Webinar_05: Naara López Velázquez1, José Alfredo Járquin Rojas1,Marie-Noëlle Guilbaud2, María del Pilar Ortega-Larrocea3,Silke Cram4

1: Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico

2: Departamento de Vulcanología, Instituto de Geofísica, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico

3: Departamento de Ciencias Ambientales y del Suelo, Instituto de Geología, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico

4: Instituto de Geografía, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico

Urban geosites for resilience: Case studies in Mexico City

Geological and geomorphological elements in cities are usually fragmented, damaged and invisible to their inhabitants, despite the wide range of benefits they provide to them. In particular, they allow them to know their geological setting and be aware of associated risks. The gigantic capital city of Mexico is settled in a paleolake basin embedded in a diverse volcanic landscape that includes ancient and active volcanoes. City inhabitants, in particular the poorest and more vulnerable, face numerous hazards (floods, landslides, debris flows, subsidence, earthquakes, drought, fires), which derive into high risks that have both natural and antropogenic causes due to the uncontrolled city growth and socio-economic issues.

The geoheritage of the city is mostly formed by monogenetic (one-event) volcanoes that include the Xitle cone, the Sierra Santa Catarina cone chain, the Cerro La Estrella dome and the Sierra Chichinautzin range. All these landforms are an important resource for geoconservation and geoeducation. We present two case studies that were investigated by students near their homes, which was a strategy employed for virtual classes during the COVID-19 pandemic to allow them to undertake field work. They were instructed to observe the landscape around their place of living, looking for geological features of interest and reflecting about their benefits and hazards, as well as their link with biological and pedological elements, hence using geoheritage as a strategy for geoconservation, ecological rehabilitation and risk reduction.

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