General geology and petrology of the Precambrian crystalline rocks, Park and Jefferson Counties, Colorado metamorphic rocks in the Tarryall region were intruded by Precambrian igneous rocks in three distinct episodes 1.7,1.46, and 1.04 bibblion years ago. Late phases of the final intrusion, the Pikes Peak Granite, were accompanied by beryllium-bearing greisens
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Washington, DC
U.S. Government Print. Office
1977
|
| Schriftenreihe: | Geological Survey professional paper
608-B |
| Schlagworte: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|