M a m To r La nd slip

Afte r Rutte r, Arkwrig ht, Ho llo wa y a nd Wa g ho rn, 2003

Click letters to view pictures

B

H

I

JClick here

to view thecross section

A – A’

CD

E

J

I

F

G

A

Click to End Show

Click here to see Strat Table

Looking ENE from A, at Mam Tor .Hummocky slipped Mam Tor Beds are in the fore ground.Black rocks to the left are the Edale Shales.

Click here to move on to BA

Click here to see half Graben analogy

Click here to see further thinning to NEB

General line of fault, but not seen directly from this angle

Half Graben Analogy

Roll Over

Click here to see further thinning to NE

Click here to see half Graben analogy

B

Some years it was possible to repair the road with just a thick layer of tarmac,

others fresh mettle was needed!

Compares with fault movement generating sediment accommodation

space

Click here to move on to CB

Hope Valley Floodplain

Flowed Edale Shales

Collapsed blocks of Mam Tor

beds

Castleton

Trace of line of section – click it to review the section

Looking East from C

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Back edge of listric rotating slip block

Direction of Movement

Note pattern of tensional

gashes

Looking East from D

Click here to look N – down the roadD

Looking NNE from D

“I’m not driving over

that!” –

“Why not?”

Click here to see ‘Why not’D

Click here to see the dislocation from further north on the road

True amplitude of the dislocation is seen at the ‘stiff’ road, but appears

to diminish in the ‘softer’ disturbed bedrock.

Might hill-creep have any influence in hiding the

fault?

Looking SE from DLooking SE

from E

E

Trace of dislocation

Tensional collapse

Back Rotated Block

Curved Slip Plane

Click here to look NNE

Click here to look SE

Looking S from F

F

View from E looking SW to Carb Limestone Massif, hosting Blue

John Mine, at head of valley

Blue John Mine

Click here to move on to G

Click here to look NNEF

Walking Down hill (NNE’ly) from E, across rather deformed tarmac

Click here to move on to GF

Click here to move on to H

Looking WSW from F

This is first of 5 photos of area around G

They show different aspects of ‘nested’ slips.

Click right facing arrow to progress through slides

G

Click here to move on to HG

Fault – Downthrow to the left

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Click here to move on to HG

Rotated Blocks with Tarmac tops

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Click here to re-view the nested slipsG

Rotated Blocks with Tarmac tops

– seen from higher up the hill

Looking WSW from G

Trace of Northerly margin of the slip

Nested slip zone

Click here to move on to I H

I

Looking West across the top of the flowed Edale

shales, exposed MamTor Beds slipped blocks to

Mam Tor, where the scarp is the back slope of the

slip Click here to look NNW

Click here to move on to J

Click here to move on to J

Looking NNE from I

Ground above flowed

Edale Shales is

characteristically

undulose

Top half of person

To scale amplitude of undulations

J

Classic en echelon Tension Gashes

Unfortunately – recently tarred to prevent water

ingress

Arrows indicate shear orientation

Click here to move on to K

Click here to see more shear

J

Classic shear deformation: Tension gash development –

better seen in previous slide, but, here is seen

the development of drag

Shear direction is indicated by

arrows

Click here to move on to J

K

Steep Puff to Blue John Mine

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