0
The foliation is caused by the massive force of pressure and high temperature which results from mountain building processes caused by plate collisions. The heat and pressure combine to realign the existing minerals from a random orientation to one of parallel orientation, thus creating the visible lines or platy cleavages found in foliated metamorphic rocks. The lines of foliation are created perpendicularly to the force being applied.
What else can I help you with?
Is metamorphic rock porous or non porous and with explanation?
Metamorphic rock is generally considered non-porous because the intense heat and pressure involved in its formation typically cause the minerals to recrystallize and compact, filling any pre-existing pore spaces. However, the porosity can vary depending on the specific type of metamorphic rock and its mineral composition; for example, some schists may have slight porosity due to their foliation. Overall, most metamorphic rocks exhibit low permeability and minimal porosity compared to sedimentary rocks.
What rock can be broken into fragments that may later form sedimentary rocks?
Any rock (igneous, sedimentary or metamorphic) may be broken into fragments that may later be formed into sedimentary rock.
Is a sedimentary rock or a metamorphic rock harder to sculpt?
Metamorphic rocks are formed from sedimentary and igneous rocks. When sedimentary or igneous rock is subjected to heat and pressure, the rock gets compressed. Therefore, if you had the same amount of metamorphic rock and sedimentary or igneous rock, the metamorphic rock would be heavier, because there is more 'stuff' in the metamorphic rock. ---------------------------------------------- However please note: There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash). There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble). Thus "hardness" is not a characteristic that can be used to distinguish between the two.
What rock makes up the greatest part of metamorphic rock's?
may be ignoious rock by violent valconic eruption due to high pressure and low tempresure
Can pebbles change into igneous metamorphic and sedimentary rocks?
No. It's too late.Unless it gets eroded itself and eventually forms layers of sediment which may then get turned into rock.
Is a migmatite foliated or non foliated metamorphic rock?
Difficult to give you a precise answer, migmatites are composed of a leucosome which is new material crystallized from incipient melting and a mesosome which is old material that resisted melting. These two materials may form a fine fabric which imparts a foliation to the rock. The leucosome may also be incoherently folded. Also if the migmatite is forming from a foliated source, the foliation may persist. Thus migmatites are metamorphic rocks that show characteristics of incipient melting and they may or may not show a foliation too, the foliation is not a critical characteristic of a rock being a migmatite.
What happens to igneous rock in intense heat and pressure?
In intense heat and pressure, igneous rock can undergo metamorphism, transforming into metamorphic rock. This process involves recrystallization of minerals, and the rock may develop foliation or banding patterns. The original texture and mineral composition of the rock can change as a result of this process.
Is tuff foliated?
Tuff is not always foliated. Foliation refers to the alignment of minerals in a rock due to pressure during metamorphism, whereas tuff is a type of rock made of volcanic ash that has been cemented together. Tuff typically does not exhibit foliation unless it has been subjected to intense pressure and heat during metamorphism.
How can you determine if a rock is metamorphic?
To determine if a rock is metamorphic, look for signs of heat and pressure altering its original form. This can include changes in texture, mineral composition, and the presence of distinct banding or foliation. Additionally, metamorphic rocks often have a crystalline structure and may contain minerals like mica or garnet. Conducting a mineralogical analysis and examining the rock's physical characteristics can help confirm its metamorphic nature.
What are some of the engineering problems associated with metamorphic rocks?
Engineering problems associated with metamorphic rocks include their variable composition and hardness, which can make them difficult to predict and work with. Metamorphic rocks can also have foliation and bedding planes, which may impact stability in construction projects. Additionally, their response to stress and pressure can lead to deformation or fracturing, affecting the durability of structures built with them.
How do you determine if a rock is igneous sedimentary or metamorphic?
Speaking in very general terms, and with plenty of exceptions, igneous rock may possess larger visible crystals (granite), may be glassy (obsidian), may have air pockets or bubbles present (pumice), and may be dark green or black-ish (basalt). Sedimentary rock may display sediment layers (like shale), may contain fossils (fossiliferous limestone), and may be fine grained (chemical limestone). Metamorphic rock may display foliation (parallel layers of light and dark minerals)(like gneiss), may have a wavy appearance to the foliation, have platy cleavage, or sparkle from the mineral mica (mica schist).
What happens to rock when they are subjected to pressure?
When rocks are subjected to pressure over time, they may undergo a process called metamorphism, where they can change in mineral composition, texture, or structure. This can lead to the formation of new minerals and the development of foliation or banding in the rock. Ultimately, the rock may transform into a new type of metamorphic rock.
Metamorphic rocks that don't have layers?
Metamorphic rocks without visible layering are typically formed under conditions of high temperature and pressure that cause the minerals within the rock to recrystallize. This may result in a homogeneous texture without distinct layers or bands. These rocks may still exhibit foliation or other textures that indicate their metamorphic origin, even if they lack visible layering.
If a rock becomes a metamorphic rock no other changes in the rock cycle will occur true or false?
False. The rock may undergo further metamorphism, or it may melt and re-solidify into igneous rock, or it may be broken down into sediment at the surface and later become sedimentary rock.
If a rock becomes a metamorphic rock no other changes in the rock cycle will occur.?
False A+
9. If exposed to high enough temperatures and pressures long-buried igneous rock could?
If exposed to high enough temperatures and pressures, long-buried igneous rock could undergo metamorphism, transforming into a metamorphic rock. This process involves the recrystallization of minerals and the alteration of the rock's texture and composition without melting. The resulting metamorphic rock may exhibit new characteristics, such as increased density and the formation of foliation or banding, depending on the conditions of pressure and temperature.
Which properties of a rock may change as the rock become metamorphic?
crust deeper rock
