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本文应用孢粉分析,对北京地区两个泥炭矿的时代和形成环境进行了探讨。指出:泥炭成矿时期的气候是温暖而湿润的,气温较现今高。植物生长茂盛,属针阔叶林植被。泥炭是在植物残体的不断积累、分解和腐烂,长期保存在水体及后期泥砂覆盖的还原环境之下,上覆压力不断增加,沉积物的堆积速度与湖沼下降的速度长期保持相对平衡等条件下形成的。泥炭成矿的地质时代主要在中全新世。
In this paper, pollen analysis was used to investigate the age and formation environment of two peat mines in Beijing. Pointed out: the peat mineralization period is warm and humid climate, the temperature is higher than today. Lush plant growth, is a coniferous and deciduous forest vegetation. Peat is accumulating, decomposing and decaying continuously in the plant residues. It is preserved for a long time under the reducing environment covered by water bodies and later mudslides. The overburden pressure is increasing continuously, and the deposition rate of sediments is relatively balanced with the decreasing speed of lakes. Formed under The geologic age of peat mineralization is mainly in the middle Holocene.