Browsing ELibrary by Title
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Browsing ELibrary by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing ELibrary by Title
Now showing items 12366-12385 of 21936
-
(2004)A method is presented for the analysis and interpretation of apparent age spectra produced during 40Ar/39Ar step-heating experiments. Application of this method is particularly relevant to complex apparent age spectra ...
-
(2002)The concepts involved in the construction and interpretation of inverse isochron diagrams used in 40Ar/39Ar geochronology are reviewed. The diagrams can be useful as a means of recognising atmospheric argon and excess 40Ar, ...
-
(1999)Study of graphite-bearing ferriferous high-alumina hornfelses nearby an intrusive body of granitoids were carried out to investigate the matter behavior and elucidate the conditions under which mineral assemblages of thermal ...
-
(1999)The Uralide orogen, in Central Russia, is the focus of intense geoscientific investigations during recent years. The international research is motivated by some unusual lithospheric features compared with other collisional ...
-
(2004)Magnesium is second only to oxygen in abundance among the rock-forming elements and is an important element in the oceans and in hydrological and biological systems. Differences in the relative abundances of its three ...
-
(2000)The common, nominally anhydrous minerals of the Earth's mantle are an important reservoir for hydrogen in the Earth's interior due to their ability to incorporate hydroxyl in trace quantities. We present measurements of ...
-
(2000)The isotopic compositions of N2 (, ‰, atm) imply the geochemical origins of molecular nitrogen in natural gas accumulations, but the irregular variation of for most petroliferous basins puzzles scientists. We believe that ...
-
(1999)Vertical and lateral variations of δ13C and δ18O in the Lower Proterozoic (2.3-2.0 Ga) carbonates of the Baltic Shield are analyzed on the basis of carbon and oxygen isotope measurements in 460 Jatulian rock samples. The ...
-
(2004)The Jormua Ophiolite is an allochtonous mafic-ultramafic rock complex, thrusted onto the Karelian Craton margin that formed within a passive margin environment about 100 km southwest from its present position. Since ...
-
(1992)This paper presents the results of visual observations, particle-size analysis, seismological observations, and acoustic measurements carried out during a small-magnitude eruption of Bezymyannyi in June 1986. A model is ...
-
(2004)The Belemnotheutina is a monophyletic group of mostly late Jurassic belemnites that possess largely plesiomorphic characters of ten subequal arms with hooks, a simple, conical, rostrum, a narrow breviconic phragmocone and ...
-
(1997)A systematic analysis of the detailed biostratigraphy of Jurassic-Cretaceous boundary beds in principal regions of Russia is used to ground the correlation model of these deposits. The interregional correlations with ...
-
(1996)The Kakangari, LEW 87232, and Lea Co. 002 chondrites have a similar set of petrologic and oxygen isotopic characteristics that distinguishes them from other chondrite groups. They are here established to constitute a single ...
-
(1997)A petrological and mineralogical description of fragment 01.3.06 of the polymict meteorite breccia Kaidun is presented. The fragment is classified with EH3-4. This is the third type of enstatite chondrite that was found ...
-
(2003)Clasts of alkaline (the second find in meteorites) and subalkaline rocks were found in the Kaidun meteorite. One of them (#d4A) is a large crystal of albite with inclusions of fluorapatite, arfvedsonite, aenigmatite, and ...
-
(2004)Observed orbit perturbations of the near-Earth orbiting satellite CHAMP are analysed to recover the long-wavelength features of the Earth's gravitational potential. More precisely, by tracking the low-flying satellite CHAMP ...
-
THE KALAR ANORTHOSITE-CHARNOKITE COMPLEX OF THE ALDAN-STANOVOI SHIELD: AGE AND TECTONIC IMPLICATIONS (2004)The new data considered characterize age of magmatic rocks from the Kalar Complex of the anorthosite-mangerite-charnokite-granite association (AMCG) in the junction zone of the Aldan shield and Dzhugdzhur-Stanovoi fold ...
-
(2004)The Kamennoe gold sulfide deposit, situated in Riphean volcanogenic-sedimentary deposits of the Yakornaya suite (island arc complex) in Northern Transbaikal region, was studied. Unlike many gold quartz vein deposits and ...
Now showing items 12366-12385 of 21936