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. 1905 Excerpt: ...striking indication of this is found in the position of an immense mass of chalk which is included in the moraine about five miles east of Malmo. This chalk mass extends three miles in a northeast and southwest direction, averages 1,000 feet in width, and from 100 to 200 feet in thickness, being, so far as I know, 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. 1905 Excerpt: ...striking indication of this is found in the position of an immense mass of chalk which is included in the moraine about five miles east of Malmo. This chalk mass extends three miles in a northeast and southwest direction, averages 1,000 feet in width, and from 100 to 200 feet in thickness, being, so far as I know, the largest boulder, or glacially transported mass, that has been described. It is everywhere covered with till, and almost everywhere has till underneath it. Its regular position is between what we should call the upper and the lower till, the upper till being yellow and the lower blue. But in one place, which I examined, the lower or blue till was both above and below it. While the chalk is together in one mass, it everywhere shows signs of immense pressure and disturbance, being broken up into small cubes, and having its flint nodules cracked and arranged in lines simulating stratification. The upper part of the chalk has also been extensively sheared off and mingled with the till. This mass of chalk has been brought fully to light through its commercial value, eight or ten companies having mined or quarried it for many years. It belongs to the true soft chalk of Cretaceous age. and was supposed by the earlier geologists to indicate a Cretaceous area, where it was least to be expected, since the chalk which mainly underlies the peninsula belongs to the Trias or Lias. The determination of its glacial transportation has therefore solved a very difficult problem. It must have been picked up bodily from the shores or bed of the Baltic sea. being transferred westward many miles to its present position. Dr. Hoist is bringing to light much new evidence bearing upon the unity of the Glacial period, and is more than ever confirmed in his adhesion to the...
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Add this copy of The American Geologist; Volume 36 to cart. $68.53, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2019 by Wentworth Press.
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