A5102843016- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Geological formations and processes
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Geological and Tectonic Studies in Latin America
- Archaeological and Geological Studies
- Drilling and Well Engineering
- Geochemistry and Elemental Analysis
- Geochemistry and Geochronology of Asian Mineral Deposits
- Seismology and Earthquake Studies
- Hygrothermal properties of building materials
- Astro and Planetary Science
- Plant Ecology and Soil Science
- World Trade Organization Law
- Pleistocene-Era Hominins and Archaeology
- Botany and Geology in Latin America and Caribbean
- China's Ethnic Minorities and Relations
- Conservation Techniques and Studies
University of Nevada, Reno
2016-2024
Rice University
2016-2018
Southern California Earthquake Center
2015-2016
University of Southern California
2015-2016
Southern California University for Professional Studies
2015
China University of Geosciences (Beijing)
2008-2009
Abstract Long-standing debates exist over the timing and mechanism of uplift Tibetan Plateau and, more specifically, connection between lithospheric evolution surface expressions plateau volcanism. Here we show a T-shaped high wave speed structure in our new tomographic model beneath South-Central Tibet, interpreted as an upper-mantle remnant from earlier foundering. Its spatial correlation with ultrapotassic adakitic magmatism supports hypothesis convective removal thickened lithosphere...
We conducted a 2-D thermomechanical modeling study of intrusion granitic magma into the continental crust to explore roles multiple pulsing and dike-diapir interactions in presence visco-elasto-plastic rheology. Multiple is simulated by replenishing source regions with new pulses at certain temporal frequency. Parameterized “pseudo-dike zones” above are included. Simulation results show that both diking crucial factors facilitating ascent emplacement. keep magmatic system from freezing...
Elevations on Earth are dominantly controlled by crustal buoyancy, primarily through variations in thickness: continents ride higher than ocean basins because they underlain thicker crust. Mountain building, where crust is magmatically or tectonically thickened, thus key to making continents. However, most of the have long passed their mountain building origins, having since subsided back near sea level. The elevations old, stable lower that expected for thicknesses, requiring a subcrustal...
In this study, structures in plutons and host rocks are coupled with geochronology to track paleodeformation fields from the late Paleozoic Late Cretaceous central Sierra Nevada. Regional NW-striking host-rock foliation, NE- or SW-vergent thrust faults, associated folds developed early Mesozoic Early Cretaceous. Dextral transpressional shear zones Strikes of steep-dipping magmatic foliations temporally vary approximately NW (Triassic–Jurassic) WNW (Late Cretaceous), displaying a progressive...
Although the Himalayan orogenic belt is dominant by Oligocene to Miocene leucogranites, it initiated magmatic activity from middle Eocene. However, exact distribution and genesis of early magmatism yet be resolved. This study identified new outcrops Eocene magmatism, Haweng granodiorite porphyries, northwest Langkazi in northern Tethyan Himalaya, southern Tibet. Identical zircon U–Pb ages were obtained secondary ion mass spectrometry (SIMS) (17JT13: 45.3±0.4 Ma; 17JT16: 44.5±0.8 Ma) laser...
ABSTRACT A one‐dimensional mass balance and isostasy model is used to explore the feedbacks between magmatism, deformation surface erosion how they together affect crustal thickness, elevation, exhumation in a continental arc. The applied central Sierra Nevada California by parameterizing magma volume deformational strain. simulations capture first‐order Mesozoic‐Cenozoic histories of elevation including moderate Triassic thickening Jurassic thinning followed strong Cretaceous thickening,...
Recent work has suggested a possible temporal coincidence between greenhouse intervals and enhanced arc volcanism, motivating the hypothesis that magmatic metamorphic CO<sub>2</sub> emissions from volcanic arcs, particularly those intersecting crustal carbonates, may play strong role in modulating long-term carbon budget of exogenic system. When hot fluid exsolving magmas interacts with carbonate sequences on active margins, contact metamorphism releases to metasomatic fluids transport...
Abstract A compilation of new and published detrital zircon U-Pb age data from Permo-Triassic to Cretaceous intra-arc strata the Sierra Nevada (eastern California, USA) reveals consistent sedimentary provenance depositional trends across entire arc. Detrital distributions are dominated by Mesozoic peaks corresponding coeval or just preceding arc activity. Many samples display a spread pre-300 Ma ages that is indistinguishable pre-Mesozoic prebatholithic framework southwestern Laurentian...
Abstract The Eastern Himalayan Syntaxis (EHS) is one of the fastest exhuming regions on Earth since ∼10 Ma, and mechanism its fast exhumation under debate. Different from many other studies based tectonics‐driven models, we performed analytical analysis numerical simulations to investigate an erosion‐driven system. Our results show that focused surface erosion alone able exhume lower crust timescale Myr. This process leads formation a domal structure, elevated geothermal gradient, rapid...
Abstract Magmatic periodicity is recognized in continental arcs worldwide, but the mechanism responsible for punctuated arc magmatism controversial. Continental Trans‐Himalayan orogenic system display episodic and most voluminous flare‐up this was early Eocene during transition from subduction to collision. The close association of with collision intriguing. Our study employs zircon Lu‐Hf bulk rock Sr‐Nd isotopes, along mineral geochemistry, track melt sources Nymo intrusive complex role...