Show simple item record

dc.contributor.authorWidga, Chris
dc.contributor.authorWalker, J. Douglas
dc.contributor.authorBoehm, Andrew
dc.date.accessioned2018-11-16T19:24:11Z
dc.date.available2018-11-16T19:24:11Z
dc.date.issued2017-06-07
dc.identifier.citationWidga, C., Walker, J.D. and Boehm, A., 2017. Variability in Bioavailable 87Sr/86Sr in the North American Midcontinent. Open Quaternary, 3(1), p.4. DOI: http://doi.org/10.5334/oq.32en_US
dc.identifier.urihttp://hdl.handle.net/1808/27386
dc.description.abstractStrontium (Sr) isotope tracers are useful for understanding provenance and mobility in biological materials across multiple disciplines. However, the impact of these techniques is highly dependent on the construction of appropriate comparative baselines (i.e., an isoscape). We present the results of a systematic survey of 87Sr/86Sr values from grasses in the North American Midcontinent with a particular emphasis on sedimentary systems. Although 87Sr/86Sr values are highly variable across the region, the Sr isoscape shows multi-scalar patterns that are dependent on local-to-regional trends in surficial geology. High values are found in bedrock-dominated areas such as the Black Hills (SD) and Ozark Uplift (MO), or formerly glaciated areas where surface deposits are dominated by ice-transported Precambrian clasts. The lowest values are found in river valleys that incorporate eroded Neogene sediments into terrace formation. Intermediate values are found in upland loess and alluvial deposits which blanket much of the study area. We demonstrate trends in large-scale variability of the Midcontinent’s 87Sr/86Sr isoscape and suggest that future refinement focus on sub-regional trends in Sr isotope variability.en_US
dc.publisherUbiquity Pressen_US
dc.rights© 2017 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are crediteden_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject87Sr/86Sren_US
dc.subjectIsoscapesen_US
dc.subjectIsotopic tracersen_US
dc.subjectMidcontinenten_US
dc.titleVariability in Bioavailable 87Sr/86Sr in the North American Midcontinenten_US
dc.typeArticleen_US
kusw.kuauthorWalker, J. Douglas
kusw.kudepartmentGeologyen_US
dc.identifier.doi10.5334/oq.32en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

© 2017 The Author(s). This is an open-access article distributed under the terms of the Creative Commons
Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium,
provided the original author and source are credited
Except where otherwise noted, this item's license is described as: © 2017 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited