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1.
辉钼矿的多型及其成因初探 总被引：4，自引：0，他引：4
自然界已发现辉钼矿的2H、3R和2H+3R多型。笔者对我国9个不同类型矿床中23个辉钼矿的晶体结构、混入组分、形成条件进行了分析,并据此探讨了辉钼矿多型的成因。 相似文献
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3.
Frank Stefan Tautz Volker Heine Martin T. Dove Xiaojie Chen 《Physics and Chemistry of Minerals》1991,18(5):326-336
A molecular dynamics simulation of quartz at different temperatures both in the a and in the phase has been conducted. The - phase transition could be observed. A phonon analysis of the -phase confirms and rounds out in a quantitative way the origin of the incommensurate (ic) modulated phase. In particular it traces the optic soft mode at becoming (to a good approximation) a so-called rigid unit mode (RUM) at q0, and elucidates its coupling to the transverse acoustic mode which precipitates the incommensurate transition. This success underpins and illuminates the concept of RUMs and their role in structural phase transitions. 相似文献
4.
《Sedimentology》1988,35(3):531-546
Book review in this article
Antarctic Cenozoic History from the MSSTS-1 Drill Hole McMurdo Sound, ed. by P. J. Barrett
Experimental Fluvial Geomorphology, by Stanley A. Schumm, M. Paul Mosley and William E. Weaver
Diagenetic Bedding: A Model for Marl-Limestone Alterations, by W. Ricken
Cretaceous and Cenozoic Sedimentary Basins of the West Coast Region, South Island, New Zealand. New Zealand Geological Survey Basin Studies1, by S. Nathan, H. J. Anderson, R. A. Cook, R. H. Herzer, R. H. Hoskins, J. I. Raine and D. Smale
The Marine Environment of the U.S. Atlantic Continental Slope and Rise, ed. by J. D. Milliman & W. R. Wright
Shelf Sands and Sandstones, ed. by R. John Knight and J. Ross McLean.
Foreland Basins, ed. by P. A. Allen and P. Homewood.
Proterozoic Geology: Selected Papers from an International Proterozoic Symposium, ed. L. G. Medaris, Jr., C. W. Byers, D. M. Mickelson & W. C. Shanks
Géologie de la Préhistoire, Méthodes, Techniques, Applications, ed. by J. C. Miskovsky
Aeolian Geomorphology (Proceedings of the 17th Annual Binghamton Geomorphology Symposium, September 1986.), ed. by William G. Nickling
Aeolian Dust and Dust Deposits, by K. Pye
Biological Markers in the Sedimentary Record, ed. by R. B. Johns
Stable Isotope Geochemistry, by J. Hoefs
Reef Diagenesis, ed. by J. H. Schroeder and B. H. Purser 相似文献
Antarctic Cenozoic History from the MSSTS-1 Drill Hole McMurdo Sound, ed. by P. J. Barrett
Experimental Fluvial Geomorphology, by Stanley A. Schumm, M. Paul Mosley and William E. Weaver
Diagenetic Bedding: A Model for Marl-Limestone Alterations, by W. Ricken
Cretaceous and Cenozoic Sedimentary Basins of the West Coast Region, South Island, New Zealand. New Zealand Geological Survey Basin Studies1, by S. Nathan, H. J. Anderson, R. A. Cook, R. H. Herzer, R. H. Hoskins, J. I. Raine and D. Smale
The Marine Environment of the U.S. Atlantic Continental Slope and Rise, ed. by J. D. Milliman & W. R. Wright
Shelf Sands and Sandstones, ed. by R. John Knight and J. Ross McLean.
Foreland Basins, ed. by P. A. Allen and P. Homewood.
Proterozoic Geology: Selected Papers from an International Proterozoic Symposium, ed. L. G. Medaris, Jr., C. W. Byers, D. M. Mickelson & W. C. Shanks
Géologie de la Préhistoire, Méthodes, Techniques, Applications, ed. by J. C. Miskovsky
Aeolian Geomorphology (Proceedings of the 17th Annual Binghamton Geomorphology Symposium, September 1986.), ed. by William G. Nickling
Aeolian Dust and Dust Deposits, by K. Pye
Biological Markers in the Sedimentary Record, ed. by R. B. Johns
Stable Isotope Geochemistry, by J. Hoefs
Reef Diagenesis, ed. by J. H. Schroeder and B. H. Purser 相似文献
5.
6.
