The Solid Earth - Chapter 4: Glacial Deposits

Question 1

True or false: the sediments acquired by glaciers must be deposited when the ice melts

Answer 1

True

Question 2

An all encompassing terms for sediments of glacial origin

Answer 2

drift

Question 3

What is a big signifier that deposits are glacial?

Answer 3

The weathering is mechanical with little to no chemical alterations

Question 4

Two distinct types of glacial drift

Answer 4

till

stratified drift

Question 5

Materials that are deposited directly by glacier

Answer 5

Till

Question 6

Sediments laid down by glacial meltwater

Answer 6

stratified drift

Question 7

True or false: deposits of till are characteristically unsorted mixtures of many particle sizes

Answer 7

True

Question 8

Boulders found in the till or lying free on the surface

Answer 8

Glacial erratics

Question 9

Stratified drift is sorted according to the ___ and ____ of fragments

Answer 9

size

weight

Question 10

Stratified drift contains mostly ___ and ____

Answer 10

sand

gravel

Question 11

Features created by deposition which are just layers or ridges of till

Answer 11

moraines

Question 12

When the glacier wastes away, the sides of a valley glacier accumulate large quantities of debris from the valley walls and leave them behind as ridges called

Answer 12

Lateral moraines

Question 13

This type of moraine is formed when two valley glaciers coalesce to form a single ice stream

Answer 13

medial

Question 14

Which kind of moraine forms at the terminus of a glacier?

Answer 14

End

Question 15

The end moraine that makes the farthest advance of the glacier

Answer 15

terminal moraine

Question 16

the moraines that formed as the ice front that become stationary during retreat

Answer 16

recessional moraine

Question 17

As the glacier recedes, a layer of till is laid down, forming a gently undulating surface of ___ moraine

Answer 17

ground

Question 18

Ground moraine has a ____ effect

Answer 18

leveling

Question 19

When a ramplike surface composed of stratified drift is built adjacent to the downstream edge of end moraines and formed in association with an ice sheet

Answer 19

outwash plain

Question 20

When the outwash plain is confined to a mountain alley it has a different name:

Answer 20

Valley train

Question 21

These pockmark end morains and outwash plains with basins or depressions known as

Answer 21

kettles

Question 22

Kettles form when a block stagnant ice gets buried in _____ and melts

Answer 22

drift

Question 23

True or false: Walden Pond was formed from a Glacier kettle being filled with water

Answer 23

true

Question 24

Streamlined asymmetrical hills composed of till

Answer 24

Drumlins

Question 25

What are clusters of drumlins called?

Answer 25

drumlin fields

Question 26

Ridges that are deposits made by streams flowing in tunnels beneath the ice near the terminus of the glacier

Answer 26

eskers