Three-dimensional crustal structure of the Mendocino triple junction region from local earthquake travel times

D. Verdonck, G. Zandt

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

The large-scale, three-dimensional geometry of the Mendocino Triple Junction at Cape Mendocino, California, was investigated by inverting nearly 19 000 P wave arrival times from over 1400 local earthquakes to estimate the three-dimensional velocity structure and hypocentral parameters. The evidence is interpreted as tectonic underplating of the Pacific oceanic crust beneath the coastal Franciscan Complex, similar to the situation seismically imaged in central coastal California. This geometry indicates that the westernmost portion of the slab window has been filled by tectonic underplating and crustal thickening, while deep-seated mantle upwelling is confined to an area centered about 75 km north of Clear Lake. -from Authors

Original languageEnglish (US)
Pages (from-to)23,843-23,858
JournalJournal of Geophysical Research
Volume99
Issue numberB12
StatePublished - Jan 1 1994

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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