A5049316974- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Mineralogy and Gemology Studies
- Hedgehog Signaling Pathway Studies
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- Plant Physiology and Cultivation Studies
- CO2 Sequestration and Geologic Interactions
- Oral and Maxillofacial Pathology
- Geotechnical and Geomechanical Engineering
- Oral and gingival health research
- Minerals Flotation and Separation Techniques
- Cancer and Skin Lesions
- Geological formations and processes
- Vascular Malformations and Hemangiomas
- Mining and Gasification Technologies
- Hydrocarbon exploration and reservoir analysis
- Cultural Heritage Materials Analysis
- Isotope Analysis in Ecology
- Calcium Carbonate Crystallization and Inhibition
- Nuclear materials and radiation effects
- Building materials and conservation
University of Lausanne
2022-2024
University of Oregon
2016-2020
Cascade (United States)
2020
Universidad Peruana Cayetano Heredia
2017-2018
Instituto Nacional de Enfermedades Neoplásicas
2017
Fossil forests have world-wide distribution, commonly preserving mineralized wood that displays vivid hues and complex color patterns. However, the origin of petrified has received little scientific attention. Color silicified may be influenced by presence relict organic matter, but most significant contribution comes from trace metals. This study reports quantitative analysis metals in 35 samples, determined using LA-ICP-MS spectrometry. The important these is Fe, which can produce a...
Substrate roughness influences epitaxial nucleation, growth, and trace element incorporation. We qualitatively quantitatively examine the role of calcite surface on overgrowth morphology Sr concentration. Surfaces were made by cleaving optically clear Iceland spar, then abrading cleavage surfaces with sandpaper (physical weathering analogues), or attacking dilute HCl (chemical analogues). Calcite precipitated "weathered" have morphologies that vary systematically from one substrate type to...
Abstract The forsterite zone of the Ubehebe Peak contact aureole, Death Valley, USA consists an outer tabular/jack-straw olivine and inner subequant polyhedral olivine. Subequant crystals close to intrusion are small tabular farther away larger. To investigate formation two morphologies, growth experiments were conducted in cold seal pressure vessels CaO-MgO-SiO 2 -CO -H O system. Forsterite precipitation follows a disequilibrium reaction pathway made three reactions: [1] from quartz...
Abstract Hydrothermal quartz veins from the Butte deposit display euhedral and mottled cathodoluminescent (CL) textures that reflect growth deformation history of crystals. A CL-euhedral texture consists oscillatory dark-light zonations record primary precipitation an aqueous fluid. The origin a CL-mottled texture, which irregularly distributed dark light portions, is less clear. Previous work showed in some veins, crystals coexist, but processes leading to their formation coexistence were...
El síndrome Gorlin (SG) es una condición genética, con patrón de herencia autosómico dominante, penetrancia completa y expresividad variable, debida a mutaciones germinales en los genes PTCH1 o SUFU, cuales son componentes la vía molecular Sonic hedgehog. SG se caracteriza por presencia múltiples carcinomas células basales nevoides, quistes odontogénicos, calcificación hoz del cerebro lesiones sacabocado palmas plantas. Este el primer reporte casos Perú sobre pacientes SG, que cuentan...
<p>Magma emplacement and the mingling of sediment with magma (forming peperite facies) in unconsolidated, near-surface basin sediments have been described fossil systems but not reported active settings. The IODP Expedition 385 drilled through soft (first 500 m) Guaymas Basin, a young marginal rift Gulf California. This is characterized by an unusually high spatial density sill intrusions emplaced off-axis. One sills, inferring within 200 m depth below seafloor (Site U1547),...