I live in a volcano. An extinct one. At least I hope it is.
"Geologically Cripple Creek is a freak.", reported the Chicago Times in 1896. "It is a vast crater bed in which the elements once were wont to make merry with nature and play unexpected pranks that must have caused the systematic old dame many a vexatious hour."
Cripple Creek sits in a caldera measuring 24 square miles. When the caldera collapsed, giant size rocks were thrown about the basin. The caldera is surrounded on all sides by a combination of quartz, feldspar, and mica. As eons passed by, more volcanic activity took place causing mineral rich solutions to fill the empty faults and fissures. These hardened over time and became the minerals which are now being mined near town. As more years passed, these mineral rich veins made their way closer to the surface only to be buried once again by granite, gneiss, and schist. Erosion later took its toll on some areas, exposing bits of the precious commodity.
The initial activity took place about 35 million years ago. There are still volcanic cones around Cripple Creek. All sitting quiet. Watching. Waiting.
"Geologically Cripple Creek is a freak.", reported the Chicago Times in 1896. "It is a vast crater bed in which the elements once were wont to make merry with nature and play unexpected pranks that must have caused the systematic old dame many a vexatious hour."
 |
| The City of Cripple Creek can be seen sitting in a basin which is an extinct caldera |
The initial activity took place about 35 million years ago. There are still volcanic cones around Cripple Creek. All sitting quiet. Watching. Waiting.
As Washingtonians have learned volcanoes aren't always
ReplyDeletewaiting... ;-)
Very cool! And thanks for teaching me the definition of "caldera." I've always wondered. "Kaldera" is a popular name in the pagan community and that's the only place I've ever seen it referenced.
ReplyDelete