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Shaking loose; sand volcanoes and Jurassic earthquakes

Christie Rowe
Shaking loose; sand volcanoes and Jurassic earthquakes
Geology (Boulder) (October 2013) 41 (10): 1135-1136


The geometry, velocity, and overpressure conditions required to trigger injections and sand volcano eruptions are increasingly better constrained by recent experiments and numerical models (e.g., Levi et al., 2008, 2011; Rodrigues et al., 2009). Historical compilations of liquefaction around earthquake source areas have shown that earthquakes must be very large or very close in order to trigger sand injection (Fig. 2). Therefore, Loope et al. imply that the Jurassic dune field of present-day Zion National Park was vigorously shaken by repeated earthquake swarms. The interdune pond setting may have been quite transient (in space and time), but more than 800 individual pipes are present, representing an unknown number of earthquake-aftershock sequences. Records like this give an indication of proximal faulting during the middle Jurassic, providing clues to the foreland basin tectonics. In most cases, the forces required are similar to those expected during earthquakes. Loope et al.'s observations, and particularly the quantification of time scale for the development of sand volcano swarms, are a step forward in our ability to read the ancient earthquake record from deformed soft sediments. (Copyright) 2013 Geological Society of America

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 41
Serial Issue: 10
Title: Shaking loose; sand volcanoes and Jurassic earthquakes
Author(s): Rowe, Christie
Affiliation: McGill University, Department of Earth and Planetary Sciences, Montreal, QC, Canada
Pages: 1135-1136
Published: 201310
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 44
Accession Number: 2014-001444
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N37°00'00" - N42°00'00", W114°04'60" - W109°04'60"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201402
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