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Geologic map of Mauna Kea volcano, Hawaii

Geologic map of Mauna Kea volcano, Hawaii

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Author: Stephen C. Porter


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One 51" x 33" sheet. From text: Mauna Kea (4,206 m), the highest of the five volcanoes that form the island of Hawaii, is the only Hawaiian volcano known to possess a record of Pleistocene glaciation. The interstratification of glacial sediments with volcanic rocks on the upper slopes of the mountain makes it possible to subdivide the volcanic pile into mappable rock-stratigraphic units. On the basis of their gross lithologic characteristics, these units fall into two major groups. The glacial and volcanic rocks of the younger group have been further subdivided into time-stratigraphic units that are controlled by 14C and K-Ar dates. The volcanic and glacial stratigraphy and the chronology, which have been discussed in detail elsewhere (Porter, 1972a, 1972b, 1973a, 1973b, 1979a, 1979b, 1979c; Porter and others, 1977), are summarized below and in Figure 1. Lava flows of Mauna Loa volcano that are included within the map area were assigned to the prehistoric and historic members of the Kau volcanic series by Stearns and Macdonald (1946), but these rocks were not part of this study, except for mapping their distribution and relative-age relationships.

Published: 4/01/1979

Pages: 4, plus 1 sheet

Product Category: Maps and Charts