The drainage area of Lake Latnjajaure is marked in red. The extent of snowcover depicts the situation in August. These nappes are easily observed from the station looking across the lake as sheets of bedrock. Intrusions of acidic granites can be found in the northern part of Latnjavagge giving this area a slightly different topography. Latnjavagge is also a good place to look for minerals and garnets in all sizes are common with large crystals of hornblende, feldspars and quartz.
Faults dissect the area and can be related to shearing of the bedrock.
A few of these faults may also explain the abrupt change in direction of Latnjavagge. This basin became a major accumulation area where sedimenary bedrock started to form. The material was primarily derived from weathering of the continental parts of Fennoscandia and the North American continent. The volcanic and tectonic activity increased during this period which may suggest that the proto-Atlantic was again decreasing in width. This means that the Baltic and the North American-Greenland shields were moving towards each other.