Environmental memory and a possible seasonal bias in the stable isotope composition of (U–Th)/He-dated goethite from the Canadian Arctic

Yapp, Crayton J.; Shuster, David L.

doi:10.1016/j.gca.2011.04.029

Cited by 19 publications

(9 citation statements)

References 80 publications

(134 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The (U-Th)/He method has been recently configured and used to date Miocene to Pliocene goethite that diagenetically replaced fossil wood of Eocene age (Yapp & Shuster 2011), and although this particular sample displays a complicated history of diagenetic goethite formation, the application shows some promise for dating goethite-bearing paleosols in deep-time successions.…”

Section: Figurementioning

confidence: 99%

Paleosols as Indicators of Paleoenvironment and Paleoclimate

Tabor

Myers

2015

Annu. Rev. Earth Planet. Sci.

157

View full text Add to dashboard Cite

Paleosols are ancient soils that have been incorporated into the geological record. Soils form in response to interactions among the lithosphere, hydrosphere, biosphere, and atmosphere, so paleosols potentially record physical, biological, and chemical information about past conditions near Earth's surface. As a result, paleosols are an important resource for terrestrial environmental and climatic reconstructions. Long-standing paleosol research topics include morphology, classification, and clay mineralogy, all of which provide information about pedogenic processes and local paleoenvironments. Paleosols are also used to infer processes involved in the development of stratigraphic architecture and basin evolution. Recent paleosol research has introduced semiquantitative and quantitative measures for environmental and chronometric reconstructions that provide insight into major regional to global changes in temperature, precipitation, and atmospheric pCO 2 . These new proxies focus on morphological and chemical transfer functions and stable isotope geochemistry to provide estimates of precipitation, temperature, pCO 2 , and productivity, as well as chronometric estimates of mineral crystallization in deep-time pedogenic systems. Looking forward, consensus must be reached on terminology that most effectively communicates paleosol characteristics and implies important processes. Proxy development will continue to improve as data sets become available across greater ranges of environments and timescales. 11.1

show abstract

Section: Figurementioning

confidence: 99%

Paleosols as Indicators of Paleoenvironment and Paleoclimate

Tabor

Myers

2015

Annu. Rev. Earth Planet. Sci.

157

View full text Add to dashboard Cite

show abstract

“…2009). A description of the sample can be found in Yapp and Shuster (2011). As noted 211 therein, XRD analysis detected no substitution of Al for Fe in the goethite, and there was 212 no XRD-detectable gibbsite.…”

Section: Introduction 62mentioning

confidence: 88%

“…7B. There is scatter evident 474 in the comparison of measured and modeled results in Ax-2 would be minor (Yapp and Shuster, 2011). 493…”

Section: Possible Implications For Oxygen Isotope Analysis Of Goethitmentioning

confidence: 98%

“…δ 18 O values for the evolved CO 2 are newly reported here. For Ax-2, the δ 18 O value of -9.6‰ for structural oxygen is from Yapp and Shuster (2011). For ICAlas-1, the structural oxygen δ 18 O value of -13.2‰ is from Yapp (2000).…”

Section: Conclusion 512mentioning

confidence: 99%

“…Thus, there is no contamination from CO 2 occluded in 213 gibbsite (e.g., Schroeder and Melear, 1999;Tabor and Yapp, 2005c). Minor amounts of 214 XRD-detectable lepidocrocite (γ-FeOOH) and hematite are present in Ax-2, but the 215 amounts appear to be too small to be of analytical significance (Yapp and Shuster, 2011). 216…”

Section: Introduction 62mentioning

confidence: 99%

See 2 more Smart Citations