Popov V.V.

All Russia Petroleum Research Exploration Institute (VNIGRI)
St. Petersburg, Russia
ins@vnigri.ru

Graduated from Leningrad State University, the Faculty of Physics, specialization «geophysics» in 1988.
Researcher of the Laboratory of magnetostratigraphy and paleomagnetic reconstructions, VNIGRI.
Area of scientific interest: paleomagnetism (paleogeodynamics, magnetostratigraphy), rock magnetism, equipment for paleomagnetic research, programming.
Author of 37 publications.

Stratigraphy and lithology

Section editor – PhD in geology and mineralogy Kirichkova A.I.

Article # 43_2014	submitted on 10/08/2014 displayed on website on 10/18/2014
21 p.	Sal'naya N.V., Popov V.V., Rodionov V.P., Yakubson A.M., Iosifidi A.G.
pdf	Paleomagnetic research of the Paleozoic sections of Polar Urals (Paga River)
	Paleomagnetic studying of Cambrian-Ordovician-Devonian collection of Paleozoic deposits of the Paga River valley has been carried out. The results of paleomagnetic research show a two-component structure of natural residual magnetization (NRM). The identified typical components are postfolded. The estimates of horizontal turns of structures are executed. The possible model of magnetic reversal of the studied deposits has been realized. Keywords: paleomagnetic vectors, anisotropy of magnetic susceptibility, overthrust, Polar Urals.
article citation	Sal'naya N.V., Popov V.V., Rodionov V.P., Yakubson A.M., Iosifidi A.G. Paleomagnitnye issledovaniya paleozoyskikh otlozheniy Pripolyarnogo Urala, reka Paga [Paleomagnetic research of the Paleozoic sections of Polar Urals (Paga River)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2014, vol. 9, no. 4, available at: http://www.ngtp.ru/rub/2/43_2014.pdf
DOI	https://doi.org/10.17353/2070-5379/43_2014

