Zr/Rb ratio in the Chinese loess sequences and its implication for changes in the East Asian winter monsoon strength

Chen, Jun; Chen, Yang; Liu, Lianwen; Ji, Junfeng; Balsam, William; Sun, Youbin; Lu, Huayu

doi:10.1016/j.gca.2005.11.029

Cited by 154 publications

(132 citation statements)

References 59 publications

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“…Loess and associated deposits (e.g., paleosols, saline lake deposits) house enormous potential for paleoclimatic reconstruction. Analogizing again to the CLP, various attributes of loess (e.g., grain size, magnetic susceptibility, and geochemistry) have been mined to reconstruct climatic parameters that include atmospheric circulation (wind velocity and direction), seasonality, and precipitation (e.g., Zhou et al 1990;An et al 1991;Bloemendal et al 1995;Liu et al 1995;Ding et al 2002;Sun 2002;Balsam et al 2004;Vandenberghe et al 2004;Hao and Guo 2005;Chen et al 2006), at resolutions extending to millennial. Many of these same metrics are preservable and measurable in deep-time loess deposits and have enabled climate reconstructions ranging to sub-precessional scales .…”

Section: Discussion: Why Core Continental Red Beds and Evaporites?mentioning

confidence: 99%

The paleoclimatic and geochronologic utility of coring red beds and evaporites: a case study from the RKB core (Permian, Kansas, USA)

Soreghan

Benison

Foster

et al. 2014

Int J Earth Sci (Geol Rundsch)

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Drill core is critical for robust and high-resolution reconstructions of Earth’s climate record, as well demonstrated from both marine successions and modern long-lived lake systems. Deep-time climate reconstructions increasingly require core-based data, but some facies, notably red beds and evaporites, have garnered less attention for both paleoclimatic and geochronologic analyses. Here, we highlight studies from the Rebecca K. Bounds (RKB) core, a nearly continuous, >1.6 km drill core extending from the Cretaceous to the Mississippian, recovered from the US Midcontinent by Amoco Production Company in 1988, and serendipitously made available for academic research. Recent research conducted on this core illustrates the potential to recover high-resolution data for geochronologic and climatic reconstructions from both the fine-grained red bed strata, which largely represent paleo-loess deposits, and associated evaporite strata. In this case, availability of core was instrumental for (1) accessing a continuous vertical section that establishes unambiguous superposition key to both magnetostratigraphic and paleoclimatic analyses, and (2) providing pristine sample material from friable, soluble, and/or lithofacies and mineralogical species otherwise poorly preserved in surface exposures. The potential for high-resolution paleoclimatic reconstruction from coring of deep-time loess strata in particular remains severely underutilized.

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Section: Discussion: Why Core Continental Red Beds and Evaporites?mentioning

confidence: 99%

The paleoclimatic and geochronologic utility of coring red beds and evaporites: a case study from the RKB core (Permian, Kansas, USA)

Soreghan

Benison

Foster

et al. 2014

Int J Earth Sci (Geol Rundsch)

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“…For this reason, Zr/Rb and Zr/Ti were chosen for use in reconstruction of flood records. The Zr/Rb ratio has been used as a sediment grain-size proxy in marine (Dypvik and Harris 2001), lacustrine (Kylander et al 2011), subaqueous deltaic sediments (Wang et al 2011) and in loess (Chen et al 2006). The Zr/Ti ratio has also been used as a grain-size proxy in lacus-trine sediments (Oldfield et al 2003).…”

Section: Geochemical Grain-size Proxies: Zr/rb and Zr/timentioning

confidence: 99%

Micro-XRF Applications in Fluvial Sedimentary Environments of Britain and Ireland: Progress and Prospects

Turner

Jones

Brewer³

et al. 2015

Micro-XRF Studies of Sediment Cores

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This chapter considers applications of micro-XRF in fluvial depositional environments and presents case-studies from Britain and Ireland in three key river management areas: flood reconstruction; pollution and provenance mapping; and floodplain sediment dynamics. Although fluvial sediment archives are typically shorter and more fragmented than marine and lake sediment records, they do offer significant palaeoenvironmental potential, not least because of the sensitivity of river systems to environmental change. A major consideration in micro-XRF analysis, however, is the continuity and heterogeneity of alluvial sediments and the integrity of accretionary records once they have been subjected to post-depositional processes, such as human disturbance and pedogenesis. Thus far, micro-XRF applications in fluvial environments have been limited. One research area currently being developed is the field of flood reconstruciton, where elements and, in particular, element ratios (e.g. Zr/Rb, Zr/Ti) can be used as particle size proxies. Micro-XRF core scanning technologies allow for analysis at the event-scale, which hitherto has been unachievable in silt and clay sediments. The potential to build and signifcantly enhance our understanding of longer term flooding patterns and non-stationarity, offers considerable scope for augmenting instrumental records and providing new perspectives for contemporary river management. Rapid geochemical assessment of fluvial sedimentary deposits can also be used to support floodplain reconstruction studies and pollution investigations, but greater scope will emerge from the calibration of raw XRF cout data to elemental concentrations. In this paper we demonstrate the potential for using micro-XRF data in sediment provenance investigation, but improvements in error quantification and propagation need to be explored. Given that river alluvium plays an integral role in the cycling and storage of contaminants, further applications in this field would be hugely beneficial for river managers. Although sediment heterogeneity places significant challenges to the quantification of micro-ZRF core scanner results, there has been little attempt to establish what these limitation mean in practical terms

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“…Low Pb content in the 2006 Beijing dust indicates less addition from local dust from vehicular emissions in the Beijing city vicinity. Jahn et al (2001), Ding et al (2001), andChen et al (2006) have used various geochemical indices and some trace element ratios to study paleoclimate reconstructions from eolian sediment based on the different geochemical properties of elements. Most indicators, however, are based on the assumption of homogeneous composition of the dust provenance (Rao et al, 2006).…”

Section: Provenance Of Dustmentioning

confidence: 99%

Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance

Feng

Zhu

et al. 2008

Geochem. J.

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A heavy dust fell in Beijing on April [16][17] 2006. The dust storm formed in middle and western Inner Mongolia, China, under a strong Mongolian Cyclone. During the dust fall, the near-surface wind speed was insignificant in Beijing. The minimal wind speed at ground level indicates that the dust must have been transported by upper northwestern winds, and the local dust of Beijing contributed little to dust fall. The lack of a contribution from local dust differed from previous dust fall events in Beijing. Therefore, this dust fall provides good information on the dust source. Dust samples colleted during this event and Pleistocene loess samples from the Beijing area were analyzed for magnetic susceptibility, bulk particle and quartz grain size distributions, bulk particle and quartz micro-textures, mineralogy, carbonate content, major element concentrations, trace element and rare earth element (REE) concentrations, and the oxygen isotope composition of quartz. The results indicate the following. (1)

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Zr/Rb ratio in the Chinese loess sequences and its implication for changes in the East Asian winter monsoon strength

Cited by 154 publications

References 59 publications

The paleoclimatic and geochronologic utility of coring red beds and evaporites: a case study from the RKB core (Permian, Kansas, USA)

The paleoclimatic and geochronologic utility of coring red beds and evaporites: a case study from the RKB core (Permian, Kansas, USA)

Micro-XRF Applications in Fluvial Sedimentary Environments of Britain and Ireland: Progress and Prospects

Heavy dust fall in Beijing, on April 16-17, 2006: Geochemical properties and indications of the dust provenance

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