Geology 1050I Waterton-Glacier

Front 1

The west side of the Continental Divide receives more precipitation than the east side due to the:

Back 1

Rain shadow effect

Front 2

What are most of the rocks in the park?

Back 2

Precamrian-aged metasedimentary rocks

Front 3

What name is given to the thick sequence of bedrock in the park?

Back 3

Belt Supergroup

Front 4

In what type of environment were these rocks deposited?

Back 4

Shallow rifting sea

Front 5

The fine-grained rocks such as the mudstones were lightly metamorphosed to a rock between a chale (a poorly-lithified sedimentary rock) and a slate (a low-grade metamorphic rock). This rock is called:

Back 5

argillite

Front 6

The "cabbafe hear" structures seen in some of the rocks in the park are:

Back 6

fossil stromatolites

Front 7

Stromatolites are evidence of:

Back 7

colonies of blue-green algae

Front 8

Some of the rocks in tha park are green due to:

Back 8

copper

Front 9

What type of environement is indicated by the presence of pillow basalts?

Back 9

Water

Front 10

A vesicle in an igneous rock which has been filled in by crystals is called:

Back 10

amygdule

Front 11

A horizontal tabular igneous intrusion is called a:

Back 11

Sill

Front 12

When a sequence of older rocks is pushed almost horizontally or at a very low angle over a sequence of younger roks, we call it a:

Back 12

Thrust fault

Front 13

The fault that moved the Belt rocks to their present position is called the:

Back 13

Lewis Overthrust

Front 14

A structural window, such as the North Fork Valley, where one can "see" through a thrust sheet to the younger rocks below is called a:

Back 14

fenster

Front 15

An erosional outlier, such as Chief Mountain, where erosion has separated a block from the rest of the thrust sheet, is called a:

Back 15

klippe

Front 16

What other large structures characterizes Glacier Park?

Back 16

a syncline

Front 17

Along the east side of the park, alpine glaciers joined together and spread out, forming a ____________ glacier.

Back 17

Piedmont

Front 18

A lake that fills the depression at the head of a glacial valley

Back 18

tarn

Front 19

a knife-sharp ridge between two glacial valleys

Back 19

arete

Front 20

a bowl-shaped depression at the head of a glacial valley

Back 20

cirque

Front 21

a low area on the ridge between two glacial valleys

Back 21

col

Front 22

Small tributary glacial valleys high above the main glacial trough

Back 22

hanging valleys

Front 23

Scratches left in the bedrock after a glacier scrapes over it

Back 23

Glacial striations

Front 24

a string of lakes filling depressions in a glacial trough

Back 24

paternoster lakes

Front 25

a sharp pyramid-shaped peak

Back 25

horn

Front 26

A pile of loose debris at the foot of a cliff is called a:

Back 26

talus slope

Front 27

The stream channels carrying meltwater from the glacier may become choked with sediment and form an intertwined branching pattern called:

Back 27

braided

Front 28

True or False: An alpine glacier carves a wide U-shaped valley called a glacial trough

Back 28

True

Front 29

True or False: Meltwater coming off a glacier has a beautiful crystal clear appearance because there is no fine-grained sediment in it.

Back 29

false

Front 30

True or False: Most glaciers in the park are growing larger.

Back 30

False

Front 31

True or False: Glacial debris which piles up at the front or sides of a glacier is called a moraine.

Back 31

True