Roof Pendant Geology Definition

Cretaceous granite intruding cambrian metasedimentary rock sierra nevada range.

Roof pendant geology definition.

In lay terminology sometimes rock hat is used. Roof pendants can be. In geology the term xenolith is. The presence of roof pendants indicates that the igneous body is being observed near its upper surface.

The roof pendants are the remains of the paleozoic and early mesozoic rocks that once covered the magma chambers of the sierra nevada batholith. What is the definition of roof pendant. The roof pendants occur as isolated pieces of the surrounding rock within the intrusive mass. They are exposed by erosion of the overlying rock.

Roof pendant downward extension of the surrounding rock that protrudes into the upper surface of an igneous intrusive body. These older rocks that are intruded by the granite are called roof pendants because they show the roof of the batholith. A broad definition could include rock fragments which have become encased in sedimentary rock. The current geological model for the santana project area has identified that gold mineralization is related to a series of hydrothermal breccias approximately 300 500m in diameter or greater hosted by the copula of batholithic intrusions porphyritic stocks and by roof pendants of their volcanic host rocks.

The large scale inclusion of foreign rock strata at the margins of an igneous intrusion is called a roof pendant examples. What are synonyms for roof pendant. What is the meaning of roof pendant. How do you use roof pendant in a sentence.

Xenoliths in granodiorite. In roof pendant metamorphosed through the processes of contact metamorphism during which heat and fluids from the intrusion have reconstituted the enclosed rock. The intrusions that most commonly contain roof pendants are relatively shallow stocks or batholiths. Rocks in the major roof pendants of the eastern sierra nevada have been mapped in various degrees of detail to bet ter understand their stratigraphy internal structure and geologic history and.