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Which types of rocks make up the Talkeetna Mountains?
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The Talkeetna Mountains are primarily composed of a granite batholith that was intruded during the Mesozoic Era.1
In addition to this central granitic core, the flanks of the highlands feature exposed Paleozoic and Mesozoic sediments and volcanic rocks. Furthermore, some Cenozoic volcanic flows are present in the southeastern portion of the range.1