Geologic Contacts
A geologic contact is the surface along which one rock touches
another. They may be either Depositional,
Intrusive, of Fault contacts.
A depositional contact between sandstone (above) and conglomerate (below) |
Intrusive contact between granite and gneiss. Note irregularity of contact. |
Fault contact (aerial) between different Mesozoic sedimentary rocks, Nevada. |
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