https://www.ipernity.com/doc/earthwatcher/album/806980 https://cdn.ipernity.com/p/200/FE/AE/1683198.buddy.jpg https://www.ipernity.com/doc/earthwatcher/album/806980 Wed, 29 Jul 2026 23:57:16 +0000 Wed, 29 Jul 2026 23:57:16 +0000 https://www.ipernity.com https://www.ipernity.com/doc/earthwatcher/39021326/in/album/806980 tag:ipernity.com,2006-04-04,doc-39021326 Tue, 04 Apr 2006 23:04:27 +0000 2004-03-22T16:30:43+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021326/in/album/806980"><img src="https://cdn.ipernity.com/200/13/26/39021326.15ec6f0b.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">Textures in the Lower Greensand, exposed in the cliffs at Hunstanton, Norfolk, UK.</div> Lower Greensand <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021326/in/album/806980"><img src="https://cdn.ipernity.com/200/13/26/39021326.15ec6f0b.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">Textures in the Lower Greensand, exposed in the cliffs at Hunstanton, Norfolk, UK.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021318/in/album/806980 tag:ipernity.com,2006-04-04,doc-39021318 Tue, 04 Apr 2006 23:04:27 +0000 2004-03-22T16:40:13+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021318/in/album/806980"><img src="https://cdn.ipernity.com/200/13/18/39021318.4ac74628.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">Cliffs at Hunstanton, Norfolk, UK, illuminated by the late afternoon sun shining through shower clouds offshore. This is probably the best exposure of the Red Chalk in the UK.<br /> <br /> The top-to-bottom sequence is:<br /> <br /> Cenomanian (White) Chalk<br /> <i>-- disconformity -- (~ 2 million year time gap)</i><br /> Hunstanton Formation ('Red Chalk')<br /> Carstone Formation ('Lower Greensand' - brown!)</div> Hunstanton Red Cliffs <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021318/in/album/806980"><img src="https://cdn.ipernity.com/200/13/18/39021318.4ac74628.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">Cliffs at Hunstanton, Norfolk, UK, illuminated by the late afternoon sun shining through shower clouds offshore. This is probably the best exposure of the Red Chalk in the UK.<br /> <br /> The top-to-bottom sequence is:<br /> <br /> Cenomanian (White) Chalk<br /> <i>-- disconformity -- (~ 2 million year time gap)</i><br /> Hunstanton Formation ('Red Chalk')<br /> Carstone Formation ('Lower Greensand' - brown!)</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021230/in/album/806980 tag:ipernity.com,2006-05-12,doc-39021230 Fri, 12 May 2006 07:05:13 +0000 2004-08-16T11:15:06+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021230/in/album/806980"><img src="https://cdn.ipernity.com/200/12/30/39021230.b51c1520.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">'Valkyrie Pinnacle' - a tor of cross-bedded Chatsworth Grit on Froggatt Edge, overlooking the Derwent Valley. Derbyshire, England.</div> Valkyrie Pinnacle - a tor on Froggatt Edge <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021230/in/album/806980"><img src="https://cdn.ipernity.com/200/12/30/39021230.b51c1520.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">'Valkyrie Pinnacle' - a tor of cross-bedded Chatsworth Grit on Froggatt Edge, overlooking the Derwent Valley. Derbyshire, England.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021460/in/album/806980 tag:ipernity.com,2006-07-21,doc-39021460 Fri, 21 Jul 2006 13:47:49 +0000 1980-05-01T00:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021460/in/album/806980"><img src="https://cdn.ipernity.com/200/14/60/39021460.488c99ef.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 1: A view looking along Orgreave S24's face in the Swallow Wood seam. The coal seam is on the right, the banks of hydraulic powered roof supports are on the left. The normal travelling way (a crawl!) is beneath this canopy of supports. In the centre leading away into the distance is the armoured steel conveyor (the 'panzer'). You can also see the sprocket chain that coal cutting machine (not visible here) used to haul itself along the top of the conveyor. <br /> <br /> This particular coal face operated in the year before the mine closed, and it was beset with geological difficulties, which were suspected in advance, and that's why this particular patch of coal was one of the very last to be worked. <br /> <br /> The main problem was the irregular, undulating sandstone roof. In essence, the coal was worked beneath a complex 'fossil' river channel system, where sand originally deposited by the rivers fills in the channels and eventually gets turned into sandstone. In this photo the sandstone is pale grey and sits fairly evenly on top of the coal. But it is already breaking into large lumps and falling out prematurely. Further on, in photos 2 and 3, the river has cut down more deeply and eroded away the vegetation that was to eventually become coal, causing a 'washout'. <br /> <br /> It was part of my job to map these channel features and to try to predict what they would do next. So I spent a lot of time on this particular face. I remember it very well indeed.</div> Orgreave S24&#039;s washout (1 of 3) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021460/in/album/806980"><img src="https://cdn.ipernity.com/200/14/60/39021460.488c99ef.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 1: A view looking along Orgreave S24's face in the Swallow Wood seam. The coal seam is on the right, the banks of hydraulic powered roof supports are on the left. The normal travelling way (a crawl!) is beneath this canopy of supports. In the centre leading away into the distance is the armoured steel conveyor (the 'panzer'). You can also see the sprocket chain that coal cutting machine (not visible here) used to haul itself along the top of the conveyor. <br /> <br /> This particular coal face operated in the year before the mine closed, and it was beset with geological difficulties, which were suspected in advance, and that's why this particular patch of coal was one of the very last to be worked. <br /> <br /> The main problem was the irregular, undulating sandstone roof. In essence, the coal was worked beneath a complex 'fossil' river channel system, where sand originally deposited by the rivers fills in the channels and eventually gets turned into sandstone. In this photo the sandstone is pale grey and sits fairly evenly on top of the coal. But it is already breaking into large lumps and falling out prematurely. Further on, in photos 2 and 3, the river has cut down more deeply and eroded away the vegetation that was to eventually become coal, causing a 'washout'. <br /> <br /> It was part of my job to map these channel features and to try to predict what they would do next. So I spent a lot of time on this particular face. I remember it very well indeed.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021458/in/album/806980 tag:ipernity.com,2006-07-21,doc-39021458 Fri, 21 Jul 2006 13:47:55 +0000 1980-05-01T00:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021458/in/album/806980"><img src="https://cdn.ipernity.com/200/14/58/39021458.3ecef1be.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 2: A view looking along Orgreave S24's face in the Swallow Wood seam. The coal seam which was on the right has now been replaced by "washout" sandstone (light grey in colour). This is much too hard and strong for the normal coal cutting machine to cut through, and there would in any case have been the risk of hot frictional sparking causing ignition of any methane that might be present. <br /> <br /> Instead, the sandstone has to be bored and broken down by firing with permitted explosives. That is what the men in the distance are doing. Previously fired-down sandstone is visible to the right of centre and the whole situation resembles an underground stone quarry rather than a proper longwall coal face.</div> Orgreave S24&#039;s washout (2 of 3) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021458/in/album/806980"><img src="https://cdn.ipernity.com/200/14/58/39021458.3ecef1be.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 2: A view looking along Orgreave S24's face in the Swallow Wood seam. The coal seam which was on the right has now been replaced by "washout" sandstone (light grey in colour). This is much too hard and strong for the normal coal cutting machine to cut through, and there would in any case have been the risk of hot frictional sparking causing ignition of any methane that might be present. <br /> <br /> Instead, the sandstone has to be bored and broken down by firing with permitted explosives. That is what the men in the distance are doing. Previously fired-down sandstone is visible to the right of centre and the whole situation resembles an underground stone quarry rather than a proper longwall coal face.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021446/in/album/806980 tag:ipernity.com,2006-07-21,doc-39021446 Fri, 21 Jul 2006 13:48:00 +0000 1980-05-01T00:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021446/in/album/806980"><img src="https://cdn.ipernity.com/200/14/46/39021446.be5c830f.