Chapter 20

Question 1

Which national park has plate convergence and extension, significant erosion, and dangerous and explosive volcanic activity?

Answer 1

Big Bend National Park

Question 2

What province is Big Bend located in?

Answer 2

southern basin and range province

Question 3

How did the bend in the Rio grande form?

Answer 3

extension

Question 4

What has led to environmental problems in the big bend region?

Answer 4

mercury mines

Question 5

Is big bend a top tier fossil park?

Answer 5

Yes it has over 1200 fossil species and world’s most giant flying creature was found in big bend (QUETZALCOATLUS)

Question 6

What park is the most complex?

Answer 6

big bend

Question 7

Why was mercury mined in the big bend region? what was it used for?

Answer 7

Mercury has been used by mankind since prehistoric times. used in industry and medicine. instruments, pesticides, medical and dental preparations

Question 8

the three great canyons of big bend

Answer 8

boquillas, mariscal, santa elena

Question 9

Chisos mountains

Answer 9

in center of big bend, igneous rocks

Question 10

U.S. Wild & Scenic River System

Answer 10

n/a

Question 11

what kind of stream is the rio grande?

Answer 11

transverse

Question 12

superimposed (antecedent stream)

Answer 12

one with a path of flow that is established before any faulting or tectonic activity