Roof Pendant Geology

They are exposed by erosion of the overlying rock.

Roof pendant geology.

The photos from the last posting were from the sierra nevada batholith called a batholith because it consists of many many smaller intrusive bodies that collectively define a much larger intrusive complex that doesn t even have a well defined root. The intrusions that most commonly contain roof pendants are relatively shallow stocks or batholiths. Posts about roof pendant written by marli miller. Roof pendant downward extension of the surrounding rock that protrudes into the upper surface of an igneous intrusive body.

In figure 2 below an overview of the general geology of the best studied roof pendants of the sierra nevada is given. The roof pendants occur as isolated pieces of the surrounding rock. The presence of roof pendants indicates that the igneous body is being observed near its upper surface. In roof pendant metamorphosed through the processes of contact metamorphism during which heat and fluids from the intrusion have reconstituted the enclosed 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 in lay terminology sometimes rock hat is used. The amounts of precious metals found to exist along the roof pendants led to many scientific studies being done in this area and thus much is known about the formation of these features. Geology of the gull lake pendant modified from stevens and greene 1999.