The book The Pleistocene Deposits in Warren County Iowa was written by author John Littlefield Tilton Here you can read free online of The Pleistocene Deposits in Warren County Iowa book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Pleistocene Deposits in Warren County Iowa a good or bad book?
What reading level is The Pleistocene Deposits in Warren County Iowa book?
To quickly assess the difficulty of the text, read a short excerpt:
Chamberlin, "The Classification of American Glacial Deposits, " Journal of Geology, Vol. Ill, p. 271. 30 THE KANSAN DRIFT 31 is not favored at this point. Here percolation downward through the Kansan is impossible and lateral movement is slow. The pebbles and bowlders in the Kansan are of all sizes up to three and four feet in diameter. These very resistant bowlders are of light- colored granite, red quartzite, and greenstone, but the largest bowlders found are granites and red quartzites, not ...greenstones. Among the bowlders are dark granites which are soft through decomposition of ferromagnesian minerals. Where observed these lie in the weathered portion of the Kansan. The accompanying table will serve to illustrate a grouping of pebbles that may be found : Granite, not decomposed 39 Granite, decomposed 2 Quartzite, red 13 Quartzite, white 9 Quartz 2 Greenstone 22 Chert i Hornblende schist and other hornblende rocks not granite 2 Sandstone, foreign . . 4 Sandstone, local 5 Limestone i 100 Table of percentages of the different kinds of rocks among the pebbles of the Kansan drift found just south of the fairgrounds at Indianola (S.
You can download books for free in various formats, such as epub, pdf, azw, mobi, txt and others on book networks site. Additionally, the entire text is available for online reading through our e-reader. Our site is not responsible for the performance of third-party products (sites).
User Reviews: