Deep Structure of Magmatic Arcs

An abiding interest of mine is the deep structure of magmatic arcs -- especially island arcs.

Costa Rican Magmatic Arc

  • Offshore Campaign Map, 2008 
  • La_Nacion_article

Aleutian Arc

The Aleutian island arc is a terrific place to study the processes that create arc crust, due to its relatively simple tectonic setting.  


I first got involved in studying the orign of arc crust through a 1994 marine seismic survey I participated in while I still was at WHOI, together with a number of other PI's (Sue McGeary, John Diebold, Nathan Bangs, and Simon Klemperer).  The survey consisted of seismic reflection data acquired by the R/V Ewing and wide-angle seismic data acquired on ocean-bottom seismic instruments (which our group deployed from the R/V Alpha Helix) and land instruments on the islands deployed by the Stanford group.

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