Results 91 to 100 of about 160,877 (359)
STRUCTURE AND COMPOSITION OF KENYAITE AFTER THERMAL ANNEALING [PDF]
Минералогия, 2018 Kenyaite Na2Si22O41(OH)8•6H2O previously found at the cacholong occurrence in the Orenburg region (South Urals) was studied using physicochemical methods.
M.V. Shtenberg +4 more
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The Depositional Record, EarlyView.Bermuda patch reefs development was primarily controlled by massive coral framework construction, and variation in environmental energy, turbidity and bioerosion. These factors shaped the size, diversity and preservation of the framework, leading to a suppressed, steady vertical accretion.
Eduardo Islas‐Dominguez +2 more
wiley +1 more source
EXPERIMENTAL MELTING AND CRYSTALLIZATION OF ANDESITE OF BEZYMYANNY VOLCANO, KAMCHATKA [PDF]
Минералогия, 2017 Results of melting and crystallization of andesite from Bezymyanny volcano in Kamchatka at temperature of 1200–1300 °С and normal pressure are given. It is found that the structure of crystallization products of an andesite melt is distinct from natural ...
L.Y. Kabanova +2 more
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Anomalously cool clumped isotope temperatures in tropical lagoon carbonates
The Depositional Record, EarlyView.Carbonate clumped isotopes were used to reconstruct paleoclimate from lagoon sediments in the central tropical Pacific. Results were anomalously cool compared to modern measurements and other paleoclimate records. This study highlights the important of understanding carbonate facies and depositional environments in interpreting clumped isotope results.
D. A. Wyman‐Feravich +4 more
wiley +1 more source
SILVER MINERALS FROM QUARTZ VEINS OF THE KRASNOE DEPOSIT (BODAYBO ORE REGION) [PDF]
Минералогия, 2015 The paper characterizes silver tellurides, sulfotellurides and sulfosalts from the quartz-galena veins of the Krasnoe deposit (Bodaybo region), which is hosted by Upper Proterozoic carbonaceous clastic rocks.
E.E. Palenova +2 more
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Clay mineralogy and shale instability: an alternative conceptual analysis
Clay minerals, 2014 The instability of shales in drilled formations leads to serious operational problems with major economic consequences for petroleum exploration and production.
M. J. Wilson, L. Wilson
semanticscholar +1 more source
The Depositional Record, EarlyView.The data and interpretations of this study are used to test the proposal by Goldhammer et al. that a ‘stratigraphy of early diagenesis’ is operational in carbonate depositional systems. What this means is that distinct mineralogical and geochemical changes to rock and sediment occur associated with external controls, such as the rise and fall of sea ...
Donald F. McNeill, Peter K. Swart
wiley +1 more source
SYNTAXY OF TITANITE, AEGIRINE AND ECKERMANNITE IN ALKALI SYENITE PEGMATITES OF THE VISHNEVYE MOUNTAINS (SOUTH URALS) [PDF]
Минералогия, 2016 Crystallographic orientation of titanite intergrowths with aegirine and eckermannite was found in alkali syenite pegmatites of the Vishnevye Mountains: the titanite face ( 1 11) is parallel to pyroxene and amphibole face (010) and the titanite face (110)
V.A. Popov, I.A. Blinov, V.I. Popova
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