References

   Chadima, M., Hrouda, F. Remasoft3.0 a user-friendly paleomagnetic data browser and analyzer. 2006. TravauxGeophysiques, XXVII, 20-21.
   Chadima, M., Jelinek, V. 2009. Anisoft 42: www.AGICO.com.
   Elmore R.D., Kelley J. Evans M., Lewchuk M.T., 2001. Remagnetisation and orogenic fluids: testing the hypothesis, Applications. Geophys. J. Int., 144, 568-576.
   Enkin R.J. A computer program package for analysis and presentation of palaeomagnetic data // Pacific Geoscience Centre, Geol. Survey Canada. Sidney. 1994. 16 p.
   Enkin R.J. The direction - correction tilt test: an all-purpose tilt/fold test for paleomagnetic studies / Earth Planet. Sci. Lett., 212 (2003)151-166.
   Eremenko N.M., Zhuravlev A.V., Iosifidi A.G., Popov V.V., Khramov A.N., Vevel Ya.A., Nickolaev A.I. Razrez verhnego devona – nizhnego karbonana r. Talota (Timano-Pechorskaja provincija) - rezul'taty litologicheskih, biostratigraficheskih i paleomagnitnyh issledovanij [Upper Devonian – Lower Carboniferous key sequence on the Talota river, Timan-Pechora province – results of lithologic, biostratigraphic and paleomagnetic research]. Neftegazovaya Geologiya. Teoriya I Praktika, 2009, vol. 4, no. 4, available at: http://www.ngtp.ru/rub/2/45_2009.pdf
   Iosifidi A.G., Khramov A.N. K istorii razvitija nadvigovyh struktur Paj-Hoja I Poljarnogo Urala: paleomagnitnye dannye po rannepermskim i rannetriasovym otlozhenijam [To the history of thrust structures of the Pai-Khoi and Polar Urals: paleomagnetic data for Early Permian and Early Triassic sediments]. Neftegazovaya Geologiya. Teoriya I Praktika, 2010, vol. 5, no. 2, available at: http://www.ngtp.ru/rub/4/21_2010.pdf
   Iosifidi A.G., Khramov A.N. Magnitostratigrafiya verkhnepermskikh otlozheniy yugo-zapadnogo sklona Pay-Khoya, razrez r. Khey-yaga: sledy global'nogo permo-triasovogo krizisa [Magnetostratigraphy of Upper Permian south-western slope of the Pai-Khoi, section of Hey Yaga River: signs of the global Permo-Triassic crisis]. Fizika Zemli, 2009, no. 1, p. 5-15.
   Iosifidi A.G., Khramov A.N. O gertsinskikh deformatsiyakh na Pripolyarnom Urale [Hercynian deformation in the Polar Urals]. Fizika zemli, 1995, no. 11, p. 48-54.
   Iosifidi A.G., Khramov A.N. Paleomagnetizm paleozoyskikh otlozheniy razrezov r. Kozhim: K probleme palinspasticheskikh rekonstruktsiy Pripolyarnogo Urala i Pay-Khoya [Paleomagnetism of Paleozoic deposits of the section of Kozhim river: the problem of palinspastic reconstructions of the Polar Urals and Pai-Khoi]. Fizika Zemli, 2013, no. 1, p. 67–80.
   Iosifidi A.G., Khramov A.N. Paleomagnetizm permi i triasa Pay-Khoya i Polyarnogo Urala: k probleme gorizontal'nykh deformatsiy. Paleomagnetizm osadochnykh basseynov Severnoy Evrazii [Paleomagnetism of the Permian and Triassic Pai-Khoi and the Polar Urals: the problem of horizontal deformations. Paleomagnetism of sedimentary basins of Northern Eurasia]. Editor A.N. Khramov, 2007, p. 65-69.
   Iosifidi A.G., Khramov A.N. Paleomagnetizm verkhnekamennougol'nykh i rannepermskikh otlozheniy Vostochno-Evropeyskoy plity: klyuchevoy paleomagnitnyy polyus i kinematika kollizii s Uralom [Paleomagnetism of Upper Carboniferous and Early Permian deposits of the East European plate: a key paleomagnetic pole and kinematics of collision with the Urals]. Fizika Zemli, 2002, no. 5, p. 42-56.
   Iosifidi A.G., Khramov A.N., Trapeznikova G.V., Pukhonto S.K. Paleomagnetizm rannepermskikh otlozheniy Pechorskoy plity: otsenka gorizontal'nykh povorotov struktur [Paleomagnetism of Early Permian sediments of the Pechora plate: evaluation of horizontal rotations of structures]. Fizika Zemli, 2005, no. 2, p. 52-65.
