One theory is they start from a nucleus of iron which attracts the heavier elements in the rock toward it....i dunno.
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Piers Canadas
mockney_piers
Member since 2005
- Taken on June 24, 2005
- Valle Fertil, San Juan, AR
- Canon EOS Digital Rebel
- 594 Views
- 0 Galleries
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- Settings: 1/250ƒ/10ISO 100102 mm
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cortland firefighter 97 months ago | reply
neat shot
Anima Fotografie 92 months ago | reply
Great composition. Nature is amazing...