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Journal articles on the topic 'Jurassic (Toarcian-Kimmeridgian)'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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1

Riding, James B., and Richard N. L. B. Hubbard. "Jurassic (Toarcian to Kimmeridgian) dinoflagellate cysts and paleoclimates." Palynology 23, no. 1 (1999): 15–30. http://dx.doi.org/10.1080/01916122.1999.9989516.

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2

Tchoumatchenco, Platon, та Khrischo Khrischev. "Le Jurassique dans les Monts de Tiaret et de lʼOuarsenis occidental (Algérie). I. Stratigraphie". Geologica Balcanica 22, № 5 (1992): 29–59. http://dx.doi.org/10.52321/geolbalc.22.5.29.

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The Jurassic sediments in the Monts de Tiarct of the Oranian High Plains (Tlemcenian Palaeogeographic Domain) and of the Western Ouarsenis (Tellian Palaeogeographic Domain) are divided in lithostratigraphic units. The following Formations in the Lower and Middle Jurass ic rocks are distinguished: Oued Bou Loual Dolomitic Formation (Hettangian - Sinemurian); Kef Sidi Amar Limestone Formation (new unit of a Dome rian - Toarcian Age); Roubia Format ion of grey-dare l imestones with crinoids of type "Grestener Schichteu" or type "celto-swab" (new unit of a Toarcian-Aalenian Age); Senan Formation o
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3

Gradstein, Felix, Anna Waskowska, and Larisa Glinskikh. "The First 40 Million Years of Planktonic Foraminifera." Geosciences 11, no. 2 (2021): 85. http://dx.doi.org/10.3390/geosciences11020085.

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We provide a biochronology of Jurassic planktonic foramininfera, using first order linkage to ammonite and nannofossil stratigraphy and geochronology. This enigmatic and understudied group of microfossils occurred from middle Toarcian through Tithonian time, from ~180 to ~143 Ma; its origin is unknown. There are three genera: Globuligerina, Conoglobigerina and Petaloglobigerina. The genus Globuligerina, with a smooth to pustulose test surface texture appeared in Toarcian (late Early Jurassic) and Conoglobigerina, with a rough reticulate test surface texture in Oxfordian (early Late Jurassic) t
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4

Rogov, M. A., N. G. Zverkov, V. A. Zakharov, and M. S. Arkhangelsky. "Marine reptiles and climates of the Jurassic and Cretaceous of Siberia." Стратиграфия 27, no. 4 (2019): 13–39. http://dx.doi.org/10.31857/s0869-592x27413-39.

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All available data on the Jurassic and Cretaceous climates of Siberia, based on isotope, palaeontological and lithological markers are summarized. Late Pliensbachian cooling, early Toarcian warming, followed by late Toarcian to Middle Jurassic cooling and long-term Late Jurassic warming are well-recognized. Gradual cooling started since the late Ryazanian and continued during the whole Early Cretaceous except the short early Aptian warming event. At the beginning of the Late Cretaceous climate became warmer with warming peak at the Cenomanian–Turonian transition. During the middle and late Tur
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5

Al-Husseini, Moujahed I. "Jurassic Sequence Stratigraphy of the Western and Southern Arabian Gulf." GeoArabia 2, no. 4 (1997): 361–82. http://dx.doi.org/10.2113/geoarabia0204361.

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ABSTRACT The Jurassic sequence stratigraphic scheme for Central Saudi Arabia is extrapolated to the formations of the western and southern Arabian Gulf region resulting in a tentative chronostratigraphic framework. The framework is tentaively constrained as follows: (1) Upper Triassic-?Lower Jurassic continental clastics (Minjur and equivalents) and the subsequent pre-Toarcian unconformity indicate regional erosion and non-deposition over the Arabian platform. (2) A Toarcian sequence (Marrat and equivalents) provides a basal Jurassic regional datum, except in Oman. (3) The late Toarcian and Aa
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6

Gaković, Miodrag, and Platon Tchoumatchenco. "Jurassic brachiopods from the Dinarides (NE Herzegovina)." Geologica Balcanica 24, no. 3 (1994): 13–29. http://dx.doi.org/10.52321/geolbalc.24.3.13.

