Results 61 to 70 of about 13,016 (258)

Mineralogy of graphite-bearing schists and calculation of graphitization temperature in the Band-e-Cherk district, Anarak metallogenic zone [PDF]

علوم زمین خوارزمی, 2023
The Band-e-Cherk exploration area is located in the structural zone of central Iran, northeast of the city of Ardestan, and the Anarak metallogenic zone.
Majid Ghasemi Siani, Hamed Ebrahimi Fard, Amir Hossein Heidari, Behrouz Karimi Shahraki, Shahryar Mahmoudi   +4 more
doaj  

Assessment and Correction of Non‐Linearity Effects for In Situ Rb‐Sr Geochronology Applied to High 87Rb/86Sr Mica

Geostandards and Geoanalytical Research, EarlyView.
Key Points Measurement of 86Sr at count rates < 1500 cps can result in statistical bias. Non‐linear signals in analogue detection mode (e.g., Rb) present a challenge for accurately dating high 87Rb/86Sr mica (> 1000). Accounting for these considerations, high 87Rb/86Sr mica are dated here with accuracies of ∼ 1%.
Duane C. Petts, William J. Davis, Simon E. Jackson, Jamie A. Cutts, Janina Czas, Alfredo Camacho   +5 more
wiley   +1 more source

Coarse muscovite veins and alteration in porphyry systems

, 2019
Coarse muscovite veins and alteration occur in porphyry copper and porphyry molybdenum-copper systems within the Laramide arc in Arizona, as well as at the Yerington district in Nevada.
Lecumberri-Sanchez, Pilar, Runyon, Simone E., Steele-MacInnis, Matthew, Barton, Mark D., Seedorff, Eric, Mazdab, Frank K.   +5 more
core   +1 more source

Penetration enhancement effects of topically applied crosslinked hyaluronic acid

International Journal of Cosmetic Science, EarlyView.
Cross‐linked hyaluronic acid (HA) was demonstrated to enhance the topical delivery of a variety of hydrophilic actives into the skin. This phenomenon was observed for both small molecules and macromolecules, the latter of which was analysed with MALDI mass spectrometry imaging (MALDI‐MSI).
Aaron Cohen, Raphael Legouffe, Krystal House, Paul Duhamel, Aurore Tomezyk, Mathieu Gaudin, Junhong Mao, David Bonnel   +7 more
wiley   +1 more source

Kinetic studies of rubidium extraction from muscovite using chlorination roasting-water leaching process

工程科学学报, 2018
Rubidium is a very active and highly dispersed rare alkali metal, which has a wide range of applications in space technology, electronics, bioengineering, and materials science.
CHEN Li-jie, HUANG Lin-qing, YUAN Lu-cheng, TIAN Lei   +3 more
doaj   +1 more source

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer, Christopher L. Kirkland, Hugo Olierook, Tim Johnson, Katy Evans   +4 more
wiley   +1 more source

Prograde muscovite-rich pseudomorphs as indicators of conditions during metamorphism: An example from NW Maine

, 2008
During metamorphism, evidence of the prograde path is commonly obliterated by continued recrystallization as temperatures increase. However, prograde pseudomorphs that are common in many terrains may provide insight into this portion of the metamorphic ...
Foster, C. T., Whittington, Jennifer, Dutrow, Barbara L.   +2 more
core   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

Muscovite in pegmatite

, 2019
Light reflects from cleavage surface of muscovite flake just above the pencil point in pegmatite. Another muscovite book is to the left. This is a close-up of photo HNB_1818.JPG Project Name: Bald Mountain, Camdenhttps://digitalmaine.com ...
Berry, Henry N, IV
core  

Reaction‐Driven Development of Fine‐Grained Plagioclase Networks Influences the Rheology of the Crust in the Bergen Arcs, Norway

Journal of Metamorphic Geology, EarlyView.
ABSTRACT In the middle to lower continental crust, mineral reactions can play a key role in controlling rheological behaviour by generating fine‐grained, mechanically weak domains. In granulite‐facies rocks from Krossøy (Bergen Arcs, Norway), we document how garnet breakdown produced interconnected networks of orthopyroxene + plagioclase ± spinel that ...
Lorena H. Filiberto, Håkon Austrheim, José Alberto Padrón‐Navarta, Andrew Putnis, Christine V. Putnis   +4 more
wiley   +1 more source