   Khramov A.N., Oknova N.S. Puti issledovanija paleomagnitnyh zapisej s cel'ju reshenija problem neftjanoj geologii (na primere Timano-Pechorskoj provincii) [Ways of paleomagnetic records research for petroleum geology problems solution (Timan-Pechora province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2007, vol. 2, available at: http://www.ngtp.ru/rub/2/036.pdf
   Kirschvink J.L. The least-squares line and plane and the analysis of paleomagnetic data Geophys. J. Astronom. Soc. 1980. v. 62. p. 699-718.
   Komissarova R.A. Issledovanie drevney namagnichennosti nekotorykh osadochnykh porod Yuzhnogo Urala v svyazi s problemoy metakhronnogo peremagnichivaniya [The study of ancient magnetization of some sedimentary rocks of the Southern Urals in connection with the problem of metachronous magnetization reversal]. Dissertation for the degree of PhD in physical and mathematical sciences. - Moscow: IFZ, 1970, 140 p.
   McCabe C., Van der Voo R., Peacor D.R., Scotese C.R., Freeman R., 1983. Diagenetic magnetic carriers a remanence in some Palaeozoic sedimentary carbonates. Geology. 11, 221-223.
   McElhinny M.W. and Lock J. IAGA palaeomagnetic databases with Access, Surv. Geophys., 1996. 17, 575-591.
   Meere P.A., Banks D.A., 1997. Upper crustal fluid migration; an example from the variscides of SW Ireland. J. Geol. Soc. London, 154, pt 6, 975.
   Paleomagnetizm paleozoya [Paleozoic paleomagnetism]. Khramov A.N., Goncharov G.I., Komissarova R.A. et al. Leningrad: VNIGRI, 1974, vol. 335, 238 p.
   Paleomagnitologiya [Paleomagnetology]. Khramov A.N., Goncharov G.I., Komissarova R.A. et al. - Leningrad: Nedra, 1982, 312 p.
   Pisarevsky S.A. New edition of the global palaeomagnetic database. EOS Transactions. 2005. V. 66. P. 170.
   PopovV.V., 2007, 2008: http://paleomag.ifz.ru/soft.html
   Rzhevskiy Yu.S. Palinspasticheskaya skhema Tadzhikskoy depressii po paleomagnitnym dannym [Palinspastic sketch of Tajik depression on the basis of paleomagnetic data]. Dokl. ANTadzhSSR, 1977, vol. 20, no. 2, p. 42-44.
   Savel'ev A.A., Didenko A.N., Kurenkov S.A., Lubnina N.V. Paleomagnetizm ofiolitov Voykaro-Syn'inskogo massiva (Polyarnyy Ural) [Paleomagnetism of ophiolite Voikar-Syninsk massif (Polar Urals)]. Paleomagnetizm i magnetizm gornykh porod. Tezisy dokladov. Borok, 3-9 iyunya 1996 g., editor A.N. Didenko. Moscow: OIFZRAN, 1996, p. 77-79.
   Tektonicheskaya istoriya polyarnogo Urala [Tectonic history of the Polar Urals]. Editor N.V. Koronovskiy. - Tr. GINRAN; vol. 531, Moscow: Nauka, 2001, 191 p.
   Turner P., Rodgers J. Chemical remagnetization events during the diagenesis of red beds – applications to magnetostratigraphydiagenesis and palaeofluid migration. Earth Science Project, 2002, 5 pp.
   Watson G.S. and Enkin R.J. The fold test in palaeomagnetism as a parametr estimation problem / Geophys. Res. Lett., 1993, 20, 2135-2138
   Zhuravlev A.V., Vevel’ Ya.A., Iosifidi A.G., Tomsha V.A., Chermnykh V.A. Razrez verhnego devona – nizhnego karbona na myse Kostjanom ostrova Vajgach [Upper Devonian – Lower Carboniferous succession, Kostyanoy Cape, Vaygach Island]. Neftegazovaya Geologiya. Teoriya I Praktika, 2011, vol. 6, no. 1, available at: http://www.ngtp.ru/rub/2/6_2011.pdf
   Zijderveld J.D.A. A.C. Demagnetization of rocks analysis of results. In: Methods in Palaeomagnetism, Ed. Collinson D.W., Amsterdam, Elsevier. 1967. P.254-286.

