Mega-ripples of Camas Prairie Basin - Filling or Draining? Cosmography101-17.1 w/ Randall Carlson HD

Cosmography101 Class 17 part 1 with Randall Carlson (2008) Introduction to the features of one of the basins of the temporary Ice Age Lake Missoula in western Montana, USA, and alternative interpretations. Overview notes/topics: Scale Invariance in Geology “bed-loads”; Paleo-current indicators Small-scale current ripples on Peachtree Creek at Medlock Park after Hurricane Ivan (’04) Camas Prairie ripple field, Lower Flathead Basin, Montana Delta fans Relict features: Mississippi River delta Merging of three ‘flow-throughs’ Identifying features on topographic map of Camas Prairie: breach and drainage points Google Earth views and orientation Photos from overflight Sept. ’07: Markle, Duck Pond, Wills Creek Passes; Ripple field and delta Effects of “mega-scale water erosion” High-water level and drainage thru Rainbow Lake Pass Formation of the ripples Contrary interpretation to current ideas re: draining/filling of basin Depth of water-flow Composition of bed-forms Wreckage from global event Looking at salient features from catastrophic flood helps to recognize more subtle features How deep was the ice in Canada? Possibly 3 miles deep over Hudson Bay Rainbow “Dog” Lake and Pass; super turbulent flows; high-water marks Strandlines/shorelines around National Bison Range and Bitterroot Valley Record of all that ice over Canada melting away Clark Fork River Valley scoured and etched J.T. Pardee calculated flow estimates: 9.5 cubic miles per hour! Introducing the uneducated to Catastrophe