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Regarding today's edits, no modern source would call the glacial origin of erratics speculative. Webster's dictionary, The Glossary of Geology, Encyclopedia of Science & Technology, Encyclopedia International, World Book Encyclopedia, and all modern geological texts (e.g., Earth, by Press & Sevier; The Earth, by Tarbuck & Lutgens; and many many more - those are all I had at hand to check) all support the phraseology as "fact." Cheers Geologyguy 03:32, 8 January 2007 (UTC)