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Excerpt from Geysers of Yellowstone National ParkThe deposits of which the beautiful geyser cones and terraces consist are mainly silica, for the slightly alkaline waters in the present geyser areas come from rhyolites. These deposits are built up by thin layers often intricately fluted or of a lacework pattern and mostly of pure white color. The region is about feet above sea level and the groups of geysers are mainly in valleys traversed by ...

Excerpt from Geysers of Yellowstone National ParkThe deposits of which the beautiful geyser cones and terraces consist are mainly silica, for the slightly alkaline waters in the present geyser areas come from rhyolites. These deposits are built up by thin layers often intricately fluted or of a lacework pattern and mostly of pure white color. The region is about feet above sea level and the groups of geysers are mainly in valleys traversed by ...

Excerpt from Catalogue and Index of Contributions to North American Geology, 1732-1891The entries are comprised in two classes, which are arranged in sin gle alphabetic sequence. They are as follows.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digita...

Excerpt from Catalogue and Index of Contributions to North American Geology, 1732-1891The entries are comprised in two classes, which are arranged in sin gle alphabetic sequence. They are as follows.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digita...

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Excerpt from Record of North American Geology for 1891Notes to accompany a tabulation of the igneous rocks, based on the system of Professor H. Rosenbush.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the orig...

Excerpt from Preliminary Report on the Geology and Water Resources of Nebraska West of the One Hundred and Third MeridianNumerous data in regard to irrigation in the Niobrara River, White River, and Hat Creek basins were kindly furnished by Mr. J. M. Wilson, the State engineer.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an import...

Excerpt from Preliminary Report on the Geology and Water Resources of Nebraska West of the One Hundred and Third MeridianNumerous data in regard to irrigation in the Niobrara River, White River, and Hat Creek basins were kindly furnished by Mr. J. M. Wilson, the State engineer.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an import...

Excerpt from Artesian Well Prospects in the Atlantic Coastal Plain RegionSouthern New J ersey - Continued. Well prospects in the various counties of southern New J ersey - Cont'd, Southern and eastern Ocean County Monmouth County Eastern Middlesex County Eastern Mercer County Western Burlington County Western Camden County Gloucester County Salem County Western Cumberland County Pennsylvania Philadelphia region List of wells in the Philadelphi...

Excerpt from Preliminary Report on the Geology and Water Resources of Nebraska, West of the One Hundred and Third MeridianPi. XI has for its base a topographic map of the region, with contour lines 100 feet apart. These contour lines indicate heights above the sea, and they are numbered accordingly. The lines for every even 500 feet are made heavier than the others. Contour lines are lines of equal elevation, consequently they are drawn along ...

Excerpt from Preliminary Report on the Geology and Water Resources of Nebraska, West of the One Hundred and Third MeridianPi. XI has for its base a topographic map of the region, with contour lines 100 feet apart. These contour lines indicate heights above the sea, and they are numbered accordingly. The lines for every even 500 feet are made heavier than the others. Contour lines are lines of equal elevation, consequently they are drawn along ...

Excerpt from Artesian Well Prospects in the Atlantic Coastal Plain RegionSouthern New J ersey - Continued. Well prospects in the various counties of southern New J ersey - Cont'd, Southern and eastern Ocean County Monmouth County Eastern Middlesex County Eastern Mercer County Western Burlington County Western Camden County Gloucester County Salem County Western Cumberland County Pennsylvania Philadelphia region List of wells in the Philadelphi...