《Sedimentology》1975,22(4):637-642
Modern and Ancient Geosynclinal Sedimentation. Edited by R. H. Dott, Jr and Robert H. Shaver.
Evolving Concepts in Sedimentology. Edited by R. N. Ginsburg.
The Mediterranean Sea: A natural sedimentation laboratory. Edited by D. J. Stanley Dowden, Hutchinson and Ross, Stroudsburg.
Die Bildung von Sedimenten und Sedimentgesteinen (Principles of sediment- and sedimentary rock-forming processes). By W. von Engelhardt. 相似文献
Evolving Concepts in Sedimentology. Edited by R. N. Ginsburg.
The Mediterranean Sea: A natural sedimentation laboratory. Edited by D. J. Stanley Dowden, Hutchinson and Ross, Stroudsburg.
Die Bildung von Sedimenten und Sedimentgesteinen (Principles of sediment- and sedimentary rock-forming processes). By W. von Engelhardt. 相似文献
7.
C.M. Ekweozor 《Organic Geochemistry》1986,10(4-6)
The major steranes of the non-asphaltene fraction of Nigerian tar sand bitumen (maltene) are the c27-c29 diasteranes [13β(H),17α(H); 20R + S] and C28-C29 regular steranes [14β (H),17β (H); 20S]. The reducing metal reaction products of the corresponding asphaltenes (maltene-I) contain mainly C27-C29 regular steranes with the 14β(H),17β(H); 20R + S and 14α(H),17α(H); 20R + S configurations as well as the corresponding diasteranes having the 13β(H),17α(H); 20R + S configuration. These sterane distributions suggest that maltene-I corresponds to an unaltered oil whilst the maltene is equivalent to the product of severe biodegradation of maltene-I. This is consistent with maltene-I being the remnant of “original oil” trapped within the asphaltene matrix and protected from the effect of in-reservior biodégradation.Degradation of Nigerian asphaltenes by refluxing with ferric chloride-acetic anhydride or methanolic potassium hydroxide also releases soluble reaction products having the characteristics of unaltered oil such as the presence of n-alkanes having an unbiased distribution. These methods appear to be milder and more suitable than reducing metal reactions for releasing hydrocarbons occluded by asphaltenes. 相似文献
8.
《Geology Today》1985,1(3):94-95
Book reviewed in this articles
Geology of the Nonmetallics by Peter W. Harben & Robert L. Bates.
St. Kilda: an illustrated account of the geology by R.R. Harding, R.J. Merriman & P.H.A. Nancarrow.
British Fossils by John Thackray. 相似文献
Geology of the Nonmetallics by Peter W. Harben & Robert L. Bates.
St. Kilda: an illustrated account of the geology by R.R. Harding, R.J. Merriman & P.H.A. Nancarrow.
British Fossils by John Thackray. 相似文献
9.
《Sedimentology》1985,32(1):161-164
Book review in this article
Iron-Formation: Facts and Problems, by A. F. Trendall and R. C. Morris.
Palaeomagnetism—Principles and Applications in Geology, Geophysics and Archaeology, by D. H. Tarling.
Dolomites of the Monterey Formation and other Organic-rich Units, ed. by R. E. Garrison, M. Kastner and D. H. Zenger.
Lake Sedimentology, by L. Håkanson and M. Jansson. 相似文献
Iron-Formation: Facts and Problems, by A. F. Trendall and R. C. Morris.
Palaeomagnetism—Principles and Applications in Geology, Geophysics and Archaeology, by D. H. Tarling.
Dolomites of the Monterey Formation and other Organic-rich Units, ed. by R. E. Garrison, M. Kastner and D. H. Zenger.
Lake Sedimentology, by L. Håkanson and M. Jansson. 相似文献
10.
《Sedimentology》1990,37(1):165-186
Book reviews in this article:
Sedimentary Cover—North American Craton: US
The Geology of North America, Vol. D-2, ed. by L. L. Sloss
Thermal History of Sedimentary Basins: Methods and Case Histories, ed. by N. D. Naeser and T. H. McCulloh
Origin and Migration of Subsurface Sedimentary Brines, SEPM Short Course No. 21, by J. S. Hanor
Evaporites and Hydrocarbons, ed. by B. C. Schreiber.
Phanerozoic Ironstones, ed. by T. P. Young and W. E. G. Taylor.
Green Marine Clays, ed. by G. S. Odin
Siliceous Sedimentary Rock-Hosted Ores and Petroleum, ed. by J. R. Hein.
