The First One Hundred Years of American Geology
Author: George Perkins Merrill
Publisher:
Published: 1924
Total Pages: 888
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: George Perkins Merrill
Publisher:
Published: 1924
Total Pages: 888
ISBN-13:
DOWNLOAD EBOOKAuthor: George Perkins Merrill
Publisher:
Published: 1969
Total Pages: 773
ISBN-13:
DOWNLOAD EBOOKAuthor: George Perkins Merrill
Publisher:
Published: 1924
Total Pages: 773
ISBN-13:
DOWNLOAD EBOOKAuthor: George P. Merrill
Publisher:
Published: 1924
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: George Perkins Merrill (géologue).)
Publisher:
Published: 1924
Total Pages: 773
ISBN-13:
DOWNLOAD EBOOKAuthor: George Perkins MERRILL
Publisher:
Published: 1964
Total Pages:
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DOWNLOAD EBOOKAuthor: Leonard Gilchrist Wilson
Publisher:
Published: 1998
Total Pages: 456
ISBN-13:
DOWNLOAD EBOOKLyell first came to America in 1841, remaining for more than a year and touring widely. His immediate reason for the journey was to deliver the prestigious Lowell lectures in Boston. His larger purpose was to study the geology of North America, hoping that the vast scale of the continent - its mountain ranges, plains, Great Lakes, and rivers - would confirm his belief in the uniformity of geological history.
Author: Wayne I. Anderson
Publisher: University of Iowa Press
Published: 1998
Total Pages: 444
ISBN-13: 9781587292675
DOWNLOAD EBOOKIowa's rock record is the product of more than three billion years of geological processes. The state endured multiple episodes of continental glaciation during the Pleistocene Ice Age, and the last glacier retreated from Iowa a mere (geologically speaking) twelve thousand years ago. Prior to that, dozens of seas came and went, leaving behind limestone beds with rich fossil records. Lush coal swamps, salty lagoons, briny basins, enormous alluvial plains, ancient rifts, and rugged Precambrian mountain belts all left their mark. In "Iowa's Geological Past, " Wayne Anderson gives us an up-to-date and well-informed account of the state's vast geological history from the Precambrian through the end of the Great Ice Age. Anderson takes us on a journey backward into time to explore Iowa's rock-and-sediment record. In the distant past, prehistoric Iowa was covered with shallow seas; coniferous forests flourished in areas beyond the continental glaciers; and a wide variety of animals existed, including mastodon, mammoth, musk ox, giant beaver, camel, and giant sloth. The presence of humans can be traced back to the Paleo-Indian interval, 9,500 to 7,500 years ago. Iowa in Paleozoic time experienced numerous coastal plain and shallow marine environments. Early in the Precambrian, Iowa was part of ancient mountain belts in which granite and other rocks were formed well below the earth's surface. The hills and valleys of the Hawkeye State are not everlasting when viewed from the perspective of geologic time. Overall, Iowa's geologic column records an extraordinary transformation over more than three billion years. Wayne Anderson's profusely illustrated volume provides a comprehensive and accessible survey of the state's remarkable geological past.
Author: Louis Valentine Pirsson
Publisher:
Published: 1924
Total Pages: 768
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1925
Total Pages: 718
ISBN-13:
DOWNLOAD EBOOKIncludes the Proceedings of the Royal Geographical Society, formerly published separately.