A5022544292- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological and Tectonic Studies in Latin America
- Geochemistry and Geologic Mapping
- Metal Extraction and Bioleaching
- Mineral Processing and Grinding
- Law, logistics, and international trade
- Iron and Steelmaking Processes
- Geophysics and Sensor Technology
- Geomagnetism and Paleomagnetism Studies
- Minerals Flotation and Separation Techniques
- Paleontology and Stratigraphy of Fossils
- High-pressure geophysics and materials
- Geological formations and processes
University of Wisconsin–Madison
2016-2020
Research Article| July 10, 2017 Complementary crystal accumulation and rhyolite melt segregation in a late Miocene Andean pluton Allen J. Schaen; Schaen 1Department of Geoscience, University Wisconsin–Madison, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar John M. Cottle; Cottle 2Department Earth Science, California, Santa Barbara, California 93106, Brad S. Singer; Singer C. Brenhin Keller; Keller 3Department Geosciences, Princeton University,...
One model for rhyolite generation in the upper crust is via extraction of interstitial melt from crystal-rich magma reservoirs. Although silicic reservoirs may grow incrementally over c. 104–105 yr timescales, they can be remobilized prior to eruption much more rapidly (c. 101–103 yr). This process implies formation cumulate residues with a composition complementary extracted melt, but predicted cumulates have so far eluded widespread identification. The 7·2–6·2 Ma Risco Bayo–Huemul plutonic...
A warped paleoshoreline records 10,000 years of magma-driven surface deformation above an active rhyolite-producing reservoir.
Abstract The physical process of rhyolite segregation from crystal mushes remains elusive as microstructural evidence conventional mechanisms is not available. This study provides direct fabric for deformation‐assisted eruptible in the Chilean Andean arc. shallow (<7 km), 6.4–6.2 Ma Huemul pluton comprises domains quartz monzonite , granite and high‐silica . Compositional modeling shows that rhyolitic melt ( ) was extracted a granitic parent, leaving behind silicic cumulates ). To...
Abstract The Laguna del Maule volcanic field (LdMVF) in Chile, a rapidly inflating silicic system without historical eruption, is intersected by active regional faults. LdMVF provides an opportunity to observe how faults influence, accommodate, or are driven actively deforming large system. Here we use Compressed High Intensity Radar Pulse (CHIRP) acoustic reflection data map the fault network sediments captured within eponymous lake at and combine our maps with history, earthquake...