Category Archives: Redcar Mudstone

August 2011 – Fossil Wood

A well-preserved specimen of fossil wood recovered from the Redcar Mudstone Formation near Staithes.

Plants growing on land are rarely preserved fossils because continental conditions may not be very favourable for the process of fossilisation.
Fossil wood is not usually found associated with the rest of the tree (leaves and roots) and identification can be difficult, in these cases the specimens are given a special botanical name. These [...]

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Boulby – Cowbar Foreshore

View of Cowbar Nab from Staithes Harbour showing beds of the Staithes Formation capped by glacial 'till'.

The cliffs for about 2 km to the west of Cowbar Nab are capped by glacial till, bedrock being at 40 to 50m O.D. Staithes Beck has cut a deep channel through the till in to the solid strata. On the coast, several landslips and rockfalls can be seen and, in contrast, examples of slow, gradual marine erosion. The marine erosion has been the subject of detailed studies by Agar (1960) and by Durham University in recent years.

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Hummersea Mini Geo-Trail

View the geomorphology of this area (much of which has now been donated to Tees Valley Wildlife Trust. The scarp line of Saltwick Sandstone is set back from the coast and is paralleled underground by the subcrop of the Cleveland Ironstone Formation (see the geological map). The, therefore, deep embayment is infilled by till that is much landslipped on the seawards side. The Snailah Ponds, still shown on modern maps, are said to have been infilled by material from Boulby Potash Mine development.

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Boulby Quarries

View of Boulby Quarries (foreground) showing Cowbar Nab near Staithes (background). Taken from the Cleveland Way above Sallow Tree Plain.

Boulby Quarry and the sea cliffs beneath (making use of the tracks down to the shore) are where several 19th century and, more recently, geologists such as Chowns made measured sections. That by Lewis Hunton (1836) is the most notable as he independently recognized the importance of collecting fossils in-situ, and relating the fossils found to the beds in which they occur bolstering the emerging concept of biostratigraphy.

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December 2010 – Fool’s Gold

Pyrite-skinned nodule embedded in the Bituminous Shale at Rosedale Wyke, North Yorkshire.

For this month’s article we are going to take a look at a commonly occurring mineral having a long history of association with humankind. Fool’s Gold is a common name used to describe a number of different minerals including weathered biotite mica, though most frequently the name [...]

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Cow Bar Nab

Grid Reference NZ 7784 192
BGS Sheet 34
OS Sheet 94
Forwarded as RIGS Part of Skinningrove to Staithes Coast 30/09/2003
Site Description
Site Status Part of the Heritage Coast
Description of Geodiversity Costal cliff nab exposure consisting of the Staithes sandstone formation which is the type locality. The foreshore to the west of the coastal defences consists [...]

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Saltburn to Cattersty Coast

Grid Reference NZ 690 228
BGS Sheet 34
OS Sheet 94
Forwarded as RIGS Part of Saltburn to Skinningrove Coast 30/09/2003

Site Description
Site Status SNCI
Description of Geodiversity Wave washed platform and cliffs revealing Redcar mudstone formation at the base overlain by Staithes sandstone in the cliffs. Cleveland ironstone in upper part of cliffs, all capped by [...]

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Redcar Rocks


Grid Reference NZ 615 253
BGS Sheet 34
OS Sheet 93
Forwarded as RIGS 30/09/2003
Site Description
Site Status SSSI
Description of Geodiversity Wave washed platform of Redcar mudstone. Locality reveals the lowest Lias group exposure in the Tees Valley
Literature References Along the Scar – Dennis Goldring 2001
The Regional Coastline of Yorkshire – J.W.Steers 1967
Site Map

Site Assessment

Access and [...]

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Coatham Rocks

Grid Reference NZ 610 260
BGS Sheet 34
OS Sheet 93
Forwarded as RIGS 30/09/2003
Site Description
Site Status SNCI
Description of Geodiversity Wave washed platform of Redcar mudstone with small exposure of overlying Staithes sandstone exposed at low tide
Literature References Along the Scar – Denis Goldring 2001
The Regional Coastline of Yorkshire – J.W.Steers 1967
Site Map

Site Assessment

Access and [...]

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Hummersea

The view east showing cliff and foreshore toward Loftus Alum Quarry from the top of Hummersea steps.

Superb sea cliffs and rocky foreshore (scar) with extensive Lias Group exposures. Much geomorphological and industrial archaeological interest. The Cleveland Way passes along the cliff top. The coastal scenery is impressive.

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