A Dominant Tectonic Signal in High-Frequency, Peritidal Carbonate Cycles? A Regional Analysis of Liassic Platforms from Western Tethys

Bosence, Dan; Procter, Emily; Aurell, Marc; Kahla, A. Bel; BouDagher‐Fadel, Marcelle K.; Casaglia, Francesca; Cirilli, Simonetta; Mehdie, Mohammed; Nieto, Luís M.; Rey, J.; Scherreiks, Rudolph; Soussi, Mohamed; Waltham, David

doi:10.2110/jsr.2009.038

Cited by 110 publications

(104 citation statements)

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“…The recorded succession of faunas parallels the studies of benthic foraminifera elsewhere in the present peri-Mediterranean area (cHioccHini et al, 1994;zamBetaKis-leKKas et al, 1996;BoudaGHer-Fadel et al, 2001;eren et al, 2002;KaBal & tasli, 2003;Barattolo & romano, 2005;mancinelli et al, 2005;Pomoni-PaPaioannou & KostoPoulou, 2008;Bosence et al, 2009;tunaBoylu et al, 2014). The contrasting Hettangian -Early Sinemurian and Late Sinemurian -Pliensbachian communities are mostly interpreted as survival and recovery communities of the post-extinction period (Barattolo & romano, 2005;mancinelli et al, 2005;BoudaGHer-Fadel & Bosence, 2007;BoudaGHer-Fadel, 2008;tunaBoylu et al, 2014), and could be interpreted as part of the global community maturation process (Hottinger, 1996(Hottinger, , 2014.…”

Section: Diversification In Foraminiferasupporting

confidence: 79%

“…1; Placer, 1999Placer, , 2008. The Lower Jurassic succession consists of shallow-marine carbonates deposited on the Adriatic Carbonate Platform (AdCP; Vlahović et al, 2002Vlahović et al, , 2005, locally also known as the Dinaric Carbonate Platform (Buser, 1989;oGorelec & rotHe, 1993), which was during the Early Jurassic situated at a paleolatitude of approximately 25°N (stamPFli & mosar, 1999;stamPFli & Kozur, 2006;Bosence et al, 2009;Berra & anGiolini, 2014). The thick sequence of carbonates, which continued to be deposited up until the uppermost Cretaceous (Buser, 1989), was later tilted and broken into several tectonic blocks, and separated by faults that in the studied area run in approximately N-S and WNW-ESE to NW-SE directions, separating tectonic blocks comprising Upper Triassic to Middle Jurassic carbonates ( Fig.…”

Section: Geological Setting and General Stratigraphymentioning

confidence: 99%

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Early Jurassic foraminiferal assemblages in platform carbonates of Mt. Krim, central Slovenia

Gale¹,

Kelemen²

2017

Geologija

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During the Early Jurassic, the subtropical carbonate platforms of the peri-Tethys Ocean experienced significant changes in their architectures, as well as in their biota compositions. Shallow-water carbonates from the northern part of the ancient Adriatic Carbonate Platform (External Dinarides) were investigated in six sections, which taken together cover the development of the platform from deposition of the uppermost Triassic Main Dolomite to the middle Lower Jurassic, lithiotid limestone. Our aim was to establish a detailed foraminiferal biostratigraphy and to observe the changes in size, abundance and diversity of foraminifera in different types of facies. As a result, the succession was successfully divided into stage or substage levels. Foraminiferal assemblages were shown to experience a gradual change in taxonomic composition (including an increase in the proportion of complex agglutinated forms), a general increase in abundance of specimens, and greater diversity in each facies type, except in bindstone and mudstone. Notable is the difference between Hettangian assemblages, which display fairly uniform compositions in all facies types and the predominance of opportunists, and the post-Hettangian assemblages, which become progressively more species-rich and where the differences in facies are perhaps more pronounced. Changes in the size of the species Meandrovoluta asiagoensis Fugagnoli & Rettori, and of the largest specimen in the assemblages, however, are less clear, but are arguably present. Faunal changes roughly correspond to the gradual change from the flat-top platform of the upper Triassic -Hettangian, where biota would be repeatedly subjected to stressed peritidal conditions, to a platform differentiated into lagoon, sand bars and ephemeral emergent areas, offering numerous habitats and perhaps more stable living conditions for organisms. IzvlečekKarbonatne platforme območja Tetide so v času starejše jure doživljale znatne spremembe v morfologiji in sestavi biote. Plitvomorske karbonate Jadranske karbonatne platforme (Zunanji Dinaridi) smo raziskali v šestih profilih na širšem območju Krima. Profili skupaj zajemajo interval od vrhnjega dela, glavnega dolomita do litiotidnega apnenca. Naš cilj je bil identifikacija foraminifernih biocon. Poleg same taksonomske sestave smo beležili še raznolikost foraminifernih združb, pogostnost (ali gostoto) foraminifer ter spremembo v velikosti vrste Meandrovoluta asiagoensis Fugagnoli & Rettori ter v velikosti največjih primerkov v združbah. Po pričakovanjih rezultati kažejo postopne spremembe v taksonomski sestavi foraminifernih združb, vključno z naraščanjem deleža kompleksnih aglutiniranih vrst ter splošen porast gostote primerkov in raznolikosti v vseh faciesih razen v bindstone in mudstone faciesih. Zanimivo je, da hettangijske združbe izkazujejo precejšnjo podobnost v sestavi in prevlado oportunističnih vrst, medtem ko so razlike med združbami glede na facies v mlajših plasteh bolj izrazite. Sprememba v velikosti vrste M. asiagoensis je znotraj p...

