安徽省淮北平原第四纪孢粉序列

QUATERNARY PALYNOLOGICAL SEQUENCE IN HUAIBEI PLAIN, ANHUI PROVINCE

木文根据淮北平原多年来积累的孢粉资料,通过区域地层对比,2.5Ma以来共划分10个孢粉组合,为重建本区古气候提供了重要依据。

Based on sporopollen assemblages during the past 2.5 Ma in this area, 10 sporopollen zones, 4 subzones and 13 vegetation types can be established frombottom to top as follows: Zone I: Pinus, Artemisia, Ulmus, Quercus, Picea. It is from Taoyuan Fin. and 0.9 to 2.5 Ma in age. Zone II: Artemisia, Gramineae, Polypodiaceae, Pinus, Compositae, Chenopod-iaceae. It is from the lower member of Panji Fm., 0.7 to 0.9 Ma in age. Zone III: Gramineae, Pinus, Artemisia, Quercus, Chenopodiaceae, Carpinus. It is from the middle member of Panji Fm., 0.45 to 0.7 Ma in age. Zone IV: Artemisia, Gramineae, Chenpopdiaceae, Pinus, Quercus. It is from the upper member of Panji Fm. and 0.3 to 0.45 Ma in age. Zone V: Artemisia, Picea, Chenopodiaceae, Gramineae, Pinus, Abies. It is from the top of the upper member of Panji Fm. (absent in some places) and 0.25 to 0.3 Ma in age. Zone VI: Artemisia, Pinus, Gramineae, Picea, Beiula, Quercus, Carpinus. It is from the lower part oi the lower member of Maotang Fm., 0.13 to 0.25 Ma in age. Zone VII: Artemisia, Pinus, Ulmus, Gramineae, Spargunium, Cyperaceae, Quercus, Typha. It is from the upper part of the lower member of Maotang Fm. and 0.10 to 0.13 Ma in age. Zone VIII: Artemisia, Pinus, Picea, Ulmus, Quercus, Gramineae. It is from the lower part of the upper member of Maotang Fm. and 0.07 to 0.10 Ma in age. Zone IX: Artemisi'a, Pinus, Chenopodiaceae, Hicripteris, Selaginella, Ulmus It is from the middle part of the upper member of Maotang Fm., 0.03 to 0.07 Ma in age. Zone X: It is from Bengbu Fm. and includes 4 subzones: Subzone X-l: Artemisia, Chenopodiaceae, Pinus, Pteridaceae, Selaginellaceae- Subzone X-2: Artemisia, Chenopodiaceae, Pinus, Pteridaceae, Castanea, Quercus. Subzone X-3: Artemisia, Chenopodiaceae, Pinus, Pteridaceae, Lycopodiaceae. Selaginellaceae. Subzone X-4: Ariemisia, Chenopodiaceae, Pteridaceae, Pinus, Castanea, Gra, mineae, Quercus. Corresponding to Subarctic-Boreal phase, Atlantic phase, Subboreal phase and Subatlantic phase on A. Blytt and R. Sernadar's suggestion, the subzones X-l, X-2, X-3 and X-4 have their ages of lower limit at about 12Ka, 5.5Ka and 2.5Ka respectively.