Impressive normal fault in western Guatemala! #patadays post-congress field trip

#EaerhquakeReport for #OTD 1976 M 7.5 #Sismo #Terremoto #Earthquake en #Guatemala

23,000 fatalities
Left-lateral strike-slip earthquake along Motagua fault
Plate boundary between North America and Caribbean plates

Commemoratung at 13th #PATAdays #PATA #PATA2026

Title page of a review paper on the 1976 Earthquake

Today is the 50th anniversary of the Mw7.5 Guatemala Earthquake. The first sessions commemorate this disastrous event and shed light on the tectonics of the plate boundary and anti-seismic design in the UNESCO World Heritage site of Antigua.
#PATADays

Geologists in a convent

Today we start with an Archaeoseismology walking tour through Antigua. Lots of earthquakes have affected the city since the 18th century, and we can see the traces as well as the antiseismic design. #PATADays

#patadays Day 3. Another spectacular evidence of Motagua fault, in a complex structural bending at La Laguna. Trastensive cinematic, well expressed in a paleoseismological trench.

#patadays Day 2. The rupture of 1976 eq. on the Motagua fault, and his offset along a canal

#patadays in Guatemala. Day 1 of the pre-congress field trip. Paleoseismological trench of 1976 left lateral strike slip of Motagua fault.

Quite a special time building relationships with international paleoseismologist colleagues

Lifetime memories
World class science
Three happy birthday songs for Rob
Could not have been better

See you all en Guatemala for #PATA26 #PataDays less than 2 years from now

Fantastic presentation from the famous geologist Barrientos.

Plus the head emergency managers (CERT is part of their process to prepare)

And a heartfelt presentation and ceremony from indigenous Mapuche woman

#PATA2024 #PataDays

Active Faults with nice knickpoints in #Loutraki see the #PataDays field guide of 2011 (Greece)