Volume 27, 3, 2008 |
|
V.I. Isaev, R.Yu. Gulenok, O.S. Isaeva, G.A. Lobova.
Density modeling of the basement of the sedimentary section, and
prediction of zones of oil and gas accumulation (as exemplified by
South Sakhalin and West Siberia) 3 Ye.V. Pospeeva. Application of medium-scale magnetotelluric sounding for identification of deep criteria of areas promising for kimberlite 18 Yu.A. Kugaenko, V.A. Saltykov, V.I. Sinitsyn, A.A. Shishkin. Seismic noise investigations on Shikotan Island by long- term observations: first results 33 I.B. Tsoy, N.K. Vagina. Paleontological chacteristics of the Upper Cenozoic deposits and paleoenvironmental changes in the Peter the Great Bay area (the Sea of Japan) 44 L.P. Eikhvald. Devonian conodonts of Priamurye 62 Yu.D. Markov, F.R. Likht , A.N. Derkachev, I.V. Utkin, A.I. Botsul, V.S. Pushkar, Ye.D. Ivanova, T.A. Evstigneeva, G.A. Yevseev. Sediments of the buried paleovalleys of the coastal part of the shelf of East Korean Bay as indicators of the Holocene paleogeographical environment 74 V.B. Bazarova, L.M. Mokhova, L.A. Orlova, P.S. Belyanin. Dynamics of the Khanka Lake level change in the Late Holocene 93 Z.G. Mirzekhanova, D.M. Fetisov. Possibilities of the use of recreation potential of relief (as exemplified by the Jewish Autonomous Region 99 Memorial dates On the 100th Birthday of Alexander Stepanovich Khomentovsky 105 V.I. Isaev, R.Yu. Gulenok, O.S. Isaeva, G.A. Lobova Density modeling of the basement of the sedimentary section, and prediction of zones of oil and gas accumulation (as exemplified by South Sakhalin and West Siberia) The zones of deconsolidation and consolidation of the lower levels of the sedimentary cover and basement are regarded as an essential prediction indicator of zones of oil and gas accumulation. The described zones are mapped by methods of geodensity simulation (in the gravitational field) in the MZ-PZ basement and Cretaceous sediments of southern Sakhalin, and in the pre-Jurassic basement and plate complex of the central part of West Siberia. The most promising areas, gravitating toward the Central Sakhalin fault, Krasnoleninsk dome and Visim megaswell of the West Siberian plate were distinguished. It is noted that up-to-date results of preliminary drilling indicate the syngenetic character of zones of deconsolidation and hydrocarbon deposits. The density model is sufficiently universal for oil geological exploration by agencies of various regional geological-tectonic affiliation. Ye.V. Pospeeva Application of medium-scale magnetotelluric sounding for identification of deep criteria of areas promising for kimberlite Medium-scale magnetotelluric soundings performed in the territory of the Malobotuobinskiy (Yakutia diamond province) and Zimneberezhny (Arkhangelsk diamond province) kimberlite districts revealed basic specific features of the geoelectrical section of the studied regions. They are genetically related to processes of kimberlite formation. All the known kimberlite pipes of both regions are located in the contours of the revealed conducting geoelectrical heterogeneities. Such heterogeneities may become one of the deep criteria for recognition of kimberlite-potential areas. Yu.A. Kugaenko, V.A. Saltykov, V.I. Sinitsyn, A.A. Shishkin Seismic noise investigations on Shikotan Island by long-term observations: first results In 2003-2004 long-term seismic noise observations were launched on Shikotan Island (Lesser Kuril Range). Seismic noise registration was based on the dormant regional seismic station “Shikotan”. Geological and geophysical data on the registration area are cited. Information about equipment and its technical specifications is given. Examples of local earthquake precursors are demonstrated for the Shikotan Island area from January, 2005 to March, 2007. I.B. Tsoy, N.K. Vagina Paleontological chacteristics of the Upper Cenozoic deposits and paleoenvironmental changes in the Peter the Great Bay area (the Sea of Japan) Paleontological data of the Cenozoic sedimentary cover of the Peter the Great Bay continental slope (the Sea of Japan) are presented. Paleontological sediments there are represented by diverse and abundant siliceous microfossils (diatoms, silicoflagellates, radiolarians) and spore and pollen assemblages. The use of zonal high-resolution biostratigraphic charts allowed a more accurate specification of the sediments age and reconstruction of the paleoenvironment of this area. The history of investigation of the Sea of Japan area, which was a test area for marine geological investigations, is described. L.P. Eikhvald Devonian conodonts of Priamurye Conodont characteristics of the Bolsheneverskaya and Imachinskaya suites (Devonian) of Priamurye are given. The most widely occurring conodont kinds are monographically described. Yu.D. Markov, F.R. Likht , A.N. Derkachev, I.V. Utkin, A.I. Botsul, V.S. Pushkar, Ye.D. Ivanova, T.A. Evstigneeva, G.A. Yevseev Sediments of the buried paleovalleys of the coastal part of the shelf of East Korean Bay as indicators of the Holocene paleogeographical environment Within the buried paleovalleys of the coastal part of the shelf of East Korean Bay, the lithological composition and the stratigraphy of the finely dispersed deposits have been studied. The typal natural environment of recent nepheloidal near-continental sedimentogenesis corresponding to the near-mouth type has been established. It has been ascertained that two other nepheloidal environments (of alleviation apron and the transit linear type) are not characteristic for Recent time. Their formation was related to the paleoclimatic changes during the Holocene. V.B. Bazarova, L.M. Mokhova, L.A. Orlova, P.S. Belyanin Dynamics of the Khanka Lake (Primorye) level change in the Late Holocene New data on the dynamic and coastal formation of the Khanka Lake in the Late Holocene are discussed in the paper. In the Middle Holocene (SA II) the climate was warm, and the Khanka Lake was in the transgressive phase. Its level was 0.8-1m higher than the modern one. In the SA III when the climatic conditions were cooler, regression of the lake began to continue up to date. The spore-and-pollen samples of different genesis taken near the studied section were examined for the more reliable interpretation of paleoclimatic events. Z.G. Mirzekhanova, D.M. Fetisov Possibilities of the use of recreation potential of relief (as exemplified by the Jewish Autonomous Region) The estimation of geomorphological recreation resources of the Jewish Autonomous Region is given, technological and physiological properties considered. Low-mountain territories are determined as most attractive for active rest in the region. The most promising for recreational development geomorphological resources, which cover 40% of the Region’s territory, are distinguished, considering transport accessibility and infrastructure of hospitality. |