Neodymium Isotope Geochemistry, by D. J. DePaolo
The Beginning of the Age of Dinosaurs. Faunal Change across the Triassic-Jurassic Boundary, ed. by K. Padian.
Basics of Physical Stratigraphy and Sedimentology, by W. J. Fritz and J. N. Moore.
Techniques in Sedimentology, ed. by Maurice Tucker
The Physics of Sediment Transport by Wind and Water, a Collection of Hallmark Papers by R. A. Bagnold, ed. by C. R. Thorne, R. C. MacArthur and J. B. Bradley
Siliceous Deposits of the Tethys and Pacific Regions, ed. by J. R. Hein and J. Obradovic
Diagenesis I and Diagenesis II, ed. by G. V. Chilingarian and K. H. Wolf.
Continental Shelves, ed. by H. Postma and J. J. Zijlstra.
Modern Planktonic Foraminifera, by Ch. Hermleben, M. Spindler and O. R. Anderson
Sedimente und Sedimentgesteine (4th edn), ed. by H. Füchtbauer 相似文献
Sedimentary Cover—North American Craton: US
The Geology of North America, Vol. D-2, ed. by L. L. Sloss
Thermal History of Sedimentary Basins: Methods and Case Histories, ed. by N. D. Naeser and T. H. McCulloh
Origin and Migration of Subsurface Sedimentary Brines, SEPM Short Course No. 21, by J. S. Hanor
Evaporites and Hydrocarbons, ed. by B. C. Schreiber.
Phanerozoic Ironstones, ed. by T. P. Young and W. E. G. Taylor.
Green Marine Clays, ed. by G. S. Odin
Siliceous Sedimentary Rock-Hosted Ores and Petroleum, ed. by J. R. Hein.
Neodymium Isotope Geochemistry, by D. J. DePaolo
The Beginning of the Age of Dinosaurs. Faunal Change across the Triassic-Jurassic Boundary, ed. by K. Padian.
Basics of Physical Stratigraphy and Sedimentology, by W. J. Fritz and J. N. Moore.
Techniques in Sedimentology, ed. by Maurice Tucker
The Physics of Sediment Transport by Wind and Water, a Collection of Hallmark Papers by R. A. Bagnold, ed. by C. R. Thorne, R. C. MacArthur and J. B. Bradley
Siliceous Deposits of the Tethys and Pacific Regions, ed. by J. R. Hein and J. Obradovic
Diagenesis I and Diagenesis II, ed. by G. V. Chilingarian and K. H. Wolf.
Continental Shelves, ed. by H. Postma and J. J. Zijlstra.
Modern Planktonic Foraminifera, by Ch. Hermleben, M. Spindler and O. R. Anderson
Sedimente und Sedimentgesteine (4th edn), ed. by H. Füchtbauer 相似文献
11.
12.
This paper describes the occurrence and significance of hydrocarbons present in two bituminous marl layers and one distinct gypsum layer from a Messinian sedimentary basin, where hypersaline conditions prevailed. Several new compounds were detected and tentatively identified: of these 20R and 20S 4α, 24-dimethyl-5α(H),14β(H),17β(H) and 20R and 20S 4β,24-dimethyI-5α(H),14β(H),17β(H) cholestanes; 4-methylspirosterenes; 4,4-dimethyl-5α(H),14β(H),17β(H) pregnanes and homopregnanes are discussed in this paper. Several of these compounds might be considered as biological markers for a (hyper)saline environment. The short side chain 4-desmethylsteranes, 5α(H),14β(H),17β(H), 5α(H),14β(H),17α(H) and 5α(H),14α(H), 17α(H) pregnanes and homopregnanes, are the most abundant compounds in the extract from the gypsum sample. It is suggested that in this case these compounds do not reflect the stage of diagenesis but are related to certain organisms exclusively occurring in hypersaline environments. In addition the very low pristane/phytane ratio, often considered as an indicator for anoxicity, could also be interpreted as a useful indicator for hypersalinity. 相似文献
13.
