Chesapeake Invader by C. Wylie Poag

Chesapeake Invader



Download Chesapeake Invader




Chesapeake Invader C. Wylie Poag
Language: English
Page: 183
Format: pdf
ISBN: 0691009198, 9780691009193
Publisher: Princeton University Press

From Library Journal

A senior scientist with the U.S. Geological Survey, Poag recounts the years of painstaking research that led to the identification of a 50-mile-wide meteorite crater formed 35 million years ago and now lying beneath newer rock and the waters of Chesapeake Bay. The chapters on the biological side of the research are a little weak, but the focus is on earth science and meteorology. Poag does a good job of making his text accessible to a lay audience and of explaining why it is important to study such phenomena as this crater. This book focuses on a specific site, but earlier volumes, for example, Bevan French's Traces of Catastrophe (Luna and Planetary Inst., 1998), Paul Hodge's Meteorite Craters and Impact Structures of the Earth (Cambridge Univ., 1994), and Kathleen Mark's Meteorite Craters (1987) have already covered the subject of meteorite craters in general. For academic libraries and larger public libraries.AJean E. Crampon, Science & Engineering Lib., Univ. of Southern California, Los Angeles
Copyright 1999 Reed Business Information, Inc.

From Kirkus Reviews

In days of yore, 35 million days yore, a tremendous astral slap to earth's thin crust devastated the eastern seaboard of North America. Research geologist Poag reports the event like a 1950s news flash when he can, and like a conscientious scientist when he must. Out of the ether, in the late Eocene, hurtled a fabulous meteorite, 23 miles in diameter, traveling at 60,000 miles per hour, sizzling through the atmosphere, and slamming into the Chesapeake Bay. It kicked out supersonic shock waves, a hypercane (a super-hurricane with winds up to 500 mph) laden with white-hot rock debris, and tsunamis that could have measured in the thousands of feet. ``The blast wave alone would have instantly incinerated all higher life forms within six hundred miles.'' It left a crater 50 miles wide, a mile deep, now buried under younger rock and the thin waters of the Chesapeake. All this Poag relates with clipped vibrancy, and it makes for riveting reading, as other such events could happen at any time. You can run, but you can't hide. Nor can Poag escape the more mundane aspects of his workfor instance, explaining how he figured all this out. He tells that story by detailing the way he went about establishing a complete picture from fragmentary evidence. In this case, he combines examination of seismic samples provided by Texaco and core samples drilled by the government with an overview of evolutionary theory and rock principals (there are enough impact breccias and crystalline basements to keep readers on their geological toes). Poag also goes to great lengths to give practical justification for such research, pointing out how local subsidence is influenced by the crater structure and how its briny reservoir may contaminate groundwater supplies. A light-handed tale of scientific exploration, fascinating as living theater, where the daily grind has a chance to reveal more cosmic thrummings. (16 maps, 60 halftones, not seen) -- Copyright ©1999, Kirkus Associates, LP. All rights reserved.

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