1 99:59:59,999 --> 99:59:59,999 Okay, so this is the difference between uh, glacial till, 2 99:59:59,999 --> 99:59:59,999 which is unstratified, 3 99:59:59,999 --> 99:59:59,999 and non-glacial till. 4 99:59:59,999 --> 99:59:59,999 So, hopefully you can see that this uh, gravel here 5 99:59:59,999 --> 99:59:59,999 is well-stratified. 6 99:59:59,999 --> 99:59:59,999 There are a lot of sedimentary features here. 7 99:59:59,999 --> 99:59:59,999 Um, you can see graded bedding. 8 99:59:59,999 --> 99:59:59,999 You can also see cross bedding. 9 99:59:59,999 --> 99:59:59,999 Maybe I can just sort of zoom in on that. 10 99:59:59,999 --> 99:59:59,999 So there's cross bedding right there. 11 99:59:59,999 --> 99:59:59,999 Very coarse uh, cross bedding. 12 99:59:59,999 --> 99:59:59,999 However, the stratification or the horizontal layering, 13 99:59:59,999 --> 99:59:59,999 the general horizontal here, 14 99:59:59,999 --> 99:59:59,999 indicates that this is not glacial gravel. 15 99:59:59,999 --> 99:59:59,999 Even though it's approximately the correct size 16 99:59:59,999 --> 99:59:59,999 and sorting distribution. 17 99:59:59,999 --> 99:59:59,999 The presence of sedimentary features 18 99:59:59,999 --> 99:59:59,999 as well as uh, the stratification, 19 99:59:59,999 --> 99:59:59,999 that's the horizontal layering, 20 99:59:59,999 --> 99:59:59,999 indicated as not glacial gravel. 21 99:59:59,999 --> 99:59:59,999 Okay. I'll try and show you glacial gravel a little later. 22 99:59:59,999 --> 99:59:59,999 So this is uh, glacial till. 23 99:59:59,999 --> 99:59:59,999 It is gravel that is deposited by a glacier. 24 99:59:59,999 --> 99:59:59,999 Um, and the identifying characteristics of it 25 99:59:59,999 --> 99:59:59,999 is well-rounded clasts, 26 99:59:59,999 --> 99:59:59,999 however they're not really really well-rounded. 27 99:59:59,999 --> 99:59:59,999 They are definitely rounded to some extent. 28 99:59:59,999 --> 99:59:59,999 Um, oftentimes there are striations on each individual clast, 29 99:59:59,999 --> 99:59:59,999 maybe I can show you that later.