{"id":366,"date":"2010-06-29T08:51:15","date_gmt":"2010-06-29T13:51:15","guid":{"rendered":"http:\/\/hydrogeo.wordpress.com\/2010\/06\/29\/another-braided-river-meets-a-gorge-lamar-river-yellowstone-np\/"},"modified":"2010-06-29T08:51:15","modified_gmt":"2010-06-29T13:51:15","slug":"another-braided-river-meets-a-gorge-lamar-river-yellowstone-np","status":"publish","type":"post","link":"https:\/\/all-geo.org\/jefferson\/another-braided-river-meets-a-gorge-lamar-river-yellowstone-np\/","title":{"rendered":"Another braided river meets a gorge: Lamar River, Yellowstone NP"},"content":{"rendered":"<p>Like the Snake River <a href=\"http:\/\/geopathology.posterous.com\/braided-river-meets-mountain-gorge-the-snake\">I posted last week<\/a>, today I&#8217;ve got another example of a river happily braiding through a wide valley (this time probably glacial, not structural) only to meet an obstacle in the form of topography. I&#8217;m looking at the Lamar River on the northeast entrance road to Yellowstone National Park. We&#8217;re north of the volcanic plateau here and just west of the Absaroka Range, so I think the geology is typical Cordilleran stuff.<\/p>\n<p>One of the things that fascinates me about this example is how short (and steep) the gorge section is (&lt; 3 km, ~100 m elevation drop). Is it a relict of the glacial influence on valley formation?  Or is there something structural going on (the <a href=\"http:\/\/geopathology.posterous.com\/braided-river-meets-mountain-gorge-the-snake\">Yellowstone geologic map<\/a> indicates a fault in about the right area)? Food for thought and an excuse to do some field reconnaissance someday maybe. Or you can <a href=\"http:\/\/www.flashearth.com\/?lat=44.918409&amp;lon=-110.294483&amp;z=14.4&amp;r=0&amp;src=msa\">go there now<\/a> in Flash Earth.<\/p>\n<p>Images below are a mixture of Google Earth, Flash Earth, and ground photos from my personal collection.<\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_522-scaled1000.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_522-scaled1000.jpg\" alt=\"Lamar Valley above the gorge section (photo by Anne Jefferson)\" title=\"Lamar Valley above the gorge section (photo by Anne Jefferson)\" width=\"500\" height=\"375\" class=\"aligncenter size-full wp-image-374\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_520-scaled1000.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_520-scaled1000.jpg\" alt=\"Lamar River upstream of the gorge (photo by Anne Jefferson)\" title=\"Lamar River upstream of the gorge (photo by Anne Jefferson)\" width=\"500\" height=\"375\" class=\"aligncenter size-full wp-image-370\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_515-scaled1000.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/2010june_515-scaled1000.jpg\" alt=\"Lamar River gorge (photo by Anne Jefferson)\" title=\"Lamar River gorge (photo by Anne Jefferson)\" width=\"500\" height=\"666\" class=\"aligncenter size-full wp-image-371\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar.jpg\" alt=\"Lamar River showing gorge section (Flash Earth)\" title=\"Lamar River showing gorge section (Flash Earth)\" width=\"500\" height=\"185\" class=\"aligncenter size-full wp-image-380\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar-broad-scaled1000.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar-broad-scaled1000.jpg\" alt=\"Lamar River upstream of the gorge (Google Earth image)\" title=\"Lamar River upstream of the gorge (Google Earth image)\" width=\"500\" height=\"424\" class=\"aligncenter size-full wp-image-369\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar-gorge.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hydrogeo.files.wordpress.com\/2010\/06\/lamar-gorge.jpg\" alt=\"Lamar River gorge from Google Earth\" title=\"Lamar River gorge from Google Earth\" width=\"500\" height=\"359\" class=\"aligncenter size-full wp-image-379\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Like the Snake River I posted last week, today I&#8217;ve got another example of a river happily braiding through a wide valley (this time probably glacial, not structural) only to meet an obstacle in the form of topography. I&#8217;m looking at the Lamar River on the northeast entrance road to &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-366","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"featured_image_src":null,"author_info":{"display_name":"ajefferson","author_link":"https:\/\/all-geo.org\/jefferson\/author\/ajefferson\/"},"_links":{"self":[{"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/posts\/366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/comments?post=366"}],"version-history":[{"count":0,"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/posts\/366\/revisions"}],"wp:attachment":[{"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/media?parent=366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/categories?post=366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/all-geo.org\/jefferson\/wp-json\/wp\/v2\/tags?post=366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}