排序方式： 共有18条查询结果，搜索用时 15 毫秒
1.
V.A. Kashirtsev T.M. Parfenova A.K. Golovko B.L. Nikitenko I.N. Zueva O.N. Chalaya 《Russian Geology and Geophysics》2018,59(10):1380-1388
The composition and distribution of phenanthrenes (polyaromatic compounds) have been studied in chloroform extracts from dispersed organic matter (OM) of clayey, siliceous, carbonate, and terrigenous rocks of different ages and facies and from some oils of the Siberian Platform. Phenanthrenes have been analyzed by gas chromatography-mass spectrometry. High contents of 1,7,8-trimethylphenanthrene and 1,1,7,8-tetramethyl-1,2,3,4-tetrahydrophenanthrene are present in the OM of Vendian and Cambrian carbonate-shale deposits and in ancient oils of the Nepa-Botuobiya and Anabar anteclises. The OM of Permian continental deposits and oils of the Vilyui syneclise is dominated by 1-methyl-7-isopropylphenanthrene (retene). A triangular diagram for identification of the types of original OM of rocks and classification of genetically related oils has been constructed based on the assessment of phenanthrene biomarker distribution. Putative pathways of the formation of phenanthrene biomarkers are discussed. 相似文献
2.
3.
4.
Yaping Zhou Ken C. Rutledge Analytical Service & Material Inc Hampton VA USA Thomas P. Charlock Atmospheric Sciences Division NASA Langley Research Center Hampton VA USA Norman G. Loeb Seiji Kato Hampton University Hampton VA USA 《大气科学进展》2001,(5)
l. IntroductionThe cIassicaI definition of bi--directional reflectance--distribution function (BRDF) is aderivative, distribution function, relatlng the irradiance incident from one given direction tolts contribution to the radiance renected in another direct1on (N1codemus et al., l977).f r (0,, rp,; 0,, rp, )= dL, (0,, P,; 0,, 9,; E, )/ dE, (0,, 9,) [sr-- 1 ], (l)where 0 (zenith angle) and 9 (azimuth angle) together indicate a direction, the subscr1pt i indi-cates quantities associated wi… 相似文献
5.
V. A. Kashirtsev A. N. Fomin N. P. Shevchenko K. V. Dolzhenko 《Doklady Earth Sciences》2016,469(2):815-818
According to the materials of geochemical study in the core of the ultradeep hole SV-27 of aromatic fractions of bitumoids of the Vilyui syneclise (East Siberia) by the method of chromatography–mass spectrometry, starting from the depth of >5000 m, four diastereomers of previously unknown hydrocarbons, which become predominant in the fraction at a depth of ～6500 m, were distinguished. Similar hydrocarbons were found in organic matter of Upper Paleozoic rocks of the Kharaulakh anticlinorium in the Verkhoyansk folded area. According to the intense molecular ion m/z 366 and the character of the basic fragmental ions (m/z 238, 309, and 323), the major structure of the compounds studied was determined as 17-desmethyl-23-methylmonoaromatic steroid C27. The absence of such steroids in oil of the Vilyui syneclise shows that deep micro-oils did not participate in the formation of oil fringes of gas condensate deposits of the region. 相似文献
6.
V.A. Kashirtsev A.E. Kontorovich V.L. Ivanov A.F. Safronov 《Russian Geology and Geophysics》2010,51(1):72-82
In the northern and northeastern Siberian Platform, within the Anabar and Olenek zones, there are a number of hypergene bitumen accumulations (fields) and natural bitumen seeps, whose total resources are estimated at >5 bln tons. Bitumen fields are confined to a wide stratigraphic range from Precambrian to Mesozoic. A detailed geochemical study was performed for bitumens of the largest Olenek field, whose naphthides are localized mainly in Permian sandstones of deltaic and coast-marine genesis. Chromato-mass spectrometric analysis showed that normal alkanes are drastically reduced in the saturated fraction of the bitumens and most of terpanes are a homologous series of 25-norhopanes, which evidences the intense bacterial degradation of hydrocarbon pools. Identification of bicyclic sesquiterpenes, tetracyclic onocerane, and other biomarkers testifies that the organic matter of source rocks was rich in higher-plants remains. The concentrations of steranes are low, whereas those of earlier unknown 8-14-secosteranes are rather high. The set of geochemical data on the Permian bitumens of the Olenek field, including the isotopic characteristics of carbon (δ13C of ?25.8 to ?31.3‰), suggests that the coeval oil source rocks on the passive continental margin (at the place of the present-day Verkhoyansk fold belt) were the main source of hydrocarbons for the field. Assessment of oil and gas resources, including giant bitumen pools, and their exploration in the framework of “The fundamentals of Russian state policy in Arctic up to 2020” have become a top-priority problem. Petroleum refining products might be economically feasible raw materials in the eastern Russian Arctic sector to be supplied via the Northern Sea Route. 相似文献
7.