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Brachiopods from the Dinarides of the NE Herzegovina are described for the first time in the present paper. The following species have been recorded: Nucleata ex gr. aspasia (Meneghini), Lobothyris punctata (J. Sowerby) – from the Pliensbachian micritic limestones; Pseudogibbrirhynchia moorei (Davidson), P. jurensis (Quenstedt), Stolmorhynchia bouchardi (Quenstedt), Cuersithyris provincialis (Deslongchamps) – from the Lower Toarcian rocks; Somalirhynchia velezensis sp. n. – from the Upper Oxfordian-Lower Kimmeridgian peri-reefal limestones. The Lower Jurassic species are being more often descr
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7

Andsbjerg, Jan, and Karen Dybkjær. "Sequence stratigraphy of the Jurassic of the Danish Central Graben." Geological Survey of Denmark and Greenland (GEUS) Bulletin 1 (October 28, 2003): 265–300. http://dx.doi.org/10.34194/geusb.v1.4675.

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A sequence stratigraphic framework is established for the Jurassic of the Danish Central Graben based primarily on petrophysical log data, core sedimentology and biostratigraphic data from about 50 wells. Regional seismic lines are used to assist in the correlation of some wells and in the construction of isochore maps. In the Lower Jurassic (Hettangian–Pliensbachian) succession, five sequences have been identified. The Middle Jurassic is subdivided into four sequences that together span the uppermost Aalenian/lowermost Bajocian to the Callovian. In the Upper Jurassic, better well coverage per
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8

Embry, A. F. "Transgressive–regressive (T–R) sequence analysis of the Jurassic succession of the Sverdrup Basin, Canadian Arctic Archipelago." Canadian Journal of Earth Sciences 30, no. 2 (1993): 301–20. http://dx.doi.org/10.1139/e93-024.

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Transgressive–regressive (T–R) sequence analysis has been applied to the Jurassic succession of the Sverdrup Basin with sequence boundaries drawn at subaerial unconformities or the correlative transgressive surfaces. A hierarchal system of sequence order that reflects the different nature of the boundaries has been formulated on the basis of boundary characteristics. Second- through fifth-order sequences have been recognized in the Jurassic succession, which itself is part of a first-order sequence of mid-Permian – Early Cretaceous age.The Jurassic strata occur within four second-order sequenc
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9

Pálfy, J., P. L. Smith, and J. K. Mortensen. "A U-Pb and 40Ar/39Ar time scale for the Jurassic." Canadian Journal of Earth Sciences 37, no. 6 (2000): 923–44. http://dx.doi.org/10.1139/e00-002.

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Published time scales provide discrepant age estimates for Jurassic stage boundaries and carry large uncertainties. The U-Pb or 40Ar/39Ar dating of volcaniclastic rocks with precisely known stratigraphic age is the preferred method to improve the calibration. A radiometric age database consisting of fifty U-Pb and 40Ar/39Ar ages was compiled to construct a revised Jurassic time scale. Accepted ages have a precision of ±5 Ma (2σ) or better and are confined to no more than two adjacent stages. The majority of these calibration points result from integrated bio- and geochronologic dating in the w
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10

Al-Husseini, Moujahed. "Update to Late Triassic – Jurassic stratigraphy of Saudi Arabia for the Middle East Geologic Time Scale." GeoArabia 14, no. 2 (2009): 145–86. http://dx.doi.org/10.2113/geoarabia1402145.

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ABSTRACT This Note presents a formal update to the Middle East Geologic Time Scale 2008 (ME GTS) for the Late Triassic and Jurassic rock units of Saudi Arabia. It reviews their lithostratigraphic nomenclature, ranks and stage assignments, and proposes names for third-order chrono-sequences as compiled and/or interpreted from the published literature. The review starts with the Late Triassic (Late Norian – Rhaetian) Minjur Sandstone of the Buraydah Group, with the Triassic – Jurassic (TrJ) boundary positioned at its top. The Minjur Sandstone consists of two units, here ranked as members, which
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11

Kadar, Adi P., Thomas De Keyser, Nilotpaul Neog, and Khalaf A. Karam. "Calcareous nannofossil zonation and sequence stratigraphy of the Jurassic System, onshore Kuwait." GeoArabia 20, no. 4 (2015): 125–80. http://dx.doi.org/10.2113/geoarabia2004125.

