Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments
Records of clastic sediment from lakes that receive glacial meltwater provide a means for inferring past glacial fluctuations. However, increased clastic sedimentation has been interpreted to indicate both glacial advance and recession. Here we examine the timing of clastic sediment deposition in Ch...
Published in: | Journal of Quaternary Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
2015
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Online Access: | https://hdl.handle.net/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 |
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ftuperucayetanoh:oai:repositorio.upch.edu.pe:20.500.12866/5737 |
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ftuperucayetanoh:oai:repositorio.upch.edu.pe:20.500.12866/5737 2023-05-15T16:38:03+02:00 Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments Stroup, J.S. Kelly, M.A. Lowell, T.V. Smith, C.A. Beal, S.A. Landis, J.D. Tapia, P.M. 2015 https://hdl.handle.net/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 eng eng Wiley urn:issn:1099-1417 https://hdl.handle.net/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es CC-BY-NC-ND Peru Holocene Late Holocene sedimentation deposition clastic sediment Cuzco [Peru] glacial lake Glacially fed lakes glacier dynamics Glacier extents ice cap ice retreat lacustrine deposit Lake sediment meltwater moraine Quelccaya Ice Cap https://purl.org/pe-repo/ocde/ford#3.02.00 https://purl.org/pe-repo/ocde/ford#1.05.03 info:eu-repo/semantics/article 2015 ftuperucayetanoh https://doi.org/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 2022-08-14T06:59:17Z Records of clastic sediment from lakes that receive glacial meltwater provide a means for inferring past glacial fluctuations. However, increased clastic sedimentation has been interpreted to indicate both glacial advance and recession. Here we examine the timing of clastic sediment deposition in Challpacocha, a glacially fed lake located downvalley from Quelccaya Ice Cap (QIC), Peru, in comparison with known ice cap margin fluctuations. Using a comparison with a nearby non-glacial lake, Yanacocha, we document that a record of clastic sediment flux from Challpacocha reflects meltwater-derived sediment. We then compare the clastic sediment record from Challpacocha with the Qori Kalis glacier moraine record. We find that organic-rich sediment was deposited primarily during the late Holocene advance of QIC (before ~CE 1490). In contrast, clastic sediment was deposited during QIC recession (~CE 1490-1970). Peaks in clastic sediment flux are associated with the onset of ice retreat. We suggest that this pattern of clastic sediment deposition reflects changing meltwater production and/or glacial erosion during ice advance and retreat and supports models of increased clastic sedimentation during ice retreat. Article in Journal/Newspaper Ice cap Repositorio Institucional de la UPCH (Universidad Peruana Cayetano Heredia) Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Journal of Quaternary Science 30 8 830 840 |
institution |
Open Polar |
collection |
Repositorio Institucional de la UPCH (Universidad Peruana Cayetano Heredia) |
op_collection_id |
ftuperucayetanoh |
language |
English |
topic |
Peru Holocene Late Holocene sedimentation deposition clastic sediment Cuzco [Peru] glacial lake Glacially fed lakes glacier dynamics Glacier extents ice cap ice retreat lacustrine deposit Lake sediment meltwater moraine Quelccaya Ice Cap https://purl.org/pe-repo/ocde/ford#3.02.00 https://purl.org/pe-repo/ocde/ford#1.05.03 |
spellingShingle |
Peru Holocene Late Holocene sedimentation deposition clastic sediment Cuzco [Peru] glacial lake Glacially fed lakes glacier dynamics Glacier extents ice cap ice retreat lacustrine deposit Lake sediment meltwater moraine Quelccaya Ice Cap https://purl.org/pe-repo/ocde/ford#3.02.00 https://purl.org/pe-repo/ocde/ford#1.05.03 Stroup, J.S. Kelly, M.A. Lowell, T.V. Smith, C.A. Beal, S.A. Landis, J.D. Tapia, P.M. Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
topic_facet |
Peru Holocene Late Holocene sedimentation deposition clastic sediment Cuzco [Peru] glacial lake Glacially fed lakes glacier dynamics Glacier extents ice cap ice retreat lacustrine deposit Lake sediment meltwater moraine Quelccaya Ice Cap https://purl.org/pe-repo/ocde/ford#3.02.00 https://purl.org/pe-repo/ocde/ford#1.05.03 |
description |
Records of clastic sediment from lakes that receive glacial meltwater provide a means for inferring past glacial fluctuations. However, increased clastic sedimentation has been interpreted to indicate both glacial advance and recession. Here we examine the timing of clastic sediment deposition in Challpacocha, a glacially fed lake located downvalley from Quelccaya Ice Cap (QIC), Peru, in comparison with known ice cap margin fluctuations. Using a comparison with a nearby non-glacial lake, Yanacocha, we document that a record of clastic sediment flux from Challpacocha reflects meltwater-derived sediment. We then compare the clastic sediment record from Challpacocha with the Qori Kalis glacier moraine record. We find that organic-rich sediment was deposited primarily during the late Holocene advance of QIC (before ~CE 1490). In contrast, clastic sediment was deposited during QIC recession (~CE 1490-1970). Peaks in clastic sediment flux are associated with the onset of ice retreat. We suggest that this pattern of clastic sediment deposition reflects changing meltwater production and/or glacial erosion during ice advance and retreat and supports models of increased clastic sedimentation during ice retreat. |
format |
Article in Journal/Newspaper |
author |
Stroup, J.S. Kelly, M.A. Lowell, T.V. Smith, C.A. Beal, S.A. Landis, J.D. Tapia, P.M. |
author_facet |
Stroup, J.S. Kelly, M.A. Lowell, T.V. Smith, C.A. Beal, S.A. Landis, J.D. Tapia, P.M. |
author_sort |
Stroup, J.S. |
title |
Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
title_short |
Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
title_full |
Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
title_fullStr |
Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
title_full_unstemmed |
Late Holocene fluctuations of Quelccaya Ice Cap, Peru, registered by nearby lake sediments |
title_sort |
late holocene fluctuations of quelccaya ice cap, peru, registered by nearby lake sediments |
publisher |
Wiley |
publishDate |
2015 |
url |
https://hdl.handle.net/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Glacial Lake |
geographic_facet |
Glacial Lake |
genre |
Ice cap |
genre_facet |
Ice cap |
op_relation |
urn:issn:1099-1417 https://hdl.handle.net/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/20.500.12866/5737 https://doi.org/10.1002/jqs.2821 |
container_title |
Journal of Quaternary Science |
container_volume |
30 |
container_issue |
8 |
container_start_page |
830 |
op_container_end_page |
840 |
_version_ |
1766028349529915392 |