Differential weathering of feldspar and pyroxene in an arctic‐alpine environment
Abstract The relative relief of adjacent plagioclase and pyroxene minerals was accurately measured on a recently‐exhumed outcrop of gabbroic rocks in Leirdalen, southern Norway. Above the level of the former soil surface the feldspars protrude above the pyroxenes whereas below that level the pyroxen...
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crwiley:10.1002/esp.3290150706 2024-06-02T08:01:03+00:00 Differential weathering of feldspar and pyroxene in an arctic‐alpine environment McCarroll, Danny 1990 http://dx.doi.org/10.1002/esp.3290150706 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290150706 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290150706 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms volume 15, issue 7, page 641-651 ISSN 0197-9337 1096-9837 journal-article 1990 crwiley https://doi.org/10.1002/esp.3290150706 2024-05-03T11:12:09Z Abstract The relative relief of adjacent plagioclase and pyroxene minerals was accurately measured on a recently‐exhumed outcrop of gabbroic rocks in Leirdalen, southern Norway. Above the level of the former soil surface the feldspars protrude above the pyroxenes whereas below that level the pyroxenes are higher. Differential relief declines with increasing depth of burial down to 80 cm. On exposed surfaces the mean loss of pyroxene relative to feldspar is 103 cm 3 m −2 of rock surface. With burial down to 50 cm in an arctic‐alpine Brown Soil the mean loss of feldspar relative to pyroxene is 179 cm 3 m −2 . These figures represent minimum amounts of weathering over about 9000 years. The results confirm the importance of chemical weathering in arctic‐alpine environments and the techniques may provide useful physical measures of degree of weathering for use in rate studies and relative‐dating. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Leirdalen ENVELOPE(8.736,8.736,62.987,62.987) Norway Earth Surface Processes and Landforms 15 7 641 651 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The relative relief of adjacent plagioclase and pyroxene minerals was accurately measured on a recently‐exhumed outcrop of gabbroic rocks in Leirdalen, southern Norway. Above the level of the former soil surface the feldspars protrude above the pyroxenes whereas below that level the pyroxenes are higher. Differential relief declines with increasing depth of burial down to 80 cm. On exposed surfaces the mean loss of pyroxene relative to feldspar is 103 cm 3 m −2 of rock surface. With burial down to 50 cm in an arctic‐alpine Brown Soil the mean loss of feldspar relative to pyroxene is 179 cm 3 m −2 . These figures represent minimum amounts of weathering over about 9000 years. The results confirm the importance of chemical weathering in arctic‐alpine environments and the techniques may provide useful physical measures of degree of weathering for use in rate studies and relative‐dating. |
format |
Article in Journal/Newspaper |
author |
McCarroll, Danny |
spellingShingle |
McCarroll, Danny Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
author_facet |
McCarroll, Danny |
author_sort |
McCarroll, Danny |
title |
Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
title_short |
Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
title_full |
Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
title_fullStr |
Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
title_full_unstemmed |
Differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
title_sort |
differential weathering of feldspar and pyroxene in an arctic‐alpine environment |
publisher |
Wiley |
publishDate |
1990 |
url |
http://dx.doi.org/10.1002/esp.3290150706 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290150706 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290150706 |
long_lat |
ENVELOPE(8.736,8.736,62.987,62.987) |
geographic |
Arctic Leirdalen Norway |
geographic_facet |
Arctic Leirdalen Norway |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Earth Surface Processes and Landforms volume 15, issue 7, page 641-651 ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.3290150706 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
15 |
container_issue |
7 |
container_start_page |
641 |
op_container_end_page |
651 |
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1800745309651861504 |