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 3: A closer view showing the small drilling machine boring the holes for shot firing. You can see previously drilled holes ready to be loaded with explosives.<br /> <br /> This sort of situation caused extensive delays to production, and the difficult and, at times, unstable, roof conditions added to the risk of accident and injury on the face, although fortunately as far as I know, there were no serious incidents on this face (a wonder).<br /> <br /> This whole washout area was around 20 - 30 metres wide from one side to the other, on a coal face that was about 180 metres wide. Eventually the washout sandstone lifted clear of the coal and production was able to be resumed relatively normally, although there were still roof control problems on this face for much of its life.<br /> <br /> It was these sorts of conditions coupled with the fact that there was nowhere else left to work underground that led to the inevitable closure of Orgreave the following year.</div> Orgreave S24&#039;s washout (3 of 3) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021446/in/album/806980"><img src="https://cdn.ipernity.com/200/14/46/39021446.be5c830f.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">This short sequence of three photographs is a rare chance to see how adverse geological conditions affected a (relatively) modern longwall face. They were taken on 2nd May 1980 at Orgreave Colliery, near Sheffield, South Yorkshire.<br /> <br /> Please note that I did not take these photographs. They were taken by my colleague Jim Batty who was the NCB area photographer for South Yorkshire. I have used these on many an occasion to illustrate geology lectures and I am most grateful to him. <br /> <br /> Photo 3: A closer view showing the small drilling machine boring the holes for shot firing. You can see previously drilled holes ready to be loaded with explosives.<br /> <br /> This sort of situation caused extensive delays to production, and the difficult and, at times, unstable, roof conditions added to the risk of accident and injury on the face, although fortunately as far as I know, there were no serious incidents on this face (a wonder).<br /> <br /> This whole washout area was around 20 - 30 metres wide from one side to the other, on a coal face that was about 180 metres wide. Eventually the washout sandstone lifted clear of the coal and production was able to be resumed relatively normally, although there were still roof control problems on this face for much of its life.<br /> <br /> It was these sorts of conditions coupled with the fact that there was nowhere else left to work underground that led to the inevitable closure of Orgreave the following year.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021410/in/album/806980 tag:ipernity.com,2006-08-12,doc-39021410 Sat, 12 Aug 2006 14:42:12 +0000 2006-08-08T11:16:04+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021410/in/album/806980"><img src="https://cdn.ipernity.com/200/14/10/39021410.40160239.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">Ringing Roger is an out-thrusting ridge of gritstone tors overlooking Edale on the south margin of the Kinder plateau.<br /> There is a good path up the ridge with an easy scramble to finish which I think is a much better and quieter route up to the plateau than the slog up Grindsbrook.</div> Ringing Roger <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021410/in/album/806980"><img src="https://cdn.ipernity.com/200/14/10/39021410.40160239.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">Ringing Roger is an out-thrusting ridge of gritstone tors overlooking Edale on the south margin of the Kinder plateau.<br /> There is a good path up the ridge with an easy scramble to finish which I think is a much better and quieter route up to the plateau than the slog up Grindsbrook.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021380/in/album/806980 tag:ipernity.com,2006-08-31,doc-39021380 Thu, 31 Aug 2006 16:11:26 +0000 2006-08-30T16:06:07+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021380/in/album/806980"><img src="https://cdn.ipernity.com/200/13/80/39021380.76727b49.240.jpg?r2" width="169" height="240" alt=""/></a></p><div class="description">Cross-bedded Chatsworth Grit.</div> Another bit of Burbage Edge <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021380/in/album/806980"><img src="https://cdn.ipernity.com/200/13/80/39021380.76727b49.240.jpg?r2" width="169" height="240" alt=""/></a></p><div class="description">Cross-bedded Chatsworth Grit.