Mesozoic to recent geological history of southern Crimea and the Eastern Black Sea region

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.

本数据集综合了中生代至新生代期间南克里米亚地质演化历史的地层数据，旨在揭示南克里米亚造山带的三套主要巨型层序：分别为三叠纪-早侏罗纪、阿勒尼阶-巴通阶以及卡尔洛夫阶-古新统。晚三叠纪-早侏罗纪沉积物形成于弧前盆地和残留盆地的环境之中，阿勒尼阶-巴通阶沉积物则形成于俯冲拉伸带和火山带之上。在南克里米亚地区，可识别出三个主要的卡尔洛夫阶-古新统构造单元：（1）南克里米亚大陆架盆地；（2）苏达克深水槽；（3）位于沙茨基脊北缘的阿尔查克-卡亚大陆架盆地。奥利地纪-第四纪沉积物被认为与造山同期。建议对沙茨基脊中侏罗纪、卡尔洛夫阶-晚侏罗纪、新近纪、阿普特阶-阿尔比阶、晚白垩纪-古新统、古新统以及迈科普阶的预期地层单元进行描述。我们提出了一个关于东黑海盆地地质历史的模型。在晚巴雷姆阶-阿尔比阶时期，未来东黑海盆地的位置形成了裂谷，而在阿尔比阶时期发生了一段时间的火山活动。主要的海底扩张和裂谷作用阶段发生在晚康尼亚阶-桑托尼亚阶时期。