Acción Antrópica, cambio climático y tectónica: implicancias en la supervivencia de paleociénagas en el valle de Tulum, provincia de San Juan, Argentina

RODRÍGUEZ AIXA INÉS; MARTINEZ PATRICIA; BURGOS LUCAS; MIRANDA GLADYS

San Miguel de Tucumán

Congreso; XX Congreso Geológico Argentino. Simposio 7, Geomorfología, Cuaternario y Cambio climático; 2017

Asociación Geológica Argentina

The Tulum Valley is an active broken-foreland basin placed in the piedmont of the Oriental Precordillera and Sierras Pampeanas Occidentales, western part of Argentina. The climate is arid and dry. In the past this area had large wetlands which do not exist at the present time. Human influences, as well as, climatic and tectonic factors were studied with the aim to determine their contribution on the demise-preservation of paleo-wetlands in the Tulum Valley. The gravity anomaly map allowed to determine the structural framework of the basin, with depocenters and faults linked to geographical location of the wetlands. The human influence produced a change in the wetlands natural cycle, through drainage and channels. Although, climatic conditions in the study area are not favourable in terms of water availability for wetlands recharge, in years with anomalously humid conditions these may develop.