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Section: Diversification In Foraminiferasupporting

confidence: 79%

Section: Geological Setting and General Stratigraphymentioning

confidence: 99%

Early Jurassic foraminiferal assemblages in platform carbonates of Mt. Krim, central Slovenia

Gale¹,

Kelemen²

2017

Geologija

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“…Gyroporella, Palaeodasycladus mediterraneus) and megalodontid bivalves. Thick successions composed of meter-scale, mostly shallowing-upward peritidal cycles occur in northern Attica (Barattolo and Romano 2005;Romano et al 2008;Bosence et al 2009). …”

Section: Comparison Of the Late Triassic Carbonate Platform Evolutionmentioning

confidence: 99%

“…The karstic and early meteoric diagenetic features, which often overprint the top of the supratidal and/or subtidal deposits, imply sea-level fluctuations and repeated, relatively longlasting exposure events (Haas et al 2007;. Consequently, these cycles probably record high-frequency eustatic sea-level oscillations, although the contribution of autocyclic mechanisms cannot be ruled out (Haas 1991;1994;Haas et al 2007;Romano et al 2008;Bosence et al 2009). …”

Section: Comparison Of the Areas Studiedmentioning

confidence: 99%

Comparison of the Late Triassic carbonate platform evolution and Lofer cyclicity in the Transdanubian Range, Hungary and Pelagonian Zone, Greece

Haas¹,

Pomoni-Papaioannou²,

Kostopoulou³

2009

Central European Geology

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For comparative studies of Upper Triassic cyclic platform carbonates, the Transdanubian Range (Hungary) and the Pelagonian Zone (Greece) were chosen. Paleogeographically they represent two distant segments of the passive margin of the Neotethys Ocean. During the Late Triassic, on this wide margin a very extensive tropical carbonate platform domain was developed, referred to as the Dachstein-type carbonate platform system. The Transdanubian Range (TR) represents a segment of a continent-encroaching platform system, whereas the Pelagonian-Subpelagonian Zone (PG) may have been a large isolated platform, surrounded by deep-water basins. The discussed Upper Triassic thick platform carbonates (Fõdolomit/Hauptdolomit Formation and Dachstein Limestone in the TR, and Pantokrator Formation in the PG) are made up of cyclically arranged facies deposited under similar environmental conditions in the interior zones of carbonate platforms. Three characteristic major facies types can be distinguished: shallow subtidal-lagoonal, intertidal and supratidal-pedogenic, which correspond to the three typical lithofacies (members C, B and A) of Fischer's (1964) Lofer-cycle. The cycles are usually bounded by discontinuity surfaces related to subaerial exposure and pedogenic alteration. The meter-scale (Lofer) cyclicity is predominant throughout the successions. However, various stacking patterns including symmetric complete, truncated, incomplete, and condensed cycles or even alternating peritidal and subtidal facies without any disconformity are recognized in both areas studied. Pervasive or partial early diagenetic dolomitization affected some parts of the cyclic successions in both areas. However, age-dependence of the early dolomitization was clearly demonstrated only in the TR, where the older part of the platform carbonate succession was subject to pervasive dolomitization, whereas the younger part is non-dolomitized and there is a transitional unit between them. This trend is attributed to the climate changing from semiarid to more humid. The Upper Triassic platform carbonates of the TR and PG show strikingly similar features concerning the litho-and biofacies, the stacking pattern and the thickness of the elementary cycles, despite their distant and different paleogeographic setting within the western Neotethys realm. This suggests a Central European Geology, Vol. 52/2, pp. 153-184 (2009) DOI: 10.1556/CEuGeol.52.2009 Comparison of the Late Triassic carbonate platform evolution and Lofer cyclicity in the Transdanubian Range, Hungary and Pelagonian Zone, GreeceJános Haas Fotini Pomoni-Papaioannou, Geological Research Group Vassiliki Kostopoulou of the Hungarian Academy of Sciences Department of Geology and Geoenvironment, Eötvös Loránd University, BudapestUniversity of Athens, Athens eustatic signal, i.e. the cyclic deposition was essentially controlled by orbitally-forced eustatic sea-level changes, although the contribution of autocyclic mechanisms cannot be excluded either. Definite signatures of subaerial exposure (karstic fe...

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“…The Late Triassic-Early Jurassic, peritidal carbonate-platform and the coeval oceanic realm prior to plate convergence A peritidal carbonate platform evolved between the Late Triassic and the Sinemurian (Fig.2). The typical cyclical peritidal facies (Bosence et al, 2009) are characterised by pervasively dolomitized microbial mats (stromatolites), pisolite rudstone with meniscus cements, intraclast floatstone, and intertidal mudstones. The bio-stratigraphy verifies Late Triassic through Sinemurian age of the peritidal platform (Table 1), which evolved concurrently with an oceanic realm, characterised by (MORB) pillow basalt and (below CCD) radiolarites of Late Triassic age (Table 2a).…”

Section: Introductionmentioning

confidence: 99%

The Callovian Unconformity and the Ophiolite Obduction Onto the Pelagonian Carbonate Platform of the Internal Hellenides

et al. 2017

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A Dominant Tectonic Signal in High-Frequency, Peritidal Carbonate Cycles? A Regional Analysis of Liassic Platforms from Western Tethys

Cited by 110 publications

References 64 publications

Early Jurassic foraminiferal assemblages in platform carbonates of Mt. Krim, central Slovenia

Early Jurassic foraminiferal assemblages in platform carbonates of Mt. Krim, central Slovenia

Comparison of the Late Triassic carbonate platform evolution and Lofer cyclicity in the Transdanubian Range, Hungary and Pelagonian Zone, Greece

The Callovian Unconformity and the Ophiolite Obduction Onto the Pelagonian Carbonate Platform of the Internal Hellenides

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