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Courses
- GTGeochronology and Thermochronology
- EEOAEvolution of the Earth, Ocean, and Atmosphere
- PGPhysical Geology
- IGIntroduction to Geochemistry
- GDSGeological Disasters and Society
Grants
- Collaborative Research: Evolution of Subsurface Microbe-Rock-Fluid Systems
Co-Investigator (COI)
2021
$1.2M
Active - A Next-Generation Nanoscale Secondary Ion Mass Spectrometer for the Analysis of Planetary Materials
Co-Investigator (COI)
2020
$2.4M
Active - MRI: Acquisition of a Noble Gas Multi-Collector Mass Spectrometer for Geochronology and Geochemistry Research
Co-Investigator (COI)
2018
$1.1M
- Evolution of Crustal Paleofluid Flow Systems
Principal Investigator (PI)
2017
$1.0M
- Collaborative Research: East Antarctic Glacial Landscape Evolution (EAGLE): A Study Using Combined Thermochronology, Geochronology and Provenance Analysis
Co-Investigator (COI)
2016
$562.5K
- Ancient Waters and Secondary Minerals on the Roof of the World: Paleogeography and 50 Million Years of Ground Water Flow and Erosion in Southern Tibet
Co-Investigator (COI)
2015
$140.6K
- San Andreas Fault in Southern California (SAFSOC)
Principal Investigator (PI)
2015
$20.7K
- Modeling Geoscience-Complex System Related Problems
Principal Investigator (PI)
2015
$11.5K
- Collaborative Research: Development of Hematite (U-Th)/He Chronology to Directly Date Fault Slip and Ancient Seismicity
Principal Investigator (PI)
2014
$200.2K
- Collaborative Research: Damage Defects and Diffusion of Noble Gases in Minerals: He in Zircon as a Model System
Principal Investigator (PI)
2014
$163.6K
Books
- Geochronology and Thermochronology
2017
News
- A Life Less Obvious: Study Sheds Light on the Evolution of Underground Microbes
2021
- NSF Awards UArizona-Led Team $2.8M to Study Earth's Mysterious Subsurface
2021
- UA Geoscientists Take a Crack at Paradox Basin's Mysteries
2017
- UA Creates Accessible, Study-Abroad Geosciences Course
2015
- UA Geoscientist Awarded Packard Fellowship
2015
- The Making of Antarctica’s Hidden Fjords
2013
- Glaciers Help High-Latitude Mountains Grow Taller
2010
Publications (135)
Recent
- span style= font-size:11pt; Pliocene subsurface fluid flow driven by rapid erosional exhumation of the Colorado Plateau /span
2023
- span style= font-size:11pt; Burial and denudation alter microbial life at the bottom of the kilometers-deep Critical Zone /span
2022
- Hydrogeochemical evolution of formation waters responsible for sandstone bleaching and ore mineralization in the Paradox Basin, Colorado Plateau, USA
2022
- Krypton-81 dating constrains timing of deep groundwater flow activation
2022
- Hydrogeochemical evolution of formation waters responsible for sandstone bleaching and ore mineralization in the Paradox Basin
2021
- Thermochronometric and textural evidence for seismicity via asperity flash heating on exhumed hematite fault mirrors, Wasatch fault zone, UT, USA
2017
- Thermochronology of sandstone-hosted secondary Fe- and Mn-oxides near Moab, Utah: Record of paleo–fluid flow along a fault
2017
- Zircon, titanite, and apatite (U-Th)/He ages and age-eU correlations from the Fennoscandian Shield, southern Sweden
2017
- Reconciling regional continuity with local variability in structure, uplift and exhumation of the Timor orogen
2017
- Sandstones and Utah's canyon country: Deposition, diagenesis, exhumation, and landscape evolution
2016
- Long-term tectonothermal history of Laramide basement from zircon--He age-eU correlations
2016
- Rapid Pliocene--Pleistocene erosion of the central Colorado Plateau documented by apatite thermochronology from the Henry Mountains
2016
- Isotope dilution analysis of Ca and Zr in apatite and zircon (U-Th)/He chronometry
2016
- Zircon M127--A Homogeneous Reference Material for SIMS U--Pb Geochronology Combined with Hafnium, Oxygen and, Potentially, Lithium Isotope Analysis
2016
- Pulsed exhumation of interior eastern Tibet: Implications for relief generation mechanisms and the origin of high-elevation planation surfaces
2016
- Record of paleofluid circulation in faults revealed by hematite (U-Th)/He and apatite fission-track dating: An example from Gower Peninsula fault fissures, Wales
2016
- Billion year thermal histories constrained by zircon (U-Th)/He age-eU correlations: Examples from the Laramide and Sevier Provinces of the western US
2016
- Linking hematite (U-Th)/He dating with the microtextural record of seismicity in the Wasatch fault damage zone, Utah, USA
