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TitleGeology of southeastern Prince Edward Island
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorFrankel, L
SourceGeological Survey of Canada, Bulletin 145, 1966, 70 pages (3 sheets), Open Access logo Open Access
PublisherGeological Survey of Canada
MapsPublication contains 3 maps
Map Info.geological, 1:126,720
Mediapaper; on-line; digital
RelatedThis publication contains Frankel, L; (1966). Surficial Geology Southeastern Prince Edward Island, Geological Survey of Canada, "A" Series Map no. 1208A
File formatpdf
ProvincePrince Edward Island
NTS11E/14; 11E/15; 11E/16; 11L/02; 11L/03; 11L/01
AreaPrince Edward Island,southeast; southeastern PEI
Lat/Long WENS-63.2500 -62.4167 46.2500 45.9167
Subjectsindustrial minerals; structural geology; aggregates; alluvium; boreholes; colluvial deposits; deglaciation; depositional environment; eskers; fabric analysis; fossil distribution, geographic; fossil lists; glaciofluvial deposits; grain size distribution; ice movements; lithofacies; moraines; Gallows Point Anticline, P E I; Kilmuir Syncline, P E I; Wood Islands Anticline, P E I; Pennsylvanian; Permian; Quaternary
Illustrationscorrelation charts; stratigraphic sections
Released1966 01 01; 2015 12 04
AbstractSoutheastern Prince Edward Island is a rolling lowland composed of red beds that show rapid horizontal and vertical facies changes. The 5,425 feet of exposed sediments is divided into three informal rock-stratigraphic units, designated units A (oldest), B, and C (youngest). Units A and B are probably disconformable, and a regional (angular) unconformity apparently separates units B and C. The diverse sediments and rare fossils of unit A show the progressive change from a deltaic- lacustrine environment to a flood plain-alluvial fan environment. Unit B, characterized by sharpstone conglomerates and lithic sandstones containing pebbles of many rock types, is an alluvial fan deposit that indicates rapid uplift and erosion in the source a rea. The well-rounded orthoquartzitic conglomerates, characteristic of unit C, are alluvial plain sediments that suggest low relief and slow erosion in the source area. Unit A is dated as Early Permian because an Ophiacodon tibia, Xenacanthus teeth , and spores suggestive of this age were found in its sediments, and it is correlated, on the basis of lithology, with the rocks in the French River area, in which Bathygnathus borealis Leidy was discovered. The ages of the overlying unfossiliferous sediments of units B and C are not known. The post-Early Permian (post-unit A) tectonic history of the area involves at least two episodes of minor folding (the earlier after the deposition of unit B, and the later after the deposition of unit C), which may indicate more intense deformation on the mainland at these times.

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