Yantarni reported activity

Event Name : Yantarni 410000 yBP

Start: 410000 (± 90000 Years)

Years BP K-Ar

Lava flow:

Description: From Riehle and others (1987): "Another sample of a lava flow stratigraphically high in the cone-building deposits yielded an age of 0.41k[+/-]0.09 Ma (sample 19, table 3 [in original text]). The cone retains the outline of its original form (see frontispiece [in original text]) but is incised in all quadrants by glacially eroded valleys, and we infer that cone construction was largely completed before late Pleistocene glaciation. The inference is consistent with the youngest radiometric age of the sample that is stratigraphically high in the cone-building unit (0.41 Ma; sample 19)."