Magnetostratigraphic dating of loess deposits in china


05-Sep-2019 18:59

The overlying Ili Fm roughly resembles the underlying Kokterek Fm but with more organic rich horizons (Bodina, 1961; Voigt et al., 2017). Late Cenozoic central Asian drying inferred from a palynological record from the northern Tian Shan.

Biostratigraphic data provide a low resolution temporal framework that is useful as age marker for magnetostratigraphic dating of the Aktau Mountains (Figure 2C). doi: 10.1016/j.jseaes.20 Cross Ref Full Text | Google Scholar Tang, Z., Ding, Z., White, P.

Detailed rock magnetic analyses are used to analyze the nature of the characteristic remanent magnetization and to discriminate primary and secondary remanence directions in order to obtain a reliable magnetostratigraphic result.

The proposed age of 15.3–13.9 Ma for the Bastau Formation corresponds to the known biostratigraphic setting, matches with typical sedimentation rates of foreland basins in Central Asia, and coincides with spectral analysis of geochemical proxies of that section.

They result from an asymmetrical anticline with a gently dipping northern flank mainly comprising lake deposits and mudflats. Properties of a detrital remanence carried by haematite from study of modern river deposits and laboratory redeposition experiments.

Bedding is fairly constant throughout the section with an average dip direction of 314° and dip angle of 10°. doi: 10.1029/2011GC003966 Cross Ref Full Text | Google Scholar Tauxe, L., and Kent, D.

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Fold tests and reversal tests can yield important information about the timing of remanence acquisition and possible remagnetization processes. A robust age model that allows detailed correlation to trans-regional and global tectonic and climatic processes during the Neogene is fundamental for paleoclimatic interpretation of the proxy record.