XRD mineralogy of sediments from the Greenland east coast
Quantitative X-Ray Diffraction (qXRD) analysis of the <2 mm sediment fraction from surface (sea floor) samples, and marine sediment cores that span the last 10-12 cal ka BP, are used to describe spatial and temporal variations in non-clay mineral compositions for an area between Kangerlussuaq Tro...
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Format: | Dataset |
Language: | English |
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PANGAEA
2011
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.758534 https://doi.org/10.1594/PANGAEA.758534 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758534 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Albite Anorthite Anorthoclase ARK-VII/1 ARK-X/2 Biotite Bytownite Calcite Chert Clay minerals DEPTH sediment/rock Diatoms Diopside Dolomite East Greenland Sea Elevation of event Event label Ferrotschermakite Giant box corer GIK21849-1 PS17/015 GKG Halite Hematite Fe2O3 Hochstetter Bugten East Greenland Illite Iron-Chlorite Iron-Dolomite Kaiser-Franz-Josef-Fjord Kaolinite Kolbeinsey Ridge Labradorite Latitude of event Longitude of event Maghemite Magnetite Microcline Muscovite Non-clay minerals Oligoclase Orthoclase Polarstern PS17 PS1849-1 PS2623-1 PS2627-5 PS2628-2 |
spellingShingle |
Albite Anorthite Anorthoclase ARK-VII/1 ARK-X/2 Biotite Bytownite Calcite Chert Clay minerals DEPTH sediment/rock Diatoms Diopside Dolomite East Greenland Sea Elevation of event Event label Ferrotschermakite Giant box corer GIK21849-1 PS17/015 GKG Halite Hematite Fe2O3 Hochstetter Bugten East Greenland Illite Iron-Chlorite Iron-Dolomite Kaiser-Franz-Josef-Fjord Kaolinite Kolbeinsey Ridge Labradorite Latitude of event Longitude of event Maghemite Magnetite Microcline Muscovite Non-clay minerals Oligoclase Orthoclase Polarstern PS17 PS1849-1 PS2623-1 PS2627-5 PS2628-2 Andrews, John T Jennings, Anne E Coleman, George C Eberl, Dennis D XRD mineralogy of sediments from the Greenland east coast |
topic_facet |
Albite Anorthite Anorthoclase ARK-VII/1 ARK-X/2 Biotite Bytownite Calcite Chert Clay minerals DEPTH sediment/rock Diatoms Diopside Dolomite East Greenland Sea Elevation of event Event label Ferrotschermakite Giant box corer GIK21849-1 PS17/015 GKG Halite Hematite Fe2O3 Hochstetter Bugten East Greenland Illite Iron-Chlorite Iron-Dolomite Kaiser-Franz-Josef-Fjord Kaolinite Kolbeinsey Ridge Labradorite Latitude of event Longitude of event Maghemite Magnetite Microcline Muscovite Non-clay minerals Oligoclase Orthoclase Polarstern PS17 PS1849-1 PS2623-1 PS2627-5 PS2628-2 |
description |
Quantitative X-Ray Diffraction (qXRD) analysis of the <2 mm sediment fraction from surface (sea floor) samples, and marine sediment cores that span the last 10-12 cal ka BP, are used to describe spatial and temporal variations in non-clay mineral compositions for an area between Kangerlussuaq Trough and Scoresby Sund (?67°-70°N), East Greenland. Bedrock consists primarily of an early Tertiary alkaline complex with high weight% of pyroxene and plagioclase. Farther inland and to the north, the bedrock is dominantly felsic with a high fraction of quartz and potassium feldspars. Principal Component (PC) analysis of the non-clay sediment compositions indicates the importance of quartz and pyroxene as compositional end members, with an abrupt shift from quartz and k-feldspar dominated sediments north of Scoresby Sund to sediments rich in pyroxene and plagioclase feldspars offshore from the early Tertiary basaltic outcrop. Coarse (<2 mm or <1 mm) ice-rafted sediments are largely absent from the trough sediments between ?8 and 5 cal ka BP, but then increase in the last 4 cal ka BP. Compositional unmixing