Week 7 references Flashcards Preview

Glaciers and Glaciation > Week 7 references > Flashcards

Flashcards in Week 7 references Deck (25)
Loading flashcards...
1
Q

Controls on erosion and form

A

Sugden and Joh 1976

2
Q

Small landform types

A

Benn and Evans 1998

3
Q

P-forms originally thought to be due to abrasion of plastically deforming ice

A

Dahl 1965

4
Q

P-forms are similar to water eroded scour marks

A

Shaw 1988

5
Q

P-forms have striae on their face so must be glacial

A

Goldthwaite 1979

6
Q

P-forms; striae created after formation and their tortuous appearance suggests its not ice

A

Shaw 1988

7
Q

P-forms observed with debris rich basal ice in situ

A

Boulton 1974

8
Q

P-forms observed with ice turning corners

A

Rea and Whlley 1994

9
Q

P-forms and fluvial features represent alternating erosion forms

A

Boulton 1974

10
Q

Roche moutons tend to form under thin ice with fluctuating Pw

A

Sudden et al 1992

11
Q

Bedrock structure is important in the formation of roche moutonnees

A

Sugden et al 1992

Roberts et al 2005

Lane et al 2014

12
Q

Nye channels can be used to reconstruct subglacial meltwater drainage and equipotential contours

A

Booth and hallet 1993

13
Q

Tunnel valleys formed by steady state meltwater drainage over deformable bed towards end of glacial stage

A

Shoemaker 1986

14
Q

Tunnel valleys formed as time-transgressive formation close to ice margin

A

Kristensen et al 2008

15
Q

Later meltwater channels can be used to reconstruct marginal recession and ice sheet elevation

A

Greenwood et al 2007

16
Q

Largest pro-glacial channels from by jokulhlaups e.g. channeled scablands in Washington State, USA

A

Baker and Bunker 1985

17
Q

Streamlined hard beds

A

Eyles et al 2012/2015

Krabbendam et al 2016

18
Q

Quarrying and abrasion in rock basins and over deepening and enhanced by meltwater pressure variations

A

Hooke 1991

Kor et al 1991

19
Q

In troughs and fjords positive feedback is linked to topographic steering and erosion proportional to ice discharge

A

Jamieson et al 2008

Kessler et al 2008

20
Q

Cirques = flat-floored/overdeepened basin connected to steep back wall by concave slope

A

Benn and Evans 1998

21
Q

Types of cirques

A

Benn and Evans 1998

22
Q

Cirques develop from more than one episode of occupancy

A

Evans and Cox 1995

23
Q

Density/orientation/altitude of cirques can be used as palaeoclimate indicators

A

Evans 1977

24
Q

Jakoshavn Isbrae forms landscape of areal scour and selective linear erosion

A

Sugden 1974

25
Q

Recent studies of the various scales of landforms at Jakobshavn Isbrae to reconstruct ice sheet and ice stream evolution

A

Roberts et al 2005, 2010