►
Description
Introduction lecture for EOSC 350: Environmental, Geotechnical and Exploration Geophysics I. September 7, 2016. Slides available at: https://github.com/ubcgif/eosc350website/raw/master/assets/0_PhysicalProperties/a_Intro_350.pdf
A
A
Oh
okay,
and
are
you
a
fourth-year
student
to
register
any
oh
yeah?
Soon?
Okay,
Who
am
I
I'm
doc
I'm
a
professor
here
in
geophysics
I'm
director,
but
it's
called
the
get
physical
inversion
facility
I'm
up
in
the
earth
sciences,
building
up
on
the
on
the
fifth
floor
and
here's
my
my
email,
my
background,
it's
really
I
guess
the
last.
A
So
kind
of
want
to
start
this
off
too
by
getting
an
impression
from
the
audience
like
does
anybody
know
like
what
is
geophysics
I
personally
have
had
a
lot
of
experiences
where
you
go
to
a
party
right,
and
you
know
everybody's
in
there
introducing
themselves-
and
somebody
says:
oh
yeah
I'm
a
nurse,
oh
yeah,
that's
so
great
with
nurses,
all-time
love,
nurses
and
somebody
else
says:
oh
yeah
Willie.
You
know
auto
bottom
mechanic
and
yeah.
Oh
yeah,
they're,
so
useful,
right
and
then
I
say
I'm
a
geophysicist.
A
A
That's
that's
perfect.
You
couldn't
believe
how
well
that
fits
in,
because
we've
got
a
group
of
students
here,
working
on
Highland,
Valley,
copper,
okay,
and
we
also
have
people
working
on
SP,
which
stands
for
self
potential,
and
it's
a
technique
that
is
possibly
used
for
dam
safety,
so
BC
Hydro
is
is
interested
in
this
I
have
a
Korean
scientist
who's
spending
a
year
here,
Korea
has
got
70,000
of
these
earth
dams
and
they're,
trying
to
monitor
them,
and
one
of
the
geophysical
techniques
is
self
potential
and
they're
soon.
A
I'd
like
to
introduce
to
you
the
most
important
element
of
this
course,
and
that
is
the
t-80
geophysics
350
of
something
that
a
great
number
of
us
are
very
passionate
about,
because,
as
you'll
see,
geophysics
has
got
a
huge
role
to
play
in
solving
a
whole
bunch
of
problems.
We're
trying
to
develop
this
course
into
a
showcase
course
that
would
be
distributed
worldwide.
A
It's
developed
as
an
open,
we're
developing
it
now
as
an
open
source
resource
on
them
on
the
web,
so
that
it's
material
that
anybody
anywhere
can
can
interact
with
there's
a
number
of
parts
of
this
course
there's
the
lecture
part
where
I
get
to
stand
up
and
say
something,
there's
also
team-based
learning
parts
of
this
course
there's
quizzes,
there's
labs,
we're
developing
interactive
apps
so
that
you
can
explore
the
different
concepts
and
try
to
really
understand.
What's
going
on.
A
This
actually
is
required
a
huge
effort
and
they're
supposed
to
be
here's
the
team.
Technically.
As
far
as
the
university
is
concerned,
we're
allowed
to
have
two
TAS,
that's
not
quite
enough.
So
last
year,
I
thought
we
had
the
A+
team
and
we
did.
These
guys
were
great,
but
this
year
we've
got
the
A
plus
plus
teams,
so
I
just
like
to
introduce
a
couple
of
them.
A
So,
first
of
all,
Dom
Fournier
who's
back
there,
dogs,
PhD
student
and
was
involved
in
the
course
last
year
and
is
sort
of
the
head
ta
this
year,
Tibo
aspic
who's
taking
another
course.
This
dive,
but
he's
the
guy
that
was
working
on
on
Highland,
Valley,
copper,
Patrick,
billables
Patrick's
back.
