Caves in non-limestone rocks of Norway
The gneisses and schist bedrock in Bjugn, Åfjord and Ål counties of Norway are remarkably rich in caves and shelters. The caves are mainly developed along tectonic structures, primarily prominent fissure zones and nappes. Five modes of origin seem reasonable: 1. Tectonic movements and gravity slidin...
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Veröffentlicht in: | Norsk geografisk tidsskrift 1984-01, Vol.38 (3-4), p.207-208 |
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description | The gneisses and schist bedrock in Bjugn, Åfjord and Ål counties of Norway are remarkably rich in caves and shelters. The caves are mainly developed along tectonic structures, primarily prominent fissure zones and nappes. Five modes of origin seem reasonable:
1. Tectonic movements and gravity sliding, producing displacement of hillsides.
2. Frost shattering.
3. Wave abrasion during stages of high sea-levels.
4. Preferential weathering in brecciated zones.
5. 'Karstic' dissolution of small, isolated marble lenses within the gneisses.
In many cases, two or more of the processes appear to have worked together. Abundant speleothem growth suggests that calcareous zones exist in the rocks.
The caves reach a horizontal extent of up to 200 m and vertical depths of 55 m. These much neglected cave types arc valuable shelters and habitats for animals, as well as paleontologically important pit-fall traps. Some of the caves and shelters are also potential archeological localities. |
doi_str_mv | 10.1080/00291958408552130 |
format | Article |
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1. Tectonic movements and gravity sliding, producing displacement of hillsides.
2. Frost shattering.
3. Wave abrasion during stages of high sea-levels.
4. Preferential weathering in brecciated zones.
5. 'Karstic' dissolution of small, isolated marble lenses within the gneisses.
In many cases, two or more of the processes appear to have worked together. Abundant speleothem growth suggests that calcareous zones exist in the rocks.
The caves reach a horizontal extent of up to 200 m and vertical depths of 55 m. These much neglected cave types arc valuable shelters and habitats for animals, as well as paleontologically important pit-fall traps. Some of the caves and shelters are also potential archeological localities.</description><identifier>ISSN: 0029-1951</identifier><identifier>EISSN: 1502-5292</identifier><identifier>DOI: 10.1080/00291958408552130</identifier><identifier>CODEN: NGGTA2</identifier><language>eng</language><publisher>Oslo: Taylor & Francis Group</publisher><subject>Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Geomorphology, landform evolution ; Surficial geology</subject><ispartof>Norsk geografisk tidsskrift, 1984-01, Vol.38 (3-4), p.207-208</ispartof><rights>Copyright Taylor & Francis Group, LLC 1984</rights><rights>1985 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a265t-6b4e9fa526dd139c5f293ea4c4434479a0f6ff75685f1b469034edf004fdce7b3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/00291958408552130$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/00291958408552130$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>314,776,780,4009,27902,27903,27904,59623,60412</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=8905170$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>schrøder, Iain</creatorcontrib><title>Caves in non-limestone rocks of Norway</title><title>Norsk geografisk tidsskrift</title><description>The gneisses and schist bedrock in Bjugn, Åfjord and Ål counties of Norway are remarkably rich in caves and shelters. The caves are mainly developed along tectonic structures, primarily prominent fissure zones and nappes. Five modes of origin seem reasonable:
1. Tectonic movements and gravity sliding, producing displacement of hillsides.
2. Frost shattering.
3. Wave abrasion during stages of high sea-levels.
4. Preferential weathering in brecciated zones.
5. 'Karstic' dissolution of small, isolated marble lenses within the gneisses.
In many cases, two or more of the processes appear to have worked together. Abundant speleothem growth suggests that calcareous zones exist in the rocks.
The caves reach a horizontal extent of up to 200 m and vertical depths of 55 m. These much neglected cave types arc valuable shelters and habitats for animals, as well as paleontologically important pit-fall traps. Some of the caves and shelters are also potential archeological localities.</description><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geomorphology, landform evolution</subject><subject>Surficial geology</subject><issn>0029-1951</issn><issn>1502-5292</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1984</creationdate><recordtype>article</recordtype><recordid>eNp1j8tKxEAQRRtRMI5-gLssxF20-pWkwY0EXzDoRteh0umCaJIeuoND_t4Zom7E1V3UOXW5jJ1zuOJQwjWAMNzoUkGpteASDljCNYhMCyMOWbK_ZzuAH7OTGN8BQEpeJuyywk8X025MRz9mfTe4OPnRpcHbj5h6Sp992OJ8yo4I--jOvnPF3u7vXqvHbP3y8FTdrjMUuZ6yvFHOEGqRty2XxmoSRjpUVimpVGEQKCcqdF5q4o3KDUjlWgJQ1FpXNHLF-PLXBh9jcFRvQjdgmGsO9X5o_WfozrlYnA1Giz0FHG0Xf8XSgObFHrtZsG4kHwbc-tC39YRz78OPI_9v-QLAN2O1</recordid><startdate>19840101</startdate><enddate>19840101</enddate><creator>schrøder, Iain</creator><general>Taylor & Francis Group</general><general>Universitetsforlaget</general><general>Norske geografiske selskab</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19840101</creationdate><title>Caves in non-limestone rocks of Norway</title><author>schrøder, Iain</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a265t-6b4e9fa526dd139c5f293ea4c4434479a0f6ff75685f1b469034edf004fdce7b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1984</creationdate><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Geomorphology, landform evolution</topic><topic>Surficial geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>schrøder, Iain</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Norsk geografisk tidsskrift</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>schrøder, Iain</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Caves in non-limestone rocks of Norway</atitle><jtitle>Norsk geografisk tidsskrift</jtitle><date>1984-01-01</date><risdate>1984</risdate><volume>38</volume><issue>3-4</issue><spage>207</spage><epage>208</epage><pages>207-208</pages><issn>0029-1951</issn><eissn>1502-5292</eissn><coden>NGGTA2</coden><abstract>The gneisses and schist bedrock in Bjugn, Åfjord and Ål counties of Norway are remarkably rich in caves and shelters. The caves are mainly developed along tectonic structures, primarily prominent fissure zones and nappes. Five modes of origin seem reasonable:
1. Tectonic movements and gravity sliding, producing displacement of hillsides.
2. Frost shattering.
3. Wave abrasion during stages of high sea-levels.
4. Preferential weathering in brecciated zones.
5. 'Karstic' dissolution of small, isolated marble lenses within the gneisses.
In many cases, two or more of the processes appear to have worked together. Abundant speleothem growth suggests that calcareous zones exist in the rocks.
The caves reach a horizontal extent of up to 200 m and vertical depths of 55 m. These much neglected cave types arc valuable shelters and habitats for animals, as well as paleontologically important pit-fall traps. Some of the caves and shelters are also potential archeological localities.</abstract><cop>Oslo</cop><pub>Taylor & Francis Group</pub><doi>10.1080/00291958408552130</doi><tpages>2</tpages></addata></record> |
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language | eng |
recordid | cdi_pascalfrancis_primary_8905170 |
source | Taylor & Francis Journals Complete |
subjects | Earth sciences Earth, ocean, space Exact sciences and technology Geomorphology, landform evolution Surficial geology |
title | Caves in non-limestone rocks of Norway |
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