of the sediments in Grivel Basin and Kangerlussuaq Trough indicate the dominance of local over long distance sediment sources, with pulses of sediment from tidewater glaciers in Kangerlussuaq and Nansen fjords reaching the inner shelf during the Neoglaciation. The change in IRD is more dramatic in the sediment grain-size proxies than in the quartz wt%. Forty to seventy percent of the variance in the quartz records from either side of Denmark Strait is explained by low frequency trends, but the data from the Grivel Basin, East Greenland, are distinctly different, with an approximate 2500 yr periodicity. |
format |
Dataset |
author |
Andrews, John T Jennings, Anne E Coleman, George C Eberl, Dennis D |
author_facet |
Andrews, John T Jennings, Anne E Coleman, George C Eberl, Dennis D |
author_sort |
Andrews, John T |
title |
XRD mineralogy of sediments from the Greenland east coast |
title_short |
XRD mineralogy of sediments from the Greenland east coast |
title_full |
XRD mineralogy of sediments from the Greenland east coast |
title_fullStr |
XRD mineralogy of sediments from the Greenland east coast |
title_full_unstemmed |
XRD mineralogy of sediments from the Greenland east coast |
title_sort |
xrd mineralogy of sediments from the greenland east coast |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.758534 https://doi.org/10.1594/PANGAEA.758534 |
op_coverage |
MEDIAN LATITUDE: 73.044888 * MEDIAN LONGITUDE: -18.377129 * SOUTH-BOUND LATITUDE: 70.129000 * WEST-BOUND LONGITUDE: -24.610000 * NORTH-BOUND LATITUDE: 74.858330 * EAST-BOUND LONGITUDE: -15.407500 * DATE/TIME START: 1990-06-15T00:00:00 * DATE/TIME END: 1994-09-14T21:31:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 0.19 m |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) ENVELOPE(-18.687,-18.687,67.149,67.149) ENVELOPE(-16.917,-16.917,68.833,68.833) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(-24.610000,-15.407500,74.858330,70.129000) |
geographic |
Greenland Kangerlussuaq Kolbeinsey Kolbeinsey Ridge Scoresby Scoresby Sund Sund |
geographic_facet |
Greenland Kangerlussuaq Kolbeinsey Kolbeinsey Ridge Scoresby Scoresby Sund Sund |
genre |
Denmark Strait East Greenland Greenland Greenland Sea Kangerlussuaq Kolbeinsey Scoresby Sund |
genre_facet |
Denmark Strait East Greenland Greenland Greenland Sea Kangerlussuaq Kolbeinsey Scoresby Sund |
op_relation |
Andrews, John T; Jennings, Anne E; Coleman, George C; Eberl, Dennis D (2010): Holocene variations in mineral and grain-size composition along the East Greenland glaciated margin (ca 67°–70°N): Local versus long-distance sediment transport. Quaternary Science Reviews, 29(19-20), 2619-2632, https://doi.org/10.1016/j.quascirev.2010.06.001 Eberl, Dennis D (2003): User's guide to RockJock - A program for determining quantitative mineralogy from powder X-ray diffraction data. U.S. Geological Survey Open-File Report 2003-78, 47 pp, https://pubs.usgs.gov/of/2003/of03-078/ https://doi.pangaea.de/10.1594/PANGAEA.758534 https://doi.org/10.1594/PANGAEA.758534 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.758534 https://doi.org/10.1016/j.quascirev.2010.06.001 |
_version_ |
1766396715595726848 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758534 2023-05-15T16:00:42+02:00 XRD mineralogy of sediments from the Greenland east coast Andrews, John T Jennings, Anne E Coleman, George C Eberl, Dennis D MEDIAN LATITUDE: 73.044888 * MEDIAN LONGITUDE: -18.377129 * SOUTH-BOUND LATITUDE: 70.129000 * WEST-BOUND LONGITUDE: -24.610000 * NORTH-BOUND LATITUDE: 74.858330 * EAST-BOUND LONGITUDE: -15.407500 * DATE/TIME START: 1990-06-15T00:00:00 * DATE/TIME END: 1994-09-14T21:31:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 0.19 m 2011-03-24 text/tab-separated-values, 