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Lithographic Composition of North America

Lithographic Composition Plutonic 10% of North America Meta 13% Sedimentary Volcanic 66 % 11% Baffin Bay Labrador Sea Hudson Bay Plutonic, alkaline complex Plutonic, alkaline diorite gabbro and syenite Plutonic, anorthosite Plutonic, charnockite Plutonic, early tonalite plutons in the Superior province Plutonic, felsic and intermediate rocks Plutonic, felsic and mafic rocks Plutonic, felsite Plutonic, gabbro-anorthosite Plutonic, granite Plutonic, intermediate and mafic rocks Plutonic, intermediate rocks Plutonic, late felsic and intermediate plutons in the Superior provihce Plutonic, mafic and ultramafic rocks Plutonic, mafic rocks Plutonic, rapakivi granite Plutonic, tonalite Plutonic, two-mica granite Plutonic, ultramafic rocks Plutonic, undivided granitic rocks Gulf of Mexico Volcanic, alkaline mafic rocks Volcanic, alkaline rocks Unknown Values Volcanic, bimodal alkaline rocks Metamorphic Volcanic, bimodal rocks (mafic and alkaline mafic) Metamorphic, impact breccia Volcanic, felsic and intermediate rocks Volcanic, felsic rocks Metamorphic, mafic gneiss Volcanic, interlayered sedimentary and alkaline volcanic rocks Metamorphic, mainly tonalite gneiss Volcanic, interlayered sedimentary and mafic volcanic rocks Metamorphic, marble Volcanic, interlayered sedimentary and volcanic rocks Metamorphic, orthogneiss Volcanic, intermediate and mafic rocks Metamorphic, orthogneiss and paragneiss Volcanic, intermediate rocks Metamorphic, paragneiss Volcanic, ma fic rocks Metamorphic, sedimentary and volcanic gneiss Volcanic, undivided volcanic rocks VE Metamorphic, syenite gneiss Metamorphic, undivided crystalline rocks (seafloor units may include a variety of metamorphosed rock) Sedimentary, Metamorphic, undivided gneissic rocks Sedimentary, carbonate Metamorphic, volcanic gneiss Sedimentary, evaporite COLOMBI Bering Sea Bering

Lithographic Composition of North America

shared by CawdreyChris on May 01
Simple geologic map I made for an Earth Science class. I finally had the chance to use ESRI's view from space projection which was rather exciting.


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