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021378/in/album/806980 tag:ipernity.com,2006-08-31,doc-39021378 Thu, 31 Aug 2006 16:11:43 +0000 2006-08-30T15:58:53+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021378/in/album/806980"><img src="https://cdn.ipernity.com/200/13/78/39021378.9df94efb.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">Cross-bedded Chatsworth Grit.<br /> <br /> <a href="http://loc.alize.us/#/flickr:230153407" target="_blank" rel="nofollow">See where this picture was taken.</a> <a href="http://www.flickr.com/groups/geotagging/discuss/72157594165549916/" target="_blank" rel="nofollow">[?]</a></div> A bit of Burbage Edge <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021378/in/album/806980"><img src="https://cdn.ipernity.com/200/13/78/39021378.9df94efb.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">Cross-bedded Chatsworth Grit.<br /> <br /> <a href="http://loc.alize.us/#/flickr:230153407" target="_blank" rel="nofollow">See where this picture was taken.</a> <a href="http://www.flickr.com/groups/geotagging/discuss/72157594165549916/" target="_blank" rel="nofollow">[?]</a></div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39021604/in/album/806980 tag:ipernity.com,2006-12-13,doc-39021604 Wed, 13 Dec 2006 00:31:15 +0000 1999-08-01T00:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021604/in/album/806980"><img src="https://cdn.ipernity.com/200/16/04/39021604.7484568b.240.jpg?r2" width="240" height="162" alt=""/></a></p><div class="description">Originally posted for the Guesswhere UK group.<br /> <br /> This distinctive piece of coastline is at Trwyn Maen Melyn, near Aberdaron at the western end the Lleyn Peninsula, NW Wales.<br /> <br /> In geological circles, these blobby rocks are famous here. They are part of the Gwna Mélange, a chaotic mass of diverse rock fragments, boulders and rafts, some of them 100s of metres across, all set in a fine-grained schist matrix. The age is now thought to be Cambrian and the mélange is an example of an <i>olistostrome</i>, a rock assemblage thought to represent a huge submarine debris flow (or several debris flows) into a deep ocean trench which existed here at that time. <br /> <br /> The Gwna Mélange crops out on much of NW Lleyn, Bardsey Island and over considerable parts of N and W Anglesey.</div> Gwna Mélange on the Lleyn Peninsula, NW Wales <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39021604/in/album/806980"><img src="https://cdn.ipernity.com/200/16/04/39021604.7484568b.240.jpg?r2" width="240" height="162" alt=""/></a></p><div class="description">Originally posted for the Guesswhere UK group.<br /> <br /> This distinctive piece of coastline is at Trwyn Maen Melyn, near Aberdaron at the western end the Lleyn Peninsula, NW Wales.<br /> <br /> In geological circles, these blobby rocks are famous here. They are part of the Gwna Mélange, a chaotic mass of diverse rock fragments, boulders and rafts, some of them 100s of metres across, all set in a fine-grained schist matrix. The age is now thought to be Cambrian and the mélange is an example of an <i>olistostrome</i>, a rock assemblage thought to represent a huge submarine debris flow (or several debris flows) into a deep ocean trench which existed here at that time. <br /> <br /> The Gwna Mélange crops out on much of NW Lleyn, Bardsey Island and over considerable parts of N and W Anglesey.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022140/in/album/806980 tag:ipernity.com,2007-04-07,doc-39022140 Sat, 07 Apr 2007 15:51:46 +0000 2007-04-01T12:21:13+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022140/in/album/806980"><img src="https://cdn.ipernity.com/200/21/40/39022140.08efc13d.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">Pleistocene river gravels of the proto-Thames form low cliffs on the south coast of Mersea Island, Essex.<br /> <br /> This is a site of regional geological importance and is a SSSI.<br /> <br /> Active erosion is taking place, with the cliffs receding northwards. Rising sea-levels associated with global warming will exascerbate this effect.</div> Cliff erosion 1 <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022140/in/album/806980"><img src="https://cdn.ipernity.com/200/21/40/39022140.08efc13d.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">Pleistocene river gravels of the proto-Thames form low cliffs on the south coast of Mersea Island, Essex.<br /> <br /> This is a site of regional geological importance and is a SSSI.