This beautiful, isolated rock stands in the Alkyonides Gulf, the northwestern part of the Gulf of Corinth. It has some beautiful notches, which indicate recent uplift. It is situated right on the footwall of an active fault, which was activated during the 1981 earthquake sequence. It is not so easy to use those notches as sea level indicators or for measuring tectonic movements if both effects have to be taken into account. The fault has a huge throw and a beautiful scarp (limestone) with lots of slickensides. One of my favourite places in Greece. Well, the entire Perachora peninsula is worth a visit – an earthquake geologist’s Disney Land!
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I took this picture in an iron-nickel mine in Albania. Here we see the contact between the underlying ultramafics and the carbonates on top. The fluids circulated in the mafics and the iron-nickel ores are trapped at the lithological boundary. The ore is shiny green and occurs in hundreds of small bands in a small area along the contact only. I love this picture because the contact is so sharp. A fault zone nearby bears very beautiful conglomerates which I always wanted to have for my bathroom…
This week’s Friday links are almost entirely earthquake related.
The 3rd INQUA-IGCP567 international workshop on paleoseismology and archeoseismology will take place in Mexico in November 2012. It’s the 100th anniversary of the Acambay Earthquake.
June 21, 2011 | in Teaching
In April 2011 we started on a field trip to investigate the Padul-Nigüelas Fault Zone in Spain (+/- 37°N, 3°36°W, see map here). Like the Wednesday Centerfault (5), the PNFZ is in the Granada Basin but some 40 km ENE. Delimiting Tortonian to Quaternary basin fillings to the Sierra Nevada, the PNFZ forms hardrock scarps. more