Editing Carboniferous of the Wear Valley and Derwent Gorge, County Durham - an excursion

Jump to navigation Jump to search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

This page supports semantic in-text annotations (e.g. "[[Is specified as::World Heritage Site]]") to build structured and queryable content provided by Semantic MediaWiki. For a comprehensive description on how to use annotations or the #ask parser function, please have a look at the getting started, in-text annotation, or inline queries help pages.

Latest revision Your text
Line 37: Line 37:
 
The area is a botanical '''S.S.S.I.''' with access by footpath, but the land is private. Upper Weardale is reached by the A689 from Crook in the east or from Alston in the west. Buses (Weardale Motor Services) travel up the dale from Crook and Bishop Auckland.
 
The area is a botanical '''S.S.S.I.''' with access by footpath, but the land is private. Upper Weardale is reached by the A689 from Crook in the east or from Alston in the west. Buses (Weardale Motor Services) travel up the dale from Crook and Bishop Auckland.
  
At Westgate park in the lay-by on the north side of the road just west of the centre of the village [NY 906 380]. Take the road to Rookhope north from the middle of the village and after 300 m turn left on the footpath past High Mill and along the side of Middlehope Burn ([[:File:YGS_NORTROCK_FIG_15_1.jpg|Figure 15.1]]). The stream gives fairly continuous exposures of Dinantian Yoredale cyclothems in the upper part of the Brigantian Stage. Sandstone and interbedded shale high in the Scar Cyclothem can be seen in the stream at the mill and it forms waterfalls up stream.
+
At Westgate park in the lay-by on the north side of the road just west of the centre of the village [NY 906 380]. Take the road to Rookhope north from the middle of the village and after 300 m turn left on the footpath past High Mill and along the side of Middlehope Burn ([[:File:YGS_NORTROCK_FIG_15_1.jpg|Figure 15.1]]). The stream gives fairly continuous exposures of Dinantian Yoredale cyclothems in the upper part of the Brigantian Stage. Sandstone and interbedded shale high in the Scar Cyclothem can be seen in the stream at the mill and it forms waterfalls up stream.
  
The Five Yard Limestone crops out above this sequence and forms a wide series of exposures in the bed of the stream [NY 907 385]. Spring Bank level on the right of the path is the drainage level of Slitt Mine. Shale and sandstone above the limestone can be seen in the stream with the thicker Six Fathom Hazle well exposed in waterfalls at the first bridge across the stream. Just above the second bridge the Three Yard Limestone crops out in the sides of the stream and the succession of shales and sandstone above the limestone can be seen up stream to Slitt Mine [NY 906 392]. Slitt Mine shaft lies on the west side of the stream and is capped by steel plates. It was sunk to 178 m, reaching the base of the Great Whin '''Sill''' here intruded into the Tyne Bottom Limestone. The mine worked Slitt Vein between 1818 and 1880 and produced around 100 000 tons of lead ore (Dunham, 1990). Small amounts of '''galena, siderite''' and '''fluorite''' can be found on the dumps and washing floors adjacent to the shaft. Although the mine buildings have long disappeared, level entrances, waterwheel pits, engine mountings, and bingsteads etc. can still be seen.
+
The Five Yard Limestone crops out above this sequence and forms a wide series of exposures in the bed of the stream [NY 907 385]. Spring Bank level on the right of the path is the drainage level of Slitt Mine. Shale and sandstone above the limestone can be seen in the stream with the thicker Six Fathom Hazle well exposed in waterfalls at the first bridge across the stream. Just above the second bridge the Three Yard Limestone crops out in the sides of the stream and the succession of shales and sandstone above the limestone can be seen up stream to Slitt Mine [NY 906 392]. Slitt Mine shaft lies on the west side of the stream and is capped by steel plates. It was sunk to 178 m, reaching the base of the Great Whin '''Sill''' here intruded into the Tyne Bottom Limestone. The mine worked Slitt Vein between 1818 and 1880 and produced around 100 000 tons of lead ore (Dunham, 1990). Small amounts of '''galena, siderite''' and '''fluorite''' can be found on the dumps and washing floors adjacent to the shaft. Although the mine buildings have long disappeared, level entrances, waterwheel pits, engine mountings, and bingsteads etc. can still be seen.
  
From Slitt Mine a path leads eastwards up the valley side past Slitt Pasture opencut to the Westgate-Rookhope road at West Rigg opencut [NY 911 392]. This is a shorter route that cuts out the higher part of the Middlehope Burn section.
+
From Slitt Mine a path leads eastwards up the valley side past Slitt Pasture opencut to the Westgate-Rookhope road at West Rigg opencut [NY 911 392]. This is a shorter route that cuts out the higher part of the Middlehope Burn section.
  
Continuing up Middlehope Burn, the Nattrass Gill Hazle sandstone at the top of the Three Yard Cyclothem is well exposed above the path and shortly up stream the Four Fathom Limestone can be seen above the sandstone. The limestone crops out at path level a little further on. Extensive old buildings beyond this are all that remains of a waterwheel crushing mill and washing floors of Middlehope Shield Mine. Old dams and lagoons are still visible. White's Level, on the east of the stream at the top of the washing floors, is one of the mine entrances. Another entrance is Middlehope Level further up stream at [NY 904 402]. This mine produced some 15 800 tons of lead ore between 1818 and 1864 from veins to the east of the burn (Dunham, 1990).
+
Continuing up Middlehope Burn, the Nattrass Gill Hazle sandstone at the top of the Three Yard Cyclothem is well exposed above the path and shortly up stream the Four Fathom Limestone can be seen above the sandstone. The limestone crops out at path level a little further on. Extensive old buildings beyond this are all that remains of a waterwheel crushing mill and washing floors of Middlehope Shield Mine. Old dams and lagoons are still visible. White's Level, on the east of the stream at the top of the washing floors, is one of the mine entrances. Another entrance is Middlehope Level further up stream at [NY 904 402]. This mine produced some 15 800 tons of lead ore between 1818 and 1864 from veins to the east of the burn (Dunham, 1990).
  
Take the track east from Middlehope Level and turn right after a short distance on to a farm track that leads to the road at West Rigg opencut on Slitt Vein [NY 911 392] (Excursion 14). Return to Westgate down the hill by the road.
+
Take the track east from Middlehope Level and turn right after a short distance on to a farm track that leads to the road at West Rigg opencut on Slitt Vein [NY 911 392] (Excursion 14). Return to Westgate down the hill by the road.
  
 
=== Locality 2, Harehope Quarry and Bollihope Burn, near Frosterley, Weardale ===
 
=== Locality 2, Harehope Quarry and Bollihope Burn, near Frosterley, Weardale ===

Please note that all contributions to Earthwise may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Earthwise:Copyrights for details). Do not submit copyrighted work without permission!

Cancel Editing help (opens in new window)

  [] · [[]] · [[|]] · {{}} · · “” ‘’ «» ‹› „“ ‚‘ · ~ | °   · ± × ÷ ² ³ ½ · §
[[Category:]] · [[:File:]] · <code></code> · <syntaxhighlight></syntaxhighlight> · <includeonly></includeonly> · <noinclude></noinclude> · #REDIRECT[[]] · <translate></translate> · <languages/> · ==References== · {{reflist}} · ==Footnote== · {{reflist|group=note}} · <ref group=note> · __notoc__ · {{DEFAULTSORT:}} <div class="someclass noprint"></div> {{clear}} <br>