Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling

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Datum:2010
Hauptverfasser: Starostenko, V., Kuprienko, P., Makarenko, I., Legostaeva, O., Savchenko, A.
Format: Artikel
Sprache:English
Veröffentlicht: Інститут геофізики ім. С.I. Субботіна НАН України 2010
Schriftenreihe:Геофизический журнал
Online Zugang:http://dspace.nbuv.gov.ua/handle/123456789/103084
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Zitieren:Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling / V. Starostenko, P. Kuprienko, I. Makarenko, O. Legostaeva, A. Savchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 170-173. — Бібліогр.: 6 назв. — англ.

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spelling irk-123456789-1030842016-06-14T03:03:32Z Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling Starostenko, V. Kuprienko, P. Makarenko, I. Legostaeva, O. Savchenko, A. 2010 Article Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling / V. Starostenko, P. Kuprienko, I. Makarenko, O. Legostaeva, A. Savchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 170-173. — Бібліогр.: 6 назв. — англ. 0203-3100 http://dspace.nbuv.gov.ua/handle/123456789/103084 en Геофизический журнал Інститут геофізики ім. С.I. Субботіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
format Article
author Starostenko, V.
Kuprienko, P.
Makarenko, I.
Legostaeva, O.
Savchenko, A.
spellingShingle Starostenko, V.
Kuprienko, P.
Makarenko, I.
Legostaeva, O.
Savchenko, A.
Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
Геофизический журнал
author_facet Starostenko, V.
Kuprienko, P.
Makarenko, I.
Legostaeva, O.
Savchenko, A.
author_sort Starostenko, V.
title Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
title_short Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
title_full Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
title_fullStr Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
title_full_unstemmed Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling
title_sort variations in the crustal types of the dnieper-donets basin and surrounding areas from 3d gravity modelling
publisher Інститут геофізики ім. С.I. Субботіна НАН України
publishDate 2010
url http://dspace.nbuv.gov.ua/handle/123456789/103084
citation_txt Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling / V. Starostenko, P. Kuprienko, I. Makarenko, O. Legostaeva, A. Savchenko // Геофизический журнал. — 2010. — Т. 32, № 4. — С. 170-173. — Бібліогр.: 6 назв. — англ.
series Геофизический журнал
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AT makarenkoi variationsinthecrustaltypesofthednieperdonetsbasinandsurroundingareasfrom3dgravitymodelling
AT legostaevao variationsinthecrustaltypesofthednieperdonetsbasinandsurroundingareasfrom3dgravitymodelling
AT savchenkoa variationsinthecrustaltypesofthednieperdonetsbasinandsurroundingareasfrom3dgravitymodelling
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fulltext ������� ��� ����� ���� �3* ������������� �� !"# $ %& '( )�& �*�* Variations in the crustal types of the Dnieper-Donets Basin and surrounding areas from 3D gravity modelling V. Starostenko, P. Kuprienko, I. Makarenko, O. Legostaeva, A. Savchenko, 2010 Institute of Geophysics, National Academy of Sciences of Ukraine, Kiev, Ukraine irinam@igph.kiev.ua There are two reasons for constructing a new three-dimensional density model of the Dnieper- Donets Basin (DDB) and surrounding areas. 1) A lack of reliable data on the structure of the deep horizons in the sedimentary cover and crystalline crust. 2) Recently fresh geological and geophysical data have been obtained for the upper sedimentary layers (up to depths of 5—6 km) from seismic data (DSS and MCSP) along the DOBRE1 and DO- BRE2 profiles [Grad et al., 2003, Maystrenko et al., 2003]. In this study modern software has been applied [Starostenko et al., 1997; 2004]. It has a principal advantage over standard approaches because den- sity maps of individual layers are automatically in- put into a PC, enabling geological environments to be approximated very accurately. A technique of con- structing a 3D model and converting it into a sche- matic map of layers types are described in detail elsewhere [Kuprienko et al., 2007]. 