Download Earth science: decade by decade by Christina Reed PDF

By Christina Reed

A background of Earth sciences within the 20th century discusses the advantages of making cautious observations and pursuing paths and concepts that others have ignored or haven't ventured to tread

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On May 8 more mudflows cascaded down the valley, this time striking the town of Prêcheur at dawn and carrying 800 people out to sea. , as the governor knelt in prayer, a dark cloud emerged from the crater. Witnesses hiking the far southeastern hills heard an explosion, looked at the volcano, and saw a glowing avalanche of black smoke and dust consume the landscape, roll down the valley, jump over the flanking hills above St. Pierre, broil through the city, and tumble out over the sea. The ships full of rum exploded and burned.

Rex skeleton from Big Dry Creek, Montana, in 1908. 6 m) tall and measure 47 feet (14 m) from tip to tail when mounted for display at the American Museum of Natural History in 1915. The plans for the display had included mounting the holotype specimen (AMNH 973) in a crouching position over a fossil of a Trachodon as if the two were fighting over a meal. In an article for Scientific American, Brown described the scene: “It is early morning along the shore of a Cretaceous lake four million years ago.

Afterward, the bones of the holotype specimen, which Osborn had rushed to name as the first T. rex, were then stored in a warehouse where the giant skeleton crouched in the dark until the onset of World War II. At that time, Brown met with curator J. Leroy Kay of the Carnegie Museum to arrange a fossil exchange. Carnegie had on display the skull of CMNH 1400, which Olaf Peterson had found in 1902 in Wyoming, but the curators both agreed it was important that the holotype specimen of T. rex leave New York.

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