2015
- Sevier belt exhumation in central Utah constrained from complex zircon (U-Th)/He data sets: Radiation damage and He inheritance effects on partially reset detrital zircons
2015
- Synorogenic extension localized by upper-crustal thickening: An example from the Late Cretaceous Nevadaplano
2015
- Formation ages and thermal histories of fracture-filling hematite and Mn-oxide in Precambrian basement from (U-Th)/He dating and 4 He/3 He diffusion experiments
2015
- Thermochronologic evaluation of the Arabia-Anatolia collision: new results from Apatite (U-Th) He and Fission Track
2015
- Effects of inherited cores and magmatic overgrowths on zircon (U-Th)/He ages and age-eU trends from Greater Himalayan sequence rocks, Mount Everest region, Tibet
2015
- Secondary Mineralization in Bedrock: Diagenesis, Cementation, Hydrothermal Precipitation, and the Interpretation of Paleofluid Flow II Posters
2015
- Low-temperature thermochronologic trends across the central Andes, 21 S--28 S
2015
- Resolving spatial heterogeneities in exhumation and surface uplift in Timor-Leste: constraints on deformation processes in young orogens
2014
- Provenance of the Eocene Soebi Blanco formation, Bonaire, Leeward Antilles: Correlations with post-Eocene tectonic evolution of northern South America
2014
- Detrital zircon U-Pb-He double dating: A method of quantifying long-and short-term exhumation rates in collisional orogens
2014
- (U-Th)/He geochronology and chemical compositions of diagenetic cement, concretions, and fracture-filling oxide minerals in Mesozoic sandstones of the Colorado Plateau
2014
- A comparison of detrital U--Pb zircon, sup 40 /sup Ar/ sup 39 /sup Ar hornblende, sup 40 /sup Ar/ sup 39 /sup Ar biotite ages in marine sediments off East Antarctica: Implications for the geology of subglacial terrains and provenance studies
2014
- Variable exhumation rates and variable displacement rates: Documenting recent slowing of Himalayan shortening in western Bhutan
2014
- Topographic relief driven by variations in surface rock density
2014
- Interpreting date--eU correlations in zircon (U-Th)/He datasets: A case study from the Longmen Shan, China
2014
- The effect of inherited paleotopography on exhumation of the Central Andes of NW Argentina (vol 126, pg 66, 2014)
2014
- Low-temperature thermochronologic trends across the central Andes 21-28° S
2014
- Low-temperature thermochronologic signature of range-divide migration and breaching in the North Cascades
2014
- Hematite and Mn oxide (U-Th)/He dates from the Buckskin-Rawhide detachment system, western Arizona: constraining the timing of mineralization and gaining insights into hematite (U-Th)/He systematics
2014
- Sevier-belt exhumation in central Utah constrained from complex zircon (U-Th)/He datasets: Radiation damage and He inheritance effects on partially reset detrital zircons
2014
- Low-temperature thermochronologic record of Eocene migmatite dome emplacement and late Cenozoic landscape development, Shuswap core complex, British Columbia
2014
- Effects of U-Th-rich grain boundary phases on apatite helium ages
2014
- (U-Th)/He ages of phosphates from St. Séverin LL6 chondrite
2013
- Geometric analysis of radiation damage connectivity in zircon, and its implications for helium diffusion
2013
- Preservation of contrasting geothermal gradients across the Caribbean-North America plate boundary (Motagua Fault, Guatemala)
2013
- New constraints on the provenance of the ANDRILL AND-2A succession (western Ross Sea, Antarctica) from apatite triple dating
2012
- From crucible to graben in 2.3 Ma: A high-resolution geochronological study of porphyry life cycles, boyongan-bayugo copper-gold deposits, Philippines
2012
- Generation of forsteritic olivine (fo sub 99·8 /sub ) by subsolidus oxidation in basaltic flows
2012
- Empirical evidence of climate's role in Rocky Mountain landscape evolution
2012
- Variable shortening rates in the eastern Himalayan thrust belt, Bhutan: Insights from multiple thermochronologic and geochronologic data sets tied to kinematic reconstructions
2012
- The cooling history and the depth of detachment faulting at the Atlantis Massif oceanic core complex
2012
- Paleotopography in the western U.S. Cordillera
2012
- Clinker geochronology, the first glacial maximum, and landscape evolution in the northern Rockies
2011
- Thermochronology of the Talkeetna intraoceanic arc of Alaska: Ar/Ar, U-Th/He, Sm-Nd, and Lu-Hf dating
