Topography of the crust–mantle boundary beneath the Black Sea Basin

Starostenko, V. I.; Buryanov, V. B.; Makarenko, I. B.; Rusakov, О. M.; Stephenson, Randell; Никишин, А. М.; Georgiev, Georgi V.; Gerasimov, M. Ye.; Dimitriu, Radu; Legostaeva, О. V.; Pchelarov, V.; Sava, Constantin Ștefan

doi:10.1016/j.tecto.2002.08.001

Cited by 97 publications

(52 citation statements)

References 18 publications

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“…The basin is 2-3 km shallower than previously inferred [Belousov et al, 1988;Starostenko et al, 2004], so the thermal structure of the basin sediments may differ signifi cantly from existing models.…”

Section: Initial Resultsmentioning

confidence: 73%

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Seismic data reveal eastern Black Sea basin structure

et al. 2005

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Rifted continental margins are formed by progressive extension of the lithosphere. The development of these margins plays an integral role in the plate tectonic cycle, and an understanding of the extensional process underpins much hydrocarbon exploration. A key issue is whether the lithosphere extends uniformly, or whether extension varies with depth. Crustal extension may be determined using seismic techniques. Lithospheric extension may be inferred from the waterloaded subsidence history, determined from the pattern of sedimentation during and after rifting. Unfortunately, however, many rifted margins are sediment‐starved, so the subsidence history is poorly known.

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Section: Initial Resultsmentioning

confidence: 73%

“…The initial analysis has focused on a subset of OBSs from the center of the basin where gravity models indicate that the crust is thinnest [Starostenko et al, 2004]. Observedseismic travel times were compared with those computed from simplified models of crustal structure [Zelt and Smith, 1992].…”

Section: Initial Resultsmentioning

confidence: 99%

Seismic data reveal eastern Black Sea basin structure

et al. 2005

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“…Wide-angle seismic data revealed the thinned continental crust beneath the Ar Ridge of ca. 30 km thick [Shillington et al, 2009, Line 3;Scott, 2009] that is equal to the value on the map of [Starostenko et al, 2004a]. This crustal basement is thought to be similar with Precambrian units from the Transcaucasus domain [Saintot et al, 2006].…”

Section: Introductionmentioning

confidence: 87%

“…2). They were made during 55 years by various industrial and academic organizations from the Former Soviet Union including the Institute of Geophysics of the National Academy of Sciences of Ukraine [Starostenko et al, 2004a]. The map is much more detailed and informative than those of published earlier [Belousov et al, 1988;Spadini et al, 1996;Starostenko et al, 2004a;Sandwell, Smith, 2009;Yegorova, Gobarenko, 2010].…”

Section: Introductionmentioning

confidence: 99%

“…In 3D gravity modeling we applied the efficient methodology described in details elsewhere [Hammer, 1963;Starostenko et al, 2004a]. A principal advantage of this approach over others is possibility of quantitative estimating regional and local differences between observed and modeled fields over large areas by determining gravity contribution within a single reference system.…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields

Rusakov

Pashkevich

Кутас

et al. 2017

Geofizicheskiy Zhurnal

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Magnetic, gravity, geothermal, seismic and tomographic data from the lithosphere were first jointly examined. A multidisciplinary interpretation has resulted in a new and consistent model for lithospheric density, magnetic, thermal and velocity heterogeneities. Faults of different orders for the crystalline crust have been mapped in details. Large deep fault zones were recognized. Among them is the most prominent Odessa-Sinop-Ordu (OSO) fault zone, which played a key role in the opening and development of the Black Sea Depression. A fundamental difference was revealed between the crustal and mantle structure and geophysical parameters of the Western Black Sea Basin (WBSB) and Eastern Black Sea Basin (EBSB). These dissimilarities are in the size of «non-granitic» crust, pattern and intensity of heat flow, topography of the lower boundary of the thermal lithosphere, mantle seismic velocity and structure of magnetic and residual gravity anomalies. Based on new information it was demonstrated that the WBSB and EBSB were diachronously formed on two large distinct continental blocks with independent post-rift development of the sub-basins. The rifting of the western sub-basin commenced earlier than that of the eastern one. The EBSB is characterized by younger thermal activity than the WBSB and consequently it was stabilized later. The Mid Black Sea High (MBSH) is not a single tectonic unit but is formed by two ridges of various crystalline crustal structure and age shifted relative to each other by the faults of the OSO zone.Key words: The Black Sea basins, magnetics, gravity, heat flow, fault tectonics, seismic tomography, lithosphere heterogeneity.Впервые проведен общий анализ магнитных, гравитационных, геотермических, сейсми-ческих и томографических данных о литосфере Черного моря. В результате комплексной интерпретации получена новая и согласованная модель плотностной, магнитной, термаль-ной и сейсмической неоднородностей литосферы. Построена подробная карта разломов консолидированной коры разных рангов. Выявлены зоны глубинных разломов. Среди них наиболее примечательна зона разлома Одесса-Синоп-Орду, игравшая ключевую роль в рас-крытии и развитии Черноморской впадины. Выявлены фундаментальніе различия в строе-нии и геофизических параметрах коры и литосферы Западно-и Восточно-Черноморской впадин. Эти различия заключаются в размере площади «безгранитной» коры, структуре и интенсивности теплового потока, топографии нижней границы термальной литосферы, осо-бенностях магнитного и остаточного гравитационного полей. На основе новой информации показано, что Западно-и Восточно-Черноморская впадины сформировались в разное время на двух различных крупных блоках континентальной коры с независимым пострифтовым развитием суббассейнов. Рифт в западном бассейне образовался раньше, чем в восточном. Восточно-Черноморская впадина отличается более молодой термической активностью, чем Западно-Черноморская, которая стабилизировалась позже. Центрально-Черноморское под-нятие не представляет собой единую тектоническую единицу, а сформиро...

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