Results 91 to 100 of about 50,959 (268)
Bentonite clays of Russia and neighboring countries
Georesursy, 2019 Bentonite clay is an important natural material, widely used in many industries. The purpose of this article is to analyze the mineral resource base of bentonite clays in Russia.
Peter E. Belousov, Victoria V. Krupskaya
doaj +1 more source
An investigation into the controls of granite plutonism in the Sierra da Freita region, Northern Portugal [PDF]
, 2012 The Serra da Freita region of north central Portugal was chosen for study as it displays the complex relationships between regional structure, plutonism, regional and contact metamorphism typical of this part of Iberia.
Reavy, Reginald John
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The Depositional Record, Volume 12, Issue 1, February 2026.This paper discusses a new model concerning the precipitation mechanismand significance of anhydrite cement in tight sandstone. Anhydrite cement ismainly formed by the dissolution and reprecipitation of early‐diageneticcalcite cements, feldspars and volcanic rock fragments at the mesodiageneticstage.
Long Luo +10 more
wiley +1 more source
TEV—A Program for the Determination of the Thermal Expansion Tensor from Diffraction Data
Crystals, 2015 TEV (Thermal Expansion Visualizing) is a user-friendly program for the calculation of the thermal expansion tensor αij from diffraction data. Unit cell parameters determined from temperature dependent data collections can be provided as input.
Thomas Langreiter, Volker Kahlenberg
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Timing of initiation of reverse displacement on the Taranaki Fault, northern Taranaki Basin: Constraints from the on land record (Oligocene Te Kuiti Group) [PDF]
, 2008 Structures associated with the wedge of basement overthrust into Taranaki Basin along the Taranaki Fault, are regarded as hydrocarbon plays and have been tested by drilling through the tip of the overthrust.
Kamp, Peter J.J. +1 more
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The Depositional Record, Volume 12, Issue 1, February 2026.We propose that one of the largest known bioconstructions (the Monte Zenone bioherm) in the Southern Alps, northern Italy, and its growth on a tilted and drowned platform block of the Norian Dolomia Principale was controlled by hydrothermal dolomitisation from fault‐controlled fluids during the Late Triassic–Early Jurassic rifting phase. Dolomitisation
Martin Müller +3 more
wiley +1 more source
Luminescence petrography of the Apollo 12 rocks and comparative features in terrestrial rocks and meteorites Final report [PDF]
Luminescence petrography of Apollo 12 rocks and comparative features in Apollo 11 rocks, terrestrial rocks, and ...
Sippel, R. F.
core +1 more source
The Origin and Significance of Reverse Zoning in Melilite from Allende Type B Inclusions [PDF]
, 1984 In many Type B Allende inclusions, melilite is reversely-zoned over restricted portions of each crystal. Textural relationships and the results of dynamic crystallization experiments suggest that the reverselyzoned intervals in these Type melilites ...
Grossman, Lawrence +3 more
core +1 more source
Impact Reactivation of a Hydrothermal System in Basalt in the Vargeão Dome Impact Structure, Brazil
Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.Abstract As hydrous minerals have been observed in impact craters on Mars, impact‐generated hydrothermal systems (IGHSs) have been considered as potential habitats for life on that planet. The Vargeão Dome, a 12 km wide impact structure in southern Brazil, was formed in basalts with at least two hydrothermal alteration stages.
Jitse Alsemgeest +5 more
wiley +1 more source
Russian Journal of Earth SciencesFor the first time, the results of modern studies of the earth's crust based on gravity data from the GOCE satellite Project are used for a comparative regional metallogenic analysis of the geodynamic settings of the formation of polymetallic deposits in
Galyamov A. L. +2 more
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