Show simple item record

dc.creatorSwain, F. M.en_US
dc.creatorPalacas, J. G.en_US
dc.creatorKraft, J. C.en_US
dc.identifier.citationThe Ohio Journal of Science. v66 n2 (March, 1966), 116-123en_US
dc.descriptionAuthor Institution: University of Minnesota, Minneapolis, Minnesotaen_US
dc.description.abstractHigh-calcium limestones occur in the upper part of the New Market Formation, of Lower Middle Ordovician age, in Franklin and Cumberland Counties, Pennsylvania. The high-calcium facies of the New Market Formation is represented by sublithographic limestone or vaughanite, which probably formed in quiet water, low-energy environments such as intershoal lagoons, or in protected bays similar to the present-day Florida Bay environment. Rapid facies changes are characteristic of the strata. The better grade of stone lies in the upper 100 to 125 feet of the New Market Formation and averages 95-97% calcium carbonate. Silica and magnesia are about equal in amount as impurities. One high-calcium belt extends from the Maryland state line through Chambersburg and Newville to beyond Carlisle. The strata in this belt are structurally complex, which requires careful field study and core-drilling prior to exploitation. Stone suitable for blast-furnace flux is present in relatively large amounts, but stone for open-hearth use or portland cement requires more selective quarrying.en_US
dc.format.extent660362 bytes
dc.rightsReproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given.en_US
dc.titleHigh-Calcium Limestone Deposits of Cumberland Valley, Pennsylvaniaen_US

Files in this item


Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.

This item appears in the following Collection(s)

Show simple item record