Page 46 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

29
Boundaries
Plate
of
Types

Subduction
Ss
Basin
Collide
Ocean
During
Asthenosphere
aac
Crusts
{
Closes
Continental
Basin
Ocean
Thick
a)
b)
Mountain Volcanoes intervening oceanic approach as margins Continental zone. a) Development of continental collision 2.18 FIGURE thick continental crusts collide. forms as range mountain Collisional by subduction. b) is consumed lithosphere Chapter 8). (see uplift faulting and isostatic to a combination of thrust High elevations are due including fragments, continental other with E
—. oft), Transform: San Andreas
Cascade Composite and Province types of ontistors
| { l. i Continental Basin three

/
vsatienen’ \ Plateau ae <e%{a ) Canada. All Range Province volcanoes).
Mt Adams oo “gon => Zone ce" . So wife southwestern ridge); Basin and to Cascade ry
Mt St Helens \—_ \ Subduction & o Sse 0 St ates and United (mid-ocean Ridge Fuca subductin Zp ( b ounda: 1 ate
{
Mid-Ocean Ridge de : Ocean Map of Pacific Northwest of the a a) boundaries occur. Divergent: Juan de vergent: Cascadia Subduction Zone

Juan Fuca 2.17 4
FIGURE Cor rt