Some xenoliths of calc-alkaline material are found in Aguas Calientes lavas, and magma mixing has generated lavas containing andesite inclusions in dacites. One eruption of Aguas Calientes postdates the first centre of Lascar and was originally linked to the Lascar Piedras Grandes eruption, before sampling on the deposits of this eruption indicated a relationship with the Lascar volcano itself. Effusion of lava ceased after the cone was built.
Some xenoliths of calc-alkaline material are discovered in Aguas Calientes lavas, and magma mixing has produced lavas containing andesite inclusions within dacites. One eruption of Aguas Calientes occurred after the initial centre of Lascar and was previously associated with the Lascar Piedras Grandes eruption until sampling on its deposits revealed a connection to the Lascar volcano itself. The flow of lava ceased once the cone was formed.