At Palena Lake east from Melimoyu the MEL1 layer is still thick. A thick tephra deposit at Lago Shaman and Mallín El Embudo in the Río Cisnes valley has been attributed to the MEL2 eruption. Other findings of tephra are MEL2 layers at Laguna Junco and Laguna Las Mellizas. Overall, both eruptions appear to have had a volcanic explosivity index of 5 and produced about and tephra for the MEL1 and MEL2 eruption, respectively. The compositions of the two tephras are different, with the MEL2 magma having formed possibly from leftover MEL1 magma. The MEL1 tephra is of basaltic trachyandesite to basaltic andesite composition and the MEL2 tephra is of trachydacite composition.