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Show PROF. WM. PETERSON'S j I .TALK ON LOGAN CANYON 1 INTENSELY INTERESTING I -Tho geological talk given by Prof. Wm. Peterson to tho local Rotarlans on Thursday was Intensely Interesting. Interest-ing. Prof. Peterson said Logan canyon can-yon was unusual because It was attached at-tached to an unusual valley. From a geological standpoint ana other reasons, Logan eanyon was ono ot the most Interesting In the country. Us said that Logan canyon was a great gorge In a wall ot rock on each side. It had eonte about by erosion and was approximately thirty million years of age. More than thirty two cubio miles of material havo been washed out of tho canyon by tho rlv-or rlv-or nnd placed on tho floor of tho alloy. Ono cubic mllo ot matcrlat iquals the billion wagon loads. Of courso It has taken millions of years for tho river to do this great work. TIiIh amount of material would placo a thickness ot 800 feet on tho floor ot tho valley. This has helped to mnko tho rich soil in tho valley. Professor Peterson described tho various strata of rock from tho beginning be-ginning of tho can on to tho end and In which geological period they wore J formed. Tho sprlngn from which Ilo-gan Ilo-gan rqclves Its water Biipply aro In n laigo plunging rock. Tho trough Is on a hard Burfaco floor of tho canon can-on nnd tho water from many sources flow Into this trough a For well filtered fil-tered water, temperature and purity wo have perhaps tho bcsj'.wnter In tho Intermountaln country." It is doubtful If any spring wator will test higher In purity. Wo havo Borne phosphate deposits on this sido ot tho range but tho largo phosphate deposits In tho world and coral reefs aro on tho Bear Lako Bide.. Some of theso deposits are bo-ing bo-ing worked at tho present time at a good profit. On tho Bear Lake Bldo we have tho largest over-thrust or fold In mountain construction that exists In tho world. This fold or over thrust extends about twelvo miles. Bear Lako Is a structural trough and has perhaps a maximum M depth of 1100 feet. In Florida the) l JpJI boast of a spring with thirty second l j feet flow. On tho east sido ot th ii H rango wo havo a spring with a flow f. i jf of 200 second feet. vi' iH Professor Peterson explalued that j the large cava at Cottonwood' and y ij other smaller ones In the canyon t jH wero caused by chemical - reaetlen. "' ' J jH The water has dissolved the Mmo- aton. The large spring known as ', H Ricks Spring comes through a fls- . sure In the rock. This fissure was ! caused by the water dissolving the H limestone. f 'fJPJ "From a typical Alplno glaciated ,H area, there Is no bettor placo thau J JH that exhibited at tho Whlto Pino lako i , JH and Tony Grovo lake," said Professor j H Peterson. 1 "Theso lakes wero caus- I H ed by glaciers. At the tlmo when t ! JH Lako llonnovlllo was here, our ell- itllll mato was much colder and wo had tiil much moro precipitation, even more it VJH than wo aro having this spring, and "' H somo largo glaclcrs woro formed on fH tho slopes of Mt. Mngog and Gog, nnd j ! they moved down and dug out tho ;. j IH present basin whoro tho lakes now j IJH arc. Tho glaclor mada a terminal ' l moraine which now oxlsts on thp cast j lf bank ot tho Logan river In tho Bea- t JH ver soctlon ot tho canyon. , "j '' ' . H In making comparisons Prof, Pet- )H crson said ho had vlsltodithe Bryce H Canyon and the Zlon canyon Jn son-"- - -1 ? M em Utah. These canyons aro remark- , fH ablo for their high colorings and the ,M deep gorges cut by the rivers 'but I" H for tho geologist Logan canyon was i far moro Interesting because of Its , r JM variety and tho many things of in- ' H tcrcst. In Logan canyon thcr,o Is a ' ' U study and It has much educational i ' - fJJ value. Many geologists have been ! 'WM attracted to It. -WM Professor Peterson recommence I tmm that special things ot Intorest In the jH canyon be marked and made men- ! JMm lion of In our advertising matter. J WM Wo havo a scenic wonder and we do j L not know It. iWm |
