Patuxent Formation Description of Diabase and Basalt Samples from the Neptune Range

11 Patuxent Formation Description of Diabase and Basalt Samples from the Neptune Range 

418 (10 Sa. 11.166) Gorecki Peak, Schmidt HiUs. Medium grained, collected near the base of a 55-m-thick sill that intruded the Patuxent Formation. The diabase sill is located about 30 m below a rhyolite flow. 

419 (lOSb.ll.lbb) Gorecki Peak, Schmidt HiUs. Collected 27m above sample 418 from the same sill. 

421 (lOSd.l 1.1.66) Gorecki Peak, Schmidt Hills. Fine grained, collected about 1.8 m below the top of the same sill as samples 418-420. 

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