PT - JOURNAL ARTICLE AU - Moberly, Ralph TI - Amorphous marine muds from tropically weathered basalt AID - 10.2475/ajs.261.8.767 DP - 1963 Oct 01 TA - American Journal of Science PG - 767--772 VI - 261 IP - 8 4099 - http://www.ajsonline.org/content/261/8/767.short 4100 - http://www.ajsonline.org/content/261/8/767.full SO - Am J Sci1963 Oct 01; 261 AB - Clay-sized detrital sediments of Kaneohe Bay, Hawaii, closely reflect the intense tropical weathering conditions of their basaltic source area. Most of the silica and alumina present is amorphous allophane or in weakly crystalline halloysite. It is suggested that unstable muds of this composition may have been the raw materials for authigenesis of illite found in old sedimentary rocks.