Category Archives: Triassic

April 2011 – Argillites

Shales of the Whitby Mudstone Formation beneath Middle Jurassic sandstone as seen at Rosedale Wyke. The remains of Kettleness alum quarries form the headland in the background.

Welcome to the latest offering in the TVRIGS Rock of the Month series of articles. This month I thought that we might examine a broad group of deposits known as argillaceous rocks, collectively referred to as argillites (clay rocks), as opposed to arenites (sandstones) and rudites (conglomerates, tillites and breccias).
Derived from the Latin Argilla – [...]

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River Leven


Grid Reference NZ 459 096
BGS Sheet 33
OS Sheet 93
Forwarded as RIGS 30/09/2003
Site Description
Site Status SNCI
Description of Geodiversity River-cliff exposure revealing the contact between the Sherwood sandstone and the overlying Mercia mudstone. The Sherwood sandstone forms a washed platform and waterfall.
Literature References
Site Map

Site Assessment

Access and Safety
Comments
Rating

Safety of access
Along footpath to waterfall
10

Safety of [...]

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Stainsby Beck Mudstone


Grid Reference NZ 465 146
BGS Sheet 33
OS Sheet 93
Forwarded as RIGS 30/09/2003
Site Description
Site Status SNCI
Description of Geodiversity Small river-cliff feature revealing an exposure of Mercia mudstone
Literature References
Site Map

Site Assessment

Access and Safety
Comments
Rating

Safety of access
Along footpath from industrial estate
10

Safety of exposure
On opposite river bank footpath
10

Restricting conditions
High flow episodes will cover exposure
6

Multiple exposure
Cleveland Dyke [...]

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Hartlepool Little Scar

Grid Reference NZ 526 304
BGS Sheet 27
OS Sheet 93
Forwarded as RIGS No designation

Site Description
Site Status None
Description of Geodiversity Small exposure revealing a wave washed scar consisting of Sherwood sandstone
Literature References The Geology of the Country Between Durham and West Hartlepool – Dennis Smith 1967
Site Map

Site Assessment

Access and Safety
Comments
Rating

Safety of access
Down safe steps [...]

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