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(A) The Cuatro Ciénegas Basin within México and geographic location of the Archaean Domes in Pozas Azules Ranch. (B) Details of an Archaean Domes slice. (C) Domes when the sampling was conducted (note the size scale). (D) Sampling design along border toward center 1.5-m transect (sample 1 (S1) to sample 10 (S10)). Photo credit: David Jaramillo.