<br /> <br /> Active erosion is taking place, with the cliffs receding northwards. Rising sea-levels associated with global warming will exascerbate this effect.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022138/in/album/806980 tag:ipernity.com,2007-04-07,doc-39022138 Sat, 07 Apr 2007 15:52:25 +0000 2007-04-01T12:23:22+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022138/in/album/806980"><img src="https://cdn.ipernity.com/200/21/38/39022138.763cb967.240.jpg?r2" width="240" height="163" alt=""/></a></p><div class="description">Pleistocene river gravels of the proto-Thames form low cliffs on the south coast of Mersea Island, Essex.<br /> <br /> This is a site of regional geological importance and is a SSSI.<br /> <br /> Active erosion is taking place, with the cliffs receding northwards. Rising sea-levels associated with global warming will exascerbate this effect.</div> Pleistocene river gravels of the proto-Thames <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022138/in/album/806980"><img src="https://cdn.ipernity.com/200/21/38/39022138.763cb967.240.jpg?r2" width="240" height="163" alt=""/></a></p><div class="description">Pleistocene river gravels of the proto-Thames form low cliffs on the south coast of Mersea Island, Essex.<br /> <br /> This is a site of regional geological importance and is a SSSI.<br /> <br /> Active erosion is taking place, with the cliffs receding northwards. Rising sea-levels associated with global warming will exascerbate this effect.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022092/in/album/806980 tag:ipernity.com,2007-04-08,doc-39022092 Sun, 08 Apr 2007 08:39:49 +0000 2007-04-05T09:32:05+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022092/in/album/806980"><img src="https://cdn.ipernity.com/200/20/92/39022092.eb0de84a.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">Some of the slabs of Chatworth/Rivelin Grit near the road at Upper Burbage Bridge are covered with plant fossils - stems, straps, small trunks, all roughly aligned at right-angles to the current flow direction. A sort of upper Carboniferous log jam, I suppose.</div> Upper Burbage Bridge plant straps <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022092/in/album/806980"><img src="https://cdn.ipernity.com/200/20/92/39022092.eb0de84a.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">Some of the slabs of Chatworth/Rivelin Grit near the road at Upper Burbage Bridge are covered with plant fossils - stems, straps, small trunks, all roughly aligned at right-angles to the current flow direction. A sort of upper Carboniferous log jam, I suppose.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022040/in/album/806980 tag:ipernity.com,2007-04-17,doc-39022040 Tue, 17 Apr 2007 07:22:24 +0000 2000-07-26T10:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022040/in/album/806980"><img src="https://cdn.ipernity.com/200/20/40/39022040.3cc5331a.240.jpg?r2" width="240" height="172" alt=""/></a></p><div class="description">Hope Gap looking eastwards across Cuckmere Haven towards the Seven Sisters.<br /> Brown Palaeogene sands and gravels infill the solution hollow in the Chalk at the top of the cliff on the left.<br /> <br /> Taken with an early Kodak 1-megapixel digital camera.</div> Hope Gap <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022040/in/album/806980"><img src="https://cdn.ipernity.com/200/20/40/39022040.3cc5331a.240.jpg?r2" width="240" height="172" alt=""/></a></p><div class="description">Hope Gap looking eastwards across Cuckmere Haven towards the Seven Sisters.<br /> Brown Palaeogene sands and gravels infill the solution hollow in the Chalk at the top of the cliff on the left.<br /> <br /> Taken with an early Kodak 1-megapixel digital camera.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022038/in/album/806980 tag:ipernity.com,2007-04-17,doc-39022038 Tue, 17 Apr 2007 07:22:43 +0000 2000-07-26T10:00:00+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022038/in/album/806980"><img src="https://cdn.ipernity.com/200/20/38/39022038.275c1a9d.240.jpg?r2" width="180" height="240" alt=""/></a></p><div class="description">Seaford Chalk with solution pipes, infilled with Palaeogene sands and gravels.<br /> Hope Gap, Seaford, Sussex.<br /> <br /> Taken with an early Kodak 1-megapixel digital camera.</div> Hope Gap karst <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022038/in/album/806980"><img src="https://cdn.ipernity.com/200/20/38/39022038.275c1a9d.240.jpg?r2" width="180" height="240" alt=""/></a></p><div class="description">Seaford Chalk with solution pipes, infilled with Palaeogene sands and gravels.