Stratigraphic and geochemical study of the organic-rich black shales in the Tarcău Nappe of the Moldavidian Domain (Carpathian Chain, Romania)

Belayouni, Habib; Staso, Angelida Di; Guerrera, Francesco; Martı́n-Martı́n, Manuél; Miclăuș, Crina; Serrano, Francisco; Tramontana, Mario

doi:10.1007/s00531-007-0226-7

Cited by 18 publications

(19 citation statements)

References 34 publications

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“…Guerrera et al, 2014;Guerrera & Martín-Martín, 2014a) and otherchains (e.g. Belayouni et al, 2009Belayouni et al, , 2006Belayouni, Guerrera, Martín-Martín, & Serrano, 2013). The logic was to make comparison between the External Betic sector and other external domains of the northern Africa (Rif and Tunisian Tell) and Apennine Chain in order to highlight common regional tectonic events for a better comprehension of the Miocene evolution of the central-western Mediterranean region.…”

Section: Introductionmentioning

confidence: 99%

Miocene tectono-sedimentary evolution of the eastern external Betic Cordillera (Spain)

et al. 2018

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An interdisciplinary study of Miocene successions in the eastern External Betic Zone (South Iberian Margin) was carried out. Evidences of syn-sedimentary tectonic activity were recognized. The results enabled a better reconstruction of the stratigraphic architecture (with an improved chronostratigraphic resolution) in the framework of the Miocene foredeep evolution of the eastern EBZ. Two main depositional sequences were dated as uppermost Burdigalian-upper Serravallian p.p. and middle-upper Tortonian. p.p., respectively. The vertical and lateral diversification of lithofacies associations and thicknesses resulted from the syndepositional tectonic complexity of the area. A great variety of sedimentary depositional realms is due to different subsidence rates, and the growing of anticlines and synclines during the Langhian p.p.-Serravallian. After a regression with an early Tortonian erosional gap, platform to hemipelagic realms developed during the middle Tortonian. The end of the sedimentation coincided with the emplacement of an important olisthostrome-like mass consisting of Triassic material related to either the development of thrust systems or diapirs emerged in the middle-late Tortonian, during the nappe emplacement. Correlations with other external sectors of the Betic Chain, and the external domains of the Rif, Tell, and northern Apennine Chains highlighted a similar Miocene foredeep evolution during the building of these orogens. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Miocene tectono-sedimentary evolution of the eastern external Betic Cordillera (Spain)

et al. 2018

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“…It is important to mention that, in this area, only the internal "lithofacies" of the Tarcău Nappe is preserved, the mixed and external ones have been eroded. The mixed and external "lithofacies" were studied in the Gura Humorului area situated toward the north (Belayouni et al 2007). The terminology for stratigraphic units, main lithofacies, thickness, samples, and stratigraphic sections of the Vrancea and Tarcău Nappes are summarized in Tables 1 and 2, respectively, while detailed lithostratigraphy is reported in Figure 2.…”

Section: Lithostratigraphymentioning

confidence: 99%

“…2 and 3) with rank of formation, consequently being considered members and not formations as they were previously (Grasu et al 1988). Since this unit can be correlated with an analogous one defined by Belayouni et al (2007) in the Tarcău Nappe, we will use the same informal name, Unit B. This unit (200-400 m thick from Fig.…”

Section: Lithostratigraphymentioning

confidence: 99%

“…The "upper dysodilic shales mb" (stratigraphic sections 1, 2) consists of laminated black shale, quartzarenites, sub-arkoses and thin (1-2 cm thick) bentonitic beds. In the Tarcău Nappe, the equivalent succession (log 6) is made up of Unit B, consisting of "lower menilites", "bituminous marls", and "lower dysodilic shales mbs", as reported in Belayouni et al (2007).…”

Section: Lithostratigraphymentioning

confidence: 99%

“…In the same area the latter crops out in tectonic half-window named Bistri a (Băncilă 1958), the second one of the four half-windows -Putna, Bistri a, Oituz, and Vrancea, from the north to the south -where the Vrancea Nappe is exposed along the Eastern Carpathian front (Ma enco & Bertotti 2000;Belayouni et al 2007, among others). Our study of Vrancea Nappe was conducted in the Bistri a half-window, in the Piatra Neam -Bacău area, while the study of Tarcău Nappe both in the Piatra Neam area and in the Gura Humorului area in the northern part of Eastern Carpathians (Belayouni et al 2007). According to previous literature (Dumitrescu 1952;Băncilă 1958;Ionesi 1971;Săndulescu 1984Săndulescu , 1988Grasu et al 1988, among others) the Tarcău and Vrancea Nappe's successions range from the Early Cretaceous to the Early Miocene, the deposits showing a marked vertical and lateral lithofacies variability.…”

