Bedrock Geology UK North: The surface layer - Revision history

Dbk at 12:33, 30 January 2015

2015-01-30T12:33:48Z

← Older revision		Revision as of 13:33, 30 January 2015
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	'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.		'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.

	<gallery widths=200px>		<center>
			<gallery widths=250px heights=200px>
	Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]		Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]
	Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.		Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.
	Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. P064460.		Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. P064460.
	</gallery>		</gallery>
			</center>

	==Bedrock Geology UK North - contents==		==Bedrock Geology UK North - contents==

Dbk at 14:21, 29 January 2015

2015-01-29T14:21:36Z

← Older revision		Revision as of 15:21, 29 January 2015
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	Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. P064460.		Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. P064460.
	</gallery>		</gallery>

			==Bedrock Geology UK North - contents==
			{{bedrockNorth}}


	[[Category:Bedrock Geology UK North\| 1]]		[[Category:Bedrock Geology UK North\| 1]]

Dbk: Protected "Bedrock Geology UK North: The surface layer" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite)) [cascading]

2014-06-11T12:22:24Z

Protected "Bedrock Geology UK North: The surface layer" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite)) [cascading]

← Older revision		Revision as of 13:22, 11 June 2014
(No difference)

Dbk at 13:00, 21 May 2014

2014-05-21T13:00:39Z

← Older revision		Revision as of 14:00, 21 May 2014
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	'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.		'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.

	<gallery widths=~~250px~~>		<gallery widths=200px>
	Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]		Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]
	Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.		Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.

Dbk at 13:00, 21 May 2014

2014-05-21T13:00:23Z

← Older revision		Revision as of 14:00, 21 May 2014
Line 6:		Line 6:
	'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.		'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.

	<gallery ~~heights~~=~~200px~~>		<gallery widths=250px>
	Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]		Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]
	Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.		Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.

Dbk at 13:00, 21 May 2014

2014-05-21T13:00:07Z

← Older revision		Revision as of 14:00, 21 May 2014
Line 6:		Line 6:
	'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.		'''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.

	<gallery ~~mode~~=~~"packed"~~>		<gallery heights=200px>
	Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]		Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]
	Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.		Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.

Dbk at 09:17, 20 May 2014

2014-05-20T09:17:13Z

← Older revision		Revision as of 10:17, 20 May 2014
Line 7:		Line 7:

	<gallery mode="packed">		<gallery mode="packed">
	Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://~~bgsintranet~~/asset-bank/action/~~viewFullSizedImage~~?id=4152&~~size~~=~~1000~~ P002861.]		Image:P002861.jpg\|A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://geoscenic.bgs.ac.uk/asset-bank/action/viewAsset?id=4152&index=0&total=1&view=viewSearchItem P002861.]
	Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. ~~[http://bgsintranet/asset-bank/action/viewFullSizedImage?id=27691&size=1000~~ P219672.]		Image:P219672.jpg\|Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. P219672.
	Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. ~~[http://bgsintranet/asset-bank/action/viewFullSizedImage?id=11337&size=1000~~ P064460.]		Image:P064460.jpg\|Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. P064460.
	</gallery>		</gallery>


	[[Category:Bedrock Geology UK North\| 1]]		[[Category:Bedrock Geology UK North\| 1]]

Dbk: /* Glaciation */

2014-05-15T13:15:57Z

Glaciation

@@ Line 1: / Line 1: @@
 {{BedN}}
 ==Glaciation==
 '''The great variety of rocks that underlie Britain''' and Ireland can only rarely be clearly seen at the surface. Sea cliffs and mountain crags provide the exception rather than the rule, and for the most part the geological features are concealed beneath a cover of loose detritus, soil and vegetation. Some of this has been formed in situ, from the weathering of the underlying rocks, but across much of northern Britain and Ireland the superficial cover was introduced, quite recently in geological terms, by ice sheets and meltwater during an ‘ice age’ that began to affect north-west Europe from about 2.6 million years ago with the last glaciers disappearing from the Scottish Highlands only about 10 500 years ago. During this period, bitterly cold intervals alternated with relatively warmer conditions, and the glaciers and ice sheets advanced and retreated accordingly. As they did so, they carried in and left behind vast quantities of sand, rubble and huge erratic boulders ('''Plate P002861'''). Sheets of till — a heterogeneous mixture of rock debris — were plastered over the landscape, and sculpted by the passage of the ice into streamlined, elongate mounds. The till deposits commonly range up to tens of metres in thickness. Once the ice began to melt, copious meltwater washed out sand and gravel and redeposited it in enormous fluvial spreads, whilst piles of debris built up as moraines around the margins of the residual glaciers and now create distinctive landforms ('''Plates P219672 and P064460''').
 '''Although in rather less dramatic fashion''', the cycle of erosion and deposition continues today. Eroded detritus from our hills and mountains is carried down by rivers and either redeposited in flood plains and estuaries, or carried farther out to sea into the subsiding marine basins that surround our coasts. So are formed the rocks of tomorrow.
 [[Category:Bedrock Geology UK North| 1]]

Dbk: /* Glaciation */

2013-09-18T12:53:52Z

Glaciation

← Older revision		Revision as of 13:53, 18 September 2013
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	==Glaciation==		==Glaciation==

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Dbk: /* Glaciation */

2013-09-18T12:53:24Z

Glaciation

← Older revision		Revision as of 13:53, 18 September 2013
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	==Glaciation==		==Glaciation==

	{\| class="wikitable" width="100pt" style="margin-left:~~0px~~; margin-right:0px; margin-bottom:10px; float:~~center~~; text-align:left;"		{\| class="wikitable" width="100pt" style="margin-left:40px; margin-right:0px; margin-bottom:10px; float:right; text-align:left;"
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	\|-		\|-
	\| A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=4152&size=1000 P002861.]		\| A large erratic boulder of Devonian conglomerate dumped in glacial outwash sand and gravel near Callander, Perthshire. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=4152&size=1000 P002861.]
	\|}		\|}

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	\| <img src="http://bgsintranet/asset-bank/action/directLinkImage?assetId=27691&width=~~300~~&height=~~285~~">		\| <img src="http://bgsintranet/asset-bank/action/directLinkImage?assetId=27691&width=200&height=150">
	\|-		\|-
	\| Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=27691&size=1000 P219672.]		\| Hummocky moraines in Glen Torridon, Sutherland, seen in the middle distance, were abandoned by retreat of glaciers only about 10 500 years ago. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=27691&size=1000 P219672.]
	\|-		\|-
	\| <img src="http://bgsintranet/asset-bank/action/directLinkImage?assetId=11337&width=~~300~~&height=~~285~~">		\| <img src="http://bgsintranet/asset-bank/action/directLinkImage?assetId=11337&width=200&height=150">
	\|-		\|-
	\| Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=11337&size=1000 P064460.]		\| Sand and gravel ridges north of Carstairs, Lanarkshire, were deposited by subglacial rivers in channels originally confined by ice. [http://bgsintranet/asset-bank/action/viewFullSizedImage?id=11337&size=1000 P064460.]