Table 1.

Summary table showing main bottom type, dominant mineralogy, and interpretation of microbial influence in precipitation across the Puquios.

	Main bottom type	Mineralogy	Microbial influence
Puquio 1	Floccules with gypsum in mats around the margins	Gypsum (fine-grained/granular)	Microbial
Transition Zone	Various microbial mats	Gypsum (granular to laminated)	Microbial
Puquio 2	Spar	Gypsum (selenite crystals)	Physicochemical with microbial influence around the margins
Puquio 3	Pinnacles	Gypsum	Microbial and physicochemical
Puquio 4	Spar	Gypsum (selenite crystals)	Physicochemical