Skip to main content
A service of Arizona State Library, Archives and Public Records, a division of the Secretary of State. Arizona Memory Project

Add or remove other collections to your search:



You've searched: All Collections

  • All fields: micrometer-thick
(1 result)



Display: 20

    • Curvilinear and Complex Petroglyphs

    • Archaic, Hohokam, or Patayan
    • Rock art--Arizona; Sacred sites; Petroglyphs;
    • The rocks of Hedgpeth Hills were formed by volcanic activity millions of years ago. As lava cooled, it cracked into large boulders. This kind of volcanic rock is called andesitic basalt. In arid regions, a thin dark film called desert varnish...

QuickView

Display a larger image and more item information when the pointer pauses over a thumbnail
 

Layout options:

Select the collections to add or remove from your search
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
 
OK
Select the collections to add or remove from your search
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
 
OK