3D modelling has resulted in a new pattern of the density for the whole crust of the DDB and sur- rounding areas. It has been used to compile sche- matic maps for a thickness of the "granitic, "diorit- ic" and "basaltic" layers (the upper, middle and lo- wer crust). Earlier based on the generalization of relationships of velocity vs. depth and density vs. velocity for different types of the crust, it has been put forward a conditional subdivision of the whole crust into three stages without sharp boundaries be- tween them. They have been defined as the upper, middle and lower crust. Due to traditions they have been named as "granitic, "dioritic" and "basaltic" lay- ers. Their parameters are as follows: 1) <2.75 gcm 3, VP<6.30 kms 1; 2) =2.75 2.90 gcm 3, VP=6,30 6,80 kms 1; 3) >2.90 gcm 3, VP>6.80 kms 1 re- spectively. Petrologically the first range of the pa- rameters is a mixture of acid and intermediate rocks. The second series is composed of a mixture of in- termediate and basic rocks (granodiorites, diorites, charnokites, many gneisses, shists, metabasic rocks, and gabbroids). The third row consists of in- trusive rocks of basic and ultrabasic composition and metamorphic rocks (granulites, amphibolites) [Lithospheric …, 1993]. A relationship of a thickness of each layer to a total thickness of the crust demonstrates the con- tribution of each layer into a total thickness of the crust. The name of the crustal type corresponds to prevailing portion of any layer. The portion of "granitic" layer (Fig. 1, a) within the DDB iz characterized by a ratio of 0—0.4. The highest values correspond to the southern flank of Poltavskii megabloc (0.4), the northern side and the southern preflank zone of the Lokhvitskii and Pol- tavskii megablocs, as well as most of the northern flank, where the percent ratio is 0,3. The smallest proportion of the layer belongs to the central zone of megablocs (0.0—0.1). On the rest of the areas layer portion is 0.0—0.2. The portion of "dioritic" layer (Fig. 1, b) is the largest in the south of the DDB, in south-east of the northern flank, in the central zone and southern pre- flank zone of the Chernigovskii, and Poltavskii and Lokhvitskii megablocs (0.4—0.5). A small portion of this layer occurres in the southeastern part of the central zone of the Iziumskii megabloc and in the north-western Donbass (0.0—0.1). The rest of the area is characterized by the values of 0.2—0.3. The maximum portion of the "basalt" layer (Fig. 1, c) is associated with the north-western Chernigovskii megablock and the north-western part of the central zone in the Lokhvitskii megabloc, the south-eastern Iziumskii megablock and the whole Donbass (0.5— ������������� �� !"# $ %& '( )�& �*�* �3� +,� �-.�,/�0 ��. ��� �1��, ��0. 0� 0���,� ��� ����� �� Fig. 1. Contribution of the "granitic" (a), "dioritic" (b) and "basaltic" (c) layers to a whole thicness of the crust in the Dnieper- Donets Basin and Donbass: 1 — the boundary of the DDB; 2 — the boundary of the northern flank of the DDB; 3 — the longitudinal division of the DDB (after Arsiriy et al., 1984) zones: A — northern flank, B — sothern flank, C — Central; 4 — the transversal division of the DDB (after Dolenko and Varich, 1989) megablocks: Ch — Chernigovskii, L — Lokhitskii, P — Poltavskii, Iz — Iziumskii, D — Donbass. 0.7). The smallest ratio of the layer (0.2) is related to the southern preflank zone of the Poltavskii megabloc and the northern edge of the Iziumskii megablock. In the rest of area the ratio is 0.3—0.4. ������� ��� ����� ���� �3� ������������� �� !"