There
is
PhD
student
with
Eldad
Devin
Corinth,
who
just
finished
his
master's
degree
and
decided
he
needed
to
have
a
break
and
so
he's
out.
A
Hiking
someplace
soggy
hang
over
there
soggies
from
Korea
is
finishing
up
his
PhD
and
then
there's
Lindsey
Higgy
who's
back
there
she's
she's
our
technical
person
here,
as
well
as
knowing
a
lot
about
geophysics,
but
she
is
the
only
reason
that
things
are
kind
of
hooked
up
like
they
are
and
if
you
notice
back
there,
there's
a
webcam
on
a
tripod,
so
we're
taping
live
to
be
screening.
This
is
going
to
YouTube
right
now.
A
It's
on
a
private,
it's
a
private
channel,
but
we're
going
to
you
know,
ask
permission
of
people
and
we
just
have
your
backs.
So
the
only
thing
we,
the
only
thing
that
we
can
see
right
now,
are
your
backs
and
if
you
have
your
laptops
open
and
are
watching
a
movie
just
let
you
know
anyway.
Well
we'll
see
how
all
this
works.
There's
a
number
of
reasons
for
doing
it.
One
is
the
longevity
of
this
information.
A
The
other
is,
as
I
said,
we're
trying
to
make
this
open
source,
and
this
is
potentially,
of
course,
that
you
know
has
got
application.
You
know
you
could
see
this
course
being
presented
all
on
a
whole
bunch
of
places
across
the
world,
and
so,
if
you
have
all
the
resource,
material
and
you've
got
some
guys
sort
of
talking
about
some
slides.
Then
that
might
be
useful.
The
other
thing
that
might
be
useful
for
students
is
that
you
know
if
things
are
captured-
and
you
know
you
get
confused
about-
you
know
material.
A
A
Hydrocarbons
Society
runs
off
of
this
stuff,
but
there's
also
other
things:
geothermal,
energy
and
now
more
and
more-
and
this
is
actually
becoming
one
of
the
most
important
issues-
has
to
do
with
groundwater,
where
it
is
what
the
integrity
of
it
is.
So
you
know
here's
problems.
You
know
you
need
to
somehow
find
where
those
things
are.
That's
resources,
you'll,
get
natural
hazards.
We
have
volcanoes,
go
off
caused
destruction,
tsunamis,
this
picture
from
the
one
in
in
Japan
a
few
years
ago,
and
then
we've
got
earthquakes
which
we
could
continue
to
see.
A
Geotechnical
engineering,
you
know,
especially
in
places
like
British
Columbia,
where
we
got.
You
know
lots
of
mountains.
You
know,
if
you
have
to
you,
know,
dig
tunnels
through
the
mountains
you're
there.
We
have
issues
about
slope,
stability,
just
go
up
the
sea
to
sky
highway
right
and
have
to
worry
about
that.
Then
a
big
problem
that
we're
constantly
faced
with
this.
In
line
safety,
if
you're
you
know
going
down
into
the
earth
and
not
gonna
mine
things
out,
water
is
the
big
issue,
so
you
need
to
figure
out.
A
You
know
where
is
their
water
and
try
to
understand
that
environment
got
environmental
concerns
is
becoming
more
and
more
important,
as
time
goes
on
water
contamination
or
factories,
whatever
just
dumping
sludge
out
into
the
water
which
gradually
gets
through
into
our
water
supply
or
you
could
have
saltwater
intrusion.
This
is
also
becoming
a
bigger
issue.
A
Then
we've
got
zones
of
current
military
conflict
and
past
military
conflict.
Giving
rise
to
you
know
a
whole
bunch
of
bombs
that
are
unexploded,
hence
unexploded
ordnance,
and
need
to
find
those
guys
and
then
we've
also
got
just
storage
either
on
the
surface
or
an
underground.
Probably
most
people
have
heard
of
carbon
sequestration.
Where
you
know,
we've
got
permeable
layers
underneath
here:
you're
gonna
try
to
no
carbon
down
into
there
or
you've
got
aquifer
storage
and
recovery.