2011
- Cooling rates and the depth of detachment faulting at oceanic core complexes: Evidence from zircon Pb/U and (U-Th)/He ages
2011
- Transient cenozoic tectonic stages in the southern margin of the caribbean plate: U-Th/He thermochronological constraints from eocene plutonic rocks in the Santa Marta massif and Serranía de jarara, northern Colombia
2011
- A precursor of the North Anatolian Fault in the Marmara Sea region
2010
- The exhumation evolution of the Micang Shan-Hannan uplift since Cretaceous: Evidence from apatite (U-Th)/He dating
2010
- Glaciation as a destructive and constructive control on mountain building
2010
- Extremely low long-term erosion rates around the Gamburtsev Mountains in interior East Antarctica
2010
- Slab window migration and terrane accretion preserved by low-temperature thermochronology of a magmatic arc, northern Antarctic Peninsula
2010
- Regional incision of the eastern margin of the Tibetan Plateau
2010
- Thermochronologic evidence for orogen-parallel variability in wedge kinematics during extending convergent orogenesis of the northern Apennines, Italy
2010
- Thermochronology and landscape evolution
2009
- Cooling history of atlantis bank oceanic core complex: Evidence for hydrothermal activity 2.6 Ma off axis
2009
- Climate control on quaternary coal fires and landscape evolution, powder river basin, Wyoming and Montana
2009
- Eocene arc-continent collision and crustal consolidation in Kamchatka, Russian Far East
2009
- Application of the (U-Th)/He thermochronometry to the tectono-thermal evolution of sedimentary basin - A case history of well KQ1 in the Tarim basin
2009
- Eocene Tibetan plateau remnants preserved in the northwest Himalaya
2009
- Nonmonotonic thermal histories and contrasting kinetics of multiple thermochronometers
2009
- Thermochronological evidence for Mio-Pliocene late orogenic extension in the north-eastern Albanides (Albania)
2008
- New insights into crustal contributions to large-volume rhyolite generation in the mid-Tertiary Sierra Madre Occidental province, Mexico, revealed by U-Pb geochronology
2008
- Two-phase Neogene extension in the northwestern basin and range recorded in a single thermochronology sample
2008
- Zircon M257 - A homogeneous natural reference material for the ion microprobe U-Pb analysis of zircon
2008
- Multimillion year thermal history of a porphyry copper deposit: Application of U-Pb, sup 40 /sup Ar/ sup 39 /sup Ar and (U-Th)/He chronometers, Bajo de la Alumbrera copper-gold deposit, Argentina
2008
- Uplift of the western margin of the Andean plateau revealed from canyon incision history, southern Peru
2007
- Jurassic-to-present thermal history of the central High Atlas (Morocco) assessed by low-temperature thermochronology
2007
- Thermochronologic approaches to paleotopography
2007
- High-temperature Mars-to-Earth transfer of meteorite ALH84001
2007
- Wildfire thermochronology and the fate and transport of apatite in hillslope and fluvial environments
2007
- Dating young basalt eruptions by (U-Th)/He on xenolithic zircons
2007
- Conodont (U-Th)/He thermochronology: Initial results, potential, and problems
2007
- The late Quaternary Diego Hernandez Formation, Tenerife: Volcanology of a complex cycle of voluminous explosive phonolitic eruptions
2007
- Thermochronologic evidence for the exhumational history of the Alpi Apuane metamorphic core complex, northern Apennines, Italy
2007
- Cenozoic tectonic evolution of the basin and range province in northwestern Nevada
2006
- (U-Th)/He dating of volcanic phenocrysts with high-U-Th inclusions, Jemez Volcanic Field, New Mexico
2006
- Low temperature thermochronology of the southern East Greenland continental margin: Evidence from apatite (U-Th)/He and fission track analysis and implications for intermethod calibration
2006
- Low long-term erosion rates and extreme continental stability documented by ancient (U-Th)/He dates
2006
- Laser microprobe (U-Th)/He geochronology
2006
- Using thermochronology to understand orogenic erosion
2006
- Late mesozoic and cenozoic thermotectonic evolution along a transect from the north China craton through the Qinling orogen into the Yangtze craton, central China
2006
- (U-Th)/(He-Pb) double dating of detrital zircons
2005
- Past, present, and future of thermochronology
2005
- Zircon (U-TH)/He thermochronometry
2005
- Implications for timing of Andean uplift from thermal resetting of radiation-damaged zircon in the Cordillera Huayhuash, northern Peru
