{{Short description|Glacier in British Columbia, Canada}} {{Infobox glacier | name = Tennaya Glacier | image = File:Edziza042909-- 085-11.jpg | caption = Tennaya Glacier covered in snow | type = [[Mountain glacier]] | location = [[Mount Edziza]], [[British Columbia]], Canada | map = Canada British Columbia | label_position = right | mapframe = yes | mapframe-zoom = 9 | mapframe-wikidata = yes | coordinates = {{coord|57|41|59|N|130|37|06|W|region:CA-BC|format=dms|display=inline,title}} | coordinates_ref = <ref name="Tennaya">{{cite bcgnis|id=15031|name=Tennaya Glacier|access-date=2024-03-18}}</ref> | status = Retreating }} '''Tennaya Glacier''' is one of several glaciers draining the eastern side of the [[Mount Edziza]] [[ice cap]] in northwestern [[British Columbia]], Canada.<ref name="Souther">{{cite map|last1=Souther|first1=J. G.|author-link1=Jack Souther|title=Geology, Mount Edziza Volcanic Complex, British Columbia|map=1623A|scale=1:50,000|type=[[Geological map]]|cartography=M. Sigouin, [[Geological Survey of Canada]]|publisher=[[Energy, Mines and Resources Canada]]|year=1988|language=en|doi=10.4095/133498|doi-access=free}}</ref> It is located southeast of the summit of Mount Edziza and northwest of [[Ice Peak]] at the head of [[Tennaya Creek]].<ref name="Tennaya"/><ref name="Souther"/> Meltwater from Tennaya Glacier feeds Tennaya Creek which eventually flows into [[Nuttlude Lake]], an expansion of [[Kakiddi Creek]].<ref>{{cite cgndb|id=JBAWB|title=Tennaya Glacier|access-date=2024-03-18}}</ref>
The name of the glacier was suggested by the [[Geological Survey of Canada]] on November 15, 1979, and eventually became official on November 24, 1980. ''Tennaya'' is derived from the [[Tahltan]] words ''ten'' and ''naya'', which mean ''ice'' and ''be come down'' respectively. The name of this glacier is a reference to a spectacular [[icefall]] at the head of Tennaya valley.<ref name="Tennaya"/>
==Geology== At the head of Tennaya Glacier are rocks assigned to the upper assemblage of the [[Ice Peak Formation]]. They consist of [[trachyte]], [[benmoreite]], [[mugearite]], [[tristanite]], [[trachybasalt]] and [[alkali basalt]] that are in the form of lava flows, [[lava dome]]s and [[pyroclastic rock|pyroclastic]] [[breccia]]. Also at the head of Tennaya Glacier is trachyte and [[comenditic]] trachyte of the [[Edziza Formation]] which are in the form of pyroclastic breccia and [[lahar]] and [[ash flow]] deposits, as well as lava flows and endogenous [[lava dome]]s.<ref name="Souther"/>
Just below the [[trim line]] of Tennaya Glacier is a rounded hill completely covered with surficial deposits that may be the source of an alkali basalt flow of the [[Big Raven Formation]].<ref name="Souther"/><ref name="Souther2">{{Cite report|last1=Souther|first1=J. G.|author-link1=Jack Souther|title=The Late Cenozoic Mount Edziza Volcanic Complex, British Columbia|work=[[Geological Survey of Canada]]|publisher=Canada Communication Group|series=Memoir 420|year=1992|page=228|isbn=0-660-14407-7|doi=10.4095/133497|doi-access=free}}</ref> This lava flow travelled down Tennaya valley to near [[Kakiddi Lake]] via a narrow, wedge-shaped notch that formed as a result of erosion along the northern edge of an older and thicker [[Kakiddi Formation]] trachyte flow.<ref name="Souther2"/>
==See also== *[[List of glaciers in Canada]] *[[Idiji Glacier]] *[[Tencho Glacier]] *[[Tenchen Glacier]]
==References== {{reflist|30em}}
{{Mount Edziza volcanic complex}}
[[Category:Glaciers of Mount Edziza]] [[Category:Tahltan place names]]