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 86
- Downloads 0
The geographical, geological and mining completion by Rosatom of the life cycle of nuclear energy waste
The issues of possible optimal burial of nuclear power plant waste in Russia are considered.
Three-dimensional geoelectric model of the Golovanevsk suture zones of the Ukrainian Shield
Thorough three-dimensional deep model has been plotted for the first time for the Golovanivsk suture zone of the Ukrainian shield and adjacent area applying Mtd3fwd R. L. Mackie's program based on geophysical experiment...
Predicting Depth of Mineral Deposit using Gravity-Density Downward Correlation by Fourier Transform
Residual gravity anomalies are the superposition of effects originating from several interfaces in the subsurface. In downward projection of the anomalies for the determination of the depth of the particular substructure...
The memory of Vladimir Schuman - a scientist, citizen, patriot (on the occasion of his 75th birthday)
The memory of Vladimir Schuman - a scientist, citizen, patriot (on the occasion of his 75th birthday)
Characteristic time of thermal and diffusional relaxation
It is shown that frequently used dimensional estimation of a layer thermal relaxation time, tr, as L2/κ based on the layer thickness, L, and thermal diffusivity, κ, strongly overestimates tr. The correct estimate tr=L2/π...