In recent years stratigraphy has been revitalised by new ideas and techniques such as the relationship between plate tectonics and sediment accumulations, magnetic and seismic stratigraphy, stable isotopes and cathodoluminescence. While stratigraphy is a popular course for students, offered as part of almost all geology degree curricula, the standard textbooks on the subject do not cover these increasingly important topics. Principles of Stratigraphic Analysis should play its part in the renaissance of stratigraphy among the current generation of undergraduates.

Principles of Stratigraphic Analysis

Science & Math

Blatt, Harry

Berry, William B. N.

Brande, Scott

Earth Sciences

Blackwell Science Inc.

<p>This book, now in a revised edition, outlines the search which led to the development of a method for dividing prehistoric time, based on the evolutionary development of organisms whose fossil record has been left in the rocks of the earth's crust. The search in turn resulted in the growth and development of various units which have been linked together to form a loosely defined time scale. Owing to its coverage of the development of the time scale in detail, and because it emphasizes the role evolution has played in the reckoning of past time, the book is a useful supplementary text for courses in introductory geology, evolution, palaeontology, stratigraphy, and the philosophy and history of science. It should additionally appeal to the general reader who wishes to further explore the scale of time units used in general geological calculations.</p>

Growth of a Prehistoric Time Scale: Based on Organic Evolution

Evolution

<p>The Lost Sierra, California Northern Mines region of the Sierra Nevada, sprang to life during the gold rush. In 1850 prospectors flocked to its rich diggings, dug $93 million in gold by 1911. Many miners died in the winter of 1852-53, trapped by 30 foot snowdrifts. Next winter miners sported skis, then known as Norwegian "snow-shoes." Soon the region swarmed with men, women & children sliding about on snow-shoes. Doctors, Expressmen, mailmen, including famed Snow-Shoe Thompson, tracked the region on skis. La Porte, first gold site, welcomed winter sports. In 1868 La Porte's Alturas Snow-shoe Club staged the world's first organized downhill ski races. Miners hit up to 80 mph, racing for rich gold purses on skis 12 feet long! "I learned many fascinating facts about the Snow-shoe Era from your book," Allen H. Adler, Chair W.S. Ski Assn., Nat. Historical Committee. Rugged terrain cut the Lost Sierra from the rest of the world. Three forks of the mighty Feather River lace its forests with deep canyons. Rivers left towering peaks & sharp ridges. Quincy, Plumas County seat, stands at the northern gateway; Marysville guards the West; Downieville borders the south, Johnsville, headquarters of today's Plumas Eureka State Park, faces east. The Lost Sierra became deserted as mining towns, except La Porte, died. Books available: Wentworth Communications Phone/FAX 707-938-9201.</p>

Lost Sierra; Gold, Ghosts & Skis: Legendary Days of Skiing in the California Mining Camps

History

Americas

W & A Communications

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