Stream gauging at the ColosseumThe scientist up to his waist in Oregon’s Owyhee River is strea

Stream gauging at the ColosseumThe scientist up to his waist in Oregon’s Owyhee River is stream gauging. By measuring the depth of the river at a given point, the volume of water flowing through the river can be determined if you know some basic properties like the shape and width of the channel. The US Geological Survey posted this picture to, in part, slightly brag about the kind of settings geologists get to work in.The rocks behind him are a fairly famous sedimentary sequence near the community of Rome, Oregon. The rocks are a mixture of lake deposits, sandstones, shales, and volcanic deposits that rained down either into the lakes or at times when the lakes had dried up. They are late Miocene to Pliocene in age, from about 15 million years old to as young as a few million.The Owyhee River has cut through these sedimentary rocks, leaving steep walls along its path. A long stretch of this country has been nicknamed the “Pillars of Rome” as the sedimentary rocks have been eroded in such a way as to remind observers of classical Roman construction.-JBBImage credit: John Wirt, USGShttps://flic.kr/p/v6dxm5Read morehttp://oregon2.sierraclub.org/chapter/high-desert-poihttp://bit.ly/1LKnyRJhttp://www.oregonriver.com/owyheerivergeology.htmhttp://pubs.usgs.gov/bul/1332b/report.pdf -- source link

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