Contributions of Asian dust to subtropical soils of Southeast China based on Nd isotope

2021 ◽  
Author(s):  
Jianwu Li ◽  
Yucheng Ren ◽  
Fangfang Zhang ◽  
Yongfu Li ◽  
Yunying Fang ◽  
...  
Keyword(s):  
Asian Dust ◽  
Nd Isotope ◽  
Southeast China ◽  
Subtropical Soils

TRACE ELEMENT AND Sr-Nd ISOTOPE GEOCHEMISTRY OF FLUORITE FROM THE XIANGSHAN URANIUM DEPOSIT, SOUTHEAST CHINA

2006 ◽  
Vol 101 (8) ◽  
pp. 1613-1622 ◽  
Author(s):  
Y.-h. Jiang ◽  
H.-f. Ling ◽  
S.-y. Jiang ◽  
W.-z. Shen ◽  
H.-h. Fan ◽  
...  
Keyword(s):  
Trace Element ◽  
Uranium Deposit ◽  
Isotope Geochemistry ◽  
Nd Isotope ◽  
Southeast China

Contribution of Asian dust to soils in Southeast China estimated with Nd and Pb isotopic compositions

2020 ◽  
Vol 39 (6) ◽  
pp. 911-919
Author(s):  
Jianwu Li ◽  
Zhaoliang Song ◽  
Lukas Van Zwieten ◽  
Li Ruan ◽  
Feili Li
Keyword(s):  
Asian Dust ◽  
Southeast China ◽  
Isotopic Compositions

Cenozoic Nd isotopic variation of Asian dust in the northern Tibetan Plateau and the North Pacific Ocean

2020 ◽  
Author(s):  
Yibo Yang ◽  
Xiaomin Fang ◽  
Albert Galy ◽  
Rongsheng Yang ◽  
Bowen Song ◽  
...  
Keyword(s):  
North Pacific Ocean ◽  
Asian Dust ◽  
Dust Source ◽  
Nd Isotope ◽  
Source Areas ◽  
Eolian Dust ◽  
The North ◽  
Northern Tibetan Plateau ◽  
Isotopic Records ◽  
The North Pacific

<p>Cenozoic changes in climate, erosion, and atmospheric circulation in Asian interior continents can be reconstructed from records of eolian dust deposition from sediments of the North Pacific Ocean (NPO). Through a careful investigation of Nd isotope as eolian dust source tracer, the well-known core GPC3 in the central NPO has provided so far the most complete Asian dust records since ~40 Ma. Nd isotope in the GPC3 eolian dust thus documented an integrated history of Nd isotopic change of very fine eolian dust contributed from various geological terranes in Asian dust source areas. Unraveling this ~40 Myr-long Nd isotopic change in the NPO provides a first order constraint on the provenance change of the Asian dust source areas as a whole. However, this work cannot be done without an explicit Nd isotopic history for each geological terrane within the broad Asian dust source areas, since the Asian dust source area can be at least divided isotopically into two regions with distinct Nd isotopic values, e.g., the northern Tibetan Plateau (NTP) and the Central Asian Orogen (CAO). In this work, we present new data of river sediment Nd isotopic data around the entire Qaidam and Xining Basins to yield a more comprehensive Nd isotopic regimes at the NTP with compiling previously reported data. We have established an integrated Cenozoic Nd isotopic records of finer dust in the NTP based on previous records and our new Nd isotopic records in the Xining Basin from 52 to 17 Ma and Linxia basin from 23 to 5 Ma using both bulk sediments and clay fractions (<2 μm). After comparison of the reconstructed Nd isotopic variation in fine dust at the NTP with that in the NPO, we have further assessed the relative contributions of NTP and CAO to the Asian dust preserved in the NPO during the last 40 Myr, which indicates a dominant late Oligocene-Neogene uplift and growth of the mountains at the NTP and the CAO regions.</p>

Source and evolution of the “perfect Asian dust storm” in early April 2001: Implications of the Sr–Nd isotope ratios

2005 ◽  
Vol 39 (30) ◽  
pp. 5568-5575 ◽  
Author(s):  
Takanori Nakano ◽  
Masataka Nishikawa ◽  
Ikuko Mori ◽  
Kicheol Shin ◽  
Takahiro Hosono ◽  
...  
Keyword(s):  
Dust Storm ◽  
Isotope Ratios ◽  
Asian Dust ◽  
Nd Isotope ◽  
Asian Dust Storm

The application of Neodymium isotope as a chronostratigraphic tool in North Pacific sediments

2019 ◽  
Vol 157 (5) ◽  
pp. 768-776 ◽  
Author(s):  
Wenfang Zhang ◽  
Gaojun Li ◽  
Jun Chen
Keyword(s):  
North Pacific ◽  
North Pacific Ocean ◽  
Ice Sheets ◽  
Asian Dust ◽  
Ocean Drilling Program ◽  
Nd Isotope ◽  
Aeolian Dust ◽  
Ocean Drilling ◽  
The Past ◽  
Dust Generation

AbstractIt has been suggested that dust generation was closely linked to the development of global ice sheets and/or cooling. This feature has allowed Asian dust to be a potential chronostratigraphic tool in North Pacific Ocean (NPO) sediments. The orbital-scale age control in NPO sediments is usually established by adjusting the benthic-foraminiferal δ18O to the global δ18O stack (LR04). However, it would become difficult if the sediments did not contain enough foraminifera. This study investigates Sr and Nd isotopes, trace elements, mineralogy and grain size of the ‘operationally defined aeolian dust’ (ODED) extracted from the sediments recovered at Ocean Drilling Program (ODP) site 1209B on the Shatsky Rise in the NPO covering the past five glacial–interglacial cycles. The geochemical results show that the ODED at site 1209B is actually a mixture of Asian dust and volcanic ash. The variation of Nd isotope mimics the cycles of glacial–interglacial ice sheets as revealed by the global benthic foraminifera’s oxygen isotope stack (LR04) over the past 500 ka. The low (high) ϵNd values corresponded with the cool (warm) periods. We propose that ϵNd variation reflects the evolving aeolian dust in site 1209 sediments. The excellent agreement between ϵNd values at site 1209B and LR04 stack over the past 500 ka allows establishing the orbital-timescale age control by tuning ϵNd to the LR04 curve. We thus propose that Nd isotope provides a chronostratigraphic technique in NPO sediments, especially for sediments with a limited amount of foraminifera.

Plagioclase weathering by mycorrhizal plants in a Ca-depleted catchment, inferred from Nd isotope ratios and REE composition

2017 ◽  
Vol 51 (6) ◽  
pp. 537-550
Author(s):  
Tasuku Akagi ◽  
Tomohiro Miura ◽  
Rie Takada ◽  
Kazuo Watanabe
Keyword(s):  
Isotope Ratios ◽  
Nd Isotope ◽  
Mycorrhizal Plants
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