Geologic Interpretation of Magnetic and Gravity Data in the Copper River Basin, Alaska
نویسندگان
چکیده
________________________________________ Introduction __ ___________________________________ Area covered.__________________________________ Aeromagnetic survey.___________________________ Gravity survey.________________________________ Acknowledgments--.. __1________________________ Geology __ __ ____________ _ Rock units_____________________________________ Carboniferous and older rocks.______-_____-_Permian and Triassic rocks_________________ Jurassic volcanic and associated rocks.,._____ Jurassic and Cretaceous sedimentary rocks_____ Intrusive rocks_________________________ Tertiary sedimentary rocks_________________ Cenozoic volcanic rocks____________________ Physical-property measurements._________________ Structure___ ___ _______ ____________ Magnetic and gravity interpretation_________________ Techniques____________________ ___ _______ Regional magnetic patterns and gravity anomalies_ Anomalies in the northern part of the surveyed areaExcelsior Creek anomalies._________________ Maclaren-Gulkana anomalies ________ ___ ____ Page 135 135 135 135 136 137 137 137 137 137 138 138
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