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Show Rock Formation rormatlOn Told Toldb3 Toldb b b3 ) Civstals Clystals CiystaIs in III AntarcticNew Antarctic Antarctlc AntarcticNew New YorkGnmy YorkGrimy York -Gnmy Gnmy -Grimy Grimy - Grimy greenish greerush gray grayrocks grayrocks grayrocks rocks broken from the ice carved carvedwmd carvedwind carvedwind wmd wind swept slopes of an extinct vol voleano volnano volcano eano nano in m the almost unexplored Ray Raymond Raymond Raymond mond Fosd rOd road $ ck moun mountains tams of Antarc AntarctIca Antarctica Antarctica tIca by Dr Thomas C Poulter sen senlor senlot senior ByrdAntarct lor lot scient st of the second Byrd Antarct c exped tion may mcrease increase mcreaseour increaseour increaseour our knowledge of how rocks are areformed areformed areformed areformedReporting formed formedReportmg formedReporting Reporting Reportmg the results of a study studyof studyof studyof of these rocks to the Geological So Soclety Society Society clety ciety of America Amenca Dr C N Fenner Fennerrock Fennerrock Pennerrock rock expert of the Carneg e a InstI InstItut Institut Institut tut on s geophysical laboratory In InWashington inWashington inWashington Washington finds that old ideas of ofrock ofrock olrock rock formation need to be reViewedUntIl reviewedUntil reviewed reviewedUntil Until recently it was belleved believed bellevedthat believedthat believedthat that molten rocks deep under thearth the theearth theearth ( earth s crust resembled basalt a ; adark dark heavy rock of which the Pall Pali Pallsades Palisades Pahsades sades of the Hudson . , , the Giant's Giants ' Causeway GianfiCauseway Giant'sCauseway in Ireland the Devll Devils s , ' DevilPostp sPostp DevilsPostp Postp Ie le in California Cal1orma ! and man many ; manyother other famous clifllike cllfIhke structures are aremade aremade arimade made As these molten rock rockmasses rockmasses rodmasses masses came near the surface eer cer eertam certam certain tam compounds in m them crystallize'as crystallizeas crystallizedas crystallized crystallizedas ' as the rock cooled leaving leavlllg otbcmineral other othermmeral othermineral mmeral mineral compounds molten until fur fmther ther further cooling took place and chang changmg Changing chaniing ; chenical chemical chewteal mg ing as cooling eoolmg went on OD the chem chew ical teal composition of o1 the remammg remaining remammgmolten remainingmolten remainmmolten molten material matenaL matenaLAccordmg . . whichas whichhas According Accordmg to this theory which has alkalme alkaline received much support alka alk ; firsfrom firstfrom hoe lme line ma materials tenals should crystallize first ; t from leaVlllgIt leavingit a molten rock magma leaVlllg leaving leavmit It more acid than before The rocks ; rodfrom rocksfrom from the Antarctic however do not ) nifollow notfollow follow the theoreticalrules theoretical rules of ofchange ofchange ichange ) change geophyslCIS15 geophysiGists suggesting suggestmg to the geophysl geophysi geophyscists CIS15 Gists that laboratory cond tions tlons cnot do donot donot [ not duplicate dupllcate field conditions very veiclosely closely veryclosely and that tests should be bemade bemade Imade made of the rocks themselve0 themselveo themselves and artheir andtheir their materials and not of lab labora ora . labor.tory labortory oratory laboratory tory specimens under simpler con codi'ions codiions conw'lOns conOnions w'lOns wlOns Onions ' * ' than those t t0 ' ' " ' " -0- 0 - eXlstlllg existing ' * " " ' * " " - In nature ' |