V.A. Viginsky (Russia)
Alpine tectonic reconstruction OF eastern Mezotethys western Part (Black
Azov and Black Sea basin originated in the western
part of Eastern
Eurasian and Arabian geoplates were together with the intervening
Rodopian-Pontian suture during Mid-Late Cretaceous. There is blueschist belt
occurs immediately south of this suture in northwest Turkey under Cretaceous (~88 Ma) oceanic accretionary complex. A peridotite subvertical
slab lies along tectonic contact over the blueschists
and the accretionary complex.
Black Sea composed of two basins separated by the
transform Andrusov-Arkhangelsky lineament. These
basins were most likely boundary seas restricted by the volcanic rear arcs (the
and the Novator swell) over the continental Baikalid crust. For example, the well-known "Anaurian" layer of the Cenomanian age within the
Caucasian Novorossiysk flysch foredeep contains a substratial
admixture of pyroclastic andesites.
And on the north-east of Novator palaeoarc
(Lomonosov Massive) last time discovered effusive
vulcanites with north-west shoshonite trend.
Benioff zone originated during the final stages of the Mezotethys
shutting along the southern slope of the East Black Sea rear arc, in such a case the
existing Yalta focus centre of rather deep focus earthquakes seems to be the remnant
of the Benioff zone. A similar zone seemed to exist along the southwestern Novator swell slope
too. The flysch troughs of the North-Eastern Caucasus and the Cisbalkanian mountains, including the Asparukh
depression, which were forming at the same time in supposed island arc rear
areas, were compensation character.
International Conference and Exhibition (Barcelona)