Show GREEN RIVER I OIL OL SHALE IS BIG BIC IN UTAH I Geologist b Te s of Formation i With ith i l Rangely y Oil Field I as Center I Relative to tho the oil shale general ge geological Je- Je e- e olo formation in n Utah and Co Colorado Colorado Colo Colo- orado o- o rado Dean n E E- Winchester of ot the United States geological survey sur says In part The basin Is a broad shallow sh whoso whose central portion Is occupied oc occupied occupied oc- oc by the Green River IU and younger formations The Green River beds are anI only lI slightly tilted at most places around the thc margin of or the tine basin b but the older oIlIer formations dip at much greater angles only a n few miles beyond the limits of ot the tho Green river formation Tho Douglas anticline which extends I southward rd from Hancl brings a up the lire erdo and Wasatch formations formations formations forma- forma I and perhaps entirely separates I the main Colorado area of ot the Green GreenI River lIver formation from the much larger I area In northeastern Utah Ut an and It Is al almost almost al- al most most certain that the areas aren of oil oll- I fil-I I yielding shale are completely complete ed cd Although h the Gr Green en River formation forma forma- I Lion tion dips sharply shanI maximum observed dip 28 8 degrees toward the Interior of oC the thc basin at its margin marln alon along the tho north and east cast sides of oC tho Colorado I area the dip decreases vcr very rapidly so that a few tew miles back of oC the thc margin the thc shale is horizontal or dips only sll slightly hU Small faults were ob observed at nt a few Places although h It In is probable that thit tho I broad et movement w ent which lc produced c uc lh the tho great anticline structure gave rise to fracture zones or cracks and faults at atman man many other places The Thc great veins of or In the vicinity of ot Dragon DraSon Utah are arc cracks filled with the aa- aa phallic material West est of oC tho the hills In tho the eastern castern part of ot the tho area are studied a fracture zone cutting the Green River formation Is la filled tilled with a avery avery avery very light yellowish brown hydrocarbon bon specific gravity which does not answer answel tho the description of or any of ot the thc ordinary The Thc deposit may not be sufficiently extensive to tobe tobe tobe be of oC economic importance but It Is of ot com considerable scientific Int interest rest The fracture zone In which tine the material Is 18 found is two or of three feet wide and has been traced for tor several miles In a general southeast northwest-southeast direction Several Se small prospects have been opened along alonS' It It I. I On creek creck a n heavy brown sandstone rests on a vcr very vey Irregular surface and anel the shale shalo beneath I la Is very en much distorted exhibiting In places very definitely overturned folds as ashell aswell well hell as faults on oil a small scale It Is isI I not at all impossible that tho the brown sandstone marks marl s thc the base of oC a formation formation formation for for- mation which should be separated from I that below but In this paper It IH is In Included Included In- In eluded In the tho upper part of ot the tho Green GreenI River formation The massive sandstone sand Rand sandstone I stone appears to fill 1111 channels yet vet the distorted condition of ot the thc shale beI be- be I would sU suggest Jest that the shale was wasi 1 i still In a a. plastic condition after thc the I deposition of oC part of ot the tho sand and anel that I the sand settled giving rise to the man many peculiar forms form which aro are I exhibited in the beds beneath After this settling the tho deposition o of sand was continued over o the tho ell edges es of I tho the portions of oC the sand which had been displaced This to appears represent represent sent a n change chane In conditions of oC deposition deposition deposition tion which ma may have o more than th local Importance The Thc literature of ot oil shale is confined lar largely cly to reports dealing with the shale shalo of ot foreign countries very ery little having been published on that of ot tho United States Tho The reports that treat of ot the methods of mining and distilling oil shale In Scotland France FrancO and New South Wales ales aro arc especially Interesting and Instructive In view of oC the probable probable proba proba- ble development In the near future of I I States an oil shale Industry in tho the United I |