BackgroundThe Ciomadul lava-dome complex is the youngest volcanic center of the Carpathian-Pannonian region. Located at the SE end of the Calimani-Harghita Range, it consists of a dacitic dome complex formed about 500-700 ka.
The dome complex is cut by twin craters, Mohos and St. Anna. The latest eruption, from St. Anna, produced subplinian airfall and pyroclastic-surge deposits that have been variously dated between about 10.7 and 42 ka. Pecskay et al. (2006) noted ages of 1.0-0.03 Ma. A number of samples from other South Harghita locations (Porcuhu, Cucu, Kapus, Pilisca, Balvanyos, Haramul Mare, and Koves Peak) had Quaternary dates.
Pecskay Z, Lexa J, Szakacs A, Seghedi I, Balogh K, Konecny V, Zelenka T, Kovacs M, Poka T, Fulop, Marton E, Panaiotu C, Cvetkovic V, 2006. Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area. Geologica Carpathica 57:6, p. 511-530.
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