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Les Price, opal miner, above mineshaft with dinosaur footprints at Lightning Ridge, Australia. Dinosaur footprints are preserved when the damp surface material (clay or sand) is baked for a long period by the Sun, as at the beginning of a drought. When the overlying water eventually returns, it carries sediments which fill in the footprints, but which are of a different composition to the underlying rock. Here, the excavation of the mine has removed this lower layer (the original 'surface'), leaving the cast of the footprint visible, although it is debatable whether the miner's tools shaped the rock into the shape of a footprint. MODEL RELEASED [1989]

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AUS_SCI_DINO_10_xs.jpg
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© Peter Menzel www.menzelphoto.com
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Australian Dinosaurs, Australia
Les Price, opal miner, above mineshaft with dinosaur footprints at Lightning Ridge, Australia. Dinosaur footprints are preserved when the damp surface material (clay or sand) is baked for a long period by the Sun, as at the beginning of a drought. When the overlying water eventually returns, it carries sediments which fill in the footprints, but which are of a different composition to the underlying rock. Here, the excavation of the mine has removed this lower layer (the original 'surface'), leaving the cast of the footprint visible, although it is debatable whether the miner's tools shaped the rock into the shape of a footprint. MODEL RELEASED [1989]
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