258 S: Powers — Notes on Hawaiian Petrology. 



vated coral reef partly covered by flows that have come 

 from about 10 small cones and 3 small pit-craters. 

 Kawaihoa Crater on the extreme southern end of the 









*tam* 738 /y 









C fcjuko/e 





ii 



j. ■^\Jfa/oa '&&<, 



NIIHAU 



W fh/,J<o<. 



/ leAucr 



S. M. KERNS 1904 





) 



t& Cone 



SCALE 



° I 2 3 



4 *fi/<*s 



1 / 



nu/ Scry J 



f %//a»oiJrook 





SCftrtyo 



ftjuobte ^mrfiftzCix 



/.anc//r>g 



Rjv Koa/aukon/ 



t &ar>tj/~>ut 



Po//a/, 





\« 



eoo />. 



Fig. l.« Map of Niihau, Hawaiian Islands, consisting of a fragment of 

 the original island surrounded by an elevated coral reef on which there are 

 young cones and craters. 



island and the islands Lehua and Kaula are composed of 

 tuff of unknown composition. The flows comprising the 

 original island, as seen from the west side, range in 



