Physical Geography Depositional Landforms

Question 1

Moraine definition

Answer 1

An accumulation of unconsolidated (unsorted) material DEPOSITED by GLACIERS. These accumulations are usually unsorted as there are many different sized particles deposited in moraines. The SEDIMENT in Moraines can have ANGULAR EDGES

Question 2

Different types of moraines

Answer 2

Recessional
Terminal/end
Lateral
Medial
Ground
Push
Hummocky

Question 3

Terminal/End Moraine

Answer 3

Accumulation of unconsolidated material deposited at the SNOUT OF THE GLACIER.

Question 4

Lateral moraine

Answer 4

Unconsolidated material deposited along THE SIDE of an ALPINE GLACIER. When the glacier melts, EMBANKMENTS OF MATERIAL are left ALONG the VALLEY SIDES

Question 5

Medial moraine

Answer 5

Found in the centre of glacier
Formed through the merging of two LATERAL MORAINES where two glaciers joint formation

Question 6

Ground moraine

Answer 6

Material dragged along the base of the glacier

Question 7

Push moraine

Answer 7

Found only in glaciers that have RETREATED and then ABRADED Again - BRUSH PAN ANALOG
Material has already been DEPOSITED and is SHOVED up into A PILE as the GLACIER ADVANCES
KEY- INDIVIDUAL ROCKS that have been pushed UPWARDS from their ORIGINAL HORIZONTAL POSITION

Question 8

Hummocky Moraine

Answer 8

Formed during a SERIES of SMALL but REPEATED READVANCES OF GLACIERS pushing MATERIAL into IRREGULAR MOUNDS closely HEAPED TOGETHER

Question 9

Drumlin definition

Answer 9

Elongated features that can a 1km or more in length one end is quite steep whilst the other side tapers away it ground level
Their shame is similar to a ramp.

Question 10

Key Drumlin Formation

Answer 10

Their formation is not fully understood

Question 11

Drumlin formation 1

Answer 11

Thinning of Ice as it spreads over a lowland area reducing its ability to carry debris

Question 12

Drumlin formation 2

Answer 12

Reshaping of previously deposited material during a subsequent re-advance

Question 13

Drumlin formation 3

Answer 13

Lodgement of subglacial debris as it melts out of the basal ice layers

Question 14

Drumlin formation 4

Answer 14

Accumulation of material around a bedrock obstruction-known as rock-cored drumlins

Question 15

Till sheet formation

Answer 15

Formed when a large mass of UNSTRATIFIED DRIFT is deposited at the end of a PERIOD OF ICE SHEET advance which SMOOTHS the UNDERLYING SURFACE