Trans-border (east Serbia/west Bulgaria) correlation of the Jurassic sediments: Main Jurassic paleogeographic units

Tchoumatchenco, Platon; Rabrenovic, Dragoman; Radulović, Barbara V.; Radulović, Vladan J.

doi:10.2298/gabp0667013t

Cited by 11 publications

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“…However, the evidence contained in these papers has long been confined to the Bulgarian/ Serbian state border, and what is beyond the border, in northeastern Serbia, has been known mainly from the publications of Serbian geologists (e.g., Andjelković and Petković, 1975;Andjelković et al 1996;Radulović et al, 1997). During the previous decade, successful correlations between the Jurassic lithostratigraphic units in NW Bulgaria and NE Serbia were made (Tchoumatchenco et al, 2006a(Tchoumatchenco et al, , 2006b(Tchoumatchenco et al, , 2008(Tchoumatchenco et al, , 2010a(Tchoumatchenco et al, , 2010b(Tchoumatchenco et al, , 2011. A result of this is that correlations between the Bulgarian and Serbian Jurassic lithostratigraphic successions have now attained the highest levels of reliability and detail.…”

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confidence: 99%

Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic

Tchoumatchenco

2020

Geologica Balcanica

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Jurassic rocks in the Danube Region of northwestern Bulgaria and northeastern Serbia have been the subject of numerous earlier studies that have shown notable similarities between their sedimentary facies and depositional environments. In terms of regional palaeotectonic zonation, this area represents the westernmost parts of the Vidin Early–Middle Jurassic Complex Horst and the Mihaylovgrad Early–Middle Jurassic Graben in NW Bulgaria, as well as the easternmost part of the Lower Danubicum in NE Serbia, which collectively take part of the Jurassic Moesian Platform. For compiling an overall conception of the palaeoenvironments that existed during the Jurassic, nine palaeoenvironmental sketch maps, from the Aalenian to the late Tithonian, have been composed in this study, based on reinterpretation of the data borrowed from previous literature. It became evident that the Middle Jurassic sedimentary successions of the Danube Region record an evolution from an initially isolated lacustrine-palustrine depositional setting (Aalenian) to rapidly expanding shallow to moderately deeper-marine sandy-calcareous setting (late Bajocian–early Callovian). From the middle Callovian and onwards, during the Late Jurassic, the region became an area of laterally extensive pelagic and platform carbonate deposition. This interpretation is consistent with the available earlier data, but it links the facies and their respective settings from NW Bulgaria to NE Serbia, which has not been made to date and will be of benefit for future regional correlations.

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Section: Introductionmentioning

confidence: 99%

Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic

Tchoumatchenco

2020

Geologica Balcanica

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“…The boundaries of the Izdremets Basin are to the northeast with Vratza Horst, to the south-west -with Dragoman Horst and to the south-east with the Nish-Troyan flysch trough. To the west, the Izdremets Basin continued on the territory of East Serbia (Tchoumatchenco et al, 2006a, b). Tchoumatchenco (2006) included the studied succession to the Jurassic Izdremets Graben Unit.…”

Section: Introductionmentioning

confidence: 99%

Callovian to Lower Cretaceous pelagic carbonates in the West Balkan Mountains (Komshtitsa and Barlya sections): integrated biostratigraphy and microfacies

Lakova¹,

Tchoumatchenco²,

Ivanova³

et al. 2007

GeolBalc

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The Jurassic System in the West Balkan Mountains attracted the attention of the first scholars of geology and stratigraphy in Bulgaria F. Toula and V. Zlatarski more than 100 years ago. The intense field, palaeontological and stratigraphical studies of the Upper Jurassic and Lower Cretaceous pelagic carbonates in the Izdremets Syncline led to the lithostratigraphic subdivision and establishment of all stages from the Callovian to the Hauterivian as a relust of publications of I. Sapunov, I. Nachev, T. Nikolon and G. Mandov in the 60s and 70s of the last century. An integrated micropalaeontological zonation of the Tithonian, Berriasian and Valanginian was elaborated by I. Lakova, K. Stoykova and D. Ivanova. Recently, P. Tchoumatchenco divided the sections at Komshtitsa and Barlya into second- and third-order sequences. The subject of this paper is a synthesis of the existing stratigraphic knowledge of the Callovian to Valanginian pelagic carbonate succession at the sections of Komshtitsa and Barlya in the West Balkan tectonic unit, as well as a correlation with new micropalaeontological and microfacial results. A zonation on calcareous dinocysts for the Upper Jurassic is here presented and correlated to the ammonite zones in the Yavorets, Gintsi and Glozhene Formations. The used biostratigraphical criteria of determination of the stage boundaries (Callovian to Valanginian) are discussed. Six successive microfacies are determined and described: filamentous, Globuligerina-radiolarian, Saccocoma, Globochaete, calpionellid and spicule.