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ABSTRACT This paper presents the calcareous nannofossil zonation of the Middle and Upper Jurassic of onshore Kuwait and formalizes current stratigraphic nomenclature. It also interprets the positions of the Jurassic Arabian Plate maximum flooding surfaces (MFS J10 to J110 of Sharland et al., 2001) and sequence boundaries in Kuwait, and correlates them to those in central Saudi Arabia outcrops. This study integrates data from about 400 core samples from 11 wells representing a nearly complete Middle to Upper Jurassic stratigraphic succession. Forty-two nannofossil species were identified using
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12

Hughes, Geraint Wyn. "A new thin-section based micropaleontological biozonation for the Saudi Arabian Jurassic carbonates." Micropaleontology 64, no. 6 (2018): 331–64. http://dx.doi.org/10.47894/mpal.64.6.02.

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Micropaleontological biozonation of the Jurassic of the Middle East is poorly developed and shown to have limited regional applicability. This difficulty is based on the inability to apply global schemes based on open marine forms, such as planktonic foraminifera and calpionellids, to the extensive and relatively shallow, often hypersaline carbonate platforms that persisted throughout much of the Jurassic. Intrashelf basins with restricted open marine access further inhibited the use of standard global tropical planktonic biozonations. The Arabian Platform was a shallow marine, predominantly c
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13

Sha, Jingeng, Paul L. Smith, and Franz T. Fürsich. "Jurassic Ostreoida (Bivalvia) from China (Tanggula Mountains, Qinghai-Xizang Plateau) and their Paleobiogeographic context." Journal of Paleontology 76, no. 3 (2002): 431–46. http://dx.doi.org/10.1017/s002233600003729x.

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The Bathonian-Oxfordian ostreid fauna from the main ridge of the Tanggula Mountains of the Qinghai-Xizang Plateau, China, consists of six taxa: Actinostreon gregareum (J. Sowerby, 1815), Actinostreon sp. A, Liostrea birmanica Reed, 1936, Gryphaea (Bilobissa) bilobata (J. de C. Sowerby, 1835), Nanogyra nana (J. Sowerby, 1822) and Eligmus rollandi Douvillé 1907. Liostrea birmanica is only known from the eastern Tethys and south Xizang area, Eligmus rollandi is limited to the Tethys, G. (B.) bilobata occurs in northwest Europe and the northern Tethys, whereas A. gregareum and possibly N. nana hav
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14

Jeans, C. V. "Clay mineralogy of the Jurassic strata of the British Isles." Clay Minerals 41, no. 1 (2006): 187–307. http://dx.doi.org/10.1180/0009855064110198.

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AbstractThe nature and origin of the clay mineralogy of the Jurassic strata of the British Isles are described and discussed within their lithological and biostratigraphical framework using published and unpublished sources as well as 1800 new clay mineral analyses. Regional clay mineral variation is described systematically for the following formations or groups:England and Wales(i)Hettangian-Toarcian strata (Lias Group): Redcar Mudstone Fm.; Staithes Sandstone Fm.; Cleveland Ironstone Fm.; Whitby Mudstone Fm.; Scunthorpe Mudstone Fm.; Blue Lias Fm.; Charmouth Mudstone Fm.; Marlstone Rock Fm.
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15

Wendt, Jobst. "A unique fossil record from neptunian sills: the world’s most extreme example of stratigraphic condensation (Jurassic, western Sicily)." Acta Geologica Polonica 67, no. 2 (2017): 163–200. http://dx.doi.org/10.1515/agp-2017-0015.

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AbstractNeptunian sills at Rocca Busambra, a fragment of the Trapanese/Saccense Domain in western Sicily, host the most abundant ammonite and gastropod fauna which has ever been recorded from the Jurassic of the western Tethys. The fauna is dominated by parautochthonous organisms which were swept into the sills by gentle transport. Ammonites are characterized by perfect preservation and small size, a feature which is due to the predominance of microconchs but also of stunting. The most complete sill is 0.7 m thick and could be separated into 17 levels which range in age from the early Toarcian
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16

Enay, Raymond, and Charles Mangold. "Jurassic ammonites from Central Saudi Arabia (Jebel Tuwaiq and adjacent areas)." Revue de Paléobiologie 40, no. 1 (2021): 1–198. https://doi.org/10.5281/zenodo.5008788.

