Proceedings of the Dorset Natural History and Antiquarian Field Club Volume 16 baixar o livro de graça

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. 1895 Excerpt: ... The South of England shows no proof of ever having been covered by an ice-shed, neither are there signs of any deposits resembling boulder clay or till. It must, however, have been a period of intense cold, accompanied with alternations of upheaval and submergence. The last one, at least the last of any. importance, lifted this part of England to a higher level above the sea than it is now. A succeeding depression disconnected England from Ireland and the Continent. Previous to this disconnection Palaeolithic man had reached what is now England, and probably after the Ice Age had passed away. The lower Tertiary beds which covered the chalk, and of which Blackdown, Bradford Peverell, Whaddon, and Bincombe are outliers, have been removed by denudation, leaving on the subjacent surface the heavy insoluble materials, such as sarsen stones, flints, sandstones, &c. These sarsen stones formed portions of thick beds of quartzose sand which here and there became concreted by the filtering of the sea-water. They are not usually in a continuous mass, but in detached blocks, while the remainder of the sands are left unconsolidated and disintegrated, and the stones scattered over the surface. In shape they are more or less quadrangular, longer than broad and much broader than thick. In ancient times they were used in cromlechs, standing stones, and ancient circles, as at Stonehenge, Winterborne, and Portesham. They are used also to protect the corners of village streets and highways, and occasionally as building stones. They may be seen, too, on our heaths doing duty for boundary stones. They form partly the material of Deverel Barrow, apparently for the protection of the urns it contained. Aubrey, 1656-84, says "They (the sarsen stones) lie scattered all over...