the origin of lead ore is contact metamorphic origin
Metamorphic rocks can be identified if the rock is foliated or nonfoliated, foliating type, type of metamorphism (contact/regional), and by probable original rock. :)
Contact metamorphic rocks form when existing rocks are subjected to high temperatures and pressures due to the intrusion of magma or lava. The heat from the molten rock changes the mineral composition and texture of the surrounding rocks, resulting in the formation of new minerals and a variety of metamorphic rocks. This process usually occurs in the shallow crust near the Earth's surface.
A metamorphic rock formed from Basalt is Schist. a.k.a. Green Schist
Metamorphic rocks at hot spots will form mostly by contact and hydrothermal metamorphism as a result of exposure to heat from magma and interaction with hot water respectively.
The two groups of metamorphic rock are foliated and nonfoliated. Metamorphic rocks can also be classified as contact and regional.
Hornfels is a common rock that can form in a contact metamorphic zone. It is typically fine-grained and formed by the heat and pressure from nearby igneous intrusions.
A zone of contact metamorphism is called an aureole.
regional and contact
contact
the origin of lead ore is contact metamorphic origin
Metamorphic rocks can be identified if the rock is foliated or nonfoliated, foliating type, type of metamorphism (contact/regional), and by probable original rock. :)
Contact metamorphic rocks form when existing rocks are subjected to high temperatures and pressures due to the intrusion of magma or lava. The heat from the molten rock changes the mineral composition and texture of the surrounding rocks, resulting in the formation of new minerals and a variety of metamorphic rocks. This process usually occurs in the shallow crust near the Earth's surface.
Metamorphic rock usually forms when a rock is altered under heat and pressure without melting. Some rocks may be metamorphosed by contact with hot water,
It would represent a contact metamorphic rock, as the change that has occurred in the raw ingredients has been caused by exposure and proximity to a source of heat.
A non-foliated contact metamorphic rock is called a hornfels. Hornfels is called so because of its exceptional toughness and texture both reminiscent of animal horns.
If limestone is subjected to metamorphism, it will likely form marble. Marble is a metamorphic rock that forms from the recrystallization of limestone under high temperature and pressure conditions.