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Spatial Variation in Detrital Neodymium Isotopes of Svalbard Surface Sediments

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Spatial Variation in Detrital Neodymium Isotopes of Svalbard Surface Sediments
Other Titles
스발바르 표층 퇴적물 내 쇄설성 네오디뮴 동위원소 비의 공간적 변화
Jang, Kwangchul
Nam, Seung-il
Kim, Jung-Hyun
Issue Date
Jang, Kwangchul, Nam, Seung-il, Kim, Jung-Hyun. 2019. Spatial Variation in Detrital Neodymium Isotopes of Svalbard Surface Sediments. Polar Symposium. KOPRI. 2019.05.13~2019.05.15.
The deposition of sediments in fjords syetem is mainly goverened by the advance and retreat of glaciers, and hence tracing of sediment provenance in fjords is important to understand the ice dynamics and history over time. Here we first present detrital neodymium isotopes (143Nd/144Nd, εNd) measured from the surface sediments retrieved from various fjords on Svalbard in the eastern Arctic Ocean, i.e. Dicksonfjords (n = 8), Hornsund (n = 21), Isfjorden (n = 2), Van Mijenfjorden (n = 2), Wijdefjorden (n = 8) and Woodfjorden (n = 4). The detrital εNd values are variable depending on the geological features such as rock type and age in meltwater drainage area. For example, detrital εNd show the largest fluctuation in Hornsund, where the bedrocks in catchment area include pre-Devonian metamorphic rocks and various younger sedimentary rocks. On the contrary, εNd values in Dicksonfjorden and Woodfjorden are similar to that of Devonian red sandstone, the main lithology of catchment area in two fjord systems. Our data not only indicate the spatial variation in sediment provenance of Svalbard fjords but also emphasize the potential application of detrital neodymium isotopes in paleoclimatic and paleoceanographic studies of fjord sediments.
Conference Name
Polar Symposium
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Conference Date
Appears in Collections  
2017-2018, The variation in the sediment provenance of the ArcticOcean: implications for middle to late Pleistoceneglacial history in the Arctic Ocean (17-18) / Jang, Kwangchul (PN17130)
2019-2019, Changes in environments and coastal geomorphology of Svalbard fjords, Arctic (19-19) / Nam, Seung-il (PN19090)
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