Comments on: "Glacial lake evolution and Atlantic-Pacific drainage reversals during deglaciation of the Patagonia ice sheet" by Thorndycraft et al. [Quat. Sci. Rev. 203 (2019), 102-127]

Jacques Bourgois (1) , Maria Eugenia Cisternas , Jose Frutos

1 iSTeP - Institut des Sciences de la Terre de Paris

Underlying the scientific method developed by Thorndycraft et al. (2019, T19 hereafter) for the morphological analysis is the idea that producing a large enough landform dataset treated statistically would facilitate quantification of regional isostatic rebound together with the reconstruction of the Lago Chalenko paleolake history. Also, they associate the landform dataset to a Bayesian modeling of ages. This Comment adresses 5 key points questionning the proposed assumptions.

Keywords: South America; North Patagonia Icefield; Last glacial maximum; General Carrera lake (Chile); Buenos Aires lake (Argentina); Atlantic-Pacific drainage reversal; Facinal cold events; 8.2 ka cold event

Domains: Sciences of the Universe [physics]

Jacques Bourgois, Maria Eugenia Cisternas, Jose Frutos. Comments on: "Glacial lake evolution and Atlantic-Pacific drainage reversals during deglaciation of the Patagonia ice sheet" by Thorndycraft et al. [Quat. Sci. Rev. 203 (2019), 102-127]. Quaternary Science Reviews, 2019, 213, pp.167-170. ⟨10.1016/j.quascirev.2019.03.036⟩. ⟨insu-03595784⟩