Stratigraphy and lithology

Section editor – PhD in geology and mineralogy Kirichkova A.I.

Article # 11_2012	submitted on 01/23/2012 displayed on website on 02/06/2012
21 p.	Popov V.V., Zhuravlev A.V.
pdf	Anisotropy of various magnetic parameters use for determining directions of material transfer in the study of turbidite currents
	The carbonate clastic fans are considered as promising objects for oil and gas prospecting targets. Thus reconstruction of the fan morphology, sources and directions is an important practical task. The method for detecting the turbidite currents based on investigation of the anisotropy of susceptibility ellipsoids axes is described. The new model of main axes distribution is developed. Study of 13 objects allows us reconstructing directions of the turbidite currents of the Ural Foredeep for the two time-slices and draw maps demonstrating palaeogeographical position of the carbonate material sources. Key words: anisotropy, magnetic susceptibility, turbidites, direction of material transfer, paleogeography, reconstruction, fan morphology, Ural Foredeep.
article citation	Popov V.V., Zhuravlev A.V. Ispol'zovanie anizotropii razlichnykh magnitnykh parametrov dlya opredeleniya napravleniya snosa materiala pri izuchenii turbiditnykh potokov [Anisotropy of various magnetic parameters use for determining directions of material transfer in the study of turbidite currents]. Neftegazovaya Geologiya. Teoriya I Praktika, 2012, vol. 7, no. 1, available at: http://www.ngtp.ru/rub/2/11_2012.pdf

References

   Dopolnenie k stratigraficheskomu kodeksu 1992 goda [Supplement to the 1992 Code of stratigraphy]. Saint Petersburg: MSK, 2000.
   Enkin R.J. A computer program package for analysis and presentation of palaeomagnetic data // Pacific Geoscience Centre, Geol. Survey Canada. Sidney, 1994, 16 p.
   Fortunatova N.K. Sedimentatsionnye modeli karbonatnykh konusov vynosa – novykh neftegazopoiskovykh ob"ektov [Sedimentary model of carbonate clastic fan as new oil and gas prospecting objects]. Geologiya nefti i gaza, 2007, no. 2, pp. 61-69.
   Igoshin L.A. Magnitnaya anizotropiya gornykh porod [Magnetic anisotropy of rocks]. Ispol'zovanie magnetizma gornykh porod pri geologicheskoy s"emke. Editor Sholpo L.E. Leningrad: Nedra, 1986, pp. 133-153.
   Iosifidi A.G., Khramov A.N. Sredne- i pozdnepaleozoyskie etapy gorizontal'nykh dvizheniy v Barentsevo-Pechorskom regione i evolyutsiya ikh vzaimootnosheniy s Russkoy platformoy i Uralom po paleomagnitnym dannym [The Middle and Late Paleozoic stages of horizontal movements in the Barents-Pechora region and evolution of their relationship with the Russian Platform and the Urals according to the paleomagnetic data]. Mezhdunarodnaya geofizicheskaya konferentsiya. 300 let gorno-geologicheskoy sluzhbe Rossii [International Geophysical Conference. 300 Years of Mining and Geological Survey of Russia].Saint Petersburg, 2000, pp. 22-23.
   Khramov A.N. et al. Paleomagnitologiya [Paleo-magnetism].Leningrad: Nedra, 1982, 312 p.
   Kirschvink J.L. The least-squares line and plane and the analysis of paleomagnetic data Geophys.J.Astronom.Soc., 1980, vol. 62, pp. 699-718.
   Kochegura V.V. Primenenie paleomagnitnykh metodov pri geologicheskoy s"emke shel'fa [Application of paleomagnetic techniques for geological mapping of the shelf]. Metodicheskoe posobie po geologicheskoy s"emke masshtaba 1:50 000. Saint Petersburg: VSEGEI, 1992, 144 p.
   Mizens G.A. Verkhnepaleozoyskiy flish Zapadnogo Urala [The Upper Paleozoic flysch of the Western Urals]. Ekaterinburg: UrO RAN, 1997, 231 p.
   Piper D.J.W. Turbidite muds and silts on deep sea fans and abyssal plains // Sedimentation in submarine canyons, fans, and trenches, 1978, pp. 163-175.
   Romanovskiy S.I. Fizicheskaya sedimentologiya [Physical sedimentology].Leningrad: Nedra, 1988, 240 p.
   Shishlov S.B. Strukturno-geneticheskiy analiz osadochnykh formatsiy [Structural and genetic analysis of sedimentary formations]. Saint Petersburg: SPbGGI, 2010, 276 p.
   Sobolev D.B. Ostrakody i biostratigrafiya turneyskogo yarusa severa Urala [Ostracoda and biostratigraphy of the Tournaisian stage, northern Urals]. Ekaterinburg: UrO RAN, 2005, 113 p.
   Tarling D.H., Hrouda F., 1993. The magnetic anisotropy of rocks. Chapman & Hall, London, p. 217.
   Walker R.G. Deep-water sandstone facies and ancient submarine fans: models of exploration for stratigraphic traps // Bulletin of American Association of Petroleum Geologists. 62(6), 1978, pp. 932-966.
   Yudin V.V. Orogenez severa Urala i Pay-Khoya [Orogenesis of the northern Urals and Pai-Khoi]. Ekaterinburg: Nauka, 1994, 285 p.
   Zijderveld J.D. Demagnetization of rocks analysis of results. In Methods in Palaeomagnetism, Ed. Collinson D.W., Amsterdam, Elsevier, 1967, pp. 254-286.

