𝔖 Bobbio Scriptorium
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BOTANICAL EVIDENCE OF THE AGE OF CERTAIN OX-BOW LAKES

✍ Scribed by Harper, R. M.

Book ID
121111313
Publisher
American Association for the Advancement of Science
Year
1912
Tongue
English
Weight
120 KB
Volume
36
Category
Article
ISSN
0036-8075

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The waters of Lake Nyos are impounded by a fragile natural dam composed of pyroclastic rocks ejected during the formation of the lake crater (maar). Lateral erosion of this dam has reduced its width from over 500 m to only 45 m. Published whole-rock K-Ar ages of about 100 ka on juvenile basalt from