 | American Philosophical Society - Learned institutions and societies - 1880
...at the saute lime, present tho greatest difficulties to study. Composed for the most, part of solt, beds, they suffered extensive denudation, during the...the close of the Carboniferous and the beginning of tho Tertiary, during which time they were, for the most part, exposed above the level of the sea ;... | |
 | Iron - 1889 - 740 pages
...place between the deposition of the " Whitehaven Sandstone " and the basal Permian conglomerate, ie, in the interval between the close of the Carboniferous and the beginning of the Permian. The author is inclined to believe in hot springs as the agent of deposition. Other Brilish... | |
 | Thomas Chrowder Chamberlin - Electronic journals - 1906 - 1060 pages
...fauna obtained here Derby regards as of the same age as that of the Tapajos. Of all the Palaeozoic deposits of the Amazonas, those of the Carboniferous...the most part, exposed above the level of the sea Mr Smith, who has best studied these deposits, is of the opinion that their total thickness is not... | |
 | Thomas Chrowder Chamberlin - Electronic journals - 1906 - 850 pages
...fauna obtained here Derby regards as of the same age as that of the Tapajos. Of all the Palaeozoic deposits of the Amazonas, those of the Carboniferous...study. Composed for the most part of soft beds, they Buffered extensive denudation, during the interval between the close of the Carboniferous and the beginning... | |
 | Tom Eastwood - Coal - 1930 - 168 pages
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 | 624 pages
...and I refer to the same age the black shale found by Siir. Penna on the Xingu. Of all the Palreozoic deposits of the Amazonas, those of the Carboniferous...between the close of the Carboniferous and the beginning (if the Tertiary, during which time they were, for the most part, exposed above the level of the sea... | |
 | Iron and Steel Institute - Iron industry and trade - 1889 - 664 pages
...place between the deposition of the " Whitehaven Sandstone " and the basal Permian conglomerate, ie, in the interval between the close of the Carboniferous and the beginning of the Permian. The author is inclined to believe in hot springs as the agent of deposition. Other British... | |
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Palteozoic deposits of the Amazonas, those of the Carboniferous occupy the most extensive area and, at the same time, present the greatest difficulties to study. Composed for the most part of soft beds, they suffered extensive denudation, during the interval... 