《Sedimentology》1990,37(5):953-964
Book review in this article
Phosphate Deposits of the World; Volume 2, Phosphate Rock Resources, ed. by A. J. G. Notholt, R.P. Sheldon and D.F. Davidson
Sedimentology and Petroleum Geology, by Knut Bjørlykke
Nonmetalliferous Stratabound Ore Fields, ed. by M. K. de Brodtkorb
Clay Sedimentology, by H. Chamley
Paleoclimatology and Paleometeorology: Modern and Past Patterns of Global Atmospheric Transport, ed. by M. Leinen and M. Sarnthein
Geology of North America—An Overview, ed. by A. W. Bally and A. R. Palmer
Nearshore Sediment Transport, ed. by R. J. Seymour
Sedimentological Consequences of Convulsive Geological Events, ed. by H. E. Clifton
Sea-Level Changes: An Integrated Approach, ed. by C. K. Wilgus, B. S. Hastings, C. G. St C. Kendall, H. W. Posamentier, C. Ross and C. Van Wagoner 相似文献
Phosphate Deposits of the World; Volume 2, Phosphate Rock Resources, ed. by A. J. G. Notholt, R.P. Sheldon and D.F. Davidson
Sedimentology and Petroleum Geology, by Knut Bjørlykke
Nonmetalliferous Stratabound Ore Fields, ed. by M. K. de Brodtkorb
Clay Sedimentology, by H. Chamley
Paleoclimatology and Paleometeorology: Modern and Past Patterns of Global Atmospheric Transport, ed. by M. Leinen and M. Sarnthein
Geology of North America—An Overview, ed. by A. W. Bally and A. R. Palmer
Nearshore Sediment Transport, ed. by R. J. Seymour
Sedimentological Consequences of Convulsive Geological Events, ed. by H. E. Clifton
Sea-Level Changes: An Integrated Approach, ed. by C. K. Wilgus, B. S. Hastings, C. G. St C. Kendall, H. W. Posamentier, C. Ross and C. Van Wagoner 相似文献
14.
采用改进的DRS-I型高压直剪仪进行了砂砾与不同形貌尺度的粗糙钢板结构面接触剪切试验,获得不同压力、形貌尺度条件下的剪切试验结果,分析了中、高压下的不同结构面形貌尺度与砂土颗粒平均粒径比值R（ ,相对形貌尺度）对接触面剪切特性的影响。结构面相对形貌尺度R直接影响接触面剪切过程中的力学与体变特性,中压与高压下分别呈现不同的影响规律且存在各自的峰值相对形貌尺度 与稳定相对形貌尺度 。达到峰值相对形貌尺度之前,R的增大使得接触面剪切耗能随之增加,而剪切体变在中压、高压下分别随之增加和降低;稳定相对形貌尺度之后,接触面剪切耗能与剪切体变达到稳定状态,随R的增大呈微小变化,变化幅值较小。上述规律与接触面附近一定区域的颗粒变位及破碎等机制密切相关,获得成果将为研究不同法向压力下受形貌尺度影响的结构面相对粗糙度问题提供新思路,对于研究不同法向压力下粗粒土与粗糙结构面的接触面力学与变形机制有一定借鉴意义。 相似文献
15.
This paper is based on a survey supported by the IGU Commission on Geography of Famine and Vulnerable Food Systems. The support received is especially acknowledged. 相似文献
16.
《Sedimentology》1985,32(3):465-470
Book review in this article
Bibliography of Alluvial-fan Deposits, by Tor H. Nilsen and Thomas E. Moore
Coastal Oceanography, ed. by H. G. Gade, A. Edwards and H. Svendsen.
Siliciclastic Shelf Sediments, ed. by R. W. Tillman and C. T. Siemers
Glacial Lake Agassiz, edited by J. T. Teller and Lee Clayton 相似文献
Bibliography of Alluvial-fan Deposits, by Tor H. Nilsen and Thomas E. Moore
Coastal Oceanography, ed. by H. G. Gade, A. Edwards and H. Svendsen.
Siliciclastic Shelf Sediments, ed. by R. W. Tillman and C. T. Siemers
Glacial Lake Agassiz, edited by J. T. Teller and Lee Clayton 相似文献
17.
《Sedimentology》1989,36(1):163-175
Books review in this article:
Tide-influenced Sedimentary Environments and Facies, ed. by P. L. de Boer, A. van Gelder and S. D. Nio
Tides, Surges and Mean Sea-Level, A Handbook for Engineers and Scientists, by D. T. Pugh
Reservoir Sedimentology, ed. by R. W. Tillman and K. J. Weber
Sedimentation and Tectonics of the Welsh Basin, ed. by W. R. Fitches and N. H. Woodcock
Sediment Transport in Gravel Bed Rivers, ed. by C. R. Thorne, J. C. Bathurst & R. D. Hey
Periglacial Processes and Landforms in Britain and Ireland, ed. by John Broadman
Biolaminated Deposits, by G. Gerdes & W. E. Krumbein
Dinosaurs Past and Present, ed. by S. J. Czerkas and E. C. Olson.
