Geometry and Cenozoic evolution of the Crimean fold-thrust belt from cross-section balancing and kinematic forward modeling
Journal Title: Геофизический журнал - Year 2018, Vol 40, Issue 2
Abstract
The Crimean fold-thrust belt comprises the onshore Crimean-dome fold-thrust belt and the offshore Sorokin accretionary wedge, a sub-surface imbricate stack with high oil and gas potential. We combine geomorphological and balanced cross-section analyses with published low-temperature thermo¬chronology and offshore seismic data to constrain both its present geometry and Cenozoic structural evolution. We interpret the Crimean dome as a map-scale, ramp-related antiform above the Main Crimean thrust, the basal detachment to the onshore part of the fold-thrust belt. The Main Crimean thrust separates the continental Scythian plate from the transitional to oceanic Eastern Black-Sea basin and likely reactivates an Upper Triassic–Lower Jurassic passive continental margin structure. The Crimean fold-thrust belt has accommodated ~24 km shortening since the Eocene, with ~12 km contraction each in the thick-skinned Crimean dome and the thin-skinned Sorokin accretionary wedge. The intermediate geometries in the kinematic evolution traced by the kinematic forward model are testable by future hydrocarbon exploration and thermochronologic studies.
Authors and Affiliations
M. Nakapelyukh, V. Belskyi, L. Ratschbacher
Keywords
Related Articles
- EP ID EP282053
- DOI 10.24028/gzh.0203-3100.v40i2.2018.128877
- Views 54
- Downloads 0
Secular variations of geomagnetic declination in the Karadag point and the global helio-geodynamic processes
To study the changes in the local variations of geomagnetic field, the Karadag point was chosen due to the fact that we found previously on increased insolation and the surface temperature of the earth at this point over...
Mikhail Ivanovich Tolstoy (03.03.1928—15.06.2017)
Mikhail Ivanovich Tolstoy (03.03.1928—15.06.2017)
Secular variations of the geomagnetic field at the African plate
Geomagnetic secular variations at the African plate consist of shortperiod and longperiod components. Shortperiod SV depends on solar activity. To separate longperiod SV for the Athens magnetic observatories with confide...
The experiment of integrated mobile technologies used for deep hydrocarbon accumulation prospecting and geophysical mapping at the West Antarctic bottom structures
The data obtained confirm earlier assumption about possible existence of large accumulations of oil and gas hydrates in this part of the West Antarctica. Their formation in the structures of passive continental margin of...
Three-dimensional deep geoelectric model of the Tarasivka structure of the Golovanivsk suture zone
In 2017 the field simultaneous areal measurements of the external low-frequency natural electromagnetic field of the Earth and the construction of a three-dimensional deep resistivity distribution in the crust of the Tar...