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Paul J. Umhoefer
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Journal Article

Oligocene–Miocene development and evolution of the south Dome Rock Mountains basin, lower Colorado River corridor, Arizona, USA Open Access

Timothy A. Brickey, Paul J. Umhoefer, Scott E.K. Bennett, Christine Regalla, Nancy Riggs, Skyler Mavor
Published: 29 April 2025
Geosphere (2025)
DOI: https://doi.org/10.1130/GES02754.1
View PDF for article title, Oligocene–Miocene development and evolution of the south Dome Rock Mountains basin, lower Colorado River corridor, Arizona, USA
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Early Publication
Journal Article

Evolution of Miocene normal and dextral faulting in the lower Colorado River region near Blythe, California, USA Open Access

Skyler P. Mavor, Scott E.K. Bennett, Ryan S. Crow, John S. Singleton, Victoria Langenheim, Daniel Stockli, Mark Stelten, Timothy A. Brickey, Sr., Paul J. Umhoefer, L. Sue Beard
Published: 25 August 2023
Geosphere (2023) 19 (5): 1180–1209.
DOI: https://doi.org/10.1130/GES02608.1
FIGURES | View All (16)
View PDF for article title, Evolution of Miocene normal and dextral faulting in the lower Colorado River region near Blythe, California, USA
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Journal Article

Upper-plate response to ridge subduction and oceanic plateau accretion, Washington Cascades and surrounding region: Implications for plate tectonic evolution of the Pacific Northwest (USA and southwestern Canada) in the Paleogene Open Access

Robert B. Miller, Paul J. Umhoefer, Michael P. Eddy, Jeffrey H. Tepper
Published: 06 July 2023
Geosphere (2023) 19 (4): 1157–1179.
DOI: https://doi.org/10.1130/GES02629.1
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View PDF for article title, Upper-plate response to ridge subduction and oceanic plateau accretion, Washington Cascades and surrounding region: Implications for plate tectonic evolution of the Pacific Northwest (USA and southwestern Canada) in the Paleogene
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Journal Article

Middle Miocene faulting and basin evolution during central Basin and Range extension: A detailed record from the upper Horse Spring Formation and red sandstone unit, Lake Mead region, Nevada, USA Open Access

Melissa A. Lamb, Thomas A. Hickson, Paul J. Umhoefer, Zachary W. Anderson, Crystal Pomerleau, Katrina Souders, Lindsey Lee, Nelia Dunbar, William McIntosh
Published: 26 August 2022
Geosphere (2022) 18 (5): 1394–1434.
DOI: https://doi.org/10.1130/GES02463.1
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View PDF for article title, Middle Miocene faulting and basin evolution during central Basin and Range extension: A detailed record from the upper Horse Spring Formation and red sandstone unit, Lake Mead region, Nevada, USA
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Journal Article

Eocene dike orientations across the Washington Cascades in response to a major strike-slip faulting episode and ridge-trench interaction Open Access

Robert B. Miller, Kathleen I. Bryant, Brigid Doran, Michael P. Eddy, Franco P. Raviola, Nicholas Sylva, Paul J. Umhoefer
Published: 03 February 2022
Geosphere (2022) 18 (2): 697–725.
DOI: https://doi.org/10.1130/GES02387.1
FIGURES | View All (13)
View PDF for article title, Eocene dike orientations across the Washington Cascades in response to a major strike-slip faulting episode and ridge-trench interaction
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Journal Article

Cenozoic tectonic evolution of the Ecemiş fault zone and adjacent basins, central Anatolia, Turkey, during the transition from Arabia-Eurasia collision to escape tectonics Open Access

Paul J. Umhoefer, Stuart N. Thomson, Côme Lefebvre, Michael A. Cosca, Christian Teyssier, Donna L. Whitney
Published: 27 October 2020
Geosphere (2020) 16 (6): 1358–1384.
DOI: https://doi.org/10.1130/GES02255.1
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View PDF for article title, Cenozoic tectonic evolution of the Ecemiş fault zone and adjacent basins, central Anatolia, Turkey, during the transition from Arabia-Eurasia collision to escape tectonics
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Journal Article

Provenance and paleogeography of the 25–17 Ma Rainbow Gardens Formation: Evidence for tectonic activity at ca. 19 Ma and internal drainage rather than throughgoing paleorivers on the southwestern Colorado Plateau Open Access

Melissa A. Lamb, L. Sue Beard, Malia Dragos, Andrew D. Hanson, Thomas A. Hickson, Mark Sitton, Paul J. Umhoefer, Karl E. Karlstrom, Nelia Dunbar, William McIntosh
Published: 17 May 2018
Geosphere (2018) 14 (4): 1592–1617.
DOI: https://doi.org/10.1130/GES01127.1
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View PDF for article title, Provenance and paleogeography of the 25–17 Ma Rainbow Gardens Formation: Evidence for tectonic activity at ca. 19 Ma and internal drainage rather than throughgoing paleorivers on the southwestern Colorado Plateau
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Includes: Supplemental Content
Journal Article

Ophiolite gabbro from source to sink: A record of tectonic and surface processes in Central Anatolia Open Access

Molly Radwany, Donna L. Whitney, Gilles Brocard, Paul J. Umhoefer, Christian Teyssier
Published: 09 August 2017
Geosphere (2017) 13 (5): 1329–1358.
DOI: https://doi.org/10.1130/GES01465.1
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View PDF for article title, Ophiolite gabbro from source to sink: A record of tectonic and surface processes in Central Anatolia
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Includes: Supplemental Content
Journal Article

Late Quaternary faulting history of the Carrizal and related faults, La Paz region, Baja California Sur, Mexico Open Access

Paul J. Umhoefer, Sara J. Maloney, Beverly Buchanan, J Ramón Arrowsmith, Genaro Martinez-Gutiérrez, Graham Kent, Neal Driscoll, Alistair Harding, Darrell Kaufman, Tammy Rittenour
Published: 01 June 2014
Geosphere (2014) 10 (3): 476–504.
DOI: https://doi.org/10.1130/GES00924.1
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View PDF for article title, Late Quaternary faulting history of the Carrizal and related faults, La Paz region, Baja California Sur, Mexico
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Journal Article

Middle Miocene to early Pliocene oblique extension in the southern Gulf of California Open Access

Fiona H. Sutherland, Graham M. Kent, Alistair J. Harding, Paul J. Umhoefer, Neal W. Driscoll, Daniel Lizarralde, John M. Fletcher, Gary J. Axen, W. Steven Holbrook, Antonio González-Fernández, Peter Lonsdale
Published: 01 August 2012
Geosphere (2012) 8 (4): 752–770.
DOI: https://doi.org/10.1130/GES00770.1
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View PDF for article title, Middle Miocene to early Pliocene oblique extension in the southern Gulf of California
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