 ... consolidated sands, clays, marls, etc., in part of colors unknown to the drift, and probably representing Tertiary strata underlying the drift and filling deep depressions or valleys in the harder formations or true bed rocks of the region. The artesian...  The American Journal of Science - Seite 1851907Vollansicht - Über dieses Buch
 | Massachusetts. Committee on Charles River dam - 1903 - 780 Seiten
...formations or true bed rocks of the region. The artesian well of N. Ward & Co., on Spectacle Island, 560 feet deep, passed through at least 360 feet of unconsolidated...about 100 feet, is in soft materials comparable with tli и Tertiary deposits of Martha's Vineyard and Long Island, toa depth of at least 500 feet. Following... | |
 | Massachusetts. Committee on Charles River dam - 1903 - 762 Seiten
...feet deep, passed through at least 360 feet of uncousolidated material, only part of which could bo regarded as glacial drift; and the deep well at the...materials comparable with the Tertiary deposits of Martha'SiVincyard and Long Island, to a depth of at least 501) feet. Following up this idea, it is... | |
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