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L. Sue Beard
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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
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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

Detrital sanidine 40 Ar/ 39 Ar dating confirms <2 Ma age of Crooked Ridge paleoriver and subsequent deep denudation of the southwestern Colorado Plateau Open Access

Matthew T. Heizler, Karl E. Karlstrom, Micael Albonico, Richard Hereford, L. Sue Beard, Steven M. Cather, Laurie J. Crossey, Kurt E. Sundell
Published: 25 February 2021
Geosphere (2021) 17 (2): 438–454.
DOI: https://doi.org/10.1130/GES02319.1
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View PDF for article title, Detrital sanidine 40 Ar/ 39 Ar dating confirms &lt;2 Ma age of Crooked Ridge paleoriver and subsequent deep denudation of the southwestern Colorado Plateau
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Journal Article

Evaluating the Shinumo-Sespe drainage connection: Arguments against the “old” (70–17 Ma) Grand Canyon models for Colorado Plateau drainage evolution Open Access

Karl E. Karlstrom, Carl E. Jacobson, Kurt E. Sundell, Athena Eyster, Ron Blakey, Raymond V. Ingersoll, Jacob A. Mulder, Richard A. Young, L. Sue Beard, Mark E. Holland, David L. Shuster, Carmen Winn, Laura Crossey
Published: 15 October 2020
Geosphere (2020) 16 (6): 1425–1456.
DOI: https://doi.org/10.1130/GES02265.1
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View PDF for article title, Evaluating the Shinumo-Sespe drainage connection: Arguments against the “old” (70–17 Ma) Grand Canyon models for Colorado Plateau drainage evolution
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Journal Article

ERRATUM: Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation Open Access

Jacob O. Thacker, Karl E. Karlstrom, Laura J. Crossey, Ryan S. Crow, Colleen E. Cassidy, L. Sue Beard, John S. Singleton, Evan D. Strickland, Nikki M. Seymour, Michael R. Wyatt
Published: 10 January 2020
Geosphere (2020) 16 (1): 473.
DOI: https://doi.org/10.1130/GES02104e.1
View PDF for article title, ERRATUM: Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation
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Journal Article

Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation Open Access

Jacob O. Thacker, Karl E. Karlstrom, Laura J. Crossey, Ryan S. Crow, Colleen E. Cassidy, L. Sue Beard, John S. Singleton, Evan D. Strickland, Nikki M. Seymour, Michael R. Wyatt
Published: 20 December 2019
Geosphere (2020) 16 (1): 111–135.
DOI: https://doi.org/10.1130/GES02104.1
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View PDF for article title, Post–12 Ma deformation in the lower Colorado River corridor, southwestern USA: Implications for diffuse transtension and the Bouse Formation
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Includes: Supplemental Content
Journal Article

Insights into post-Miocene uplift of the western margin of the Colorado Plateau from the stratigraphic record of the lower Colorado River Open Access

Ryan S. Crow, Keith A. Howard, L. Sue Beard, Philip A. Pearthree, P. Kyle House, Karl E. Karlstrom, Lisa Peters, William McIntosh, Colleen Cassidy, Tracey J. Felger, Debra Block
Published: 16 October 2019
Geosphere (2019) 15 (6): 1826–1845.
DOI: https://doi.org/10.1130/GES02020.1
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View PDF for article title, Insights into post-Miocene uplift of the western margin of the Colorado Plateau from the stratigraphic record of the lower Colorado River
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Includes: Supplemental Content
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

Reevaluation of the Crooked Ridge River—Early Pleistocene (ca. 2 Ma) age and origin of the White Mesa alluvium, northeastern Arizona Open Access

Richard Hereford, L. Sue Beard, William R. Dickinson, Karl E. Karlstrom, Matthew T. Heizler, Laura J. Crossey, Lee Amoroso, P. Kyle House, Mark Pecha
Published: 01 June 2016
Geosphere (2016) 12 (3): 768–789.
DOI: https://doi.org/10.1130/GES01124.1
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View PDF for article title, Reevaluation of the Crooked Ridge River—Early Pleistocene (ca. 2 Ma) age and origin of the White Mesa alluvium, northeastern Arizona
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Includes: Supplemental Content
Journal Article

Introduction: CRevolution 2: Origin and Evolution of the Colorado River System II Open Access

Karl E. Karlstrom, L. Sue Beard, Kyle House, Richard A. Young, Andres Aslan, George Billingsley, Joel Pederson
Published: 01 December 2012
Geosphere (2012) 8 (6): 1170–1176.
DOI: https://doi.org/10.1130/GES00716.1
View PDF for article title, Introduction: CRevolution 2: Origin and Evolution of the Colorado River System II
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