224 



A section tiikcii (in a delta at the mill sonTli of Dolan .nave the fol- 

 lowinji': 



Feet. 



1. Bedded, jointed yellow clay lianded with red. burns red... 20 



2. Bedded. laminated, jointed ))lne clay, hard when dry, soft 



Avhen wet 5 



?>. Very soft, massive, blue day. burninj;- white 20 



POST GLACIAL DEPOSITS. 



cruder this head will be considered the alluvium and the alluvial fan 

 deposits. 



Alluvit.m. 



At the close of glacial times Bean Blossom Creek and its tribu- 

 taries recut their channels to an unknown depth. Then a process of 

 meandering and slight aggrading set in. which has continued to the pres- 

 ent time. As a result the creek and its tributaries have developed large 

 alluvial plains. The alluvial plain of Bean Blossom Avill average a mile 

 in Avidth throughout ^Monroe County, while many of its branches have 

 bottoms a quarter to a half mile wide in their lower courses. The depth 

 of the alluvial deposits was not ascertained, but in loAver Bean Blossom 

 Valley they are probably quite thick. The best farms of tlie region are 

 located on these plains. 



Alluvial Fans. 



A number of small V-shaped valleys with vei-y steep channels were 

 found traA'ersing the steepest, southern slopes of Bean Blossom Valley. 

 These on reaching the valley-floor spread out their debris in the form 

 of alluvial fans, their channels disappearing altogether where the fan 

 intercepts the valley floor. The fans ]troject but a few yards beyond the 

 mouths of the valleys. These are evidently fans as they do not possess 

 the flat tops and steep outer margins of the deltas. That they are post- 

 glacial is evident from the fact that some of the little valleys have cut 

 their channels through glacial debris. The one just east of Andrew 

 Stine's house will serve as an example. In addition to this the fans are 

 built on the alluvial floor of the creek which has l)een made since glacial 

 times. 