# $ %& '( )�& �*�* Fig. 2. Schemetic map of prognostic composition of the Earth’s crust in the DDB and Donbass from 3D gravity modelling. See Fig. 1 for conventions. Based on this information, six types of the crust are determined for the DDB and Donbass (Fig. 2). The granitic-dioritic crustal type has the smal- lest distribution which mainly occurs on the sou- thern flank of VCM (the Svatovo-Troitskii, Rossos- hanskyii blocks). Its small massif occurs on the northern flank of the Ush (the southern flank of the Poltavskii megablock). The dioritic type of the crust is distributed in the northwest and central parts of the southern slope of VCM, in the southeast of the northern flank zone of the Chernigovskii and Poltavaskii megablocs, in the northern flank zone of the Lokhvitskii block, in al- most whole southern flank zone, on the southern edge, as well as in northern and southern Donbass. Leykobazaltic type of the crust is characteristic of the north-western Chernigovskii and Lokhvitskii megablocs, north-western parts of the northern flank zone in the Chernigovskii, Poltavskii, Iziumskii megablocs, as well as the north-western portion of the southern flank zone of the Iziumskii megabloc. Dioritic-basaltic type dominates in the central region of Poltavskii and the south-east of the cen- tral zone of the Lokhvitskii megablocs. Basaltic type of the crust is spread in the south- east of the northern and southern flank zones of the Iziumskii megabloc, the most part of Donbass, in the central zone and in the north-western part of the southern preflank in the Chernigovskii megabloc. An isometric area is present in the southern part of the central zone in the Iziumskii megabloc. Basaltic-dioritic type of the crust occurs only in the central zone of the Iziumskiy megabloc. Its pa- rameters are intermediate between basaltic type, which is distributed in the central part of the Don- bass, and diorititic — basaltic, typical for the cen- tral zone of DDB. A question arises whether the belt of the basalt-diorite type of the crust is the transitional zone between the DDB and Donbass? We should like to give a positive answer to this ques- tion. In conclusion, the granitic-dioritic type of the crust dominates in the flank zones while the basaltic and basaltic-dioritic types are spread in the central belt of the DDB and Donbass. It demonstrates the in- crease in basicity of the rocks from the flanks to the centre of the depression that proves an axial compaction. Grad Y., Gryn’ D., Guterch A., Janik T., Veller R., Lang R., Lyngsie S. B., Omelchenko V. D., Staros- tenko V. I., Stephenson R. A., Stovba S. N., Thy- bo H., Tolkunov A. DPBRE-fraction’99—velocity model of the crust and upper mantle beneath the Donbas Foldbelt (East Ukraine) // Tectonophysics. — 2003. — 371, �51—4. — P. 81—110. References Maystrenko Y., Stovba S., Stephenson R., Bayer U., Menyoli E., Gajewski D., Huebscher C., Rabbel W., Saintot A., Starostenko V., Thybo H., Tolkunov A. Crustal-scale pop-up structure in cratonic litho- sphere: DOBRE deep seismic reflection study of the Donbas fold belt, Ukraine // Geology. — 2003. — 31, � 8. — P. 733—736. ������������� �� !"# $ %& '( )�& �*�* �3) +,� �-.�,/�0 ��. ��� �1��, ��0. 0� 0���,� ��� ����� �� Starostenko V. I., Legostaeva O. V., Makarenko I. B., Pavlyuk E. V., Sharypanov V. M. On automated com- putering geologic-geophysical maps images with the first type ruptures and interactive regime visu- alization of three-dimensional geophysical models and their fields // Geophys. J. — 2004. — 26, �51. — P. 3—13 (in Russian). Starostenko V. I., Matsello V. V., Aksak I. N., Ku- lesh V. A., Legostaeva O. V., Yegorova T. P. Automa- tion of the computer input of images of geophysi- cal maps and their digital modeling // Geophys. J. — 1997. — 19, �51. — P. 3—13 (in Russian). Kuprienko P. Ya., Makarenko I. B., Starostenko V. I., Legostaeva O. V. 3-D density model of the Earth’s crust and upper mantle of the Ukrainian Shield // Geophys. J. — 2007. — 29, �55. — P. 3—27 (in Russian). Lithospheric of the Central and East Europe . Generali- zation of the researches results / Ed. A. V. Chekunov. — Kiev: Nauk. dumka, 1993. — 258 p��(in Russian).