Geologic history of Mauna Loa's southeast flank revealed in new map

The recently published "Geologic map of the central-southeast flank of Mauna Loa" (https://pubs.er.usgs.gov/publication/sim2932B), shown here, uses color to depict ages of geologic units, with warm colors denoting younger units and cool colors indicating older units. It is the second in a series of maps that will cover Mauna Loa. The first, a geologic map of the northeast flank of the volcano, is posted at https://pubs.er.usgs.gov/publication/sim2932A. USGS map.