A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Leucite-nepheline tephrite, Laacher See, Germany |
|---|---|
| Description | Tephrite is a rock type closely related to common basalt. Besides the typical plagioclase and augite of basalt, tephrites contain nepheline or leucite, or both. This relatively young sample is from the Laacher See eruption, in the Eifel Volcanic Field of western Germany. It erupted about 13,000 years ago. The eruption produced about 5 km3 of magma. Most of the mineral grains in this sample are very fine, but it does contain a few larger grains of black hornblende. |
| Lithostratigraphy | Laacher See eruption |
| Geologic province | Eifel Volcanic Field |
| Location | Germany |
| Photographer | Twyla Baker. 2001-05-16. |
| Collection | Ward’s University Rock Collection #129. |
| Key words | basalt, tephrite, Laacher See, Germany, Eifel |
| Tech details | 821 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm AF Nikon micro lens. |
| GeoDIL number | 457 |
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