Quantifying interactions between uplift, climate, deformation, and exhumation remains diffi cult, in many cases due to a paucity of data relevant to all processes. We synthesize new and existing data to understand the orogen-scale orographic changes across the central Andes, Bolivia. We use a regional climate model and geo-thermochronologic data to identify the correlations between changes in p...

In unicellular organisms, intracellular inclusions of amorphous calcium carbonate (ACC) were initially described in cyanobacteria and, later, eukaryotes from Lake Geneva (Switzerland/France). Inclusions eukaryotes, named micropearls, consist hydrated ACCs, frequently enriched Sr or Ba, and displaying internal oscillatory zonations, due to variations the Ba:Ca Sr:Ca ratios. An analysis our datab...

Glaciation in the humid tropical Andes is a sensitive indicator of mean annual temperature. Here, we present sedimentological data from lakes beyond the glacial limit in the tropical Andes indicating that deglaciation from the Last Glacial Maximum led substantial warming at high northern latitudes. Deglaciation from glacial maximum positions at Lake Titicaca, Peru/Bolivia (16 degrees S), and La...

Itylos titicaca (Weyner 1890) has been reported to have a narrow distribution range associated with Andean wetlands called “bofedales” in Peru, Bolivia, northeast Chile and northwest Argentina. In its is between the upper Puna lower Alpine belts, recorded from 3800 4900 m. This study reports new elevation record of I. above 5200 m at Sora Pata Lake, Caquena highlands Chilean altiplano. Furtherm...