Wuchang Wei; Beijing inundated by the sea within the past 80 k.y.: Nannofossil evidence. Geology ; 30 (4): 379–381. doi: https://doi.org/10.1130/0091-7613(2002)030<0379:BIBTSW>2.0.CO;2
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Examination of published data reveals that a marine bed in Beijing can be dated as 80 ka or younger on the basis of abundant nannofossils. This age is ∼30 times younger than that published previously on the basis of magnetostratigraphic and biostratigraphic interpretations. The abundant nannofossils and foraminifers suggest that Beijing was inundated by the sea within the past 80 k.y. The very recent nature of this marine transgression has profound societal and geological implications and thus calls for new studies and thorough evaluation of all relevant data sets.