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Unveiling North America's Geological Wonders

Delve into Earth's secrets with the EarthScope mission, exploring the continent's structure, evolution, and seismic properties. Funded by the NSF, operated with partners like USGS, UNAVCO, and Stanford University.

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Unveiling North America's Geological Wonders

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  1. EarthScope: Revealing Earth's Secrets

  2. Scientific Mission Explore the structure and evolution of the North American Continent, and the physical properties that control earthquakes and volcanoes.

  3. Acknowledgements EarthScopeis funded by the National Science Foundation and conducted in partnership with the US Geological Survey. EarthScope is being constructed, operated, and maintained as a collaborative effort with UNAVCO, Inc., IRIS, and Stanford University, with contributions from NASA and several other national and international organizations.

  4. Observing Network

  5. What is a Continent? Archean crust relative to the S-wave tomography Are seismic velocities tracking primarily the temperature or composition of the continental lithosphere? Goes and van der Lee (2001), van der Lee et al. (2002)

  6. Episodic Tremor and Slip Cascadia Subduction Zone

  7. Episodic Tremor and Slip Cascadia Subduction Zone Rogers & Dragert (2003)

  8. Seismic Array Observations of Non-Volcanic Tremor

  9. Magnitude 2.8 – July 6, 2005 July 6, 2005 San Andreas fault - M 2.8 6km hypocentral dist.

  10. Strainmeter record

  11. SAOD Fault Contact at 10,063 ft Metasediment Clay Gouge Granodiorite

  12. SAFOD Core Extracted 10,025-10,034 ft KB

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