Section: Introductionmentioning

confidence: 99%

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Tectonic control on the sedimentary record of the central Moldavidian Basin (Eastern Carpathians, Romania)

Guerrera¹,

Martín²,

A.³

et al. 2012

Geologica Carpathica

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Abstract:The sedimentary record of the Tarcău and Vrancea Nappes, belonging to the flysch accretionary zone of the Eastern Carpathians (Eastern Carpathian Outer Flysch), registered Cretaceous-Miocene events during the evolution of the Moldavidian Basin. Our biostratigraphic data indicate that the deposits studied are younger than previously reported. The comparison of sedimentary record studied with the Late Cretaceous-Early Miocene global eustatic curve indicates that eustatic factor played a secondary role, after the tectonic one. Four main stages of different processes influenced by tectonics are recognized in the sedimentary record: (1) Campanian-Maastrichtian-earliest Paleocene; (2) latest Ypresian-Lutetian; (3) late Chattian-earliest Aquitanian, and (4) late Aquitanian-early Burdigalian. The late Chattianearliest Aquitanian and late Aquitanian-early Burdigalian records indicate a high tectonic influence. The first event was related to the foredeep stage of the sedimentary domain studied, and the second one to the deformation stage of the same domain. The sedimentary records of tectonic influence recognized during these stages are useful tools for geodynamic reconstructions. The stratigraphic correlation of Tarcău and Vrancea sedimentary records are used to propose some constraints in the timing of the deformation for the central Moldavidian Basin and close domains.

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New data on the Vrancea Nappe (Moldavidian Basin, Outer Carpathian Domain, Romania): paleogeographic and geodynamic reconstructions

Amadori

Belayouni

Guerrera

et al. 2012

Int J Earth Sci (Geol Rundsch)

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A study has been performed on the Cretaceous to Early Miocene succession of the Vrancea Nappe (Outer Carpathians, Romania), based on field reconstruction of the stratigraphic record, mineralogical-petrographic and geochemical analyses. Extra-basinal clastic supply and intrabasinal autochthonous deposits have been differentiated, appearing laterally inter-fingered and/or interbedded. The main clastic petrofacies consist of calcarenites, sub-litharenites, quartzarenites, sub-arkoses, and polygenic conglomerates\ud derived from extra-basinal margins. An alternate internal and external provenance of the different supplies is the result of the paleogeographic re-organization of the basin/margins system due to tectonic activation and exhumation of rising areas. The intra-basinal deposits consist of black shales and siliceous sediments (silexites and cherty beds), evidencing major environmental changes in the Moldavidian Basin. Organic-matter-rich black shales were deposited during anoxic episodes related to sediment starvation and high nutrient influx due to paleogeographic isolation of the basin caused by plate drifting. The black shales display relatively high contents in sub-mature to mature, Type II lipidic organic matter (good oil and gas-prone source rocks) constituting a potentially active petroleum system.\ud The intra-basinal siliceous sediments are related to oxic pelagic or hemipelagic environments under tectonic quiescence conditions although its increase in the Oligocene part of the succession can be correlated with volcanic supplies.\ud The integration of all the data in the ‘‘progressive reorientation of convergence direction’’ Carpathian model, and their consideration in the framework of a foreland basin, led to propose some constrains on the paleogeographic-geodynamic evolutionary model of the Moldavidian Basin from the Late Cretaceous to the Burdigalian

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Stratigraphic and geochemical study of the organic-rich black shales in the Tarcău Nappe of the Moldavidian Domain (Carpathian Chain, Romania)

Cited by 18 publications

References 34 publications

Miocene tectono-sedimentary evolution of the eastern external Betic Cordillera (Spain)

Miocene tectono-sedimentary evolution of the eastern external Betic Cordillera (Spain)

Tectonic control on the sedimentary record of the central Moldavidian Basin (Eastern Carpathians, Romania)

New data on the Vrancea Nappe (Moldavidian Basin, Outer Carpathian Domain, Romania): paleogeographic and geodynamic reconstructions

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