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The mapping of Phanerozoic rocks at 1:250000 scale by the Saudi Arabian Deputy Ministry for Mineral Resources and the French Bureau de Recherches Géologiques et Minières, since 1980, covered most of the Jurassic outcrops in central Saudi Arabia. Stratigraphic, sedimentological and palaeogeographic studies provided a precise framework for the ammonite faunas which are the main purpose of the present monograph. These faunas have already been applied by the authors to build a biochronological scale specific to the Arabian province correlated with that of Western Europe, very differe
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17

Rožič, Boštjan. "Perbla and Tolmin formations: revised Toarcian to Tithonian stratigraphy of the Tolmin Basin (NW Slovenia) and regional correlations." Bulletin de la Société Géologique de France 180, no. 5 (2009): 411–30. http://dx.doi.org/10.2113/gssgfbull.180.5.411.

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Abstract The succession of the Tolmin Basin forms the foothills of the Julian Alps in northwestern Slovenia. In the Jurassic, it was part of the southern Tethyan passive continental margin. The basin was located between the Dinaric Carbonate Platform in the south and the Julian High in the north. Six sections were studied that encompass the stratigraphic interval from the Toarcian to the lower Tithonian. The basinal background deposits are generally marl, siliceous limestone, and radiolarian chert, whereas in the southern part of the basin resedimented limestones occur. The studied succession
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18

Herngreen, G. F. Waldemar, Wim F. P. Kouwe, and Theo E. Wong. "The Jurassic of the Netherlands." Geological Survey of Denmark and Greenland (GEUS) Bulletin 1 (October 28, 2003): 217–30. http://dx.doi.org/10.34194/geusb.v1.4652.

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A recent revision of the lithostratigraphy of the Netherlands has triggered an extensive re-evaluation of existing ideas on the Jurassic structural and depositional history. Significant advances can be attributed to the incorporation of sequence stratigraphic concepts. In the course of the Triassic and Jurassic, structural complexity increased progressively. The Jurassic sedimentary succession can be subdivided into three depositional megasequences. Megasequence I (Rhaetian– Aalenian) reflects the period between the so-called early and mid-Cimmerian tectonic phases. Megasequence II (Aalenian –
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19

Surlyk, Finn. "The Jurassic of East Greenland: a sedimentary record of thermal subsidence, onset and culmination of rifting." Geological Survey of Denmark and Greenland (GEUS) Bulletin 1 (October 28, 2003): 657–722. http://dx.doi.org/10.34194/geusb.v1.4674.

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The Late Palaeozoic – Mesozoic extensional basin complex of East Greenland contains a record of deposition during a period of Rhaetian – Early Bajocian thermal subsidence, the onset of rifting in the Late Bajocian, its growth during the Bathonian–Kimmeridgian, culmination of rifting in the Volgian – Early Ryazanian, and waning in the Late Ryazanian – Hauterivian. The area was centred over a palaeolatitude of about 45°N in the Rhaetian and drifted northwards to about 50°N in the Hauterivian. A major climate change from arid to humid subtropical conditions took place at the Norian–Rhaetian trans
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20

Rousseau, Mathieu, Gilles Dromart, Henk Droste, and Peter Homewood. "Stratigraphic organisation of the Jurassic sequence in Interior Oman, Arabian Peninsula." GeoArabia 11, no. 1 (2006): 17–50. http://dx.doi.org/10.2113/geoarabia110117.

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ABSTRACT A Stratigraphic model is proposed for the Jurassic sequence in Interior Oman. The model is based on regional well-log correlations, outcrop analysis and integration of Biostratigraphy. Large-scale architectures are restored using a well-to-well correlation technique, after the well-log markers of the relevant surfaces of sequence stratigraphy are identified. This identification is achieved by comparing well-log signatures to lithological and sedimentological columns of nearby exposed sections. The subsurface dataset consists of 19 wells arranged in two east-west profiles, 341 km and 3
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21

Velić, Ivo. "Stratigraphy and Palaeobiogeography of Mesozoic Benthic Foraminifera - Part 1." Geologia Croatica 60, no. 1 (2007): 1–113. http://dx.doi.org/10.4154/gc.2007.01a.

