Eruptions occurred at Monte Burney during the Pleistocene. Two eruptions around 49,000 ± 500 and 48,000 ± 500 years before present deposited tephra in Laguna Potrok Aike, a lake approximately east of Monte Burney; there they reach thicknesses of and respectively. Other Pleistocene eruptions are recorded there at 26,200 and 31,000 years ago, with additional eruptions having occurred during marine isotope stage 3. Holocene tephras from Monte Burney have also been found in this lake.