This is a preview. Log in through your library . Abstract Nearly similarly oriented xenoliths of hornblende gneiss in granite gneiss and granite pegmatite at Antietam Lake, Berks County, suggest that ...
THE opposing views of magmatists and transformists have resulted in a heated controversy on the origin of granite, and a recent conference on this question held by the Geological Society of America 1 ...
A PART from the question of the time-continuity of the progressive series represented by, say, the Barrovian zones, there is the chemical continuity to be considered. How far do the zones of Barrow ...
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