Stratigraphy and lithology

Section editor – PhD in geology and mineralogy Kirichkova A.I.

Article # 6_2012	submitted on 10/26/2011 displayed on website on 01/25/2012
19 p.	Vevel Ya.A., Zhuravlev A.V., Popov V.V.
pdf	Deposits of the Devonian and Carboniferous boundary in the Kamenka River section (Pechora-Kozhvinsky megaswell, Timan-Pechora province)
	The article deals with the Devonian/Carboniferous boundary in the shallow-water sequence (the Kamenka River section as example) on the basis of cyclostratigraphy (maximum of regression) controlled by biostratigraphical data (conodonts and foraminifers). Facial control on the foraminifer and conodont associations is considered. Dependence of the magnetic successibility of the rocks on the sea-level changes is detected. The dependence is probably caused by variations of the terrigenous content in the carbonate rocks. Key words: Devonian/Carboniferous boundary, Timan-Pechora Province, conodonts, foraminifers, cyclostratigraphy, biostratigraphy, palaeomagnitology.
article citation	Vevel' Ya.A., Zhuravlev A.V., Popov V.V. Pogranichnye otlozheniya devonskoy i kamennougol'noy sistem v razreze na r. Kamenka (Pechoro-Kozhvinskiy megaval, Timano-Pechorskaya provintsiya) [Deposits of the Devonian and Carboniferous boundary in the Kamenka River section [Pechora-Kozhvinsky megaswell, Timan-Pechora province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2012, vol. 7, no. 1, available at: http://www.ngtp.ru/rub/2/6_2012.pdf