A
So
in
times
of
Plenty
you
want
to
just
store
the
water
and
then
the
summer
time
you
know
public
back
going
again,
and
sometimes
he
just
got
nasty
stuff.
You
just
got
industrial
waste
or
nuclear
wastes
and
got
it
somehow
store
that
stuff.
So
that's
a
whole
bunch
of
problems,
and
so
what
maybe
you're
flashing?
Through
your
mind,
is
from
your
own
particular
background,
like
okay,
if
I
was
faced
with
that,
what
can
I
contribute?
A
How
would
I?
How
would
I
help
what
pieces
of
information
would
I
provide,
or
what
would
I
do
in
this
case,
and
the
thing
that
I
wanted
to
kind
of
bring
your
problems
there
to
your
attention
is
that
all
of
these
problems
actually
have
something
in
common
and
the
thing
that
they
have
in
common
is
that
they
require
ways
to
see
into
the
earth
without
direct
sampling.
A
A
So
you
need
to
find
some
way
of
finding.
What's
there
without
direct
sampling
and
effectively
by
definition,
G
physics
is
really
the
the
only
discipline
that's
devoted
to
that
goal.
So
already
I
think
those
pictures
should
spur
your
interest
a
little
bit
with
respect
to
oh,
my
gosh.
This
stuff
could
really
be
quite
useful.
A
So
I,
just
a
couple
of
brief
brief
brief
statements
like
who
uses
geophysics.
Well,
anybody
that
has
got
a
you
know
a
problem
and
ready
to
talk
about
what
kinds
of
problems
that's
connected
with
different
kinds
of
physical
properties
would
use
to
you,
physics
and
they
go
out
with
some
kind
of
instrument,
and
you
know
then
you'd
collect
some
data
and
those
data
might
tell
you
something
all
by
themselves
or
maybe
have
to
do
some
processing
on
it
to
get
to
get
an
image.
But
that's
kind
of
the
idea.
You've
got
a
problem.
A
A
So
what
is
this
course?
We
got
plumb
weeks.
We've
got
a
lot
of
stuff
to
cover.
The
only
thing
that
we
can
do
is
just
kind
of
give
you
an
introduction
to
what
applied
geophysics
is
you
know
you
have
what
kind
of
information
you
might
get
out
and
have
a
look
approach,
a
problem
using
geophysical
they're
confusing
geophysics,
but
the
course
is
not
is
some
kind
of
mathematical
treatment.
That's
really
complicated,
they're,
starting
any
mathematics
course,
but
there's
a
lot
of
thought.
Stop
it
going.
That's
good,
really.
A
The
overall
goal,
I
think
if,
if
this
could
become
should
be
it'd,
be
quite
successful,
is
that
by
the
time
you
leave
this
course
when
faced
with
a
problem,
you'd
have
a
framework
by
which
to
decide.
Okay
is
geophysics
potentially
useful.
What
kind
of
survey
would
I
use
kind
of
the
idea
about
how
that
servic
works,
and
you
know
what
the
data
might
look
like
and
importantly
what
information
you
might
believe
in
from
that?
A
So
that's
that's
the
essence
I
mean
in
fact
you
guys
are
not
going
to
be
a
physicist
you're
going
to
go
out,
you're
going
to
be
actually
you're.
Probably
gonna
need
some
manager
company,
it's
gonna
hire
a
geophysicist.
So
that's
why
it's
important
you
know
what's
going
on
and
yeah,
so
that's
that's
our
sort
of
main
main.
A
Maybe
your
expectations
for
the
course
I,
don't
know
them,
but,
first
of
all,
and
you
might
get
some
new
knowledge,
basic
city
of
physics,
some
physics
little
math,
not
much,
and
mostly
it's
applications
so
connecting
a
whole
bunch
of
problems
that
you
might
become
involved
with.
With
the
geophysical
data
you
might
get.
