![]() However, the mean ring-widths of these forests were significantly smaller than that reported for mid-Cretaceous High Arctic fossil forest. Consideration of all features suggests that there was no significant difference in climate of middle Paleocene and late Early Eocene time in the High Arctic. We found little significant difference in the mean sensitivity and power spectrum between the forests, neither did we find any strong indication of periodicities. On Ellesmere Island in the Arctic one fossil forest consists of a nearly hundred large stumps scattered on an exposed coal bed. Although significant difference in the mean ring width between the two forests was found, a comparison with living trees suggests that the difference can be attributed to the specific difference between the forests, so that a significant climate change may not necessarily be invoked. Mean ring width, mean sensitivity and power spectrum were calculated for ring-width sequences. ![]() ![]() Glyptostrobus, suggesting that these forests grew in similar environments of warm to cool temperate climates. The woods consist most abundantly of Metasequoia and cf. We analyzed the growth rings of petrified woods from two fossil forest sites (one in middle Paleocene, and the other in late Early Eocene) to extract information on climate change. ![]() These fossil forests are obvious evidence for Early Tertiary climate much warmer than that of today. Fossil forests, where petrified stumps were preserved in growth position, have been found within Early Tertiary sediments near Strathcona Fiord, Ellesmere Island, Canadian Arctic Archipelago. ![]()
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