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Show area of about 4,f00 square miles, thu exceeding In extent of territory any known oil field In the world. "The formation consists of alter- i xiatlnc layers of sandstone of great I porosity, fossillferous limestone, clay ; shales and arenaceous shales and Is i free from faults, fractures and fissures with two exceptions. "Eight distinct oil sands aro found along the San Juan rlvor. These oil , gands aggregate over 300 feet la ' thickness; the porous character of tho Oil-bearing sandrock capped by ltmn-stone ltmn-stone and shale, forms tho most Ideal storage rocks known for so volatile a substance as petroleum. "The color of the oil by reflected j light is dark green. It contains a high percentage of the volatile oils and Ij i tho best refining oil found In the- western part of the continent. -It should be worth from $2.50 to $3 per : barrel at the well. j "It Is a puro oarafflne oil. The per- i centage of parafllne as shown by tho . analysis, scolo and vaseline Is 12 l-'J j per cent of the crude weight of the oil - "In from two to three years this ' will undoubtedly prove to bo the rao-t productive as well as the largest oil Held in the world." SAYS SAN JUAN IS PR0VEN01L FIELD The new San Juan oil fields, in southeattern Utah, are attracting much attention, from Invi-stors, says the Fresno, Cal., Republican. Although Al-though tho field is young it Is more than promising; it is already proved. It Is expected that In a short time a pipe line 130 miles long will be constructed to the Santa Fe railway to market tho oil. The following Is from one geological report by H. E. Peterson, mining engineer: "The San Juan oil field covers a territory ter-ritory approximately fifty miles wide by ninety miles In length with a total |