Igneous Structures and Field Relationships - Faculty web pages
Igneous Structures and Field Relationships - Faculty web pages
Igneous Structures and Field Relationships - Faculty web pages
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Figure 4-6. 4 a. Maar: : Hole-in<br />
in-the-Ground, Oregon (upper courtesy of<br />
USGS, lower my own). b. Tuff ring: : Diamond Head, Oahu, Hawaii<br />
(courtesy of Michael Garcia). c. Scoria cone, Surtsey, , Icel<strong>and</strong>, 1996<br />
(© courtesy Bob <strong>and</strong> Barbara Decker).<br />
a<br />
b<br />
c