Rhythms and the Measurements of Geologic Time
Author | : Joseph Barrell |
Publisher | : |
Total Pages | : 160 |
Release | : 1917 |
Genre | : Geological time |
ISBN | : |
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Author | : Joseph Barrell |
Publisher | : |
Total Pages | : 160 |
Release | : 1917 |
Genre | : Geological time |
ISBN | : |
Author | : Charles Schuchert |
Publisher | : |
Total Pages | : 454 |
Release | : 1927 |
Genre | : Geology |
ISBN | : |
Author | : Grove Karl Gilbert |
Publisher | : |
Total Pages | : |
Release | : 2016-10-16 |
Genre | : |
ISBN | : 9781539567417 |
Grove Karl Gilbert (May 6, 1843 - May 1, 1918), known by the abbreviated name G. K. Gilbert in academic literature, was an American geologist. Gilbert was born in Rochester, New York and graduated from the University of Rochester. In 1871, he joined George M. Wheeler's geographical survey as its first geologist. He then joined the Powell Survey of the Rocky Mountain Region in 1874, becoming Powell's primary assistant, and stayed with the survey until 1879. During this time he published an important monograph, The Geology of the Henry Mountains (1877). After the creation of the U.S. Geological Survey in 1879, he was appointed to the position of Senior Geologist and worked for the USGS until his death (including a term as acting director). Gilbert published a study of the former ancient Lake Bonneville in 1890 (the lake existed during the Pleistocene), of which the Great Salt Lake is a remnant. He named that lake after the army captain Benjamin L.E. de Bonneville, who had explored this region previously. The type of river delta that Gilbert described at this location has since become known to geomorphologists as a Gilbert delta. In 1891, Gilbert examined the possible origins for a crater in Arizona, now known as Meteor Crater but then referred to as Coon Butte. For a number of reasons, and against his intuition, he concluded it was the result of a volcanic steam explosion rather than an impact of a meteorite. Gilbert based his conclusions on a belief that for an impact crater, the volume of the crater including the meteorite should be more than the ejected material on the rim and also a belief that if it was a meteorite then iron should create magnetic anomalies. Gilbert's calculations showed that the volume of the crater and the debris on the rim were roughly equal. Further there were no magnetic anomalies. Gilbert argued that the meteorite fragments found on the rim were just "coincidence." Gilbert would publicize these conclusions in a series of lectures in 1895. Subsequent investigations would reveal that it was in fact a meteor crater, but that interpretation was not well established until the mid-20th century. As part of his interest in crater origins, Gilbert also studied the moon's craters and concluded they were caused by impact events rather than volcanoes, although he wondered why the craters were round and not oval as expected for an oblique impact. The interpretation of lunar craters as of impact origin was also debated until the mid-20th century. He joined the Harriman Alaska Expedition in 1899. Two weeks after the 1906 San Francisco earthquake, Gilbert took a series of photographs documenting the damage along the San Andreas fault from Inverness to Bolinas. Gilbert is considered one of the giants of the sub-discipline of geomorphology, having contributed to the understanding of landscape evolution, erosion, river incision and sedimentation. Gilbert was a planetary science pioneer, correctly identifying lunar craters as caused by impacts, and carrying out early impact-cratering experiments. Gilbert was one of the more influential early American geologists.
Author | : Gary D. Rosenberg |
Publisher | : Wiley-Interscience |
Total Pages | : 584 |
Release | : 1975 |
Genre | : Science |
ISBN | : |
Author | : Nicky Huys |
Publisher | : Nicky Huys Books |
Total Pages | : 119 |
Release | : 2024-02-06 |
Genre | : Science |
ISBN | : |
"Rhythms of the Earth: An Introduction to Geology" takes readers on a captivating journey through the dynamic processes that have shaped our planet. From the formation of mountains to the eruption of volcanoes, this book explores the intricate dance of geological forces that have sculpted the earth over millions of years. With vivid descriptions and stunning imagery, readers will gain a deeper understanding of the earth's complex geological history and the profound impact it has on our world today. Whether you're a student, a science enthusiast, or simply curious about the natural world, this book offers an engaging and insightful introduction to the fascinating field of geology.
Author | : Amadeus William Grabau |
Publisher | : |
Total Pages | : 614 |
Release | : 1940 |
Genre | : Earth movements |
ISBN | : |
Author | : Joseph Barrell |
Publisher | : |
Total Pages | : 620 |
Release | : 1919 |
Genre | : |
ISBN | : |
Author | : Charles Schuchert |
Publisher | : |
Total Pages | : |
Release | : 1937 |
Genre | : Geology |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 54 |
Release | : 1927 |
Genre | : Biology |
ISBN | : |