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TitleGravity measurements in southern Ontario
AuthorThompson, L G D; Miller, A H
SourcePublications of the Dominion Observatory vol. 19, no. 9, 1958, 58 pages (3 sheets), (Open Access)
PublisherCanada Department of Mines and Technical Surveys
MapsPublication contains 2 maps
Map Info.geophysical, gravity anomalies, 1:253,440
Map Info.geophysical, gravity anomalies, 1:1,267,200
Mediapaper; on-line; digital
File formatpdf
NTS30 /NW; 31 /NW; 31 /SE; 31 /SW; 40 /NE; 41 /NE; 41 /SE
Subjectsgeophysics; gravity interpretations; gravity interpretations; gravity surveys, ground; Beekmantown Group; Billings Formation; Black River Group; Carlsbad Formation; Chazy Group; Collingwood Group; Eastview Formation; Gloucester Group; Lorraine Group; March Formation; Nepean Formation; Ottawa Formation; Oxford Formation; Queenston Formation; Richmond Group; St Martin Formation; Trenton Group; Precambrian; Paleozoic; Cambrian; Ordovician
Illustrationstables; gravity profiles; cross-sections; location maps
Released1958 01 01; 2018 10 09; 2018 11 13
AbstractThe results of over 1,000 gravity observations made in southern Ontario up to 1952 have been adjusted to a common datum and are presented in the form of tables of principal facts and two Bouguer anomaly maps. A general analysis of the anomaly pattern is given which leads to the conclusion that the overlying Palaeozoic rocks have little effect on the regional gravity pattern and it is believed that the major anomaly trends are caused by belts of different densities in the Precambrian basement.