Characterization of a volcanic ash fall, Wright Valley (abstract)
It may be difficult to establish an absolute chronology for the sediment cores obtained by the DVDP due to the lack of datable material. The presence of a volcanic ash fall, however, has been noted in the western part of Wright Valley and this ash fall might reasonably serve as a suitable time horizon for the region.
Jones, L.M.; Stormer, J.C. Jr.; Behling, R.E.Characterization of a volcanic ash fall, Wright Valley (abstract)Dry Valleys Drilling Project Bulletinno.4:28-29,1974