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Now showing items 9379-9398 of 39066
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(1990)The melt impactites (tagamites) of the Boltysh astrobleme (in the Ukraine) form a body more than 200 m thick (the diameter of the structure is approximately 24 km). The rocks of the target area consist of Precabrian granites ...
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(2004)The qualitative and quantitative analysis of the holomorphic folding morphology in the central segment of the South Tien Shan revealed its heterogeneity in the Paleozoic rock sequences. Against the background of the gradual ...
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(2002)Neocassandra mica Daniltshenko, 1968 from the Late Paleocene of Turkmenistan is revised and assigned to the order Aulopiformes. However, it substantially differs from all members of the order in the following characters: ...
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(2001)The systematic position of a peculiar group of Angaran gymnosperms usually treated as "cordaites" is discussed. The systematics of these plants related to coniferophytes remains uncertain because of their extreme peculiarity. ...
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(2003)The morphology and systematic position of Sphenophyllum biarmicum Zalessky are discussed. "Gangamopteris" fimbriata Zalessky, "G." tenuinervis Zalessky, and Sphenophyllum comiense Tschirkova are considered to be synonyms ...
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(1999)High-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) peak broadening (Scherer) analysis were used to study coarsening and morphology development of nanocrystals. Experimental work used ...
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(2003)Eight morphological types of the initial chamber (cephalis) of Late Cretaceous radiolarians of the order Nassellaria are described; seven of them, i.e., Perseus, Napora, Arcanicapsa, Cornutella, Theocoronium, Sciadiocapsa, ...
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(2001)In pelitic schists composed mainly of quartz and albite grains, the morphology of intergranular pores, which were filled with water, was studied by transmission electron microscopy (TEM). Although some pores are defined ...
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(1988)We made mass determinations of the morphology and the particle size of non-recoverable gold from weathered mantle developed in Yakutia, the Krasnoyarsk kray and the Urals on gold-sulfide-quartz deposits with finely divided ...
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(2004)On the basis of a comprehensive analysis of the morphology of the genus Rhombotrypella, its astogeny is described for the first time. The taxonomic composition of this genus is revised to comprise 45 species. The lifespan ...
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(2004)Morphology and growth mechanisms of diamond crystals in polycrystalline films synthesized from hydrocarbon gas have been studied under an electron microscope using secondary electron images. It was found that at the earlier ...
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(1998)This paper describes morphometric measurements made in Lake Karymskoe in connection with the underwater eruption of January 1996. Echo sounding was carried out in April-September of 1996. Bathymetric maps were plotted for ...
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(1988)This article discusses the shape characteristics of iron-manganese nodules and their dependence on the chemical composition and growth rate of the nodules. A sample of length of three axes for 609 nodules from the ...
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(2003)Knowledge of mineral aggregate morphologies is of importance to analyze characteristic differences in rock-forming features. For quantifying these differences, the fractal geometry of quartz aggregate cuts digitized from ...
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(1999)The new maps of Quaternary and recent tectonic movements were compiled with the use of new geologiegéomorphologie and geodetic data.
Now showing items 9379-9398 of 39066