The guardians of the Columbia, Mount Hood, Mount Adams and Mount St Helens . THE RIVER 27. and San Joaquin in California andthe Willamette in Oregon, withthe partly filled basin of PugetSound in Washington. Center-ing along the Cascade barrier, anera of terrific violence shakesthe very foundation of the North-west. Elevations and contoursare changed. New lake beds arecreated. Watersheds and streamcourses are remodeled. Drycoulees are left where formerly Multnomah Falls in Summer and fascinating cascade, the most famousin the Northwest, falls 720 feet into a basin,and then 130 feet
The guardians of the Columbia, Mount Hood, Mount Adams and Mount St Helens . THE RIVER 27. and San Joaquin in California andthe Willamette in Oregon, withthe partly filled basin of PugetSound in Washington. Center-ing along the Cascade barrier, anera of terrific violence shakesthe very foundation of the North-west. Elevations and contoursare changed. New lake beds arecreated. Watersheds and streamcourses are remodeled. Drycoulees are left where formerly Multnomah Falls in Summer and fascinating cascade, the most famousin the Northwest, falls 720 feet into a basin,and then 130 feet to the bank of theColumbia below. rivers flowed. Strata are up-tilted and riven, to be cross-sec-tioned again by the new riversas they cut new canyons in drain-ing the new lakes. Most im-portant of all, outflows of meltedrock, pouring from fissures in thechanging earth-folds, spread vast HOTOS COPYRIGHT, KISER 28 THE GUARDIANS OF THE COLUMBIA sheets of basalt, trap and andesite over most of the interior. Innumerablecraters build cones of lava and scoriae along the Cascade uptilt, and s
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Keywords: ., bookcentury1900, bookdecade1910, bookidguardiansofc, bookyear1912
