Field Notebook: Nova Scotia 1912
Page 43
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Transcription
Parstoro July 8-1912 Monday. Started out in the morning along the shore east of Parstoro. The first walks saw blue brick-red sandy micaceous shales and sandstone with local zones of conglomerate. Dip to the north about 35° . The series is distinctively of con- tinental origin. The character of any bed does not continue far horizontally. The conglomerates are very coarse, rounded semi-rounded and flat slabs up to 18 inches long. The pieces are of sandy shale, of the older Penn. and Triassic ages. sandstone and conglomerate, none look like the darker arenaceous limestones of the Windsor or Pennsylvanian series. Channels suffer dep and one more along an old joint face filled with the boulder conglomerate. Strong current action of torrential charac- ter is apparent at many points. As we go eastward through these continental deposits the con- glomerate becomes once and more decided within a few hundred feet further and all at once we are upon the erosim contact, a sharp contact, with the so-called "Dioronic" out of which we yesterday got Leacia Ridge. This contact shows clearly that the Pennsylvanian had been thrown into mountain folds before (these same ones saw yesterday in Forest Bay) these continental beds were wedded down the mountain side into the first water valley below. There one have the ancient mountain side of later Pennsylvanian time and the valley deposits set down against it. These younger deposits have since been deformed, or that their present dip is steeper than the original deposition slope.