Mora clock on two bells mounted above the clock mechanism or alternatively on a spiral wire gong. The weights were made of cast iron. Mora clock Gustavian Mora clocks are a type of longcase clock which were made in, and derived their name from, the town of Mora in Dalarna province, Sweden. Production began in the late 18th century and continued through most of the 19th finally succumbing to the increased competition from newer styles and cheaper mass production methods. Mora clock faces are often marked with the inscription "A A S Mora"—the initials of Krång Anders Andersson (1727-1799) of Östnor, traditionally
Siljan Ring an annular outcrop of Lower Paleozoic sedimentary rocks within Proterozoic granites of the Dala series. In Dalarna, the basement rocks consist of granites dated as 1.6 billion years old, putting them at the boundary between the Paleoproterozoic and the Mesoproterozoic. They were emplaced shortly after the Svecokarelian orogeny. The oldest sedimentary rocks that outcrop in the Siljan area are of Ordovician age. The sequence is dominated by limestone formations with one prominent black shale, the Fjäcka Shale, which is bituminous and has generated petroleum, sourcing the oil found in limestone cavities in the same area. The Ordovician sequence is overlain