Geology of Riamo

The geology of Riamo encompasses the study and categorization of the superficial soil and underground rock masses in the area encompassed by the Riamese mainland, Overseas territories, and other territories under control by the givernnent of Riamo, as well as those lands directly influenced by said geology.

Due to its large territory, Riamese geology is characterized by high variety of rocks and minerals from the Ediacaran to the Quaternary. World-class mineral deposits are also found in the region.

Neogene Basins

"Middle Stone" in the upper Leight river, where three sandstone stratigrahic units can be spotted

Vast amounts of Riamese territory are covered on early Neogene to Quaternary horizontal sediments, caused by deposition of particles as part of fluvial erosion. The most prominent ones include the Leight Basin, the Upper and Lower Nam Basins, the Black River basin (also called Rio Negro in Gavilia) and minor basins that link to these.

Sedimentary alluvial fans are common in the rims of most of these basins, being prominent around the Golden, Leight, and Nam rivers, while also being present along the scarped southern maritime Nostrian coast, mostly as the steep mountain rivers meet the Sea. It is in some of these that prominent port cities of Riamo are located; notably, Savona, Reddington and Rummington.

Sediments in most River basins are concordant between each other, most showing their relative age clearly in common discomformities. The most common one is the Walz discomformity: a 2-30 cm thick layer of dark tuff from the late Paleozoic which is believed to be related with the theoretical explosion of Mount Gale in eastern Riamo, believed to have occured somewhere in the Ordovician period.

Most basins feature layers dating back to the late Mesozoic, most showing the same strata from the Geological column of Riamo. The most common layers include devonian old red sandstone, quarzite-poor metamorphic rocks, green sandstone, consolidated quartz sand and clay.

Plateau

Tucky and Giganton; the two largest Mesa formations west of the Leight river

Gallese Plateau

A sinclinal valley near Sasz city, through which the river Fahle flows

The Gallese Plateau, often called Gallese Highlands, is characterised for being a large continental platform with an altitude consistently over the 200 meters over sea level, which features elongated river plains, karstic formations, plutonic formations, and mezosoic vulcanism.