2009, ISBN: 0217975135, Lieferbar binnen 4-6 Wochen

Internationaler Buchtitel. In englischer Sprache. Verlag: Cambridge Scholars Publishing, 154 Seiten, L=152mm, B=229mm, H=9mm, Gew.=236gr, Kartoniert/Broschiert, Klappentext: Purchase of t… More...

Internationaler Buchtitel. In englischer Sprache. Verlag: Cambridge Scholars Publishing, 154 Seiten, L=152mm, B=229mm, H=9mm, Gew.=236gr, Kartoniert/Broschiert, Klappentext: Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III. A REVISION OF THE SEQUENCE AND STRUCTURE OF THE PRE-KEWEENAWAN FORMATIONS OF THE EAST- ERN GOGEBIC IRON RANGE. R. C. ALLEN AND L. P. BARRETT. INTRODUCTORY STATEMENT. In this chapter there is presented the results of recent studies of the geology of the Gogebic iron range from T 47 N, R 45 W, east to Gogebic lake, a distance of 15 miles. Former interpretations of the geology of the Gogebic iron range are based almost entirely on early investigations of the United States Geological Survey. Prior to 1914 four years of study of the pre- Cambrian of the region south and east of Gogebic Lake to the Iron River district, including 38 townships adjacent in northern Wisconsin, by the senior writer and his assistants had failed to establish a satisfactory basis of correlation with the rocks of the Gogebic range. (Fig. 1.) Inasmuch as recent drilling for iron ore has supplied important information, unavailable to earlier workers in this field, it was thought that a field study of the eastern Gogebic iron range would probably alter former interpretations of the geology and furnish a better basis of correlation with the pre-Cambrian terranes of adjacent territory and the Lake Superior region. The results of our studies are more satisfactory than we had anticipated and we bdieve are of considerable importance to the progress of pre-Cambrian geology. We acknowledge our indebtedness to Dr. C. R. Van Hise for placing in our hands his early field notes and plats, to Dr. C. K. Leith for helpful suggestions in field conference, to Mr. Robert Selden Rose of Mar- quette, Messrs. Luther Brewer and George Rupp of Ironwood, and the Presque Isle Mining Company for records of drilling and underground exploration. SUMMARY OF THE GEOLOGY BASED ON EARLIER WORK. Van Hise and L...<

1914, ISBN: 9780217975131

[ED: Softcover], [PU: Cambridge Scholars Publishing], Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This… More...

[ED: Softcover], [PU: Cambridge Scholars Publishing], Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III. A REVISION OF THE SEQUENCE AND STRUCTURE OF THE PRE-KEWEENAWAN FORMATIONS OF THE EAST- ERN GOGEBIC IRON RANGE. R. C. ALLEN AND L. P. BARRETT. INTRODUCTORY STATEMENT. In this chapter there is presented the results of recent studies of the geology of the Gogebic iron range from T 47 N, R 45 W, east to Gogebic lake, a distance of 15 miles. Former interpretations of the geology of the Gogebic iron range are based almost entirely on early investigations of the United States Geological Survey. Prior to 1914 four years of study of the pre- Cambrian of the region south and east of Gogebic Lake to the Iron River district, including 38 townships adjacent in northern Wisconsin, by the senior writer and his assistants had failed to establish a satisfactory basis of correlation with the rocks of the Gogebic range. (Fig. 1.) Inasmuch as recent drilling for iron ore has supplied important information, unavailable to earlier workers in this field, it was thought that a field study of the eastern Gogebic iron range would probably alter former interpretations of the geology and furnish a better basis of correlation with the pre-Cambrian terranes of adjacent territory and the Lake Superior region. The results of our studies are more satisfactory than we had anticipated and we bdieve are of considerable importance to the progress of pre-Cambrian geology. We acknowledge our indebtedness to Dr. C. R. Van Hise for placing in our hands his early field notes and plats, to Dr. C. K. Leith for helpful suggestions in field conference, to Mr. Robert Selden Rose of Mar- quette, Messrs. Luther Brewer and George Rupp of Ironwood, and the Presque Isle Mining Company for records of drilling and underground exploration. SUMMARY OF THE GEOLOGY BASED ON EARLIER WORK. Van Hise and L...Versandfertig in 6-10 Tagen, [SC: 0.00]<

ISBN: 9780217975131

Michigan Geological Survey, Paperback, English-language edition, Pub by General Books LLC Books Publication-Michigan-Geological-and-Biological-Survey~~Michigan-Geological-Survey General … More...

Michigan Geological Survey, Paperback, English-language edition, Pub by General Books LLC Books Publication-Michigan-Geological-and-Biological-Survey~~Michigan-Geological-Survey General Books LLC This is an OCR edition without illustrations or index. It may have numerous typos or missing text. However, purchasers can download a free scanned copy of the original rare book from GeneralBooksClub.com. You can also preview excerpts from the book there. Purchasers are also entitled to a free trial membership in the General Books Club where they can select from more than a million books without charge. Original Published by: The Survey. in 1915 in 251 pages; Subjects: Nature / General; Science / Life Sciences / Biology / General; Science / Earth Sciences / General; Science / Earth Sciences / Geology;<