热液金刚石压腔在地质流体研究中的应用 总被引：6，自引：1，他引：6
热液金刚石压腔(HDAC)是专为模拟地壳温压条件下的地质作用而设计的，它尤其适用于观测水或其它流体与地质物质之间的相互作用。HDAC可时-190～1200℃，0～10GPa的热液体系进行实验，并可在实验的温压条件下．用各种先进的光学方法分析样品，更可以把实验的全程录像存档。充满流体的HDAC本身就可当做是一个人工合成的流体包裹体。因此它可以用来研究流体的状态方程和相关系。它又可时其它流体包裹体样品施加外压力，因此在热分析的过程中可免除包裹体的膨胀或爆破的困境。HDAC可应用到颇为宽广的温压范围，它已被广泛地用来观测各种化学体系的临界现象，包括在地质方面特别有用的含水硅酸盐体系。HDAC也可与同步辐射X光源相结合，而取得各种金属或稀土元素水溶液的x射线吸收精细结构(X-ray absorption fine structure；XAFS)光谱，因而时在热液里的金属或稀土元素络合物的组分和结构提供了最基本的资料。然而，X光的强度在透过金刚石时，因绕射和吸收而大大地减弱，因此应用一般的HDAC来获取那些吸收边在10keV以下的元素的XAFS光谱颇为困难。目前已有两种改良式的HDAC解除了这方面的困难，而时在元素周期表上的第一排过渡性金属元素和稀土元素的水溶液，提供清晰的XAFS光谱。这些资料可用来研究金属或稀土元素络合物在地质热液里的特性，及其在元素迁移和成矿作用方面的效应。而这些元素在地质应用方面特别重要。 相似文献
8.
Petroleum potential of Baikal deposits 总被引：1，自引：0，他引：1
A.E. Kontorovich V.A. Kashirtsev V.I. Moskvin L.M. Burshtein T.I. Zemskaya E.A. Kostyreva G.V. Kalmychkov O.M. Khlystov 《Russian Geology and Geophysics》2007,48(12):1046-1053
We analyzed oils, gases, and bitumens of bottom sediments from natural shows on the southeastern shore of Lake Baikal, in the mouth of the Stvolovaya River near Capes Tolstyi and Gorevoi Utes. Based on a set of geological data, we have established that: (1) the lake oils underwent biodegradation to a variable degree: “Fresh” nondegraded paraffin oil floats up near Cape Gorevoi Utes; in the mouth of the Stvolovaya River and near Cape Tolstyi, aromatic-naphthene oil lacks n-alkanes, monomethyl alkanes, and acyclic isoprenoids; (2) Cenozoic oil originated from the organic matter of fresh-water basins with significant amounts of higher land plant remains, including angiosperm plants (oleanane), which suggests the lake or delta genesis of oil source formations of Cretaceous and younger ages. Judging from the carbon isotope composition (average δ13C = −43.84‰), methane from the bottom sediments near Cape Gorevoi Utes is catagenetic. The initial in-place resources in the Baikal sedimentary basins are estimated by the volumetric-statistical method at 500 mln tons of equivalent hydrocarbons. 相似文献
9.
10.
V.A. Kashirtsev Yu.K. Sovetov E.A. Kostyreva V.M. Melenevskii A.Yu. Kuchkina 《Russian Geology and Geophysics》2009,50(6):541-545
We studied the organochemical distribution of saturated hydrocarbons in organic matter of mudstones of the Vendian Marna Formation in the Sayan-adjacent Biryusa area. The formation is composed of glacial, glacio-alluvial, and lacustrine deposits.In the fraction of saturated hydrocarbons in chloroform extracts (bitumoids), a homologous series of earlier unknown 2,7-dimethyl alkanes has been identified, with molecules having the even number of carbon atoms prevailing. The possible sources of such abundant biomarkers are considered. 相似文献