This is a place to share your learnings in Geography 12 with other students. You will be required to make at least one post each week.
You will be evaluated on your posts so demonstrate geographic vocabulary, knowledge, and thinking. Take it seriously but have fun with it too!
Friday, February 25, 2011
Sill
A sill is a horizontal sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock.
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