Geologic Contacts
A geologic contact is where one rock type touches another. There are three types of geologic contact: 1. Depositional con…
A geologic contact is where one rock type touches another. There are three types of geologic contact: 1. Depositional con…
Our knowledge about the rise of oxygen gas in Earth’s atmosphere comes from multiple lines of evidence in the rock record,…
Siccar Point is world-famous as the most important unconformity described by J ames Hutton (1726-1797) in support o…
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