What is an isograd? What will be an ideal response?
An isograd is a line connecting areas of equal metamorphic intensity
You might also like to view...
The very first step in the scientific process is to find out what is known about the problem
Indicate whether the statement is true or false
Why is pegmatite an economically important igneous rock?
A) Pegmatite's crystals are huge, so they are very valuable. B) Pegmatite is very rare, so it is valuable. C) Pegmatite's crystallization process causes the enrichment of rare ore minerals. D) Pegmatite is perfect for the production of certain weaponry.
Which is one of four processes that produces different varieties of igneous rocks?
A) Single source rocks melt to form different types of magma. B) Magma in a volcano changes mineral composition as soon as it is ejected. C) Magma stays the same after assimilating nearby rocks. D) Magma can change its composition by assimilating nearby rocks.
Which of the following causes the formation of large crystals such as pegmatite?
A) high fluid content of magma B) high heavy metal content of magma C) high silica content of magma D) high solidification factor of magma