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Trachyandesites, trachytes and phonolites represent the most evolved rock types within the České Středohoří Volcanic Complex (CSVC) in the Ohře/Eger Rift. The K–Ar ages of the suite range from ~33.8 to ~25.8Ma. Major and trace element variation in the basanite – trachybasalt – trachyandesite series can be explained by several stages of modification of parental magmas by assimilation-fractional crystallization...
High-Ti melanephelinite (3.8–5.9wt% TiO 2 ), medium-Ti (phono)tephrite (2.7–3.1wt% TiO 2 ), and low-Ti olivine melanephelinite/basanite (1.9–2.3wt.% TiO 2 ) are subordinate rock types in the central European Cenozoic Volcanic Province. A contrasting melanephelinite to (phono)tephrite series occurs in the Loučná–Oberwiesenthal Volcanic Centre (37–28Ma) and also as satellite...
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