Science, Том 23John Michels (Journalist) American Association for the Advancement of Science, 1894 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 73
... Archæan granite of the Giant's Range . Second . Green Schists of the Keewatin - Archæan , dipping at high angles to the south . Third . Taconic . Fourth . Fifth . Sixth . Quartzite , unconformable on first and second Iron ore and ...
... Archæan granite of the Giant's Range . Second . Green Schists of the Keewatin - Archæan , dipping at high angles to the south . Third . Taconic . Fourth . Fifth . Sixth . Quartzite , unconformable on first and second Iron ore and ...
Стр. 85
... Archæan area of this region on its western side . I use one color for each period , as now recognized by the United States gologists , omitting , however , the Pleistocene or at least the drift deposits . For pigments I use the analin ...
... Archæan area of this region on its western side . I use one color for each period , as now recognized by the United States gologists , omitting , however , the Pleistocene or at least the drift deposits . For pigments I use the analin ...
Стр. 86
... Archæan exposures , so that it may be evident in what basin or valley each Cambrian section lies ; then the mapping of the continent , first in earlier Cambrian and then in later Cambrian times , presents a very instructive picture to ...
... Archæan exposures , so that it may be evident in what basin or valley each Cambrian section lies ; then the mapping of the continent , first in earlier Cambrian and then in later Cambrian times , presents a very instructive picture to ...
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Meeting of the Iowa Academy of Sciences | 10 |
ROUGHING IT WITH AN ECLIPSE PARTY | 42 |
ESTERBROOKS | 56 |
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