Field, laboratory, and library manual in physical geography . Fig. 20. Section of a Glacial Moraine in the Rocky Mountains onthe Line of the Great Northern Railroad river? As the great ice sheet moved southward it melted atthe southern border. When the melting exceeded the southwardmovement, the front of the glacier retreated northward. Whenthe melting just equaled the melting of the ice, the front of theglacier remained stationary. One of these pauses on its retreatoccurred in the region southeast of Oconomowoc, also in theregion shown on the Eagle sheet in Folio 1, and in others to thesouth
Field, laboratory, and library manual in physical geography . Fig. 20. Section of a Glacial Moraine in the Rocky Mountains onthe Line of the Great Northern Railroad river? As the great ice sheet moved southward it melted atthe southern border. When the melting exceeded the southwardmovement, the front of the glacier retreated northward. Whenthe melting just equaled the melting of the ice, the front of theglacier remained stationary. One of these pauses on its retreatoccurred in the region southeast of Oconomowoc, also in theregion shown on the Eagle sheet in Folio 1, and in others to thesouth and west. From what source do you suppose the materialcame which makes up these hills southeast of Oconomowoc?. 130 LAKES 131 What name is given to such a formation? Why are these hillsso irregular? How does this glacial formation differ from drum-lins ? Do you find any indication of a general trend in the hillsrepresented on the Eagle sheet? If so, what relation does itsustain to the direction of the trend of the nearest drumlins?What angle would you expect the end of a glacier to formwith the direction of its movements ? What evidence of youthful drainage do you find ? If thesestreams are young, how do you account for their extremecrookedness in many cases? They are called consequent Fig. 20 shows a section of a glacial moraine. Describe thegeneral shape of the slopes of this hill. Do you find any evi-dences of stratification ? Is stratification characteristic of glacialdeposits ? Account for this. Observe the bowlders in the fore-ground at the left. Describe their size and shape. Are theyrounded or angular ? Account for this. What, besides bowlders,do you find in this glacial de
Size: 1126px × 2218px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidfieldlaborat, bookyear1906
