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Geotimes June 2004 Callan Bentley |
Geology and history intersect in Charleston That the Civil War began here is a venerable fact of the American saga, but it may come as a surprise to learn that some of the richest fossil deposits in the country are located near Charleston, and that a 7.6-magnitude earthquake occurred here in 1886, far from any tectonic boundary. |
Geotimes June 2004 Naomi Lubick |
Domed Dinos Made Love Not War In the 1950s, paleontologists hypothesized that dinosaurs with skulls shaped like bowling balls butted heads, much like sheep or other modern horned animals might. But a recent reassessment of some of these fossils revealed something quite different. |
Geotimes June 2004 Naomi Lubick |
Petra: An Eroding Ancient City Petra is an ancient city in Jordan, where carved stone facades cover red sandstone walls. Tourism has taken its toll... Preserving an Afghan landmark... Conservation changes... |
Geotimes June 2004 Megan Sever |
Reworking the Cambrian Explosion Trilobite diversification during the Cambrian is thought to exemplify the explosion of animals and plants. New research suggests, however, that the trilobites diversified much earlier, thus calling into question the theory and possible dates of a biological big bang caused by tectonic movement. |
Geotimes June 2004 Megan Sever |
Closing the Dating Gap Assigning dates to archaeological artifacts from the chronological gap may now be somewhat easier, thanks to a new method involving quartz crystals. |
Geotimes May 2004 |
A Whale of a Find In its devastating, furious race up the U.S. East Coast last September, Hurricane Isabel did one positive thing: It unearthed an extremely rare 8-million-year-old whale skeleton. |
Geotimes May 2004 Sara Pratt |
Ocean Anoxia Researchers are using microfossils to date ocean anoxic events, or severe oxygen depletion in the ocean, back to 132 million years ago. The findings will open up several new avenues of inquiry including the impact of the global carbon cycle perturbation on the biosphere as a whole. |
Geotimes May 2004 Megan Sever |
Fossilized Plague in Egypt Paleoentomologist Eva Panagiotakopulu found plague in fossilized flea remains in ancient ruins in Amarna, Egypt. She now believes the plague may have begun in Egypt rather than Central Asia. |
Geotimes May 2004 Sara Pratt |
Ice in the Greenhouse? The greenhouse world of the Late Cretaceous, long thought to be ice-free, may have been chillier than previously predicted. |
Geotimes April 2004 Megan Sever |
Tracks in the Colorado Sand University of Colorado researchers recently made a stunning discovery on a golf course: several well-preserved mammal tracks from the age of the dinosaurs. |
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