Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean

Wang, Rujian; Wei, Xiao; März, Christian; Li, Qianyu

doi:10.1016/j.gloplacha.2013.05.017

Cited by 31 publications

(61 citation statements)

References 126 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coulthard et al (2010) and Hanslik et al (2010). The same corrections have also been applied to 14 C ages in core 03M03 from the Chukchi Abyssal Plain (Wang et al, 2013;see Fig. 2 for location).…”

Section: Ams 14 C Datingmentioning

confidence: 99%

Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history

et al. 2017

View full text Add to dashboard Cite

Sediment core ARC4-BN05 collected from the Canada Basin, Arctic Ocean, covers the late to middle Quaternary (Marine Isotope Stage -MIS -1-15, ca. 0.5-0.6 Ma) as estimated by correlation to earlier proposed Arctic Ocean stratigraphies and AMS 14 C dating of the youngest sediments. Detailed examination of clay and bulk mineralogy along with grain size, content of Ca and Mn, and planktic foraminiferal numbers in core ARC4-BN05 provides important new information about sedimentary environments and provenance. We use increased contents of coarse debris as an indicator of glacier collapse events at the margins of the western Arctic Ocean, and identify the provenance of these events from mineralogical composition. Notably, peaks of dolomite debris, including large dropstones, track the Laurentide Ice Sheet (LIS) discharge events to the Arctic Ocean. Major LIS inputs occurred during the stratigraphic intervals estimated as MIS 3, intra-MIS 5 and 7 events, MIS 8, and MIS 10. Inputs from the East Siberian Ice Sheet (ESIS) are inferred from peaks of smectite, kaolinite, and chlorite associated with coarse sediment. Major ESIS sedimentary events occurred in the intervals estimated as MIS 4, MIS 6 and MIS 12. Differences in LIS vs. ESIS inputs can be explained by ice-sheet configurations at different sea levels, sediment delivery mechanisms (iceberg rafting, suspension plumes, and debris flows), and surface circulation. A longterm change in the pattern of sediment inputs, with an apparent step change near the estimated MIS 7-8 boundary (ca. 0.25 Ma), presumably indicates an overall glacial expan-sion at the western Arctic margins, especially in North America.

show abstract

Section: Ams 14 C Datingmentioning

confidence: 99%

Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history

et al. 2017

View full text Add to dashboard Cite

show abstract

“…These samples contain not only foraminiferal shells but also, judging from the somewhat lighter carbon and oxygen isotope composition, an insignificant admixture of terrige nous carbonates. The presence of the latters as carbonate fragments in the ice rafted material in the sediments of the brown horizons, including the Holocene one, was established in several cores from the Chukchi Basin [30,33,34]. Their sources were presumably Paleozoic carbonate sequences from the Alaskan and Vrangel Island coasts.…”

Section: Lithostratigraphy and Composition Of The Sedimentsmentioning

confidence: 74%

“…They have a total carbonate content of up to 45%; the carbonates are represented by microcrystalline calcite and dolomite. Similar but thinner interlayers are known in the sediments of all the uplifts of the Amer asian Basin of the Arctic Ocean [28,30,34] and are usually defined as detrital carbonates transferred by glaciers of the Canadian archipelago and then by ice bergs. In some cases, these interlayers are considered as stratigraphic references [28] and distinguished by the Ca content in the sediments.…”

Section: Discussionmentioning

confidence: 90%

“…The alternation of oxic and anoxic conditions at that time was noted over the entire deep water portion of the Amerasian basin of the Arctic Sea [24,28,30,34], but the H 2 S (euxinic) settings were not mentioned previ ously. It is conceivable that the deep anoxic setting was local and formed in the pockmark basin during its deepening owing to the limited water exchange or influx of endogenic anoxic waters.…”

Section: Discussionmentioning

confidence: 99%

“…This is expressed in the distinctive enrichment of the sediments, which were accumu lated during relatively warm interglacial periods and became rich in biogenic carbonates (foraminifers) and, respectively, in Ca, Mg, Sr, Mn, and many trace elements in ice rafted material and their depletion in organic carbon. These deposits are usually brown and strongly bioturbated, unlike the intervening gray or yellow gray sediments [24,34]. In addition, the sedi ments accumulated during relatively warm periods contain horizons enriched in detrital carbonates, which, according to many researchers [24,28,33], is related to the iceberg transfer of detrital material from the Canadian archipelago.…”

Section: Lithostratigraphy and Composition Of The Sedimentsmentioning

confidence: 99%

See 2 more Smart Citations

Possible conditions and the formation time of the Chukchi Plateau pockmarks

et al. 2014

Self Cite

View full text Add to dashboard Cite

The study of the bottom sediments accumulated during the last 60-65 ka in the pockmark craters of the Chukchi Plateau in the Arctic Ocean showed that their composition and lithostratigraphy in general are similar to those of the background areas. A specific feature is the presence of sedimentary interlayers and horizons with signs of gravitational stirring, carbonate mineralization, and accumulation under H 2 S contam ination conditions. The micropaleontological remains found in the pockmark sediments accumulated during the glacial periods are represented by redeposited species from Paleozoic, Mesozoic, and Cenozoic deposits, which are locally exposed in the pockmark walls. It was concluded that the pockmarks were formed under the influence of pulsed fluid flows. The present day topography of the pockmarks was formed at the last stage of active defluidization (35-20 ka ago).

show abstract

Ice rafting history and paleoceanographic reconstructions of Core 08P23 from southern Chukchi Plateau, western Arctic Ocean since Marine Isotope Stage 3

et al. 2015

View full text Add to dashboard Cite

Late Quaternary paleoenvironmental changes revealed by multi-proxy records from the Chukchi Abyssal Plain, western Arctic Ocean

Cited by 31 publications

References 126 publications

Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history

Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history

Possible conditions and the formation time of the Chukchi Plateau pockmarks

Ice rafting history and paleoceanographic reconstructions of Core 08P23 from southern Chukchi Plateau, western Arctic Ocean since Marine Isotope Stage 3

Contact Info

Product

Resources

About