Origin of permafrost lake deposits in the Central Andes

• Published in: Permafrost and Periglacial Processes
• Main Author: Gorbunov, A. P.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1993
• Subjects: Ice; permafrost; Permafrost and Periglacial Processes; Thermokarst
• Online Access: http://dx.doi.org/10.1002/ppp.3430040406; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430040406; https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430040406

Abstract Perennially frozen lacustrine deposits in the Bolivian Altiplano are discussed. They are situated between 21°38′S and 23°13′S at an elevation of 4117–4730 m ASL. It is hypothesized that these ice‐rich lacustrine deposits formed as the result of subaquatic freezing of sediments in the Late Pleistocene to Early Holocene. The permafrost bodies are represented today by flat‐topped ridges and mounds which are the remnants of the original lake plains destroyed by thermokarst processes.