منابع مشابه
Experiments on Mixing and Segregating
Materials Guy Metcalfe CSIRO, Highett Vic 3190 Australia to be presented at Chemeca96, the Australian & New Zealand Chemical Engineering Conference Sydney, Sep 30{Oct 2 1996 SUMMARY When our intuition is based on liquid behaviour, granular solids ow and mix in ways both novel and unexpected. We describe 2and 3-dimensional experiments in tumbling containers tracking mixing and segregation of gra...
متن کاملMagma mixing enhanced by bubble segregation
In order to explore the materials’ complexity induced by bubbles rising through mixing magmas, bubbleadvection experiments have been performed, employing natural silicate melts at magmatic temperatures. A cylinder of basaltic glass was placed below a cylinder of rhyolitic glass. Upon melting, bubbles formed from interstitial air. During the course of the experimental runs, those bubbles rose vi...
متن کاملMagma hybridization in the middle crust: Possible consequences for deep-crustal magma mixing
The 465 Ma Svarthopen pluton in northcentral Norway was emplaced under middle-crustal conditions (~700 MPa) into metasedimentary rocks of the Helgeland Nappe Complex. The pluton is characterized by zones of mingling and mixing of gabbro/ diorite with peraluminous, garnet-bearing biotite granite. Variation in bulk-rock Sr and Nd isotope ratios are consistent with simple mixing; however, nonunifo...
متن کاملConcentration variance decay during magma mixing: a volcanic chronometer
The mixing of magmas is a common phenomenon in explosive eruptions. Concentration variance is a useful metric of this process and its decay (CVD) with time is an inevitable consequence during the progress of magma mixing. In order to calibrate this petrological/volcanological clock we have performed a time-series of high temperature experiments of magma mixing. The results of these experiments ...
متن کاملUsing Magma Mixing/Mingling Evidence for Understanding Magmatic Evolution at Mount Bidkhan Stratovolcano (South-East Iran)
Mount Bidkhan stratovolcano is located in the central Iranian volcanic belt. It is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. Textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. Evidences such as xenocrystic high Al+Ti clinopyrox...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2004
ISSN: 0094-8276
DOI: 10.1029/2004gl019687