The geology of the Manu`a Islands, Samoa
Stice GD and McCoy FW. 1968. The geology of the Manu`a Islands, Samoa. Pacific Science. 22:427-457
The Manu`a Island are a group of three islands Ta`u, Ofu, and Olosega that were built by volcanic activity along the crest of the easternmost portion of the Samoan Ridge. Ta`u represents the largest volcanic center, where aa and pahoehoe flows of non-porphyritic basalt, olivine basalt, picrite basalt, and feldspar-phyric basalts constructed a volcanic shield more than 3,000 feet above sea level. The present-day total thickness of this volcanic material is over 12,000 feet, as measured from the ocean floor to the summit of Ta`u, Lata Mountain (3,045 feet).
- Type
- Journal Article
- Authors
- Stice, Gary; McCoy, Floyd
- Units
- NPSA , PACN
- Keywords
- American Samoa, Geology, Manu`a Islands, Ofu, Olosega, Physical Sciences, Ta`u