Named for occurrence at Manana Island [Koko Head 7.5' quad] 1.5 mi northwest of Makapuu Head, Island of Oahu. Included in upper part of Honolulu volcanic series. Consists of palagonitized gray to brown lithic tuff. Highest point of Manana Island is 361 ft above sea level. Base of tuff not exposed. On adjacent mainland unconformity overlies Koolau basalt. Manana tuff deposited on beach cobbles of Waimanalo stand of sea. Hence assigned latest Pleistocene or Recent age.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Forms Manana (Rabbit) Island, nearly circular island about 0.4 mi in diam, 1.5 mi northwest of Makapuu Head. No fossils. Believed to have formed after Waimanalo stand of sea. Assigned latest Pleistocene or Recent age.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
Manana Tuff (Stearns, IN Stearns and Vaksvik, 1935) abandoned as formally named unit and called Manana tuff cone, informal unit of Honolulu Volcanics.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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