Discover and read the best of Twitter Threads about #SFUglacialgeology
Most recents (4)
1/ Wednesday in the Chehalis Valley with Carie-Ann Lau, ex grad student, now session instructor EASC 411 Terrain Analysis. This weekend students will be field checking their terrain and terrain stability map. Interesting terrain types and stratigraphy. (thread) #SFUGlacialGeology 
2/ Oldest sediment in the valley are these oxidized fluvial gravels. Ages in the lowest gravel are 29 ka. Alternating gravel and lacustrine represent blockage by glaciers at the mouth of Chehalis. Wood present at ~19,000 years old.
3/ Detail of tree at contact between gravel and glaciolacustrine dated to ~19,150 years old.
1/ Spent an enjoyable Friday (March 15) with the amazing Dr. Corinne Griffin on the EASC 403 Quaternary Geology Sea to Sky Fieldtrip. It covers glacial geology and, naturally, Natural Hazards. #SFUNaturalHazards #SFUGlacialGeology
2/ Charles Creek Debris flow retention structure. Poor land use decisions (not recognizing debris flow hazard on fan deltas) resulted in deadly consequences followed by construction of several types of debris flow protection structures. They work.
3/ Porteau Cove. Area of shallow water because of a submarine moraine, makes this a good site for a ferry dock and diving. Day lighting joints along road can lead to rock fall issues, such as happened in July 2008. Caused a bit of a kerfuffle in terms of the Olympics.
Had a great mid-conference fieldtrip on Deglaciation of the Outaouais region Thursday. Robert-André Daigneault, UQUAM gives us the regional picture 1/4 #SFUGlacialGeology #CANQUA
Melina explains the 3 different ice flows on this beautifully striated outcrop. 2/4 #SFUGlacialGeology #CANQUA
Marc-Andre is showing us a mound of beautifully exposed subaqueous outwash in a field of Champlain Sea sediments. 3/4 #SFUGlacialGeology #CANQUA
Back from fieldwork so time to tweet about the boulder hunting. This is the central portion of the Ruby Range, SW Yukon. Follow thread for more info. #SFUglacialgeology #YukonGeologicalSurvey
We are dating deglaciation, both the Cordilleran Ice Sheet (CIS) and local alpine glaciers. These small cirques would have supported glaciers during the last glaciation (MIS 2). #SFUglacialgeology #YukonGeologicalSurvey
We use the accumulation of Terrestrial Cosmogenic Nuclides from glacially transported boulders to date deglaciation. Good boulder selection is crucial. These large boulders are from the CIS, most of these are saw worthy! #SFUglacialgeology #YukonGeologicalSurvey
