STATE GEOLOGIST. t5 



village. Following up the creel for two and a half miles the 

 land is found to rise rapidly, and the banks of the creek me in 

 lome places Bixtv to eighty feet high. The eleration here 

 up into the gronp next above. 



\- the light house, one mil* 1 east of Will >w Greek, the fol- 

 lowing Beciion is seen: 



9 Shale, with Interlaminations of sandstone 12 ft. 



tdstone, blnish, fine, 2 ft. 



7. Arenaceous shale, 2 ft. 



n. Sandstone, bluish, hard, concretionary, 2 ft 



5. Shale, very persistent, 3 in. 



4. Sandstone, calcareons, hard, highly fossiliferons; con- 

 tains l!rf:;a. Jfertsfo, Qvmphooeras ft ') Ctymenia, Jlhyn- 

 tmpUoi a S resembling 8. mucronahis and S. 

 nedialis, but distinct from both, and a large Lepta> 

 aoid Bhell, 3j inches across the hinge line 2 ft. 



3. Shale 9 ft. 



2. t3ai hard, pyritilcrous, very persistent, . 1 ■?, in 



1. Shale, 12 ft. 



The hard, projecting, pyritons layer, (2) affords an excellent 



<»pp -n unity for measuring the dip of the formation, which was 

 found to be one and a half degrees toward the south-west. 



A abort distance west of the light house occurs the most 

 extensive dislocation seen south of .Mackinac. In the i 



borhood of the disturbance, on each side, the strata exhibit 

 undulations, which finally become an actual break, and 



iirrtw of live or six feet, indications of a sliding move- 

 matt are seen in the vicinity, and the whole effect is such as 

 night be produced by a lateral pressure from'the west. 

 The griti I Lake Huron are destined to play an im- 



t part in the economical g ;' the Lower Peninsula. 



The principal quarry owned by Johnson, Pier and Wallace 



." Worked over ;n 



litth- more than four by twelve r Is. Two hundred tons ol 

 grim! taken out during 1869, and I waeinfi 



1 to manufacture five hundred 

 finished, ' 



..e which weighed three tons, i . 