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“…The terms "Štramberk Limestone" and "Štramberk-type limestones" have been widely used in the area of the former Austro-Hungarian Empire for the field description of shallow-water limestones of assumed Late Jurassic age, usually occurring within flysch deposits of the Outer Carpathians. Upper Jurassic-lowermost Cretaceous shallow-water limestones in Romania (commonly forming mountains or ridges, e.g., Pleş et al, 2013Pleş et al, , 2016, in Bulgaria and Serbia (Tchoumatchenco et al, 2006), and Ukraine (Krajewski and Schlagintweit, 2018), and in Turkey (Masse et al, 2015) sometimes are referred to as the Štramberk-type limestones as well. In the Austrian-German literature similar limestones in the Alps are known as the Plassen Limestone (e.g., Steiger and Wurm, 1980;Schlagintweit et al, 2005).…”

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A lost carbonate platform deciphered from clasts embedded in flysch: Štramberk-type limestones, Polish Outer Carpathians

Hoffmann¹,

Kołodziej²,

Kowal-Kasprzyk³

2021

ASGP

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Limestones designated the Štramberk-type are the most common carbonate exotic clasts (exotics) embedded in the uppermost Jurassic-Miocene flysch deposits of the Polish Outer Carpathians. About 80% of stratigraphically determinable carbonate exotics from the Silesian, Sub-Silesian and Skole units (nappes) are of Tithonian (mostly)-Berriasian (sporadically Valanginian) age. A study of these exotics revealed eight main facies types: coral-microbial boundstones (FT 1), microencruster-microbial-cement boundstones (FT 2), microbial and microbial-sponge boundstones (FT 3), detrital limestones (FT 4), foraminiferal-algal limestones (FT 5), peloidalbioclastic limestones (FT 6), ooid grainstones (FT 7), and mudstones-wackestones with calpionellids (FT 8). Štramberk-type limestones in Poland and the better known Štramberk Limestone in the Czech Republic are remnants of lost carbonate platforms, collectively designated the Štramberk Carbonate Platform. Narrow platforms were developed on intra-basinal, structural highs (some of them are generalized as the Silesian Ridge), with their morphology determined by Late Jurassic synsedimentary tectonics. An attempt was made to reconstruct the facies distribution on the Tithonian-earliest Cretaceous carbonate platform. In the inner platform, coral-microbial patch-reefs (FT 1) grew, while the upper slope of the platform was the depositional setting for the microencruster-microbial-cement boundstones (FT 2). Microbial and microbial-sponge boundstones (FT 3), analogous to the Oxfordian-Kimmeridgian boundstones of the northern Tethyan shelf (also present among exotics), were developed in a deeper setting. In the inner, open part of the platform, foraminiferal-algal limestones (FT 5) and peloidal-bioclastic limestones (FT 6) were deposited. Poorly sorted, detrital limestones (FT 4), including clastsupported breccias, were formed mainly in a peri-reefal environment and on the margin of the platform, in a high-energy setting. Ooid grainstones (FT 7), rarely represented in the exotics, were formed on the platform margin. Mudstones-wackestones with calpionellids (FT 8) were deposited in a deeper part of the platform slope and/or in a basinal setting. In tectonic grabens, between ridges with attached carbonate platforms, sedimentation of the pelagic (analogous to FT 8) and allodapic ("pre-flysch") Cieszyn Limestone Formation took place. The most common facies are FT 4 and FT 1. Sedimentation on the Štramberk Carbonate Platform terminated in the earliest Cretaceous, when the platform was destroyed and drowned. It is recorded in a few exotics as thin, neptunian dykes (and large dykes in the Štramberk Limestone), filled with dark, deep-water limestones. Reefal facies of the Štramberk Carbonate Platform share similarities in several respects (e.g., the presence of the microencrustermicrobial-cement boundstones) with reefs of other intra-Tethyan carbonate platforms, but clearly differ from palaeogeographically close reefs and coral-bearing facies of the epicontinental Tethyan shelf (e.g., coeval lim...

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Trans-border (east Serbia/west Bulgaria) correlation of the Jurassic sediments: Main Jurassic paleogeographic units

Cited by 11 publications

References 0 publications

Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic

Palaeoenvironments of northwestern Bulgaria and northeastern Serbia during the Jurassic

Callovian to Lower Cretaceous pelagic carbonates in the West Balkan Mountains (Komshtitsa and Barlya sections): integrated biostratigraphy and microfacies

A lost carbonate platform deciphered from clasts embedded in flysch: Štramberk-type limestones, Polish Outer Carpathians

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