magmatic processes

Question 1

occurs when crystallization along the walls of the magma chamber in which crystals preferentially form and adhere to the edges

Answer 1

marginal accretion

Question 2

includes fractionation procesess that occur when crystals develop with significantly different densities than the surrounding magma

Answer 2

gravitational separation

Question 3

a process during fractional crystallization where the first dense minerals that mineralize sink and accumulate at the bottom of the magma body

Answer 3

crystal settling

Question 4

a process during fractional crystallization where the first lighter minerals that mineralize float and accumulate at the top of the magma body

Answer 4

crystal flotation

Question 5

a process during magma cooling that occurs when the magma body is subjected to stress, squeezing off the melt from the magma body, leaving behidn the concentrated crystalline mush

Answer 5

filter pressing

Question 6

occurs whereby liquids and crystals are segregated due to factors such as velocity density or temp

Answer 6

convective flow segregation

Question 7

two or more dissimilar magmas coexist but retaining their distinctive characteristics

Answer 7

magma mingling

Question 8

thorough mixing of two or more magmas with the individual charcteristics no longer recognizable

Answer 8

magma mixing

Question 9

development of more than one type of igneous rock in situ from a common magma

Answer 9

magmatic differentiation

Question 10

the incorporation and digestion of solid or fluid foreign materials such as the wall rock

Answer 10

magmatic assimilation

Question 11

one parner magma fractionates to produce two or more distinctly different daughter magmas with different compositions

Answer 11

liquid fractionation

Question 12

involves the selective diffusions of ions in the magma due to compositional, thermal, or density gradients, and water content that may play a role in the generation of metallic ore deposits in magmatic systems

Answer 12

differential diffusion

Question 13

also called liquid liquid fractionation, is the seperation of magma into two or more distict liquid phases

Answer 13

liquid immiscibility