Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205
The high-resolution marine isotope climate record indicates pronounced global cooling during the Langhian (16-13.8 Ma), beginning with the warm middle Miocene climatic optimum and ending with significant Antarctic ice sheet expansion and the transition to "icehouse" conditions. Terrestrial...
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Online Access: | https://dx.doi.org/10.1594/pangaea.836270 https://doi.pangaea.de/10.1594/PANGAEA.836270 |
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ftdatacite:10.1594/pangaea.836270 2023-05-15T13:59:27+02:00 Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 Bader, Nicholas E Nicolaysen, Kirsten P Lopez-Maldonado, Ricardo Murray, Kira E Mudd, Anna C 2014 application/zip https://dx.doi.org/10.1594/pangaea.836270 https://doi.pangaea.de/10.1594/PANGAEA.836270 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.geoderma.2014.10.007 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY article Supplementary Collection of Datasets Collection 2014 ftdatacite https://doi.org/10.1594/pangaea.836270 https://doi.org/10.1016/j.geoderma.2014.10.007 2022-02-09T13:31:34Z The high-resolution marine isotope climate record indicates pronounced global cooling during the Langhian (16-13.8 Ma), beginning with the warm middle Miocene climatic optimum and ending with significant Antarctic ice sheet expansion and the transition to "icehouse" conditions. Terrestrial paleoclimate data from this interval is sparse and sometimes conflicting. In particular, there are gaps in the terrestrial record in the Pacific Northwest during the late Langhian and early Serravallian between about 14.5 and 12.5 Ma. New terrestrial paleoclimate data from this time and region could reconcile these conflicting records. Paleosols are particularly useful for reconstructing paleoenvironment because the rate and style of pedogenesis is primarily a function of surface environmental conditions; however, complete and well-preserved paleosols are uncommon. Most soils form in erosive environments that are not preserved, or in environments such as floodplains that accumulate in small increments; the resulting cumulic soils are usually thin, weakly developed, and subject to diagenetic overprinting from subsequent soils. The paleosol at Cricket Flat in northeastern Oregon is an unusually complete and well-preserved paleosol from a middle Miocene volcanic sequence in the Powder River Volcanic Field. An olivine basalt flow buried the paleosol at approximately 13.8 ± 0.6 Ma, based on three 40Ar/39Ar dates on the basalt. We described the Cricket Flat paleosol and used its physical and chemical profile and micromorphology to assess pedogenesis. The Cricket Flat paleosol is an Ultisol-like paleosol, chemically consistent with a high degree of weathering. Temperature and rainfall proxies suggest that Cricket Flat received 1120 ± 180 mm precipitation y-1 and experienced a mean annual temperature of 14.5 ± 2.1 °C during the formation of the paleosol, significantly warmer and wetter than today. This suggests slower cooling after the middle Miocene climatic optimum than is seen in the existing paleosol record. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Antarctic Pacific Lopez ENVELOPE(-63.567,-63.567,-64.850,-64.850) Ricardo ENVELOPE(-63.033,-63.033,-64.867,-64.867) Kira ENVELOPE(155.386,155.386,50.311,50.311) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The high-resolution marine isotope climate record indicates pronounced global cooling during the Langhian (16-13.8 Ma), beginning with the warm middle Miocene climatic optimum and ending with significant Antarctic ice sheet expansion and the transition to "icehouse" conditions. Terrestrial paleoclimate data from this interval is sparse and sometimes conflicting. In particular, there are gaps in the terrestrial record in the Pacific Northwest during the late Langhian and early Serravallian between about 14.5 and 12.5 Ma. New terrestrial paleoclimate data from this time and region could reconcile these conflicting records. Paleosols are particularly useful for reconstructing paleoenvironment because the rate and style of pedogenesis is primarily a function of surface environmental conditions; however, complete and well-preserved paleosols are uncommon. Most soils form in erosive environments that are not preserved, or in environments such as floodplains that accumulate in small increments; the resulting cumulic soils are usually thin, weakly developed, and subject to diagenetic overprinting from subsequent soils. The paleosol at Cricket Flat in northeastern Oregon is an unusually complete and well-preserved paleosol from a middle Miocene volcanic sequence in the Powder River Volcanic Field. An olivine basalt flow buried the paleosol at approximately 13.8 ± 0.6 Ma, based on three 40Ar/39Ar dates on the basalt. We described the Cricket Flat paleosol and used its physical and chemical profile and micromorphology to assess pedogenesis. The Cricket Flat paleosol is an Ultisol-like paleosol, chemically consistent with a high degree of weathering. Temperature and rainfall proxies suggest that Cricket Flat received 1120 ± 180 mm precipitation y-1 and experienced a mean annual temperature of 14.5 ± 2.1 °C during the formation of the paleosol, significantly warmer and wetter than today. This suggests slower cooling after the middle Miocene climatic optimum than is seen in the existing paleosol record. |
format |
Article in Journal/Newspaper |
author |
Bader, Nicholas E Nicolaysen, Kirsten P Lopez-Maldonado, Ricardo Murray, Kira E Mudd, Anna C |
spellingShingle |
Bader, Nicholas E Nicolaysen, Kirsten P Lopez-Maldonado, Ricardo Murray, Kira E Mudd, Anna C Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
author_facet |
Bader, Nicholas E Nicolaysen, Kirsten P Lopez-Maldonado, Ricardo Murray, Kira E Mudd, Anna C |
author_sort |
Bader, Nicholas E |
title |
Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
title_short |
Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
title_full |
Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
title_fullStr |
Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
title_full_unstemmed |
Geochemistry, lithology, and bulk density of Cricket Flat paleosol samples, supplement to: Bader, Nicholas E; Nicolaysen, Kirsten P; Lopez-Maldonado, Ricardo; Murray, Kira E; Mudd, Anna C (2015): Extensive middle Miocene weathering interpreted from a well-preserved paleosol, Cricket Flat, Oregon, USA. Geoderma, 239-240, 195-205 |
title_sort |
geochemistry, lithology, and bulk density of cricket flat paleosol samples, supplement to: bader, nicholas e; nicolaysen, kirsten p; lopez-maldonado, ricardo; murray, kira e; mudd, anna c (2015): extensive middle miocene weathering interpreted from a well-preserved paleosol, cricket flat, oregon, usa. geoderma, 239-240, 195-205 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.836270 https://doi.pangaea.de/10.1594/PANGAEA.836270 |
long_lat |
ENVELOPE(-63.567,-63.567,-64.850,-64.850) ENVELOPE(-63.033,-63.033,-64.867,-64.867) ENVELOPE(155.386,155.386,50.311,50.311) |
geographic |
Antarctic Pacific Lopez Ricardo Kira |
geographic_facet |
Antarctic Pacific Lopez Ricardo Kira |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
https://dx.doi.org/10.1016/j.geoderma.2014.10.007 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.836270 https://doi.org/10.1016/j.geoderma.2014.10.007 |
_version_ |
1766268007097565184 |