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I am a petrologist interested in tectonic problems. I address geologic problems concerning the evolution of orogenic regions primarily using petrologic and geochemical data. I am also interested in radiogenic isotope geology and oversee several geochemcial laboratories.VOSviewer
Courses
- RTRegional Tectonics
- GFCGeology Field Camp
- GTGeochronology and Thermochronology
- TCEEThe Chemical Evolution of Earth
- PPetrology
- TPTectonic Petrology
- PGPhysical Geology
Grants
- Collaborative Research: TransANdean Great Orogeny (TANGO)
Co-Investigator (COI)
2020
$1.8M
Active - Rare Earth Elements Tracing Crustal Evolution Through Time: A Detrital Zircon Study
Principal Investigator (PI)
2017
$212.6K
- Rare Earth Elements Tracing Crustal Evolution Through Time: A Detrital Zircon Study
Principal Investigator (PI)
2017
$3.1K
- Constraints on Plateau Architecture and Assembly From Deep Crustal Xenoliths, Northern Altiplano (Southern Peru)
Principal Investigator (PI)
2015
$112.0K
- Deep-Time Data Infrastructure--Paleotectonic Settings
Principal Investigator (PI)
2015
$78.9K
- Deep-Time Data Infrastructure--Paleotectonic Settings
Principal Investigator (PI)
2015
$53.9K
- Collaborative Research: The suturing process: Insight from the India-Asia collision zone
Co-Investigator (COI)
2011
$1.9M
- Collaborative Research: Crustal Overturn in Continental Margin Arcs During Magmatic Surges
Principal Investigator (PI)
2011
$197.8K
- CAUGHT: Central Andean Uplift and the Geodynamics of High Topography
Co-Investigator (COI)
2009
$935.1K
- Collaborative Research: In Pursuit of Missing Andean Lithosphere: Constraining Late Cenozoic Crust-Mantle Process in the Puna Pateau, Central Andes
Principal Investigator (PI)
2009
$368.8K
News
- UArizona Geologists to 'X-ray' the Andes
2021
- Moho Gone Missing, Geologists Say
2004
Publications (69)
Recent
- Preface and Acknowledgments
2015
- Geodynamic models of Cordilleran orogens: Gravitational instability of magmatic arc roots
2015
- Foundering-driven lithospheric melting: The source of central Andean mafic lavas on the Puna Plateau (22° S--27° S)
2015
- The Architecture, Chemistry, and Evolution of Continental Magmatic Arcs
2015
- Cyclical orogenic processes in the Cenozoic central Andes
2014
- Temporal growth of the Puna Plateau and its bearing on the post--Salta Rift system subsidence of the Andean foreland basin at 25° 30′ S
2014
- Age and geochemistry of western Hoh-Xil-Songpan-Ganzi granitoids, northern Tibet: Implications for the Mesozoic closure of the Paleo-Tethys ocean
2014
- Geochemical constraints on the petrogenesis of the Salinian arc, central California: Implications for the origin of intermediate magmas
2014
- Southern Tibetan Oligocene-Miocene adakites: A record of Indian slab tearing
2014
- The Upper Jurassic volcanism of the Rio Damas-Tordillo Formation (33 degrees-35.5 degrees S): Insights on petrogenesis, chronology, provenance and tectonic implications
2014
- Pluton assembly and the genesis of granitic magmas: Insights from the GIC pluton in cross section, Sierra Nevada Batholith, California
2014
- A novel approach to lead isotope provenance studies of tin and bronze: applications to South African, Botswanan and Romanian artifacts
2014
- Influence of pre-Andean crustal structure on Cenozoic thrust belt kinematics and shortening magnitude: Northwestern Argentina
2013
- Shear heating not a cause of inverted metamorphism
2013
- Peri-Gondwanan terranes in the Romanian Carpathians: A review of their spatial distribution, origin, provenance, and evolution
2013
- Mantle-drip magmatism beneath the Altiplano-Puna plateau, central Andes
2013
- The evolution of a key segment in the europe-adria collision: The fruška gora of northern serbia
2013
- The Early Andean subduction system as an analog to island arcs: Evidence from across-arc geochemical variations in northern Chile
2013
- Dust and temperature influences on glaciofluvial sediment deposition in southwestern Tibet during the last millennium
2013
- Geological, petrological and geochemical evidence for progressive construction of an Arc crustal section, sierra de valle fértil, famatinian Arc, Argentina
2012
- Detrital zircon and isotopic constraints on the crustal architecture and tectonic evolution of the northeastern Pamir
2012
- Gobi-Tianshan connections: Field observations and isotopes from an early Permian arc complex in southern mongolia
2012
- Detrital zircon U-Pb ages of metasedimentary rocks from Sierra de Valle Fértil: Entrapment of Middle and Late Cambrian marine successions in the deep roots of the Early Ordovician Famatinian arc
2012
- Late cretaceous gravitational collapse of the southern sierra nevada batholith, California
2012
- Peri-Amazonian, Avalonian-type and Ganderian-type terranes in the South Carpathians, Romania: The Danubian domain basement
2011
- Stratigraphy, geochronology, and geochemistry of the Laramide magmatic arc in north-central Sonora, Mexico
2011