2005
- Preface
2005
- He-Pb double dating of detrital zircons from the Ganges and Indus Rivers: Implication for quantifying sediment recycling and provenance studies
2005
- Apatite-fission-track geochronology and its tectonic correlation in the Dabieshan orogen, central China
2005
- U-Th zonation-dependent alpha-ejection in (U-Th)/He chronometry
2005
- Relief evolution in northern Corsica (western Mediterranean): Constraints on uplift and erosion on long-term and short-term timescales
2005
- Incomplete retention of radiation damage in zircon from Sri Lanka
2004
- Long-term glacial erosion of active mountain belts: Example of the Chugach- St. Elias Range, Alaska
2004
- Origin of the Blue Ridge escarpment along the passive margin of Eastern North America
2004
- Length scales of mantle heterogeneities and their relationship to ocean island basalt geochemistry
2004
- Age and temperature of shock metamorphism of Martian meteorite Los Angeles from (U-Th)/He thermochronometry
2004
- Timing of syenite intrusions on the eastern slope of the Sredinnyi Range, Kamchatka: Rate of accretionary structure exhumation
2004
- Zircon (U-Th)/He thermochronometry: He diffusion and comparisons with sup 40 /sup Ar/ sup 39 /sup Ar dating
2004
- Pliocene and Pleistocene exhumation and uplift of two key areas of the Northern Apennines
2003
- Coupled spatial variations in precipitation and long-term erosion rates across the Washington Cascades
2003
- Timing constraints of gold mineralization along the Carlin trend utilizing apatite fission-track, sup 40 /sup Ar/ sup 39 /sup Ar, and apatite (U-Th)/He methods
2003
- Late Cretaceous-Cenozoic exhumation history of Tiantangzhai region of Dabieshan Orogen: Constraints from (U-Th)/He and fission track analysis
2003
- Post-orogenic evolution of the Dabie-Shan, eastern China, from (U-Th)/He and fission-track thermochronology
2003
- Influence of wildfires on apatite and zircon (U-Th)/He ages
2003
- He diffusion and (U-Th)/He thermochronometry of zircon: Initial results from Fish Canyon Tuff and Gold Butte
2002
- Late Cenozoic evolution of the eastern margin of the Tibetan Plateau: Inferences from sup 40 /sup Ar/ sup 39 /sup Ar and (U-th)/He thermochronology
2002
- Late Miocene exhumation and uplift of the Washington Cascade Range
2002
- Zircon (U-Th)/He thermochronological constraints on Cretaceous thermal extension of Dabieshan orogen
2002
- Geochronological constraints on 140-85 Ma thermal doming extension in the Dabie orogen, central China
2002
- Editorial: AGU online journals: An open letter to librarians
2002
- Laramide exhumation of the Bighorn Mountains, Wyoming: An apatite (U-Th)/He thermochronology study
2002
- Influence of crystal size on apatite (U-Th)/He thermochronology: An example from the Bighorn Mountains, Wyoming
2001
- Near-field transpressive deformation along the San Andreas fault zone in southern California, based on exhumation constrained by (U-Th)/He dating
2001
- Geochronological Constraints on the Post-Collisional (150-75 Ma) Thermal Extension in the Dabieshan Orogen, Central China
2001
- Helium and argon thermochronometry of the Gold Butte block, south Virgin Mountains, Nevada
2000
- Young basalts of the central Washington Cascades, flux melting of the mantle, and trace element signatures of primary arc magmas
2000
- Generation of Hawaiian post-erosional lavas by melting of a mixed lherzolite/pyroxenite source
2000
- Overlapping volcanoes: The origin of Hilo Ridge, Hawaii
2000
- Structural and petrologic evolution of the Lihue basin and eastern Kauai, Hawaii
1999
- Helium diffusion and (U-Th)/He thermochronometry of titanite
1999
- An apparatus for high-precision helium diffusion measurements from minerals
1999
- Reactive melt transport in the mantle and geochemical signatures of mantle-derived magmas
1998
- Temporal-compositional-isotopic trends in rejuvenated-stage magmas of Kauai, Hawaii, and implications for mantle melting processes
1998
- Evidence for two shield volcanoes exposed on the island of Kauai, Hawaii
1997
- Evidence for multiple mechanisms of crustal contamination of magma from compositionally zoned plutons and associated ultramafic intrusions of the Alaska Range
1996
- Assimilation of felsic crust by basaltic magma: thermal limits and extents of crustal contamination of mantle-derived magmas
1995
- Shocked quartz at the Triassic-Jurassic boundary in Italy
1992