Some
new
skills
may
be
using
trying
to
understand.
Okay.
How
can
I
use
this
to
physical
information
to
actually
make
decisions,
especially
for
the
engineers
here?
A
Geophysics
like
that
conversation,
stopper
is
actually
not
very,
very
right,
and
so
just
because
it's
got
the
word
physics
in
it.
Some
people
think.
Oh,
that's
going
to
be
really
tough,
but
it's
actually
not,
and
it's
I
think
most
people
find
it
extremely
rewarding
when
they
actually
do
understand
some
of
the
basic
physics,
because
then
things
are
not
such
a
black
box
and
I.
Think
there's
nothing
so
empowering
it's
just
understanding.
What's
going
on,
so
we're
going
to
try
to
give
you
a
little
bit
about.
A
There's
going
to
be
surveys
that
are
going
to
be
done
to
get
some
information
about
that.
So
in
do
a
magnetic
survey
to
find
out
something
about
the
magnetic
susceptibility.
We
might
do
a
ground-penetrating
radar
to
find
out
something
about
the
electrical
permittivity
or
a
DC
experiment
to
find
something
out
of
metal
content,
so
we're
going
to
kind
of
work
with
into
the
modules
here.
Each
one
is
connected
with
a
particular
type
of
survey
that
you
will
come
across
and
each
one
of
them
has
got
connection
with
a
particular
physical
problem.
A
So
the
again
that
sir
overall,
the
course
goals
here
are
to
kind
of
give
you
the
key
concept
about
you
know
what
the
role
of
applied
geophysics
is
physical
properties
surveys,
essentially
some
practical
facility
with
geophysical
methods,
just
so
that
you
know
what
it
stings
star
or
magnetic
survey
cuz.
How
many
people
have
come
across
the
magnetic
map?
A
A
How
do
I
understand
something
else
that
I
think
is
important
with
respect
to
the
goals
and
something
that's
useful,
basically
developing
professional
skills,
we're
going
to
be
working
in
teams,
and
so
there's
going
to
be.
You
know
some
assessment
of
accomplishment.
You
know
with
respect
to
that
team
and
working
together,
and
the
thing
is
that
this
is
good
for
your
personal
growth
and
also
employers.
Really
that's
one
of
the
things.
A
So
we're
going
to
approach
this
in
multiple
ways.
I
think
that
the
trick
here
is
to
have
you
see
the
same
concept
in
a
number
from
a
number
of
different
formats,
like
from
a
lecture
slide
from
a
team-based
learning,
Brooke
quiz
from
a
lab,
and
we
try
to
have
that
same
concept
presented
in
slightly
different
ways
with
the
unifying
thing
being
these
interactive
apps
that
are
being
developed
and
then,
by
the
end
of
it,
you
kind
of
get
it
right,
because
this
way
might
be
a
little
bit
better
for
some
people.
A
Yes,
so
here's
my
important
slide.
The
gold
parents
too,
to
learn
and
learning
comes
through
engagement
and
if
you're
engaged,
you
can
actually
also
have
some
fun
doing
it
right.
So
that's
good!
What
we
don't
want
is
this
okay,
so
no
Facebook
I
mean
everybody,
tells
you
this
stuff
right,
but
it
doesn't
matter,
but
you
know
no
movies,
no
Facebook,
no
engaging
in
other
activities.
You
come
here
if
they
attention.
We
put
a
lot
of
work
and
effort
into
developing
this
course.
A
So
you've
got
that
whole
eight
plus
plus
teams
myself
and
we're
trying
to
present
to
you
what
we
think
is
perhaps
one
of
the
best
courses
you'll
have
taken
it
University.
So
that
means
that
you
come
here.
You
pay
attention.
If
you
don't
want
to
pay
attention,
I'm
happy
not
to
have
you
show
up,
but
just
that's
it's
sort
of
an
either
course
and
besides
now
we
have
this
camera,
so
we
can
watch
when
you're
watching.