Abrupt Climatic Change, Evidence and Implications, ed. by W. H. Berger and L. D. Labeyrie
The Morphodynamics of the Wadden Sea, by J. Ehlers, A. A. Balkema
Paleokarst, ed. by N. P. James and P. W. Choquette
Sea-level Fluctuation and Coastal Evolution, ed. by D. Nummedal, O. H. Pilkey and J. D. Howard 相似文献
Tide-influenced Sedimentary Environments and Facies, ed. by P. L. de Boer, A. van Gelder and S. D. Nio
Tides, Surges and Mean Sea-Level, A Handbook for Engineers and Scientists, by D. T. Pugh
Reservoir Sedimentology, ed. by R. W. Tillman and K. J. Weber
Sedimentation and Tectonics of the Welsh Basin, ed. by W. R. Fitches and N. H. Woodcock
Sediment Transport in Gravel Bed Rivers, ed. by C. R. Thorne, J. C. Bathurst & R. D. Hey
Periglacial Processes and Landforms in Britain and Ireland, ed. by John Broadman
Biolaminated Deposits, by G. Gerdes & W. E. Krumbein
Dinosaurs Past and Present, ed. by S. J. Czerkas and E. C. Olson.
Abrupt Climatic Change, Evidence and Implications, ed. by W. H. Berger and L. D. Labeyrie
The Morphodynamics of the Wadden Sea, by J. Ehlers, A. A. Balkema
Paleokarst, ed. by N. P. James and P. W. Choquette
Sea-level Fluctuation and Coastal Evolution, ed. by D. Nummedal, O. H. Pilkey and J. D. Howard 相似文献
18.
《Sedimentology》1983,30(2):305-306
Marine Geology, by James Kennett
Stach's Textbook of Coal Petrology, by E. Stach, M. Th. Mackowsky, M. Teichmuller, G. H. Taylor, D. Chandra & R. Teichmuller.
Applied Geomorphology, ed. by R. G. Craig and J. L. Craft. 相似文献
Stach's Textbook of Coal Petrology, by E. Stach, M. Th. Mackowsky, M. Teichmuller, G. H. Taylor, D. Chandra & R. Teichmuller.
Applied Geomorphology, ed. by R. G. Craig and J. L. Craft. 相似文献
19.
Dozent Dr. Siegfried Haussühl Dozent Dr. German Müller 《Contributions to Mineralogy and Petrology》1963,9(1):28-39
Summary Argillaceous sediments of jurassic and lower cretaceous age in NW-Germany contain in several localities authigenous ZnS-polytypes. The crystals with a maximum height of 2 mm exhibit hexagonal-pyramidal and trigonal-pyramidal habit.With X-ray rotation and precession technique the following polytypes could be identified: Sphalerite (3 R = 3 C) 211, 411, 6H 9R, 12R, 15R and 21R.The 9 R-, 12 R- and 21 R-polytypes have not until now been described elsewhere.The structures of the new polytypes were determined as 9R=(21), 12R=(13) and 21R=(3112).Oriented intergrowths of R- and H-polytypes were frequently observed. From the intergrowth-phenomena arguments for the environmental conditions of formation can be deducted.[/p] 相似文献
20.
《Sedimentology》1983,30(6):895-899
Gravel-Bed Rivers, Fluvial Processes, Engineering and Management, ed. by R.D. Hey, J. C. Bathurst and C. R. Thorne
International Clay Conference 1981, ed. by H. Van Olphen and F. Veniale
Geology of Offshore Ireland and West Britain, by D. Naylor and P. M. Shannon.
Facies Interpretation and the Stratigraphic Record, by A. Hallam. W. H. Freeman
Diagenesis in Sediments and Sedimentary Rocks, ed. by G . Larsen and C. V. Chilingar
Basic Well Log Analysis for Geologists, by George Asquith with Charles Gibson. 相似文献
International Clay Conference 1981, ed. by H. Van Olphen and F. Veniale
Geology of Offshore Ireland and West Britain, by D. Naylor and P. M. Shannon.
Facies Interpretation and the Stratigraphic Record, by A. Hallam. W. H. Freeman
Diagenesis in Sediments and Sedimentary Rocks, ed. by G . Larsen and C. V. Chilingar
Basic Well Log Analysis for Geologists, by George Asquith with Charles Gibson. 相似文献