<br /> Hope Gap, Seaford, Sussex.<br /> <br /> Taken with an early Kodak 1-megapixel digital camera.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022034/in/album/806980 tag:ipernity.com,2007-04-17,doc-39022034 Tue, 17 Apr 2007 07:23:01 +0000 2004-03-22T16:18:46+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022034/in/album/806980"><img src="https://cdn.ipernity.com/200/20/34/39022034.7c5b0244.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">This is probably the best exposure of the Red Chalk in the UK.<br /> The top-to-bottom sequence is:<br /> <br /> Cenomanian (White) Chalk<br /> <i>-- disconformity -- (~ 2 million year time gap)</i><br /> Hunstanton Formation ('Red Chalk')<br /> Carstone Formation ('Lower Greensand' - brown!)</div> Striped cliffs at Hunstanton, Norfolk. <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022034/in/album/806980"><img src="https://cdn.ipernity.com/200/20/34/39022034.7c5b0244.240.jpg?r2" width="240" height="180" alt=""/></a></p><div class="description">This is probably the best exposure of the Red Chalk in the UK.<br /> The top-to-bottom sequence is:<br /> <br /> Cenomanian (White) Chalk<br /> <i>-- disconformity -- (~ 2 million year time gap)</i><br /> Hunstanton Formation ('Red Chalk')<br /> Carstone Formation ('Lower Greensand' - brown!)</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022842/in/album/806980 tag:ipernity.com,2007-11-04,doc-39022842 Sun, 04 Nov 2007 18:02:46 +0000 2007-11-01T14:35:46+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022842/in/album/806980"><img src="https://cdn.ipernity.com/200/28/42/39022842.6df863c2.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> The South Face of Mother Cap <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022842/in/album/806980"><img src="https://cdn.ipernity.com/200/28/42/39022842.6df863c2.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022840/in/album/806980 tag:ipernity.com,2007-11-04,doc-39022840 Sun, 04 Nov 2007 18:02:58 +0000 2007-11-01T14:33:27+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022840/in/album/806980"><img src="https://cdn.ipernity.com/200/28/40/39022840.3b1d1514.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> Mother Cap west face <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022840/in/album/806980"><img src="https://cdn.ipernity.com/200/28/40/39022840.3b1d1514.240.jpg?r2" width="160" height="240" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022836/in/album/806980 tag:ipernity.com,2007-11-04,doc-39022836 Sun, 04 Nov 2007 18:03:06 +0000 2007-11-01T14:29:21+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022836/in/album/806980"><img src="https://cdn.ipernity.com/200/28/36/39022836.3e869a28.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> Mother Cap north face <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022836/in/album/806980"><img src="https://cdn.ipernity.com/200/28/36/39022836.3e869a28.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, a natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> This was a rather cloudy and gloomy autumn day, but the late afternoon sun provided some low-angle brightness which emphasised the textures of the outcrop.</div> Earthwatcher https://www.ipernity.com/doc/earthwatcher/39022812/in/album/806980 tag:ipernity.com,2007-12-02,doc-39022812 Sun, 02 Dec 2007 16:22:45 +0000 2007-11-29T15:47:56+01:00 nobody@ipernity.com (Earthwatcher) <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022812/in/album/806980"><img src="https://cdn.ipernity.com/200/28/12/39022812.f2153928.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, an extraordinarily photogenic natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> In this photo it is still illuminated by the bright western light a few minutes after sunset.</div> Mother Cap sunset 4 <p class="who"><a href="https://www.ipernity.com/home/earthwatcher">Earthwatcher</a> has posted:</p><p class="preview"><a href="https://www.ipernity.com/doc/earthwatcher/39022812/in/album/806980"><img src="https://cdn.ipernity.com/200/28/12/39022812.f2153928.240.jpg?r2" width="240" height="160" alt=""/></a></p><div class="description">An image from a photostudy of the Mother Cap Stone, an extraordinarily photogenic natural rock tor of cross-bedded Chatsworth Grit (Namurian) high on the South Yorkshire Eastern Edges in the Peak District National Park. <br /> <br /> In this photo it is still illuminated by the bright western light a few minutes after sunset.</div> Earthwatcher