References

   Barskov I.S., Kononova L.I., Migdisova A.V. Konodonty nizhneturneyskikh otlozheniy podmoskovnogo basseyna [Conodonts of the Lower Tournaisian deposits of the Pre-Moscow Basin]. Paleontologicheskaya kharakteristika stratotipicheskikh i opornykh razrezov karbona Moskovskoy sineklizy. Editor V.V. Menner. Moscow: Moskow State University, 1984, pp. 3-33.
   Eremenko N.M., Vevel' Ya.A., Zhuravlev A.V. Interfatsial'naya korrelyatsiya morskikh ranneturneyskikh otlozheniy severa Urala i vostoka Timano-Pechorskoy plity – litostratigraficheskiy podkhod [Inter-facial correlation of the Lower Tournaisian marine deposits, northern Urals and eastern Timan-Pechora plate - lithostratigraphic approach]. Proceedings of the International Scientific Conference “Litologicheskie i geokhimicheskie osnovy prognoza neftegazonosnosti” [Lithological and geochemical basis of oil and gas potential forecast]. Saint Petersburg: VNIGRI, 2008, pp. 600-605.
   Fauna i biostratigrafiya pogranichnykh otlozheniy devona i karbona Berchogura (Mugodzhary) [Fauna and biostratigraphy of the Devonian and Carboniferous deposits, Berchogur (Mugodzhary)]. Moscow: Nauka, 1987, 121 p.
   Irwin M.L. General theory of epeiric clear water sedimentation. Bull. Amer. Assoc. Petrol. Geol. 49, 1965, pp. 445-459.
   Kulagina E.I., Gibshman N.B. Obshchaya zonal'naya shkala nizhnego karbona Rossii po foraminiferam [Total zonal scale of the Lower Carboniferous of Russia in view of foraminifera]. Byulleten’ MOIP. Otdelenie geologicheskoe, 2005, vol. 80, no. 2, pp. 60-67.
   Shishlov S.B. Strukturno-geneticheskiy analiz osadochnykh formatsiy [Structural and genetic analysis of sedimentary formations]. Saint Petersburg: Saint Petersburg State Mining University, 2010, 276 p.
   Sobolev D.B. Ostrakody i biostratigrafiya turneyskogo yarusa severa Urala [Ostracoda and biostratigraphy of the Tournaisian stage, north of the Urals]. Ekaterinburg: UrO RAN, 2005, 113 p.
   Vevel' Ya.A. Nakhodka foraminifer Tournayellina beata pseudobeata Reitlinger et Kulagina v nizhnem karbone Pechorskoy gryady [Discovery of foraminifera Tournayellina beata pseudobeata Reitlinger et Kulagina in the Lower Carboniferous Pechora ridge]. Neftegazovaya geologiya. Teoriya i praktika, 2009, vol. 4, no. 2, available at: http://www.ngtp.ru/rub/2/17_2009.pdf
   Zhuravlev A. Biogeography of the Early Carboniferous conodont genus Patrognathus. In: Wong, Th. E. (Ed.): Proceedings of the XVth International Congress on Carboniferous and Permian Stratigraphy. Utrecht, the Netherlands, 10–16 August 2003. Royal Netherlands Academy of Arts and Sciences, 2007, pp. 325-329.
   Zhuravlev A.V. Gistologiya i mikroskul'ptura pozdnepaleozoyskikh konodontovykh elementov [Histology and microsculpture the Late Paleozoic conodont elements]. Saint Petersburg: Geoservis Plyus, 2002, 94 p.
   Zhuravlev A.V. Konodontovaya zonal'nost' nizhnego karbona dlya melkovodnykh otlozheniy [Conodont zonation of the Lower Carboniferous for shallow-water deposits]. Proceedings of the All-Russia meeting “Zonal'nye podrazdeleniya karbona obshchey stratigraficheskoy shkaly Rossii” [Zonal subdivision of the Carboniferous common stratigraphic scale of Russia]. Ufa: Gilem, 2000, pp. 42-43.
   Zhuravlev A.V. Konodonty verkhnego devona – nizhnego karbona severo-vostoka Evropeyskoy Rossii [Conodonts of the Upper Devonian - Lower Carboniferous north-east of European Russia]. Saint Petersburg: VSEGEI, 2003, 85 p.
   Zhuravlev A.V., Kossovaya O.L., Sobolev D.B., Vevel Y.A. Biostratigraphy of the Lower Tournaisian (Lower Carboniferous) shallow-water deposits of the Eastern Part of the Timan-Pechora Province. Newsletter on Carboniferous Stratigraphy, 1999, no. 17, pp. 22-26.
   Zhuravlev A.V., Kossovaya O.L., Sobolev D.B., Vevel Y.A. Early Tournasian (Early Carconiferous) Shallow water Communities (Eastern part of the Timan-Pechora Province). Ichthyolith Issues special Publication 4, 1998, pp. 60-62.

Stratigraphy and lithology

Section editor – PhD in geology and mineralogy Kirichkova A.I.

