoenvironmentmentioning

confidence: 99%

Stratigraphic position of alkaline volcanic rocks in the autochthonous cover of the High-Tatric Unit (Western Tatra Mts., Central Western Carpathians, Slovakia)

Madzin

Sýkora²,

Soták³

2014

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Carbonate platform sequence stratigraphy in a rapidly subsiding area: the Late Barremian–Early Aptian of the Organyà basin, Spanish Pyrenees

Cited by 54 publications

References 9 publications

Demise of the northern Tethyan Urgonian carbonate platform and subsequent transition towards pelagic conditions: The sedimentary record of the Col de la Plaine Morte area, central Switzerland

Demise of the northern Tethyan Urgonian carbonate platform and subsequent transition towards pelagic conditions: The sedimentary record of the Col de la Plaine Morte area, central Switzerland

Facies distribution and sequence stratigraphy of the Coniacian–Santonian succession of the Bangestan Palaeo-high in the Bangestan Anticline, SW Iran

Stratigraphic position of alkaline volcanic rocks in the autochthonous cover of the High-Tatric Unit (Western Tatra Mts., Central Western Carpathians, Slovakia)

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