0
Which non foliated rock forms only in a zone of contact metamorphism?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why doesn't metamorphism occur when rocks come in contact with magma?
Metamorphism does occur when rocks come in contact with magma but it is very localised. It is contact metamorphism and a close look with a hand lens will normally show a change to the rock, sometimes only millimetres wide.
What type of rock can only form deeply underground?
Only an intrusive igneous rock forms underground, but you can argue that all metamorphism occurs underground. The issue here is that when the metamorphism is thermal, often the ground it is under has only just been formed (i.e. a lava flow). To avoid confusion, only regional metamorphism can take place underground. The rocks formed by regional metamorphism and intrusive magma cooling are rocks with crystalline texture.
Is schist foliated or non- foliated?
Chert is non-foliated. Foliation is a term that is used mainly to describe the appearance or texture of metamorphic rock. Chert is a sedimentary rock, composed mostly of microcrystalline quartz.
Is calcite a soft mineral?
Calcite is a non silicate mineral because it does not contain silicon.
Sedimentary rocks formed when they undergo?
Sedimentary rocks form when they undergo metamorphism. Only if they decide NOT to be Sedimentary rocks anymore.
Which nonfoliated rock forms only in contact metamorphism?
gypsum
What type of metamorphism contact or regional would result in a schist explain your choice?
Regional. Contact metamorphism is high temperature-low pressure so no mineral alignment occurs, only new mineral growth.
which rock is only formed by regional metamorphasim?
The heat generated by the magma chamber has changed these sedimentary rocks into the metamorphic rocks marble, quartzite, and hornfels. Regional Metamorphism occurs over a much larger area. This metamorphism produces rocks such as gneiss and schist.
Why doesn't metamorphism occur when rocks come in contact with magma?
Metamorphism does occur when rocks come in contact with magma but it is very localised. It is contact metamorphism and a close look with a hand lens will normally show a change to the rock, sometimes only millimetres wide.
What type of rock can only form deeply underground?
Only an intrusive igneous rock forms underground, but you can argue that all metamorphism occurs underground. The issue here is that when the metamorphism is thermal, often the ground it is under has only just been formed (i.e. a lava flow). To avoid confusion, only regional metamorphism can take place underground. The rocks formed by regional metamorphism and intrusive magma cooling are rocks with crystalline texture.
Metamorphic rocks composed of only one mineral that forms equidimensional crystals have what texture?
They have a non-foliated texture, without banding, non-gneissic; characteristic of marble and quartzite.
Is schist foliated or non- foliated?
Chert is non-foliated. Foliation is a term that is used mainly to describe the appearance or texture of metamorphic rock. Chert is a sedimentary rock, composed mostly of microcrystalline quartz.
What type of metamorphism would result in a schist?
Most schists are derived from phyllite, a lower grade metamorphic rock.
Why does metamorphic rock rarely forms at earth's surface?
All metamorphism (in Geological terms) requires heat, whether it is Thermal or Regional:Thermal is heat only. It happens at the surface mainly. This happens upon contact with an igneous intrusion, and in a burnt margin in an extrusion/unconformity like a lava flow.Regional is both heat and pressure. It happens deep beneath the surface only.
Does metamorphism usually involve melting?
Rock metamorphism does not involve melting and cooling from melt. A rock that has melted can only become an igneous rock.
What physical change in metamorphic rock signals the end of metamorphism?
from what i know there is no physical change that signals the end of metamorphism but there is a physical change during the process of metamorphism. during metamorphism the shape of the rock changes due to force of stress this is a physical change. (a physical change is when the shape or composition ofa substance e.g. rock has changed). by the way i am only 12
What are the 2 categories of metamorphic rock?
Foliated and non-foliated. Foliated rocks have an alignment of all their minerals. Some have band, some just look like all their minerals are lying flat against each other. For example schist or gneiss.Non-foliated rocks look more crystalline, like sugar cubes salt pressed together , with no pattern to their mineral arrangement like marble and quartzite.Hope I helped I'm only in the sixth grade.
