The presence of roof pendants indicates that the igneous body is being observed near its upper surface.
Roof pendant geology.
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.
The photo below shows the cretaceous granite below light colored rock and the dark colored sedimentary now metamorphic rock above.
Cretaceous granite intruding cambrian metasedimentary rock sierra nevada range.
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.
They are exposed by erosion of the overlying rock.
In lay terminology sometimes rock hat is used.
The dinkey creek roof pendant includes schist quartzite hornfelds calc silicate rocks and marble.