241 



The material is liedded in layers that lie at a high angle, such as is 

 seen in delta structure: the dip is in a general direction do\yn stream. 

 Ample oiJiKiitnnities for oliservation occur in gravel pits and stream sec- 

 tions. 



The streets in West LaFayettt^ are improved hy (ipening pits in the 

 street lines and afterward tilling them vsitli the top-soil and graveling over 

 them. These excavations uinformly show steeply inclined beds. The rail- 

 road cuts through the terraces on both sides of the river show this struc- 

 ture. 1'lie valley of the Wea through the gravel deposits shows tlie same 

 thing. In llic Wca \allcy a layer of conglomerate is a conspicuous 



Cutis' r.Fii.l. a kt'ttle hiile two inile^ iiurthwcst of I iiclr|irn.liTici'. Ind. 



feature, dijipiiig tcv.a.rd the ci'et'l>; on tlu' north side and from it on the 

 south side. 



Tlic conglonu'rate stratum is formed of the sand and gravel of the 

 dep'osit cemented with ( arl.onate of lime. It lies appiarently at a lu.nform 

 ])oi-izon and is of uniform rhiclcm'ss. The cement is so abundant in sonu^ 

 places as tc till ( (ini]iletciy The inteisrices in the mass of sand and gravel. 

 Indeed, a bhu k left in a yard fionting on State Street in West LaFayette 

 has its upjier flat surface completely covered witlt a layer of ])ure car- 

 bonate of lime a lialf imh thick. 



An interesting feature of these deposits is The occurrence of lieds of 

 bowlder clay interstratitied wirh tlie sand and gravel. This is noTieeable 



