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Earth, Planets and Space
Fig. 3. | Earth, Planets and Space

Fig. 3.

From: Environmental magnetic record of the fluvial sediments from the Tianzhu borehole in Beijing for the last 800 ka

Fig. 3.

Inclination, the geomagnetic polarity scale, and sedimentary lithology of the Tianzhu borehole and a comparison of rock magnetic parameters (NRM, SIRM, S−300, HIRM, and k) for the Tianzhu borehole and oxygen isotope data from ODP 677 (Shackleton et al., 1990). The legends of main lithology are listed at the bottom of the figure. The Tianzhu sequence includes two geomagnetic excursion events (Blake and Calabrian Ridge 0). Two arrows indicate two extreme events at 750–720 ka and 270–250 ka, respectively.

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