Question
2
1/1pts
What
is
this
(N
34.64914
W
111.75221)
karst
landform,
how
did
it
form,
and
what
is
the
elevation
difference
between
the
water
in
this
landform
and
the
stream
immediately
to
the
east?
This
landform
is
a
caldera
formed
by
the
collapse
of
the
volcanic
basalt
lava
upon
evaluation
of
the
lava.
The
current
lake
surface
is
the
same
elevation
as
the
river
to
the
east.
This
landform
is
a
sinkhole
formed
by
faulting
dropping
down
the
basin.
The
river
to
the
east
is
a
few
meters
lower
than
the
lake
in
the
sinkhole.
This
landform
is
a
collapse
doline
formed
by
the
dissolution
of
rock
(limestone)
in
a
cavern.
Then,
when
the
cavern
ceiling
collapsed
this
sinkhole
formed.
The
elevation
of
the
river
to
the
east
is
a
few
meters
lower
than
the
lake.
This
landform
is
a
blind
valley
formed
by
fluvial
processes
eroding
the
depressions,
and
the
river
to
the
east
is
about
10
meters
higher
than
the
lake
surface.
This
location
is
Montezuma's
Well.
It
is
a
fantastic
place
to
explore:
https://www.nps.gov/moca/planyourvisit/exploring-montezuma-well.htm
&
It
is
also
a
great
picnic
spot
about
half-way
between
Phoenix
and
Flagstaff.
