No atmosphere, no weathering
Examples: exfoliation, frost action,
Frost Action – water and alternating temps.
Abrasion – smooth corners, decreases size
lichen, limestone, acid rain
Lichen: secrete acids, composite organisms consisting of a
symbiotic association of a fungus with a photosynthetic partner, usually
either a green algae or cyanobacterium
Limestone Dry (arid) climate
no chemical weathering – notice sharp corners)
Limestone humid climate
causes solution weathering – notice rounded
features, headstone carvings becoming illegible)
Limestone (solution weathering)
Helps make rock
strata and features The Grand Canyon.
really stand out.
Horizontal bedding, cross bedding,
More resistant forms a
cliff or ridge (sticks out).
Less resistant erodes back
(concave) creates slopes or
Such pretty cross bedding
Sedimentary Rocks Vocab.
• Grab the Orange Book page 61 in the
back of the room