Nannofossil datums and occurrence of microspherules in Upper Eocene sediments of the lower latitudes (Table 1), supplement to: Wei, Wuchang (1995): How many impact-generated microspherule layers in the Upper Eocene? Palaeogeography, Palaeoclimatology, Palaeoecology, 114(1), 101-110

Wuchang Wei
Upper Eocene microspherules (microtektites and microkrystites) have been found in deep-sea sediments from the western North Atlantic, Caribbean, Gulf of Mexico, equatorial Pacific, and eastern equatorial Indian Ocean. Recent studies proposed that there are three or four microspherule layers: the North American microtektite and microkrystite couplet in chron C15, and one (or two) significantly older layer(s) in chron C16 in DSDP Sites 216, 292 and 612. Based on calcareous nannofossil biochronologic and morphometric data, I...
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