Geol 421: Igneous
& Metamorphic Petrology
Photomicrographs
of rocks and minerals
Field
Images
This page has some interesting images from a few outcrops/ field trips.
Although designed primarily for students enrolled in Geology 110, some
of the pictures are of general interest. The pictures are grouped by topic.
Igneous Structures
| Columnar basalts | Pahoe hoe & aa |
| Columnar basalt (2) | Pahoe hoe & aa (2) |
| Pillow basalt | Cinder cone |
| Pillow basalt (2) | Cinder cone (2) |
| Lava Tube | Spatter cone |
| Pahoe hoe | Spatter cone (2) |
| Pahoe hoe (2) |
Hot
springs, geysers, fumaroles, ... etc.
| Hot Spring | Siliceous sinter |
| Geyser | Travertine |
| Geyser (2) | Travertine (2) |
| fumarole | |
| Mudpot | |
| Mud volcano |
Last updated: June, 2002
