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陕西快乐十分出号规律:Profile of Paul E. Olsen
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Geologist Paul E. Olsen follows a simple guiding principle: obtain information from the geological record that is not available from other sources. Doing so has enabled Olsen, a professor of earth and environmental sciences at the Lamont–Doherty Earth Observatory of Columbia University (LDEO), to illuminate the history of the Solar System and evolution of continental ecosystems. Olsen, who was elected to the National Academy of Sciences in 2008, recovered a climate cyclicity record spanning 30 million years and discovered the largest North American vertebrate fossil assemblage at the Triassic–Jurassic boundary. His latest project is The Geological Orrery, a network of early Mesozoic geological records of orbitally paced climate that could lead to fundamental insights into physical processes of the Solar System.
Olsen was born in New York City in 1953, but after a series of moves he and his family settled in Livingston, New Jersey. Olsen says, “I was one of those awkward kids who knew all the names of the dinosaurs described in children’s and young readers’ books of the 1950s and was happy to tell anyone all about them.” When he learned that another Livingston resident, Silvio Crespo, Jr., found dinosaur footprints in the summer of 1968 at nearby Riker Hill on what was then the Roseland Quarry, he and friend Anthony Lessa hiked 1.5 miles to the site.
There, they met amateur paleontologist Robert Salkin, who introduced them to vertebrate paleontologist Donald Baird, then at Princeton University, and Bobb Schaeffer, a curator and Triassic fish expert at the American Museum of Natural History. Baird facilitated a meeting with Princeton sedimentologist Franklyn Van Houten, who had interpreted the alternating gray and red layers of older strata in the Newark Basin as being paced by variations in …