 The reason for believing that contemporaneous erosion is the correct explanation rather than faulting is that the sandstone occurs in a region where faults are infrequent and, when present, have a very small vertical displacement. Furthermore, Coal Measure...  Annual Report for ... with Accompanying Papers - Seite 150von Iowa Geological Survey - 1901Vollansicht - Über dieses Buch
 | William Berryman Scott - 1897 - 622 Seiten
...produced when a ^ the still soft and Fnt has ceased to the same or a different kind of material as was thrown down before. This structure requires only...except along the line of the channel or channels. In Fig. 119 is an example of this structure and shows where a channel in an ancient sea-bottom of calcareous... | |
 | 1901 - 582 Seiten
...ravine at its base. The limestone conglomerate spoken of in the above section is by the quarry men usually known as "bastard" limestone. The sandstones...Measure shales are found lying against the sandstone and unconformable with it. Thus it seems that the area now occupied by the Red Rock sandstone was originally... | |
 | Iowa Geological Survey - 1901 - 598 Seiten
...may not always be easy to distinguish it from an unconformity, the difference becomes apparent when H wider area is examined. If the structure be one of...Measure shales are found lying against the sandstone and unconformable with it. Thus it seems that the area now occupied by the Red Rock sandstone was originally... | |
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