A gravity profile across Newfoundland

Weir, Harvey (1970) A gravity profile across Newfoundland. Masters thesis, Memorial University of Newfoundland.

[English] PDF (Migrated (PDF/A Conversion) from original format: (application/pdf)) - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Download (7MB) [English] PDF - Accepted Version Available under License - The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. (Original Version)

Abstract

A gravity profile, with 0.8 km station spacing, has been established along the Trans-Canada highway between Port-aux-Basques and Come-by-Chance, Newfoundland. A modified "one-base" barometric method gave improved elevation results, yielding a standard deviation which is less than one-half that associated with the traditional "one-base" method. Techniques have been devised to facilitate the determination of various model representation errors, and for making end corrections. A "winding-route" apparent anomaly effect has been studied. -- A qualitative profile interpretation has suggested the presence of unmapped gypsum deposits (south-western Newfoundland) and intrusive bodies (at several locations along the route). A detailed study between Notre Dame Junction and Traytown shows the Ackley batholith to be, in cross-section along the route, a funnel-shaped lopolith and this region to be underlain by an intermediate to basic layer.

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