This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 Excerpt: ...the larger part of the detritus that is formed, is normally carried much farther away from the front of the sheet than the sand, and that this in time goes farther than the pebbly matter. We may thus reckon that the Barnstable clays are the outer or relatively remote accumulations of an ordinary glacier, and that the ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 Excerpt: ...the larger part of the detritus that is formed, is normally carried much farther away from the front of the sheet than the sand, and that this in time goes farther than the pebbly matter. We may thus reckon that the Barnstable clays are the outer or relatively remote accumulations of an ordinary glacier, and that the Truro sands were laid down when the ice front was nearer the present shore line. If this view be accepted, we must then suppose that in the ice epoch which brought about the formation of this series--probably not the last Glacial epoch--the glacial sheet did not quite attain to this field, and that the land lay at a lower level than it does at present. As is clearly indicated by the extensive erosion which followed this period of deposition--erosion in which the glacier appears to have had no part--the time intervening between the formation of the Truro beds and the advance of the ice sheet which deposited the till, moraines, kames, etc., of the district must have been great. It was assuredly many times as great as that which has elapsed since the last of the ice sheets left the field. Although the matter has been before stated in a fragmentary manner, it may be well again to call attention to the accumulation of evidence which exists in this field going to show the very great length of the time which has elapsed since the close of the Pliocene. In this interval there were evidently three distinct periods of erosion, each of long duration, and an equal or greater number of widely varying changes in the position of the land in relation to the sea. As measured against the geological work which was done in these periods, that brought about since the close of the last ice advance is relatively of little account, being limited to slight changes of l...
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Fine. Trade paperback (US). Glued binding. 118 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
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