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The Huarenchenque Fm is a Pleistocene clastic sedimentary unit that crops out in the SW of the Neuquén Basin, Argentina. This unit is made up of cross stratified basalt-dominated sandstones and conglomerates with pumice clasts in a fluvial context. The roundness of these pumice clasts, the numerous fragments of shards and their association with polymodal basalt-rich clasts in cross-bedded conglomerates...
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