Results 161 to 170 of about 4,092 (217)

Late-orogenic retrograde zircon growth. [PDF]

open access: yesContrib Mineral Petrol
Dyer SC   +3 more
europepmc   +1 more source

Melt-bearing nodules from Tenerife reveal magma reservoir diversity prior to caldera-forming eruptions. [PDF]

open access: yesContrib Mineral Petrol
Horn EL   +7 more
europepmc   +1 more source

Plagioclase-alkali-feldspar geothermometry revisited

open access: yesMineralogical Magazine, 1977
SummaryThe plagioclase-alkali-feldspar geothermometer formulated by Stormer (1975) does not take into account the effect of small amounts of calcium in the alkali feldspar. This geothermometer has been reformulated using ternary regular solution model equations, and it is shown that as the Ca content of the alkali feldspar increases the temperature ...
Marjorie Powell, Roger Powell
openaire   +2 more sources
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Internal U, Th and Rb concentrations of alkali-feldspar grains: Implications for luminescence dating [PDF]

open access: yesQuaternary Geochronology, 2016
This study assesses whether internal U, Th and Rb concentrations of single grains of alkali-feldspar can impact upon luminescence dating. Internal alpha dose-rates determined for two sedimentary samples calculated from mean U and Th concentrations ...
Rachel K Smedley, Nicholas J G Pearce
exaly   +2 more sources

Alkali feldspar syenites with shoshonitic affinities from Chhotaudepur area: Implication for mantle metasomatism in the Deccan large igneous province

open access: yesGeoscience Frontiers, 2014
Two petrologically distinct alkali feldspar syenite bodies (AFS-1 and AFS-2) from Chhotaudepur area, Deccan Large Igneous Province are reported in the present work.
K R Hari   +2 more
exaly   +2 more sources

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