Big Rock: diferenças entre revisões

'''Big Rock''' (também conhecido por '''Okotoks Erratic''') é um [[errático glacial]] situado entre as torres de [[Okotoks]] e [[Black Diamond]], [[Alberta]], [[Canadá]]. As 15.000 [[tonelada]]s de [[quartzito]] tornam o BIg Rock como o maior glacial errático conhecido no mundo.<ref>{{cite web |url=http://www.cd.gov.ab.ca/enjoying_alberta/museums_historic_sites/site_listings/okotoks_erratic/ |title=Alberta museum historic site: Okotoks Erratic |publisher=Alberta Government: Tourism, Parks, Recreation and Culture}}</ref><ref name="canqua99">{{cite paper |year=1999 |title=CANQUA 99 Guidebook: Late Quaternary Geology of the Foothills, from Calgary to the Alberta–Montana Border |author=Lionel E. Jackson, Jr., Elizabeth R. Leboe, Edward C. Little, Philip J. Holme, Stephen R. Hicock, and Kazuharu Shimamura |url=http://www3.telus.net/lejgeology/etrain/PDF/CANQUA%2099%20SW%20AB%20Field%20Guide.pdf }}</ref><ref>{{cite journal |title=Cosmogenic ³⁶Cl dating of the maximum limit of the Laurentide Ice Sheet in southwestern Alberta |first=Lionel E. |last=Jackson |coauthors=Fred M. Phillips, and Edward C. Little |year=1999 |journal=Canadian Journal of Earth Sciences |volume=36 |issue=8 |pages=1347–1356 |url=http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_abst_e?cjes_e99-038_36_ns_nf_cjes8-99 |doi=10.1139/cjes-36-8-1347 }}</ref>