A
A
This
is
a
document
that
is
kind
of
like
your
right-hand
man
as
you
go
through
this
course,
because
there's
a
lot
of
things
happening,
we've
got
as
I
say,
you
know,
lectures
and
team-based
learning
and
labs,
and
things
and
stuff
like
this
and
you
need
to
you
kind
of
need
to
be
able
to
keep
track
of
where
you
are
and
both
for
yourselves
and
for
ourselves.
If
this
guy
here
that
keeps
us
going
so
here,
we
are
we're
7th
of
September
we're
in
week.
A
One
that's
the
goal:
we've
got,
you
know
it
was
actually
for
schools
and
there's
some
required
readings,
there's
the
syllabus.
So
if
you
click
on
here,
then
you'll
get
sort
of
a
a
PDF.
You
know
what
the
the
syllabus
is
for
the
course.
So
you
can
read
that
and
then
there's
GPG
I'll
tell
you
more
about
that
in
second
and
then
there's
the
intro
lectures,
so
just
the
slides
that
I'm
showing
you.
So
these
are
all
clickable
downloadable,
and
this
tells
you
where
you're
at
so
we're
endeavoring
to
have
all
of
this
kind
of
up-to-date.
A
A
A
So
if
we
click
on
GPG,
which
stands
for
geophysics
for
practicing
Pia
scientists,
this
is
our
web-based
resource
that
is
going
to
have
essentially
I,
think
virtually
all
the
material
or
links
to
all
the
material
that
you're
going
to
need
throughout
the
throughout
the
course.
It's
in
a
state
of
massive
reconstruction
at
this
point,
but
we'll
continue
to
stay
ahead
of
the
game,
for
instance
in
what
I'm
asking
you
to
read
for
the
very
first
well,
this
first
week
is
something
called
foundations
and
foundations.
A
A
Kind
of
tells
you
a
little
bit
about
how
things
are
going
and
then
there's
you
know
a
Jif
physics
primer.
That
tells
you
a
little
bit
about
what's
going
on
and
you
can
kind
of
click
through
here
and
get
some
information.
So
I,
don't
think
you
take
me
through
that,
but
that
resource
is
the
sort
of
composite
of
all
of
the
information
that
that
you're
going
to
me
thanks
Patrick.
A
A
A
There's
a
lot
of
components
in
this
course
and
we're
trying
to
break
it
down
in
such
a
way
that
make
some
sense.
So
there's
exams
we're
worth
about
half
of
the
value
of
the
course
there's
a
final
two,
our
finals
of
35%
there's
midterm.
Four,
eight
Keaton,
there's
labs.
That's
perhaps
one
of
the
major
ways
of
actually
learning
material.
In
the
course
I
think
students
find
that
the
labs
are
things
that
kind
of
really
consolidate
thanks
for
them.
A
A
So
we're
going
to
divide
the
whole
group
up
here
into
teams
of
about
five
or
six
people
per
team
and
you're
gonna
be
with
those
team
members
for
the
whole
year
and
you're
gonna
kind
of
work
together
on
various
things.
There's
continued
based
learning
exercises
where
we
hand
out
a
case
history.
We
would
ask
you
to
read
that
beforehand.
A
A
There's
huge
my
marking
what
we
tried
finish
up
until
last
year,
we've
tried
to
mark
everything
really
thoroughly
and
it
just
turned
out
that
it
was
too
much
work
for
the
TAS
and
actually
the
students
didn't
really
get
very
much
out
of
it
either.
So
it
was
kind
of
useless.
So
what
we
get
last
year
we
introduced,
you
know
a
check
plus
type
of
a
procedure
which
how
many
people
haven't
had
experience
with
that
with
labs.
Is
that
becoming
pretty
common
and
any
comments,
but
it
worked
even
worse.
A
A
The
TAS,
oh
so
office
hours,
I
kind
of
have
an
open-door
policy,
but
I'm
also
really
hard
to
get
a
hold
of.