612 data points https://doi.pangaea.de/10.1594/PANGAEA.758534 https://doi.org/10.1594/PANGAEA.758534 en eng PANGAEA Andrews, John T; Jennings, Anne E; Coleman, George C; Eberl, Dennis D (2010): Holocene variations in mineral and grain-size composition along the East Greenland glaciated margin (ca 67°–70°N): Local versus long-distance sediment transport. Quaternary Science Reviews, 29(19-20), 2619-2632, https://doi.org/10.1016/j.quascirev.2010.06.001 Eberl, Dennis D (2003): User's guide to RockJock - A program for determining quantitative mineralogy from powder X-ray diffraction data. U.S. Geological Survey Open-File Report 2003-78, 47 pp, https://pubs.usgs.gov/of/2003/of03-078/ https://doi.pangaea.de/10.1594/PANGAEA.758534 https://doi.org/10.1594/PANGAEA.758534 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Albite Anorthite Anorthoclase ARK-VII/1 ARK-X/2 Biotite Bytownite Calcite Chert Clay minerals DEPTH sediment/rock Diatoms Diopside Dolomite East Greenland Sea Elevation of event Event label Ferrotschermakite Giant box corer GIK21849-1 PS17/015 GKG Halite Hematite Fe2O3 Hochstetter Bugten East Greenland Illite Iron-Chlorite Iron-Dolomite Kaiser-Franz-Josef-Fjord Kaolinite Kolbeinsey Ridge Labradorite Latitude of event Longitude of event Maghemite Magnetite Microcline Muscovite Non-clay minerals Oligoclase Orthoclase Polarstern PS17 PS1849-1 PS2623-1 PS2627-5 PS2628-2 Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.758534 https://doi.org/10.1016/j.quascirev.2010.06.001 2023-01-20T08:52:04Z Quantitative X-Ray Diffraction (qXRD) analysis of the <2 mm sediment fraction from surface (sea floor) samples, and marine sediment cores that span the last 10-12 cal ka BP, are used to describe spatial and temporal variations in non-clay mineral compositions for an area between Kangerlussuaq Trough and Scoresby Sund (?67°-70°N), East Greenland. Bedrock consists primarily of an early Tertiary alkaline complex with high weight% of pyroxene and plagioclase. Farther inland and to the north, the bedrock is dominantly felsic with a high fraction of quartz and potassium feldspars. Principal Component (PC) analysis of the non-clay sediment compositions indicates the importance of quartz and pyroxene as compositional end members, with an abrupt shift from quartz and k-feldspar dominated sediments north of Scoresby Sund to sediments rich in pyroxene and plagioclase feldspars offshore from the early Tertiary basaltic outcrop. Coarse (<2 mm or <1 mm) ice-rafted sediments are largely absent from the trough sediments between ?8 and 5 cal ka BP, but then increase in the last 4 cal ka BP. Compositional unmixing of the sediments in Grivel Basin and Kangerlussuaq Trough indicate the dominance of local over long distance sediment sources, with pulses of sediment from tidewater glaciers in Kangerlussuaq and Nansen fjords reaching the inner shelf during the Neoglaciation. The change in IRD is more dramatic in the sediment grain-size proxies than in the quartz wt%. Forty to seventy percent of the variance in the quartz records from either side of Denmark Strait is explained by low frequency trends, but the data from the Grivel Basin, East Greenland, are distinctly different, with an approximate 2500 yr periodicity. Dataset Denmark Strait East Greenland Greenland Greenland Sea Kangerlussuaq Kolbeinsey Scoresby Sund PANGAEA - Data Publisher for Earth & Environmental Science Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Kolbeinsey ENVELOPE(-18.687,-18.687,67.149,67.149) Kolbeinsey Ridge ENVELOPE(-16.917,-16.917,68.833,68.833) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Sund ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(-24.610000,-15.407500,74.858330,70.129000) |