Naolinco volcanic field
Naolinco volcanic field is a volcanic field in Veracruz, Mexico. It lies in the region of the cities of Jalapa and Naolinco, and the town of Naolinco lies in the field. Geologic context The Trans-Mexican Volcanic Belt is best known for calc-alkaline volcanoes such as Pico de Orizaba and Popocatepetl stratovolcanoes as well as calderas and pyroclastic cones; however it also features scattered alkali basalt volcanism. It lies at an angle to the Middle America Trench unlike the more typical volcanic arcs of Central America; some theories consider the belt to be independent from the trench. In its eastern region lies the Cofre de Perote and a group of volcanoes including the Naolinco Volcanic Field. Sometimes it and some neighbouring monogenetic volcanoes such as those at Cofre de Perote are included into a "Xalapa volcanic field", which would have about 50 volcanic centres. Despite their location, they are most likely unrelated to Cofre de Perote itself. The field The Naolinco Volcanic Field lies in the Sierra de Chiconquiaco. It includes the volcanic cones of Cerro Acatlan, which is the largest cone in the field, Cerro el Hoyo, two Cerro Gordo cones, Cerro Organo and Pueblo Viejo. The cone Rincon de