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historicalmarkerproject/markers/HM1DI0_a-special-place-on-the-planet_La-Pine-OR.html
Where people lived near obsidian, their lives and cultures were transformed. They used and celebrated the glassy gift of volcanoes to manufacture tools, weapons, jewelry, sculptures, and ceremonial objects. To ancient Central American people, the …
historicalmarkerproject/markers/HM1DHZ_the-eruption_La-Pine-OR.html
First came a violent eruption of pumice and ash. Then glassy lava oozed from the ground. (Graphic Index)1 Magma ChamberFrom deep hot regions, liquid rock called magma accumulated in a chamber 2 to 4 miles (3 to 6 km) below the surface. Temperat…
historicalmarkerproject/markers/HM1DHY_glass-menagerie_La-Pine-OR.html
The entire surface of this remarkable flow is glass, a liquid that cooled without crystallizing. The striking differences you see from rock to rock are due to the number and size of bubbles. Why is everything glass?Whether natural or synthetic,…
historicalmarkerproject/markers/HM1DHX_big-obsidian-flow_La-Pine-OR.html
The furnaces of the earth brought spectacular change to this land 1300 years ago. A new, rough, glassy environment offered a harsh home for the heartiest plants and animals. Past cultures prized the shiny black rock for their survival. Today, the …
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