Геология России: Recent submissions

Now showing items 461-480 of 43490

TROPHONOPSIS BUCQUOY, DAUTZENBERG AND DOLLFUS, 1882 (GASTROPODA, MURICIDAE) FROM THE PLIO-PLEISTOCENE DEPOSITS IN JAPAN

Amano K. (2006)

The Plio-Pleistocene Trophonopsis in northern Japan consists of seven species: T. kamchatkana (Dall), T. uyemurai (Yokoyama), T. sasae Sawada, T. vermeiji Amano, sp. nov., T. aff. densicostata Golikov in Golikov and Scarlato, ...
PLIOCENE ARCTIC TEMPERATURE CONSTRAINTS FROM THE GROWTH RINGS AND ISOTOPIC COMPOSITION OF FOSSIL LARCH

Ballantyne A.P.; Baker P.A.; Rybczynski N.; Harington C.R.; White D. (2006)

Instrumental records reveal that the current rate of Arctic warming greatly exceeds mean global warming. However, Arctic temperatures during the Pliocene were considerably warmer than present, making it an excellent time ...
GEOLOGY AND GEOCHEMISTRY OF THE BULONG QUARTZ-BARITE VEIN-TYPE GOLD DEPOSIT IN THE XINJIANG UYGUR AUTONOMOUS REGION, CHINA

Yang F.; Mao J.; Wang Y.; Bierlein F.P. (2006)

The Bulong gold deposit, located in Akqi County, Southwest Tianshan, China, occurs in Upper Devonian fine-grained clastic rocks. Gold mineralization is controlled by a series of gently tilted fractured zones. Four ore-bearing ...
THE VIBRATIONAL FREQUENCIES OF FORSTERITE MG2SIO4: AN ALL-ELECTRON AB INITIO STUDY WITH THE CRYSTAL CODE

Noel Y.; D'Arco Ph.; Catti M.; Dovesi R. (2006)

The vibrational spectrum of Mg2SiO4 olivine was calculated at the Γ point by using the periodic ab initio CRYSTAL program. An all electron localized Gaussian-type basis set and the B3LYP Hamiltonian were employed. The full ...
CONSTRAINTS ON THE GENESIS OF FERRIAN ILLITE AND ALUMINUM-RICH GLAUCONITE: POTENTIAL IMPACT ON SEDIMENTOLOGY AND ISOTOPIC STUDIES

Longuépée H.; Cousineau P.A. (2006)

The term glauconite covers a series of iron-rich minerals that form in the upper layer of sediments of the sea bottom in locations where sediment input is low. Because of its potassium content and the process of its ...
RAPID SEA-LEVEL RISE IN THE NORTH ATLANTIC OCEAN SINCE THE FIRST HALF OF THE NINETEENTH CENTURY

Gehrels W.R.; Marshall W.A.; Gehrels M.J.; Larsen G.; Eiríksson J.; Kirby J.R.; Heinemeier J.; Shimmield T. (2006)

A high-resolution late-Holocene sea-level record is produced from salt-marsh deposits at Vioarhólmi in Snæfellsnes, western Iceland. The stratigraphy of Vioarhólmi saltmarsh is documented using detailed descriptions of ten ...
THE CONSTITUTION AND STRUCTURE OF THE LUNAR INTERIOR

Wieczorek M.A.; Jolliff B.L.; Khan A.; Pritchard M.E.; Weiss B.P.; Williams J.G.; Hood L.L.; Righter K.; Neal C.R.; Shearer C.K.; McCallum I.S.; Tompkins S.; Hawke B.R.; Peterson C.; Gillis J.J.; Bussey B. (2006)

The current state of understanding of the lunar interior is the sum of nearly four decades of work and a range of exploration programs spanning that same time period. Missions of the 1960s including the Rangers, Surveyors, ...
CONTRASTS IN GEM CORUNDUM CHARACTERISTICS, EASTERN AUSTRALIAN BASALTIC FIELDS: TRACE ELEMENTS, FLUID/MELT INCLUSIONS AND OXYGEN ISOTOPES

Zaw K.; Dellapasqua F.; Sutherland F.L.; Ryan C.G.; Yui T.-F.; Mernagh T.P.; Duncan D. (2006)

Corundum xenocrysts from alkaline basalt fields differ in characteristics and hence lithospheric origins. Trace element, fluid/ melt inclusion and oxygen isotope studies on two eastern Australian corundum deposits are ...
SINGLE-CRYSTAL ELASTIC PROPERTIES OF ALUNITE, KAL3 (SO4)2(OH)6

Majzlan J.; Speziale S.; Duffy T.S.; Burns P.C. (2006)

The single-crystal elastic constants of natural alunite (ideally KAl3(SO4)2(OH)6) were determined by Brillouin spectroscopy. Chemical analysis by electron microprobe gave a formula KAl3(SO4)2 (OH)6. Single crystal X-ray ...
THE LAND PLANT δ13C RECORD AND PLANT EVOLUTION IN THE LATE PALAEOZOIC

Peters-Kottig W.; Strauss H.; Kerp H. (2006)