So
if
you
want
to
get
a
hold
of
me,
should
make
an
appointment.
Your
best
bet,
though,
is
to
try
one
of
the
TAS
and
within
each
of
the
sessions
that
we've
got
on
the
right
hand,
side
of
the
schedule.
There
is
kind
of
like
a
principal
ta,
so
there'll
be
a
lot
of
people.
That
kind
of
know
everything
but
there'll
be
one
person
that
is
like
okay.
A
A
Jib
technical
problems,
that's
that's
kind
of
the
procedure
and
just
to
do
a
couple
of
examples.
So
this
is
tickle
survey.
It's
so
up
here.
It's
got
a
m31
that
stands
for
an
electromagnetic
instrument.
You're
actually
going
to
see
that
instrument
during
the
course-
and
we
got
a
we
got
a
picture
here
on
this
vertical
axis-
is
something
called
apparent.
Conductivity,
so
conductivity
tells
you
how
easily
it
is
for
current
pass
through.
A
So
even
this
I
mean
it's
very
simple,
but
it's
actually
telling
you
some
information
so
in
this
region
in
here
stuff
is
highly
conductive
compared
to
over
here.
So
there's
clearly,
some
kind
of
a
of
a
transition
here
and
geologically
what
it's
trying
it's
talking
about
is
you
got?
You
know.
You've
got
high
values
over
here
and
low
values
over
here,
and
you
have
to
appreciate
the
surface,
and
this
was
that
the
one
of
the
local
aquifers
just
outside
of
Vancouver
at
the
surface,
all
looked
same.
A
A
The
color
scale
on
here
is
obtained.
These
are
magnetic
data.
So
this
is
an
airborne
survey.
The
instrument
it's
called
a
magnetometer
and
the
Reds
are
high
values,
the
Blues
or
low
values,
and
if
you
just
try
to
concentrate
on
the
colors,
you
see
like
oh
there's,
stuff
happening.
You
look
at
this
red
color,
it's
kind
of
going
around
like
this,
so
it's
coming
here,
there's
there's
clearly
something
that's
coming
in
in
here:
right,
there's,
there's
a
geologic
texture,
there's
a
feeling
there
for
the
relationship
between
the
magnitude
of
this
geophysical,
data
and
stuff.
A
That's
that's
happening
and
on
the
lines
here,
as
well
as
the
annotations.
This
is,
you
know
this
is
geology
that
has
been
been
printed
on
here
and
it's
got.
You
know:
felsic
volcanic
Sauveur
here
and
different
kinds
of
fault
structures
over
here
and
assaults
up
here.
So
there's
there's
geology
it's
superimposed
on
the
geophysics
and
you
can
start
to
see
how
that
geophysical
map
is
actually
providing
some
geologic
information.
A
You
could
get
information
just
by
looking
at
the
data,
but
you
can
also
get
further
information
by
taking
those
data
and
doing
a
processing
step,
which
we
call
inversion
to
get
a
three-dimensional
distribution
of
what's
happening
inside
so
that
sort
of
another
level
of
working
with
the
data.
But
you
now
get
more
detailed
information
and
in
cases
like
this
I
you
actually
might
even
be
able
to
spot
a
place
to
put
a
drill
hole.
I
mean
this
was
the
target
of
interest.
A
A
Another
example.
This
is
this
guy's
theory.
It
says
that's
called
a
seismic
experiment,
so
he's
got
a
hammer
he's
hitting
on
a
base
plate
and
we've
got
some
recording
devices
up
here
and
here's
a
trace
of
information
that
we
get
from
the
recorders.
And
you
know
you
get
a
suite
of
of
traces
that
are
coming
in
due
to
a
succession
of
recording
devices,
and
you
start
to
get
you
know,
get
maybe
some
structure
that
that's
coming
through.
So
that's
telling
you
perhaps
some
information
about.
A
What's
there,
this
is
what's
happening
on
a
more
global
scale,
so
this
is
a
surface
Traverse
that
that's
going
along
here.
