8. Sediments are classified by size:
use the reference tables
page 6 to complete the chart
Sediment Name Diameter range(cm)
Boulder 25.6 or larger
Cobble 6.4-25.5
Pebble 0.2-6.3
Sand 0.006-0.1
Silt (colloid-suspended) 0.0004-0.005
Clay (colloid-suspended) Less than 0.0004
Dissolved particles (ions) Not visible
Examples:salt,calcite
9. PHYSICAL
WEATHERING:
ROCKS ARE BROKEN INTO
SMALLER PIECES
WITHOUT CHANGING
THE
CHEMICAL NATURE OF THE ROCK
58. SOIL HORIZONS
(LAYERS)
A (TOP SOIL)
rich in organic material
B little organic material
rich in minerals
leeched from horizon A
C partly weathered
broken up bedrock
sits on top of
solid bedrock
59.
60. The two types of
sediment
(soil) are:
Transported
Residual
61. TRANSPORTED
SOILS:
CARRIED FROM
LOCATION OF PARENT
ROCK
MOST OF NEW YORK
SOIL IS
TRANSPORTED
62.
63. SOIL ASSOCIATIONS (CHARACTERISTICS
3 WAYS THAT SOIL CAN
DIFFER IN VARIOUS
LOCATIONS:
1. COMPOSITION (MINERALS)
2. MOISTURE
3. ORGANIC MATERIAL
64. HOW CAN WE IMPROVE
THE SOIL’S ABILITY
TO SUSTAIN LIFE?