Based on the evaluation of 1323 carbon isotope values for Silurian to Permian terrestrial organic carbon, measured on plant fossils, cuticules, humic coals and bulk terrestrial organic matter (TOM), we conclude that the ...
THE GENESIS OF ARCHAEAN CHROMITITES FROM THE NUASAHI AND SUKINDA MASSIFS IN THE SINGHBHUM CRATON, INDIA

Mondal S.K.; Ripley E.M.; Li C.; Frei R. (2006)

The chromitite deposits of the Nuasahi and Sukinda massifs are part of layered ultramafic bodies which occur within Archaean low-grade metamorphic rocks of the Iron Ore Group (IOG) in the Singhbhum Craton of the Indian ...
CRYSTAL STRUCTURES OF SULFIDES AND OTHER CHALCOGENIDES

Makovicky E. (2006)

In this chapter, the crystal structures of sulfides and related chalcogenide compounds (involving Se, Te, As and Sb as well as S) are reviewed with emphasis on mineral phases but with some discussion of related synthetic ...
GEOCHEMICAL AND MINERALOGICAL DISTRIBUTION OF GERMANIUM IN THE KHUSIB SPRINGS CU-ZN-PB-AG SULFIDE DEPOSIT, OTAVI MOUNTAIN LAND, NAMIBIA

Melcher F.; Oberthür T.; Rammlmair D. (2006)

The Khusib Springs deposit in the Otavi Mountain Land, Namibia, is a small though high-grade carbonate-hosted Cu-Zn-Pb-Ag-(As-Sb-Ge) deposit of the "Tsumeb-type" containing approximately 300,000 t of ore grading 10% Cu, ...
CATAMARCAITE, CU6GEWS8, A NEW GERMANIUM SULFIDE MINERAL SPECIES FROM CAPILLITAS, CATAMARCA, ARGENTINA: DESCRIPTION, PARAGENESIS AND CRYSTAL STRUCTURE

Putz H.; Paar W.H.; Topa D.; Makovicky E.; Roberts A.C. (2006)

Catamarcaite, ideally Cu6GeWS8, was discovered in bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina. The new mineral is associated with bornite, digenite, ...
PHOTIC ZONE PALAEOENVIRONMENTS OF THE KIMMERIDGE CLAY FORMATION (UPPER JURASSIC, UK) SUGGESTED BY CALCAREOUS NANNOPLANKTON PALAEOECOLOGY

Lees J.A.; Bown P.R.; Young J.R. (2006)

Nannoplankton abundance data has revealed significant and systematic population fluxes through all representative lithologies and cycle types of the Kimmeridge Clay Formation (KCF), and also through intervals in which ...
PALAEOENVIRONMENTAL CHANGES AT THE FRASNIAN/FAMENNIAN BOUNDARY IN KEY EUROPEAN SECTIONS: CHEMOSTRATIGRAPHIC CONSTRAINTS

Pujol F.; Berner Z.; Stüben D. (2006)

The study aims to put constraints on global environmental changes, which took place during the Frasnian-Famennian (F/F) transition by using a geochemical multiproxy approach. For this several key European F/F boundary ...
VEGETATION BURIED UNDER DAWSON TEPHRA (25,300 14C YEARS BP) AND LOCALLY DIVERSE LATE PLEISTOCENE PALEOENVIRONMENTS OF GOLDBOTTOM CREEK, YUKON, CANADA

Zazula G.D.; Mathewes R.W.; Froese D.G.; Reyes A.V.; Elias S.A.; Kuzmina S.; La Farge C.; Sanborn P.T.; Schweger C.E.; Scott Smith C.A. (2006)

Paleoecological research at Goldbottom Creek in the Klondike region of Yukon Territory (NW Canada) documents an in situ riparian grassy meadow that was buried during the winter or early spring by Dawson tephra, near the ...
ASSEMBLAGE PALAEOECOLOGY OF THE EDIACARA BIOTA: THE UNABRIDGED EDITION?

Droser M.L.; Gehling J.G.; Jensen S.R. (2006)

Fossils of the Ediacara biota offer our earliest insight into diverse macroscopic life on this planet. In particular, given the diversity and range of exquisite soft-bodied preservation, the potential for unraveling aspects ...
CRUSTAL MOTION AND STRAIN ACCUMULATION IN WESTERN BULGARIA

Kotzev V.; Nakov R.; Georgiev Tz.; Burchfiel B.C.; King R.W. (2006)

Global Positioning System (GPS) data acquired between 1996 and 2004 and fault plane solutions for four seismic zones are analyzed to obtain the velocity and strain rate fields for western Bulgaria. The GPS derived velocities ...
MOLAR TOOTH STRUCTURES OF THE NEOARCHEAN MONTEVILLE FORMATION, TRANSVAAL SUPERGROUP, SOUTH AFRICA. I: CONSTRAINTS ON MICROCRYSTALLINE CACO3 PRECIPITATION

Bishop J.W.; Sumner D.Y. (2006)

Molar tooth (MT) structures are enigmatic, contorted millimetre- to decimetre-long veins and spheroids of microcrystalline calcite that formed during very early diagenesis in Precambrian sediments. MT structures in the ca ...

Now showing items 461-480 of 43490

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