Speaker ex­plores roots of Al­berta Land­scape

The Drumheller Mail - - CLASSIFIEDS - Sub­mit­ted The Drumheller Mail sub­mit­ted

The Royal Tyrrell Mu­seum Speaker Se­ries ex­plore the Al­berta land­scape this Fri­day, March 24.

Dr. Rob Young from the Univer­sity of British Columbia will present “The Shape of the Land: Pleis­tocene Ice Age Pro­cesses That Caused Al­berta to Look the Way it Does.”

In many parts of the world, glacia­tion was a repet­i­tive process where ice ad­vanced dur­ing glacial phases and re­treated dur­ing sig­nif­i­cant in­ter­glacial phases, of which there have been about 20 dur­ing the last two mil­lion years.

There­fore, glacial ge­ol­o­gists ex­pected that Al­berta would be an over­lay of glacially mod­i­fied land­scapes, with each glacia­tion re­work­ing the fea­tures and de­posits of the pre­vi­ous. How­ever, re­search by a num­ber of ge­ol­o­gists over the last cou­ple of decades has con­tra­dicted ex­pec­ta­tions and a new vi­sion has un­folded.

Dr. Young’s talk will ex­plore how land­scape fea­tures pre­dicted by the bull­doz­ing or ice de­cay mod­els are proven in­cor­rect merely by the ab­sence, or rel­a­tive po­si­tion of, pre­dicted fea­tures. New ideas on glacial land­scapes rely on find­ings from lab­o­ra­tory ex­per­i­ments, use of first prin­ci­ples in sed­i­men­tol­ogy, and ana­logues found south of the ice sheets’ lim­its (such as an area of cat­a­strophic ice age mega flood­ing to the south with an ar­ray of sim­i­lar land­forms).

The net re­sult of these stud­ies is the idea that high-pres­sure wa­ter, un­der the ice, was the dom­i­nant re­gional land-form­ing mech­a­nism.

The Royal Tyrrell Mu­seum’s Speaker Se­ries talks are free and open to the pub­lic. They are held ev­ery Thurs­day un­til April 27 at 11:00 a.m. in the Mu­seum auditorium. Past Speaker Se­ries talks are also avail­able on the Mu­seum’s YouTube chan­nel: youtube.com/user/Roy­alTyrrel­lMu­seum

Dr. Rob Young from the Univer­sity of British Columbia will present “The Shape of the Land: Pleis­tocene Ice Age Pro­cesses That Caused Al­berta to Look the Way it Does” this Fri­day March 24 at Speaker Se­ries.

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