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Sam Johnstone
Sam Johnstone
Research Geologist, US Geological Survey
Verified email at usgs.gov - Homepage
Title
Cited by
Cited by
Year
Understanding the geologic evolution of Northern Tibetan Plateau with multiple thermochronometers
G Zhuang, SA Johnstone, J Hourigan, B Ritts, A Robinson, ER Sobel
Gondwana Research 58, 195-210, 2018
1432018
The grass is not always greener on the other side: Seasonal reversal of vegetation greenness in aspect‐driven semiarid ecosystems
N Kumari, PM Saco, JF Rodriguez, SA Johnstone, A Srivastava, KP Chun, ...
Geophysical Research Letters 47 (15), e2020GL088918, 2020
832020
Sediment unmixing using detrital geochronology
GR Sharman, SA Johnstone
Earth and Planetary Science Letters 477, 183-194, 2017
672017
Earth’s topographic relief potentially limited by an upper bound on channel steepness
GE Hilley, S Porder, F Aron, CW Baden, SA Johnstone, F Liu, R Sare, ...
Nature Geoscience 12 (10), 828-832, 2019
482019
Lithologic control on the form of soil-mantled hillslopes
SA Johnstone, GE Hilley
Geology 43 (1), 83-86, 2015
472015
Controls on submarine channel-modifying processes identified through morphometric scaling relationships
LE Shumaker, ZR Jobe, SA Johnstone, LA Pettinga, D Cai, JD Moody
Geosphere 14 (5), 2171-2187, 2018
462018
Dilution and propagation of provenance trends in sand and mud: Geochemistry and detrital zircon geochronology of modern sediment from central California (USA)
MA Malkowski, GR Sharman, SA Johnstone, MJ Grove, DL Kimbrough, ...
American Journal of Science 319 (10), 846-902, 2019
452019
LA-ICP-MS depth profile analysis of apatite: Protocol and implications for (U–Th)/He thermochronometry
S Johnstone, J Hourigan, C Gallagher
Geochimica et Cosmochimica Acta 109, 143-161, 2013
412013
A stratigraphic approach to inferring depositional ages from detrital geochronology data
SA Johnstone, TM Schwartz, CS Holm-Denoma
Frontiers in Earth Science 7, 57, 2019
372019
Field evidence for the control of grain size and sediment supply on steady‐state bedrock river channel slopes in a tectonically active setting
NJ Finnegan, RA Klier, S Johnstone, AM Pfeiffer, K Johnson
Earth Surface Processes and Landforms 42 (14), 2338-2349, 2017
282017
Detrital zircon record of magmatism and sediment dispersal across the North American Cordilleran arc system (28–48° N)
TM Schwartz, KD Surpless, JP Colgan, SA Johnstone, CS Holm-Denoma
Earth-Science Reviews 220, 103734, 2021
272021
Soil development over mud-rich rocks produces landscape-scale erosional instabilities in the northern Gabilan Mesa, California
SA Johnstone, KD Chadwick, M Frias, G Tagliaro, GE Hilley
Bulletin 129 (9-10), 1266-1279, 2017
132017
Detrital signals of coastal erosion and fluvial sediment supply during glacio-eustatic sea-level rise, Southern California, USA
GR Sharman, JA Covault, DF Stockli, ZT Sickmann, MA Malkowski, ...
Geology 49 (12), 1501-1505, 2021
122021
Continental shelves as detrital mixers: U–Pb and Lu–Hf detrital zircon provenance of the Pleistocene–Holocene Bering Sea and its margins
MA Malkowski, SA Johnstone, GR Sharman, CJ White, DS Scheirer, ...
The Depositional Record 8 (3), 1008-1030, 2022
112022
Timing of Cenozoic extension in the southern Stillwater Range and Dixie Valley, Nevada
JP Colgan, SA Johnstone, DL Shuster
Tectonics 39 (3), e2019TC005757, 2020
102020
A supervolcano and its sidekicks: a 100 ka eruptive chronology of the Fish Canyon Tuff and associated units of the La Garita magmatic system, Colorado, USA
LE Morgan, SA Johnstone, AK Gilmer, MA Cosca, RA Thompson
Geology 47 (5), 453-456, 2019
102019
Establishing chronologies for alluvial-fan sequences with analysis of high-resolution topographic data: San Luis Valley, Colorado, USA
SA Johnstone, AM Hudson, S Nicovich, CA Ruleman, RM Sare, ...
Geosphere 14 (6), 2487-2504, 2018
102018
Interpretation of low‐temperature thermochronometer ages from tilted normal fault blocks
SA Johnstone, JP Colgan
Tectonics 37 (10), 3647-3667, 2018
102018
Weak bedrock allows north-south elongation of channels in semi-arid landscapes
SA Johnstone, NJ Finnegan, GE Hilley
Earth and Planetary Science Letters 478, 150-158, 2017
92017
Earth’s topographic relief potentially limited by an upper bound on channel steepness, Nat. Geosci., 12, 828–832
GE Hilley, S Porder, F Aron, CW Baden, SA Johnstone, F Liu, R Sare, ...
82019
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