Article # 45_2009	submitted on 12/10/2009 displayed on website on 12/14/2009
20 p.	Otmas (Eremenko) N.M., Zhuravlev A.V., Iosifidi A.G., Popov V.V., Khramov A.N., Vevel Ya.A., Nickolaev A.I.
pdf	Upper Devonian - Lower Carboniferous key sequence on the Talota river, Timan-Pechora province - results of lithologic, biostratigraphic and paleomagnetic researches
	The results of complex studying the Upper Devonian - Lower Carboniferous key sequence on the Talota river (north of the Vashutkino-Talota zone of overthrusts, Timan-Pechora province) are presented. The tectonic twinning of the sequence on the zone of overthrusts is proved by biostratigraphy data. The parautochthonous and allochthonous parts of the sequence are dated by foraminifera and conodonts. The first part contains Early Famenian-Late Visean deposits, the second part - Late Famenian-Serpukhovsk deposits. Breaks in sedimentations are established in the Lower Tournaisian and Lower Visean. The presence of an ancient secondary prefolded component of magnetization, confined to the definite parts of the sequence and caused by tectonic and hypergene processes, is established. The direction of this magnetization allowed reconstructing the prefolded (Middle Paleozoic) position of the allochthone and parautochthone. Key words: Upper Devonian, Lower Carboniferous, key sequence, Timan-Pechora province, stratigraphy, paleomagnetology, tectonics. Sequence description by Eremenko N.M. and Zhuravlev A.V. is provided in the Annex 1.
article citation	Eremenko N.M., Zhuravlev A.V., Iosifidi A.G., Popov V.V., Khramov A.N., Vevel Ya.A., Nickolaev A.I. Upper Devonian - Lower Carboniferous key sequence on the Talota river, Timan-Pechora province - results of lithologic, biostratigraphic and paleomagnetic researches // Neftegazovaya Geologiya. Teoriya I Praktika. - 2009. - V.4. - #4.- http://www.ngtp.ru/rub/2/45_2009.pdf Eremenko N.M., Zhuravlev A.V., Iosifidi A.G., Popov V.V., Khramov A.N., Vevel Ya.A., Nickolaev A.I. Upper Devonian - Lower Carboniferous key sequence on the Talota river, Timan-Pechora province - results of lithologic, biostratigraphic and paleomagnetic researches // Neftegazovaya Geologiya. Teoriya I Praktika. - 2009. - V.4. - #4.- http://www.ngtp.ru/rub/2/45prilojenie_2009.pdf

New methods and technologies

Section editor – PhD in geology and mineralogy Prischepa O.M.

Article # 016
39 p.	Popov V.V., Khramov A.N.
	New paleomagnetic method of borehole cores location determining
	Geological study of large areas is based solely on the results of drilling. The relevance of such studies is obvious, as fields are very often found in closed areas. In such cases, the problem of sequence correlation of insufficiently faunistically characterized wells is common. Paleomagnetic (magnetostratigraphic) method is often the only method to enable such a correlation in these cases. However, it is necessary to find out the orientation of samples in the well in order to use paleomagnetic method. As for borehole cores, the orientation "top-bottom" is usually only known. The method that uses the direction of low-temperature (low-coercitive) modern viscous component of magnetization is applied in paleo-magnetism to orient the core samples to the cardinal. However, the possibilities of this method are limited for several reasons. We propose to use a new method that allows us to calculate the direction of the ancient magnetization components in those cases where conventional methods do not provide a satisfactory result. The new method was tested on the samples from two sequences of the Lower Vendian - Early Cambrian and one sequence of Cenozoic southeastern coastal of the White Sea area. The similarity of the results for natural outcrops and wells proves its high efficiency. The application of the new method has allowed us to calculate paleomagnetic poles for the Upper Vendian and Cenozoic Baltic as well as the age of reversal for the Late Vendian rocks. The alternative paleomagnetic poles for Vendian Baltic have been calculated through the results obtained and the reconstruction of paleogeographical position of the plate during the studied period of time has been made. Key words: magnetostratigraphy, component composition of the rocks, Russian platform, correlation of geological sequences, core orientation.