Results 41 to 50 of about 14,330 (223)
APG2: a New Version of APG, an Application for Amphibole-Plagioclase Geothermobarometry [PDF]
Journal of Sciences, Islamic Republic of Iran, 2016 APG2 is a computer application designed for amphibole-plagioclase geothermobarometry. It is the first updated version of APG and supports 4 thermometer models and 6 barometer models involving either amphibole-plagioclase or amphibole only.
M. Sayari
doaj
A New High-Pressure Phase Transition in Natural Gedrite
Crystals, 2019 High-pressure diamond-anvil cell synchrotron X-ray diffraction experiments were conducted on single-crystal samples of natural orthoamphibole; gedrite; with composition; (K0.002Na0.394)(Mg2)(Mg1.637Fe2.245Mn0.004Ca0.022Cr0.003Na0.037Al1.052)(Si6.517Al1 ...
Tommy Yong +4 more
doaj +1 more source
A talus rock glacier in Nantlle Valley, North Wales
Journal of Quaternary Science, EarlyView.ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley +1 more source
Experimentally determined stability of alkali amphibole in metasomatised dunite at sub-arc pressures [PDF]
, 2015 The phase and melting relationships of olivine mixed with 25 % of hydrous felsic slab melt have been determined in piston-cylinder experiments between 2.5 and 4.5 GPa and 800 to 1,050 °C to constrain metasomatic processes in the mantle wedge above ...
Pirard, Cassian, Hermann, Jörg
core +2 more sources
, 2013 Educação Superior::Ciências Exatas e da Terra::GeoCiênciasThis image shows the mineral Amphibole, from the family of silicates. It usually contains iron, calcium, magnesium and aluminum in variable amounts, with silicon, oxygen and water.
U.S. Geological Survey
core +2 more sources
Experimental Evidence for a Weak Calcic‐Amphibole‐Rich Deep Crust in Orogens
Geophysical Research Letters, 2023 Amphibole‐rich rocks constitute significant components of the mid‐ to lower continental crust, particularly in active orogens characterized with thick and hot crusts. Nevertheless, experimental data on their viscosity remain scarce.
X. Wang +7 more
doaj +1 more source
A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis
Archaeometry, EarlyView.ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean +7 more
wiley +1 more source
Al-in-amphibole barometry of calcalkaline magma: assessment of active subvolcanic systems.
, 2007 Ca-amphiboles (hornblende-hastingsite-pargasite solution) have been historically tested by many authors in order to discern their physic-chemical stability and the evolution of calcalkaline magmas at subduction-related systems.
RIDOLFI, FILIPPO, RENZULLI, ALBERTO
core +1 more source
Genetic types and provenance indication of clastic amphibole in the South Yellow Sea
Frontiers in Marine ScienceThe main focus of studying sediment sources in marine areas is to determine the properties of clastic minerals originating from different rivers. Variations in the characteristics of clastic minerals occur due to differences in the types of source rocks ...
Mengyao Wang +5 more
doaj +1 more source
Литосфера, 2019 Research subject. High-magnesium rocks associated with the granitoid massifs of the Urals are represented by gabbro-diorites and their melanocratic varieties (hornblendites), as well as by diorites and quartz diorites.
S. V. Pribavkin +4 more
doaj +1 more source