Porphyritic textures in igneous rocks result from two phases of crystallization

Indicate whether the statement is true or false


TRUE

Environmental & Atmospheric Sciences

You might also like to view...

In the Demographic Transition Model which of the following statements is TRUE?

A) Stages 1 and 4 both have low death rates B) Stage 1 has a low birth rate but a high death rate C) Stage 4 has a low RNI D) Stage 3 has a lower birth rate than death rate E) Stage 2 has a low RNI

Environmental & Atmospheric Sciences

Exogenic processes, which originate at Earth's surface, tend to increase relief

a. True b. False Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

How are Detrital sedimentary rocks primarily classified?

a. Aphanitic or Phaneritic b. Igneous Texture c. Color d. Grain or Particle Size

Environmental & Atmospheric Sciences

Which of the following materials has the highest transport costs as a percentage of product prices?

A) lumber and wood B) leather products C) rubber and plastics D) food E) stone, clay and glass

Environmental & Atmospheric Sciences