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Ginni Callahan, Markes E. Johnson, Rigoberto Guardado-France and Jorge Ledesma-Vázquez
This project examines the role of hurricane-strength events likely to have exceeded 119 km/h in wind speed that entered the Gulf of California from the open Pacific Ocean during Late Pleistocene and Holocene times to impact the granodiorite shoreline on ...
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Markes E. Johnson, Erlend M. Johnson, Rigoberto Guardado-France and Jorge Ledesma-Vázquez
Previous studies on the role of hurricanes in Mexico?s Gulf of California examined coastal boulder deposits (CBDs) eroded from limestone and rhyolite sea cliffs. Sedimentary and volcanic in origin, these lithotypes are less extensively expressed as rocky...
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Rigoberto Guardado-France, Markes E. Johnson, Jorge Ledesma-Vázquez, Miguel A. Santa Rosa-del Rio and Ángel R. Herrera-Gutiérrez
The 450-m long spit that extends westward from the northwest corner of Isla San Luis Gonzaga is one of the largest and most complex constructions of unconsolidated cobbles and boulders found anywhere in Mexico?s Gulf of California. The material source de...
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Markes E. Johnson, Rigoberto Guardado-France, Erlend M. Johnson and Jorge Ledesma-Vázquez
This work advances research on the role of hurricanes in degrading the rocky coastline within Mexico?s Gulf of California, most commonly formed by widespread igneous rocks. Under evaluation is a distinct coastal boulder bed (CBB) derived from banded rhyo...
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Markes E. Johnson, Jorge Ledesma-Vázquez and Rigoberto Guardado-France
This study reports the first example of major erosion from hurricanes degrading a rocky coastline anywhere around the Gulf of California, although other sources of evidence are well known regarding the effect of inland erosion due to catastrophic rainfal...
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