Collections of the Minnesota Historical Society (Volume 16, PT. 1) (Paperback)

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: There is no question of the existence of these stages in the weathering of these Kansas artifacts. If the chert were not derived from the same place, and if it were not of essentially uniform characters as to color and hardness, and if the specimens compared were obtained from distant or different localities, the distinctions mentioned would be less likely to be valid. The area is restricted to a portion of the Kansas valley. The foregoing collocation of these differences with the stages of the Pleistocene and of Glacial time, based on the determinations of the Iowa geological survey, is entirely provisional. 3. LOCATION OF THESE ARTIFACTS. These observations are confined to a small tract in the north-east central Kansas lying south from the southern limit of the drift at that place. There is a copious morainic accumulation of northern drift in northeastern Kansas extending nearly to the Kansas valley at this place, and crossing it further east, extending into Missouri south of Kansas City. This carries many large boulders of granite and red quart- zyte derived from Minnesota. Such a morainic accumulation, at the time the ice was present would have dammed the Kansas river and ponded it back so as to flood a portion of the country, and hence would have formed a layer of loess-like clay which would have buried numerous artifacts of earlier origin, and it is not impossible that the Kansas valley at this place was choked with glacial gravel and sand, which also would serve to cover and conceal Early Paleolithic and Paleolithic work. The fact that the ice LOCATION OF THESE ARTIFACTS. 39 limit was near adjacent toward the north and northeast from this small area in Kansas is well known and is indicated on Wright's map of the Glacial geology of the United States and Southern Can...