A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Vesicular basalt, Modoc Co., California, USA |
|---|---|
| Description | This basalt, from northeastern California, contains vesicles (holes) formed when volcanic gases were trapped in the cooling lava. The specimen is 8 cm across. Although not visible in hand specimen, microscopic examination reveals that this sample contains two different sizes of plagioclase crystals - suggesting a two stage cooling history. Abundant fine grained augite is also present. |
| Location | USA ▹ California ▹ Modoc. Northeastern California. |
| Photographer | Nessa Eull. 2001-05-16. |
| Collection | Ward’s University Rock Collection #128. |
| Key words | basalt, vesicle, vesicular, California |
| Tech details | 935 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens. |
| GeoDIL number | 458 |
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