Page 346 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

colli-
329
rapidly;
actu-
litho-
that
magmatic underplat-
geo-
the
bound-
Moho.
in
magma
and
material
beneath
and
illustrated
the
Exercises
geometry of the
rises
type
to
Moho,
of
depths
asthenosphere
generation
mantle
rock
amount
configurations

topography,
about
of magma and
the
that
the
and
why
magma
necessary
assumptions
age
in
the
and
difference
the
a discussion of the
i)
how
for,
depth
the generation
if:
collision,
it
reasons
is
explain
ridge
your
ridge,
the
the
time.
slowly.
state
mid-ocean
have
the
explain
and
continental
mid-ocean
through
thermal considerations, explain
[Include
to
more
discuss
Draw sketches
boundaries
your answer.
sure
2.7,
rises
a
to change
a
rift zone.
Be
and
Fig.
at
of
at
asthenosphere
generated
ranges.
magma
of,
phases
in
sphere/asthenosphere
Explain
graph
depth
below.
a continental
continue
gradient.
mountain
ending
generate
the
the
be
cross section
rise?
would
Using
the
Calculate
will
thermal
the
ally
sional
To
ii)
Using
ing at
aries
At
a)
b)
10-7
10-6
10-4
10-5

4 =. oe on ee eee meee eee terete Asthenosphere the cold as depressed plate subducting top of the km 150 gradient. rock sedimentary for reasons lat- along 40° N States United of the profiles geophysical and across section Draw a) 10-8 per produced com- Fig. 4.16; ii) from Moho to depth i) information: following the including itude, mantle. b

idagriia contours are the geothermal of geophysical Joules) (in oceanic crust: iii) craton, estimate melt. depth
Volcanic Arc 9 i Temperature from upward borehole: the sequence as well heat of continental completely setting. rift maximum
Foreare zone. migrate a in determine stratified as geological amount crust; ii) ridges. of a will continental the settings.
Accretionary Wedge fluids that Hot temperatures encountered and graph a through flow. giving the estimate continental i) mid-ocean at high characteristic granite melt; ii) a in crust discuss (b), and two of the each
Trench AS region. foreare vs. depth drilled was heat the setting, 10.6, Fig. of: volumes so is flow gradient to begin will for granitic (a) from at expect
Flow x Temperature contours and heat flow profile for a subduction the volcanic arc. 171°C 35.7°C 57.0°C 81.0°C 98.9°C 142.3°C 190.9°C well tectonic in values total heat granite results might
Heat in the following temperature the and basalt, calculate the interpretation. the why geothermal (a), but one
Crust flow flow at the m m m m m m a Assuming Interpret the by i) on
10 Oceanic heat low heat Given 582 149m 1951 2666 3262 4843 6397 Plot your From year Explain Fora where: Repeat Based quakes
Chapter to high EXERCISES 10-1 a) =~ b) ~ c a) 10-2 b) =~ a) 10-3 a_~ ¢
os
b
Water 10.19 slab subducts, leading
328 magma and
600° FIGURE produce 3