Abstract
A comparison of aeromagnetic profiles with bedrock geology in the McMurdo Sound area indicates high-amplitude anomalies associated with the McMurdo volcanics and no significant anomalies associated with rocks in the crystalline basement complex. The McMurdo volcanics are the only rocks yet identified in the Transantarctic Mountains capable of causing the anomalies (greater than 200 γ in amplitude) that are observed in the icecovered areas adjacent to the mountain system.
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