Ringing rocks
From Wikipedia, the free encyclopedia
Ringing Rocks is a phenomenon where rocks have the curious property of resonating like a bell when struck with a hammer or other object. One such place where this can be observed is in Ringing Rocks Park located near Bridgeton, Bucks County, Pennsylvania USA.
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[edit] Ringing Rocks Park
According to the unmuseum, "In 1965 a geologist named Richard Faas from Lafayette College in nearby Easton, Pennsylvania, took a few of the rocks back to his lab for testing. He found that when the rocks were struck they created a series of tones at frequencies lower than the human ear can hear. Only because the tones interact with each other is a sound high pitched enough to be audible generated. Though Faas's experiments with the rocks explained the nature of the tones he was unable to figure out the specific physical mechanism in the rock that made them, though scientists suspect it has something to do with stress within the rocks."[1]
[edit] Bell Rock Range
The Bell Rock Range is a large ultramafic gabbro-peridotite intrusion in the Musgrave Block of Western Australia, near Warburton. It is composed of massive, heavily indurated intrusive rocks and forms a prominent 15 kilometre long range of mountains and hills.
The intrusion is called the Bell Rock Range because, when struck, the rocks ring like a bell.
[edit] See also
[edit] External references
- Maps and aerial photos
- Street map from Google Maps, or Yahoo! Maps, or Windows Live Local
- Satellite image from Google Maps, Windows Live Local, WikiMapia
- Topographic map from TopoZone
- Aerial image or topographic map from TerraServer-USA
- Unexplained Earth: Ringing Rocks of Pennsylvania
- Ringing Rocks, Lower Pottsgrove Township, PA
