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ELibrary: Recent submissions
Now showing items 1-20 of 25946
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(2006)The most powerful and determinant step affecting the efficiency and economy of a quarry is the rock fragmentation by blasting techniques. Economic investigations, considering sequential costs prove that blasting techniques ...
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(2006)The thermal response of the natural ferroan phlogopite-1M, K2(Mg4.46Fe0.83Al0. 34Ti0.22)(Si5.51Al2. 49)O20[OH3.59F0.41] from Quebec, Canada, was studied with an in situ neutron powder diffraction. The in situ temperature ...
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(2006)Electron Paramagnetic Resonance (EPR) measurements show that Li+ impurities are located at two different positions in beryl, one in the crystal lattice and the other in the crystal channel. The position of the Li+ impurity ...
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(2006)Lake Wanapitei (132.75 km2) fills what has been identified as an Eocene (c. 37 Ma) meteorite impact basin in the Canadian Shield near Sudbury, Ontario, Canada. The area was glaciated many times during the Pleistocene and ...
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(2006)We used seismic images and sedimentary data from piston cores to conduct a sequence stratigraphic analysis of sediments in Lake Petén Itzá, northern Guatemala. Our results document lake level fluctuations in this lowland ...
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(2006)The Earth’s core contains light elements and their identification is essential for our understanding of the thermal structure and convection in the core that drives the geodynamo and heat flow from the core to the mantle. ...
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FROM THE GREEN COLOR OF ESKOLAITE TO THE RED COLOR OF RUBY: AN X-RAY ABSORPTION SPECTROSCOPY STUDY (2006)The best known cause for colors in insulating minerals is due to transition metal ions as impurities. As an example, Cr3+ is responsible for the red color of ruby (α-Al2O3:Cr3+) and the green color of eskolaite (α-Cr2O3). ...
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(2006)This chapter deals with applications of neutron diffraction to the understanding of transformation processes in geomaterials with a time-resolution from seconds to several days. The choice of neutrons rather than X-rays ...
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(2006)Carbonate rocks of the Rhenohercynian and Saxothuringian zones of the Variscan Mountains, Prague Syncline, Carnic Alps, Montagne Noire, Pyrenees, and Cantabrian Mountains were investigated for δ13Ccarb. The values were ...
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PRECOLLISIONAL, MULTISTAGE EXHUMATION OF SUBDUCTED CONTINENTAL CRUST: THE SESIA ZONE, WESTERN ALPS (2006)The Sesia Zone within the Tertiary arc of the western Alps is a relic of the subducted part of the Adriatic continental margin along the SE border of the Tethyan ocean. The Sesia Zone comprises three basement nappes which ...
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(2006)Synthetic (Ca1-xNax)(Ti1-x Nbx)OSiO4 and Ca(Ti1-2x NbxAlx)OSiO4 solid solutions have been prepared for x = 0.1 and 0.2 by ceramic methods and their crystal structure determined by Rietveld analysis. At ambient conditions, ...
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(2006)This paper examines how active faulting in the Turkey-Iran-Caucasus region accommodates the Arabia-Eurasia collision and the velocity field observed by GPS. The overall shortening across the zone is, in general, spatially ...
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(2006)Mississippi Valley type galena deposits emplaced into Carboniferous limestones throughout the Mendip Hills during the late Permian or Triassic period were locally exposed to the action of seawater during the Jurassic period ...
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(2006)Members of the pyrophanite-geikielite solid-solution series, Mn1-xMgxTiO3 (0 < x < 0.7 apfu Mg), were obtained by solid-state synthesis at 1000°C at ambient pressure in air. In common with ilmenite, ternary Mn-Mg titanates ...
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(2006)The theoretical basis of evolutionary biology is presented and discussed to introduce the reader to problems of evolutionary theory and particularly to the problem of paradigm selection. Advantages of the epigenetic ...
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(2006)Determining the timing, duration and mechanism of tectonic events within an orogenic cycle, such as ocean subduction, continent-continent collision or gravitational collapse, is challenging, especially in ancient orogenic ...
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(2006)Several studies have noted a relationship between vegetation type and fire frequency, yet despite the importance of ecosystem processes such as fire the long-term relationships between disturbance, climate and vegetation ...
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(2006)Lapilli formed by a Strombolian eruption are associated with the formation of a large lava flow of natrocarbonatite on or about 21-22 July, 2000 at Oldoinyo Lengai volcano, Tanzania. Fresh lapilli consist of vesicular ...
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(2006)Stalactites formed by the chemical weathering of natrocarbonatite lava decorate the roofs of hollow inactive hornitos at Oldoinyo Lengai, Tanzania. The stalactites are composed principally of trona with lesser and very ...
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(2006)Recommended reporting practice concerning 14C dates, relevant for Quaternary Geochronology, is given in this report. © 2007 Elsevier Ltd. All rights reserved.
Now showing items 1-20 of 25946