- K-Ca ages of authigenic sediments: Examples from Paleozoic glauconite and applications to low-temperature thermochronometry
2011
- Peri-Amazonian provenance of the Central Dobrogea terrane (Romania) attested by U/Pb detrital zircon age patterns
2011
- Fingerprinting orogenic delamination
2011
- Geochemical evidence of a near-surface history for source rocks of the central Coast Mountains Batholith, British Columbia
2011
- Avalonian and Cadomian terranes in North Dobrogea, Romania
2010
- The anatomy of a Gondwanan terrane: The Neoproterozoic-Ordovician basement of the pre-Alpine Sebeş-Lotru composite terrane (South Carpathians, Romania)
2010
- Late cambrian-ordovician northeastern gondwanan terranes in the basement of the Apuseni Mountains, Romania
2010
- Role of extrusion of the Rand and Sierra de Salinas schists in Late Cretaceous extension and rotation of the southern Sierra Nevada and vicinity
2010
- Lithospheric mantle duplex beneath the central Mojave Desert revealed by xenoliths from Dish Hill, California
2009
- Generation of tonalitic and dioritic magmas by coupled partial melting of gabbroic and metasedimentary rocks within the deep crust of the Famatinian magmatic arc, Argentina
2009
- Late Cambrian-Early Ordovician Gondwanan terranes in the Romanian Carpathians: A zircon U-Pb provenance study
2009
- Unroofing history of Alabama and Poverty Hills basement blocks, Owens Valley, California, from apatite (U-Th)/He thermochronology
2009
- Tectonic underplating of trench sediments beneath magmatic arcs: The central California example
2009
- Chronology of pluton emplacement and regional deformation in the southern Sierra Nevada batholith, California
2008
- Temporal-compositional trends over short and long time-scales in basalts of the Big Pine Volcanic Field, California
2008
- Exhumation of ultrahigh-pressure rocks beneath the Hornelen segment of the Nordfjord-Sogn Detachment Zone, western Norway
2007
- Similarities between Archean high MgO eclogites and Phanerozoic arc-eclogite cumulates and the role of arcs in Archean continent formation
2007
- A geologic window into a subduction megathrust
2007
- High temperatures and inverted metamorphism in the schist of Sierra de Salinas, California
2006
- Cenozoic exhumation of the northern Sierra Nevada, California, from (U-Th)/He thermochronology
2006
- The distribution of radiogenic heat production as a function of depth in the Sierra Nevada Batholith, California
2006
- Geochemical characteristics of crustal anatexis during the formation of migmatite at the Southern Sierra Nevada, California
2005
- Near-ultrahigh pressure processing of continental crust: Miocene crustal xenoliths from the Pamir
2005
- Net dextral slip, Neogene San Gregorio-Hosgri fault zone, coastal California: Geologic evidence and tectonic implications
2005
- U-Pb zircon and Re-Os molybdenite geochronology from La Caridad porphyry copper deposit: Insights for the duration of magmatism and mineralization in the Nacozari District, Sonora, Mexico
2005
- Subducted carbonates, metasomatism of mantle wedges, and possible connections to diamond formation: An example from California
2005
- Discrete ultrahigh-pressure domains in the Western Gneiss Region, Norway: Implications for formation and exhumation
2005
- Anomalous isotopes and trace element zoning in plagioclase peridotite xenoliths of Oahu (Hawaii): Implications for the Hawaiian plume
2003
- Can in situ measurements of mantle electrical conductivity be used to infer properties of partial melts?
2003
- Late cenozoic denudation and uplift rates in the Santa Lucia Mountains, California
2003
- Production and loss of high-density batholithic root, southern Sierra Nevada, California
2003
- Conditions and timing of high-pressure Variscan metamorphism in the South Carpathians, Romania
2003
- Constraints on the bulk composition and root foundering rates of continental arcs: A California arc perspective
2002
- The California arc: Thick granitic batholiths, eclogitic residues, lithospheric-scale thrusting, and magmatic flare-ups
2001
- Enhanced mantle conductivity from sulfide minerals, southern Sierra Nevada, California
2000
- Experimental determination of compositional dependence of hydrous silicate melts on sulfate solubility
1999
- Crustal recycling beneath continental arcs: Silica-rich glass inclusions in ultramafic xenoliths from the Sierra Nevada, California
1998
- A case for delamination of the deep batholithic crust beneath the Sierra Nevada, California
1998
- The age and origin of a thick mafic-ultramafic keel from beneath the Sierra Nevada batholith
1998
- Buoyancy sources for a large, unrooted mountain range, the Sierra Nevada, California: Evidence from xenolith thermobarometry
1996
- Origin of high mountains in the continents: The Southern Sierra Nevada
1996
- Project combines seismic and magnetotelluric surveying to address the Sierran root question
1995
- Sulfur variations in glasses from volcanic rocks: effect of melt composition on sulfur solubility
1994