Neogene Tiporco Volcanic Complex, San Luis, Argentina: An explosive event in a regional transpressive - local transtensive setting in the pampean flat slab

- The TVC document the Pampean flat-slab-related volcanic activity in the broken foreland.
- The TVC is an calc-alkaline magmatic complex related to Neogene Arc-magmatism.
- According to geomorphological, lithofacial and structural evidence, the TVC is interpreted as an aborted caldera.
- Initial doming, explosive eruptions and effusive stage was controlled by Nw-WNW and NW-NNW structures and NNE-oriented foliations.

The Neogene Tiporco Volcanic Complex (TVC) is located in the Sierras Pampeanas of San Luis, Argentina, at the southeast of the Pampean flat-slab segment. Based on the comprehensive study of lithofacies and structures, the reconstruction of the volcanic architecture has been carried out. The TVC has been modeled in three subsequent stages: 1) initial updoming, 2) ignimbritic eruptive activity and 3) lava dome emplacement. Interplay of magma injection and transtensional tectonic deformation has been invoked to reproduce TVC evolution.

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