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The Adriatic Carbonate Platform (AdCP), was a separate shallowmarine depositional system characterized by a lack of terrigenous input and was connected to Gondwana towards the South via Gavrovo–Tripolitza or Apulia. It existed for approximately 120 MY, from the Early Jurassic Pliensbachian/Toarcian) to the end of the Cretaceous, resulting in a 4000–6500 m thick succession of almost pure carbonates. However, this is part of a thicker (>8000 m) sequence of predominantly carbonate rocks which forms the Karst Dinarides, and was deposited during more than 270 MY – at least from the Carboniferous
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22

Sha, Jingeng, Yanan Fang, Jinhui Cheng, et al. "Geologic and chronostratigraphic overview of the Upper Triassic and Jurassic successions of the Junggar Basin, NW China." Geological Society, London, Special Publications 538, no. 1 (2023). http://dx.doi.org/10.1144/sp538-2022-106.

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Abstract The vast, widely-exposed terrestrial (lacustrine to fluvial) Upper Triassic-Jurassic (except Tithonian), successions of the Junggar Basin, not only record most of the stratigraphic boundaries of the Upper Triassic and Jurassic, including the Triassic-Jurassic boundary (TJB), Hettangian-Sinemurian, Sinemurian-Pliensbachian, Pliensbachian-Toarcian, Lower-Middle Jurassic, Middle-Upper Jurassic, Oxfordian-Kimmeridgian boundaries, but also record a range of the geologic, organic, palaeogeographic, palaeoclimatic events, known to have happened globally in the Late Triassic and Jurassic. The
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23

Ayoub-Hannaa, Wagih S., Michael R. Cooper, Ahmed A. Abdelhady, and Franz T. Fürsich. "Jurassic Trigoniida (Bivalvia) from Gebel Maghara, northern Sinai, Egypt." Journal of Paleontology, January 25, 2024, 1–27. http://dx.doi.org/10.1017/jpa.2023.79.

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Abstract The Jurassic trigoniid bivalves of Gebel Maghara, northern Sinai, Egypt are described and figured. They belong to 14 species, nine genera, and two families. The identified taxa occur in rocks ranging in age from the Toarcian (Lower Jurassic) to the lower Kimmeridgian (Upper Jurassic). Five genera and one species are new: Magharitrigonia asymmetrica new genus new species; Cotswoldella aff. C. hemisphaerica (Lycett, 1853); Cornbrashella pullus (J. de C. Sowerby, 1826); Parorthotrigonia lepidomorpha (Abdallah and Fahmy, 1969); and Retetrigonia imbricata (J. de C. Sowerby, 1826). Five spe
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24

Velić, Ivo. "Stratigraphy and Palaeobiogeography of Mesozoic Benthic Foraminifera - Part 2." Geologia Croatica 60, no. 1 (2007). http://dx.doi.org/10.4154/gc.2007.01b.

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The Adriatic Carbonate Platform (AdCP), was a separate shallowmarine depositional system characterized by a lack of terrigenous input and was connected to Gondwana towards the South via Gavrovo–Tripolitza or Apulia. It existed for approximately 120 MY, from the Early Jurassic Pliensbachian/Toarcian) to the end of the Cretaceous, resulting in a 4000–6500 m thick succession of almost pure carbonates. However, this is part of a thicker (>8000 m) sequence of predominantly carbonate rocks which forms the Karst Dinarides, and was deposited during more than 270 MY – at least from the Carboniferous
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25

Velić, Ivo. "Stratigraphy and Palaeobiogeography of Mesozoic Benthic Foraminifera - Part 3." Geologia Croatica 60, no. 1 (2007). http://dx.doi.org/10.4154/gc.2007.01c.

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Abstract:
The Adriatic Carbonate Platform (AdCP), was a separate shallowmarine depositional system characterized by a lack of terrigenous input and was connected to Gondwana towards the South via Gavrovo–Tripolitza or Apulia. It existed for approximately 120 MY, from the Early Jurassic Pliensbachian/Toarcian) to the end of the Cretaceous, resulting in a 4000–6500 m thick succession of almost pure carbonates. However, this is part of a thicker (>8000 m) sequence of predominantly carbonate rocks which forms the Karst Dinarides, and was deposited during more than 270 MY – at least from the Carboniferous
APA, Harvard, Vancouver, ISO, and other styles
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