Bulletin of the Geological Society of America, Volume 12The Society, 1901 - Geology Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately. |
Contents
| 26 | |
| 27 | |
| 29 | |
| 41 | |
| 45 | |
| 57 | |
| 65 | |
| 92 | |
| 173 | |
| 174 | |
| 189 | |
| 195 | |
| 197 | |
| 217 | |
| 266 | |
| 271 | |
| 92 | |
| 92 | |
| 93 | |
| 98 | |
| 109 | |
| 129 | |
| 147 | |
| 164 | |
| 164 | |
| 169 | |
| 301 | |
| 313 | |
| 343 | |
| 377 | |
| 395 | |
| 406 | |
| 445 | |
| 446 | |
| 479 | |
| 492 | |
Other editions - View all
Common terms and phrases
anticlinal appears Archean Arkansas basin beach beds biotite Black shale Cambrian canyon Carboniferous clay cliffs Clinton Coal Measures color conglomerate creek Cretaceous crystals deformation deposits depth Devonian diabase drift east eastern eroded erosion evidence exposures farther faults fauna feet feldspar FIGURE flows folding formation formed fossils Geological glacial lakes glacier gneiss gorge granite gravel hornblende ice-lobe ice-sheet islands kettles Keweenawan Kittatinny limestone lake Superior lava layers limestone locality lower marine miles Minnesota Mississippi mountains Nevada northern occur Ordovician outlet Paleozoic plate plateau Pliocene porphyritic portion potholes present probably quarry quartz quartzite region Report ridges rocks Saint Croix river Saint Louis river sand sandstone scarp schists sediments shore side Silurian slopes southern stage strata streams structure surface Survey synclinal terraces Tertiary thickness topography Trenton U. S. Geol unconformity upper valley volcanic weathering western