Roof Pendant Rock

In structural geology a roof pendant which also known as a pendant is a mass of country rock that projects downward into and is entirely surrounded by an igneous intrusion such as a batholith or other pluton.

Roof pendant rock.

In lay terminology sometimes rock hat is used. Cretaceous granite intruding cambrian metasedimentary rock sierra nevada range. The intrusions that most commonly contain roof pendants are relatively shallow stocks or batholiths. In roof pendant metamorphosed through the processes of contact metamorphism during which heat and fluids from the intrusion have reconstituted the enclosed rock.

The roof pendants occur as isolated pieces of the surrounding rock within the intrusive mass. These rocks are thought to have been originally deposited sometime between the paleozoic visit link and the cretaceous period visit link of the mesozoic visit link in a shallow marine area. These rocks developed along the passive western continental margin of north america during the middle devonian. The presence of roof pendants indicates that the igneous body is being observed near its upper surface.

The dinkey creek roof pendant includes schist quartzite hornfelds calc silicate rocks and marble. Roof pendants can be. These older rocks that are intruded by the granite are called roof pendants because they show the roof of the batholith.