We provide a synthesis of stratigraphic data to unravel the history of the geological evolution of South Crimea in the Mesozoic and Cenozoic. The South Crimea Orogen consists of three major mega-sequences: (1) the Triassic–Early Jurassic; (2) the Aalenian–Bathonian; and (3) the Callovian–Eocene. The Late Triassic–Early Jurassic deposits formed in the environment of a forearc basin and a remnant basin. The Aalenian–Bathonian deposits formed above subduction extension and a volcanic belt. Three main Callovian–Eocene tectonic units can be identified in South Crimea: (1) the South Crimean Shelf Basin; (2) the Sudak Deepwater Trough; and (3) the Alchak–Kaya Shelf Basin at the northern margin of the Shatsky Ridge. The Oligocene–Quaternary deposits are considered to be syn-orogenic. A description of the anticipated stratigraphic units on the Shatsky Ridge is suggested for the Middle Jurassic, Callovian–Late Jurassic, Neocomian, Aptian–Albian, Late Cretaceous–Paleocene, Eocene and Maykopian. We propose a model for the geological history of the Eastern Black Sea Basin. Graben formed during the Late Barremian–Albian at the location of the future Eastern Black Sea Basin and a phase of volcanism occurred in the Albian. The main phase of rifting and spreading of oceanic crust took place during Cenomanian–Santonian time.Supplementary material: A Google Earth kmz file of the location of the outcrops and sections is available at http://www.geolsoc.org.uk/SUP18850
The basement of the northeastern periphery of the East-European Craton (ЕЕС) is composed of volcanic-sedimentary sequences, volcanic rocks, granitoids, and rare ophiolite complexes. Geochronological data constrain their age from ca. 750 to 500 Ma, and there is a consensus that these rocks represent relicts of a late Neoproterozoic-Cambrian Pre-Uralides-Timanides orogeny. Combining new integrated isotopic (U-Pb, Lu-Hf) and trace-element data (TerraneChrone ® approach) on detrital zircons from sandstones of the lower Cambrian Brusov Formation in the Mezen basin (White Sea region in the northeastern periphery of the EEC) with available studies on detrital zircons from Neoproterozoic-middle Cambrian (meta) sedimentary units of the northeastern periphery of the EEC allow us to conclude that (1) the onset of the Arctida-Baltica collision can now be constrained to the time interval between ca. 540 and 510 Ma and (2) the Ediacaran-early Cambrian Mezen sedimentary basin was a basin on the Timanian passive margin of Baltica up to 540 Ma, but was not a foreland basin of the Pre-Uralides-Timanides orogen.
Paleozoides of fold-nappes belts in the framing of East-European Craton (EEC)
Me So-andNeoproterozoic filling of riftogenic structures (rifts, aulocogens, etc.) within the EEC Me so-and Neoproterozoic complexes, and rare reworked Archean-Paleoproterozoic complexes of relics of accretionary and collisional belts of north-western and western parts of the EEC Complexes of the Meso and Neoproterozoic accretionary belts and collisional orogens Complexes of the Paleoroterozoic collisional orogens Paleoproterozoic complexes of Fennoscandia, Volga-Uralia and Sarmatia Nonuniformly metam orphosed Neoproterozoic to Middle Cambrian complexes: Pre-Uralides-Timanides of Western Urals and Timan-Pechora-Barents Sea Region, and their ages analogues of near-Uralian part of EEC and Scandinavia (Finmarken and the lowest units of the Caledonian nappes), and Cadomides-Avalonides of the southern and SE frame of EEC Pre-Uralides-Timanides: a -mostly sedimentary complexes;
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