Each
one
of
these
is
one
of
those
seismic
traces.
It's
kind
of
hard
to
see
you
know
very
much
about
what's
going
on,
like
you
can
actually
see
that
there's
certain
things
that
are
coming
in
here
and
with
a
trained
eye
and
knowing
something
about
what
you're
looking
for
you
might
come
up
with
more
of
a
geologic
interpretation.
A
A
What
was
it
so?
This
is
the
data
here,
so
this
isn't
kind
of
like
a
nor
being
and
easting
and
the
Reds
are
high
magnitudes
and
the
Blues
are
lows.
You
got
a
picture
here
and
in
this
particular
case,
what
was
really
of
interest?
Was
you
know
what
the
structure
was
beneath
beneath
the
surface?
The
geologists
had
a
had
an
idea
about
how
the
aura
was
forming.
This
is
in
a
place
in
northern
Quebec
called
Raglan,
and
you
know
they
thought
that
the
ore
was
kind
of
coming
up
in
cylinders.
That
looked
like
this.
A
If
you
take
the
the
data
and
you
do
that
process
of
inversion,
you
now
can
get
an
image
of
the
interior
of
the
structure
earth.
It
kind
of
looks
like
that,
so
the
regions
of
high
magnetism
sort
of
outcrop
here
and
the
outcrop
here,
but
they're
actually
sort
of
connected
in
in
between.
So
you
get
a
you
do
it
you
get
a
geophysical
image.
A
A
So
hopefully,
that
kind
of
gives
you
an
idea
about
so
what
the
course
is.
What
the
course
is
gonna
be
like
some
of
the
details
about
where
things
are
so
go.
Look
at
the
at
the
course
website.
Look
at
the
GPG
look
at
the
syllabus
look
at
the
schedule!
Okay,
so
you
can
work
all
through
through
that
I'd
like
you
for
next
time
to
read
the
section
on
foundations.
A
So
in
that
there's
going
to
be
something
called
the
seven
step
process,
it's
a
way
that
we're
going
to
kind
of
fold
everything
together
and
it's
going
to
help
tie
our
information
for
these
various
kinds
of
problems,
and
it
gives
you
some
background
about
physics
and
just
I.
Think
it's!
You
gets
you
going
talks
about
the
different
surveys.
A
Actually,
for
our
experience
last
year
was
the
physical
properties
lab
was
really
interesting
to
people,
because
you,
geologists
or
engineers
have
a
certain
way
of
characterizing
a
rock
right.
So
you
you
pick
a
rock
up,
and
you
know
it's
got
texture
color.
Maybe
it's
got
smell
or
taste
or
whatever
you
guys
do.
I,
don't
know
anyway,
so
you
you've
got
your
way
of
describing
that
rock,
but
a
geophysicist
has
got
a
different
set
of
properties
that
they
use.
A
So
the
susceptibility
the
conductivity
things
that
you
know
how
easy
it
is
to
be
magnetized
or
how
easy
it
is
to
you
know,
have
current
flow
through
and
sometimes
rocks
will
look
exactly
the
same.
You
know
from
the
perspective
of
the
geologists
description,
but
you
look
at
it
geophysical
II
and
it's
like
wait
a
minute.
These
guys
are
really
different
and
sometimes
the
other
thing
goes.
So
it's
clearly
complementary
information,
but
just
the
fact
that
you've
got
a
whole
different
set
of
words
and
understanding
to
describe
these
rocks.
People
found
really
interesting.
A
So
our
what
we're
going
to
do
here
is
have
one
lecture
kind
of
continuing,
introduce
things,
but
you
could
use
that
seven
second
seizure
and
then
we'll
do
some
stuff,
one
just
for
properties
and
then
we'll
start
our
first
element
of
magnetic
so
Reid
foundations,
and
we
should
be
good
to
go.
But
now
before
you
go,
I
need
to
take
your
picture.
Why
do
we
do
that?
Because.