. The Palisades of the Hudson : their formation, tradition, romance, historical associations, natural wonders and preservation. A. Diabase Cro&6 ;^ Qeoba^ieAu Fo^MATieN. op The C. forak4wGn«i6S B. SaiwistoHc Rio«e amo AojA«e»iT Teni^iTdRv at eo4ewAT£i«, w-s: O. iKWMi Utn<sQ»( Diagram Showing Geological Formation of the Palisades Ridge. The Palisades of the Hudson. % Grooves in the Palisades Rocks, Showing Glacial Action and Movement of the Ice. upwards the igneous formation. It must not be imagined thatthe ridge then assumed its present appearance. Indeed, theint
. The Palisades of the Hudson : their formation, tradition, romance, historical associations, natural wonders and preservation. A. Diabase Cro&6 ;^ Qeoba^ieAu Fo^MATieN. op The C. forak4wGn«i6S B. SaiwistoHc Rio«e amo AojA«e»iT Teni^iTdRv at eo4ewAT£i«, w-s: O. iKWMi Utn<sQ»( Diagram Showing Geological Formation of the Palisades Ridge. The Palisades of the Hudson. % Grooves in the Palisades Rocks, Showing Glacial Action and Movement of the Ice. upwards the igneous formation. It must not be imagined thatthe ridge then assumed its present appearance. Indeed, theintrusion did not even reach the surface of the surroundingcrust. For centuries it lay buried far beneath. It remainedfor processes working through following centuries to disclosethe Palisades to outward view. When unexposed to outward airigneous rock in cooling shrinks and breaks off in sharp, perpen-dicular or columnar formation. This occurred along the en-tire Palisades Ridge. Then began the transformation whichgave us the majestic cliffs of to-day. The deposits above andbeside the ridge were worn away by erosion. North and southalong the present bed of the Hudson occurred an immensefault or slip in the earths crust. This caused the Hudsonto flow in a veritable canyon, which recent borings oppositeThirty-second Street, New York, show to have been 300 feetdeep. This gorge extended far ou
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