摘要
腾冲县位于云南省西部。境内硅藻土矿（层）共划分了五个孢粉组合带：单缝孢－（松、铁杉、云杉粉）－栎粉（栗、桤木、桦粉）孢粉组合带（Ⅰ）。时代：上新世。单缝孢－松科－栎孢粉组合带（Ⅱ）。时代：早更新世早期。松科－栎－禾本科、蒿孢粉组合带（Ⅲ）。时代：中更新世。单缝孢－松科－栎－禾本科、莎草科孢粉组合带（Ⅳ）。时代：晚更新世。单缝孢－栎、桤木－莎草科、禾本科（含羞草）孢粉组合带（Ⅴ）。时代：全新世。
Tengchong County is in the west of Yunnan Province. According to the change of the elements, the diatomaceous bed in Tengchong can be divided into 5 palynological assemblage zones as follows. Ⅰ) Monoletes-Pinus,Tsuga, Picea-Quercus, Castanea, Alnus, Betula assemblage zone, Pliocene; Ⅱ ) Monoletes-Pinaceae-Quercus assemblage zone,early Pleistocene ; Ⅲ) Pinaceae-Quercus-Gramineae, Artemisia assemblage zone , middle Pleistocene; Ⅳ) Monoletes-Pinaceae-Quercus-Gramineae, Cyperaceae assemblage zone , late Pleistocene :Ⅴ) Monoletes-Quercus, Alnus-Cyperaceae, Gramineae,Mimosa assemblage zone, Holocene.
出处
《云南地质》
1994年第3期312-323,共12页
Yunnan Geology
