World Atlas 2010 (4th edition)

28

ABCD

1

2

4

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27

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135

32

0 km

0 miles 200

200

NORTH AMERICA

USA: The Southwest

Sonoran

Desert

Colorado

Plateau

P

ai

n

te

d

(^) D

e

s

e

r

t

L. Mead

L. Powell

G

ra

nd^ Canyo

n

C

ol

o

ra

d

o

R

io

G

ra

n

de

Pec

os

Ri

o

G

ra

n

d

e

PACIFIC

OCEAN

G

o

l

f

o

d

e

C

a

l

i

f

o

r

n

i

a

ARIZONA

NEW

MEXICO

COLORADO

NEVADA

CALIFORNIA

MEXI

Casa Grande

Douglas

Flagstaff

Prescott

Yuma

Alamogordo

Artesia

Carlsbad

Farmington

Gallup

Las Cruces

Los Alamos

Roswell

Mesa

Scottsdale

Tucson

Albuquerque

El Paso

Glendale

SANTA FE

PHOENIX

The Colorado River has

cut down some 6242 ft

(2000 m) into the

Colorado Plateau

to form the Grand

Canyon, exposing

rock strata over

2 billion years old.

Meteor Crater was formed when a

meteor about 150 ft (46 m) across

struck the desert at about 40,000 mph

(64,372 km/h) creating a bowl-shaped

depression 4,150 ft (1,265 m) wide and

570 ft (174 m) deep.

The first atomic bomb was

tested at Trinity Site near

Alamogordo on July 16, 1945,

yielding an explosive force

equivalent to 20,000 tons

(tonnes) of TNT from around

2.2 lbs (1 kg) of plutonium-239.

UTAH