Index map
The Adirondack Mountains form most of northern
New York state. They are an uplifted complex of Precambrian metamorphic
rocks - like the Llano Uplift in Texas,
a part of an ancient (Grenville) continental province. The Paleozoic
sedimentary strata that now flank these older rocks once covered
them. The intersecting faults and joints responsible for the rectilinear
surface texture of the Precambrian rocks developed from release
of pressure on this once deeply buried metamorphic complex.
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