66 THE VERMILION IRON-BEARING DISTRICT. 



perhaps the best extinct volcanic region in the world in which to study 

 igneous intrusion. It is to be regretted that Owen did not closely follow 

 Norwood's notes in compiling his general map, as the map would then 

 show far more accurately than it does the distribution of the rocks of the 

 Vermillion district as disclosed by Norword's reconnaissance survey. 



Sections 1 and 2 on PL 2 N of Owen's report have no legend other 

 than that giving a general location, and consequently one can not be abso- 

 lutely sure of the rock represented. It is clear, however, that Norwood had 

 the idea that the metamorphic rocks in both the Vermillion and the Saganaga 

 area are cut bj^ tlie granite of the Mesabi range and Saganaga Lake and 

 folded in between the granite ridges. 



1861. 



Anderson, C. L., and Clark, Thomas. Report on geolog-y: Document No. 12, 

 Minnesota legislature. St. Paul, 1861; 26 pages. 



There was reprinted in 1 860, by order of the Minnesota senate, portions 

 of the publications of the geological surveys of Wisconsin for 1864 and 1858, 

 which, owing to the juxtaposition of the States, it was thought would equally 

 apply to Minnesota. Mr. Thomas Clark, of Lake City, was chairman of the 

 committee having in charge the publication of this first geological report of 

 the State of Minnesota. The same year that this report was published a 

 commission was appointed, consisting of C. L. Anderson and Thomas Clark, 

 above referred to, to report on the geology of the State and on a plan for a 

 geological survey of the State. This report was sent to the legislature by 

 the governor, who, however, declared himself not ready to advise the com- 

 mencement of a geological survey. 



In the report the commissioners call attention to some of the general 

 geologic featui'es of the State. The only points of interest in connection 

 with the jDresent study of the literature of the region is the recognition 

 of the existence of granite and metamorphic rocks, forming northeast- 

 southwest trending ranges in the northeastern part of the State, and the 

 insistence on the investigation of this area, with the view to determining the 

 existence of metalliferous deposits in the rocks in this region. 



1865. 

 Hanchett, a. H., and Clark, T. Report of the State geologist, Aug. H. 

 Hanchett, M. D., together with the phj-sical geography, meteorology, and bota,Tiy 

 of the northeastern district of Minnesota, by Thomas Clark, assistant geologist. 

 St. Paul, 1865; 82 pages. 



