2021

SE0061 : Grass Track on the Lower Flanks of Elbolton

taken 3 years ago, near to Thorpe, North Yorkshire, England

Grass Track on the Lower Flanks of Elbolton
Grass Track on the Lower Flanks of Elbolton
Following a footpath to the hamlet of Thorpe from Far Langerton - here winding around the eastern flanks and base of the limestone reef knoll of Elbolton.
The Craven Cracoean Reef Belt :: SD9860

The Craven Cracoean Reef Belt (CCRB) is an area of geology from Settle to Burnsall in North Yorkshire related to a Lower Carboniferous (Visean - Brigantian) apron reef situated on the southern limit of the Askrigg Block. A series of rounded hills mark the location of flank and mound carbonate deposits that separate 'shallow' shelf deposits north of the Mid Craven fault from 'deeper' deposits of the Craven Basin to the south.

With the development of a barrier like apron reef along the hanging wall of the Mid-Craven Fault; the ramp deposits of the Kinsley Formation (thickly bedded muddy carbonates affected by tides and storms SD6975 : Carboniferous Coral) gave way to back-reef deposits (thinly bedded pure carbonates) of the Cove and Gordale Formations.

The mounds themselves are mostly massive limestone with some areas containing crinoidal deposits, sponges, corals, brachiopods and stromatolites. The earliest reefal structures are small mudmounds, as movement along the Craven Faults progressed the mounds grew into the larger structures visible today. Swinden Quarry is a great example of a core and flank reef that has been dissected by quarrying.

Also worth seeing is the exposure at Loup Scar SE0361 : Loup Scar (5). Flank limestones has been channelised, infilled and rotated by fault movement. This shows the dynamic active environment that these rocks were deposited. See 'Mississippian reef development in the Cracoe Limestone Formation of the southern Askrigg Block, North Yorkshire, UK' by Waters et al., 2017 for more details.


Creative Commons Licence [Some Rights Reserved]   © Copyright Chris Heaton and licensed for reuse under this Creative Commons Licence.
Geographical Context: Paths other tags: Grass Track Public Footpath Reef Knoll Wall Click a tag, to view other nearby images.
This photo is linked from: Automatic Clusters: · Limestone Reef Knoll [5] · Far Langerton [3] · Grass [3] · Flanks [2] ·
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SE0061, 31 images   (more nearby 🔍)
Photographer
Chris Heaton   (more nearby)
Date Taken
Sunday, 21 February, 2021   (more nearby)
Submitted
Wednesday, 24 February, 2021
Subject Location
OSGB36: geotagged! SE 0091 6144 [10m precision]
WGS84: 54:2.9354N 1:59.2556W
Camera Location
OSGB36: geotagged! SE 0086 6139
View Direction
Northeast (about 45 degrees)
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Image Type (about): geograph 
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