Accruva Formation

It is characterized by its abundant clusters of small shield dome structures located throughout the unit and lack of pervasive tectonic deformation.

The formation region tends to occur as equidimensional patches several tens to hundreds of kilometers across.

[2] These shields typically found in close proximity with each other and will form groups of structures.

Along with the volcanic shields, slight deformation is present evidenced by wrinkle ridges and a few fractures and grabens.

This system defines and maps rock units based on the description of the observable characteristics at the surface due to lacking other information.

The planet Venus, where the Accruva Formation is located. Most of the Accruva Formation is located on the Northern half of the hemisphere. Image from Wikimedia
Over time formation of shield dome, one of many that constitutes the Accruva Formation. Image created by GeoGifs4Gesus
How multiple shield domes can be formed within the shield plain formation over time. Image created by Chesschamp82.