Results 11 to 20 of about 5,174 (245)

Review of the Post-IR IRSL Dating Protocols of K-Feldspar [PDF]

open access: yesMethods and Protocols, 2020
Compared to quartz, the infrared stimulated luminescence (IRSL) of K-feldspar saturates at higher dose, which has great potential for extending the dating limit.
Junjie Zhang, Sheng-Hua Li
exaly   +4 more sources

Microfluidic Leaching of Soil Minerals: Release of K+ from K Feldspar. [PDF]

open access: yesPLoS ONE, 2015
The rate of K+ leaching from soil minerals such as K-feldspar is believed to be too slow to provide agronomic benefit. Currently, theories and methods available to interpret kinetics of mineral processes in soil fail to consider its microfluidic nature ...
Davide Ciceri, Antoine Allanore
doaj   +2 more sources

The Thermoluminescence Parameters of Irradiated K-Feldspar

open access: yesEast European Journal of Physics, 2023
Isothermal decay of the TL glow curve has been studied at ambient temperature. Heating of feldspar at 600ºC leads to increased sensitivity of the samples upon irradiation for the whole range of glow curve.
Sahib Mammadov   +3 more
doaj   +2 more sources

K-Ar geochronology for hydrothermal K-feldspar within plagioclase in a granitic pluton: constraints on timing and thermal condition for hydrothermal alteration [PDF]

open access: yesHeliyon, 2021
This study presents the K-Ar geochronology for hydrothermal K-feldspar in plagioclase alteration, including methodology and application to the Toki granite, in central Japan.
Takashi Yuguchi   +3 more
doaj   +2 more sources

Ice nucleation properties of K-feldspar polymorphs and plagioclase feldspars [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
The relation between the mineralogical characteristics of size-selected feldspar particles from 50 to 800 nm and their ability to act as ice-nucleating particles (INPs) in the immersion mode is presented.
A. Welti   +3 more
doaj   +4 more sources

Mesoscale and microscopic structures record compaction and crystal-melt segregation in silicic mushes [PDF]

open access: yesScientific Reports
Gravitationally-driven compaction has been proposed as an important mechanism for crystal-melt segregation in silicic mushes. However, there is no microstructural evidence of crystal deformation consistent with compaction in silicic plutonic rocks.
Yun-Chao Liu, Yao-Hui Jiang, Bo-Ning Han
doaj   +2 more sources

Photoconductivity on K-feldspar [PDF]

open access: yesInternational Journal of Modern Physics B, 2021
In the development of most phenomenological models used to explain the infrared excited luminescence, a major assumption is usually made in the degree of freedom the excited charge has. One of the two extremes is normally assumed: charge is free to move anywhere over the whole crystal, or it is confined close to the trap and the centers immediately ...
openaire   +1 more source

Role of K-feldspar and quartz in global ice nucleation by mineral dust in mixed-phase clouds [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Ice-nucleating particles (INPs) enable ice formation, profoundly affecting the microphysical and radiative properties, lifetimes, and precipitation rates of clouds.
M. Chatziparaschos   +18 more
doaj   +1 more source

K-feldspar enrichment in the Pacific pelagic sediments before Miocene

open access: yesProgress in Earth and Planetary Science, 2023
The mineralogy of atmospheric silicate dust controls its interaction with clouds. K-feldspar has a remarkably high ice-nucleating activity, and its distribution may have influenced the global climate throughout Earth's history.
Yoichi Usui, Toshitsugu Yamazaki
doaj   +1 more source

EFFECT OF BIOCHAR ON K AND P RELEASE FROM K-FELDSPAR & ROCK PHOSPHATE AND ITS IMPACT ON SOME GROWTH PARAMETER OF MAIZE PLANT [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2019
Pot experiments were carried out using sand (collected from Ismailia ARS), in the greenhouse to study the effect of biochar application, on K and P release from their natural bearing minerals i.e.,K- feldspar and rock phosphate and\or bentonite on some ...
Manal El mahdy   +3 more
doaj   +1 more source

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