504 



S. POWERS TECTONIC LINES IN THE HAAYAIIAN ISLANDS 



More recent views on the relationship of Kilaiiea and Mauna Loa have 

 been advanced by Hitchcock^ H. B. (}uj)j)j, Daly, and Jaggar. Hitchcock^ 

 decided that these volcanoes were distinct above sealevel, but perhaps con- 

 nected at a greater depth. Gnppy® concluded from a study of spring- 

 waters that Mauna Loa and Kilauea are separate centers of influence. 



Figure 2. — AInp of Hawaii 



Showing Kahuku, Kau, Puna, and two unnamed rift lines ; Napcopoo, Kaiohinu, Molio- 

 liea, Keauhou, Waipio-Waimanu, and Waipio-Pololu fault-lines. The 1916 flow started 

 from above Puu o Keokeo instead of below this group of cones, as here shown. 



A satellitic origin of Kilauea on the flanks of Mauna Loa as a laccolith 

 which has given rise to the elevation at Kilauea and to tlie probable de- 

 crease in activity of that volcano has been elaborated by Prof. E, A. 

 Daly.^^ This theory is supported by the fact that Kilauea is separated 

 from Mauna Loa by a low depression. 



8 Hawaii and its volcanoes, Honolulu, 1911, p. 261. 



9 Cited by Hitchcock, loc. cit., pp. 131-132. 



10 The nature of volcanic action. Proc. Am. Acad. An 

 109-116. 



and Sci., vol. 47, 1911, pp. 



