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通过湖光岩玛珥湖沉积物高分辨率的Fe/Mn比值、Rb/Sr比值、Sr元素强度和550℃烧失量的研究,重建了湖光岩地区全新世以来的古环境演化历史,即:早全新世是气候适宜期,气候温暖湿润,中、晚全新世开始气候逐渐干旱化。这种气候演化模式体现了全新世季风演化的全球性。湖光岩玛珥湖沉积物反映的全新世以来的冷暖变化事件与北大西洋浮冰碎屑记录之间既存在联系又存在差异。这说明在全新世背景下,低纬地区的古气候演化与北大西洋存在一定程度的联系。低纬地区全新世古环境演化是低纬过程和高纬作用叠加的结果。
Through the study of the high resolution Fe / Mn ratio, Rb / Sr ratio, Sr elemental intensity and the loss on ignition at 550 ℃ of the Lake Maar sediments, the paleoenvironment evolution history of the Huguangyan area was reconstructed. That is, the Early Holocene is a suitable period of climate, the climate is warm and humid, the Middle and Late Holocene began to gradually dry climate. This climate evolution model reflects the global Holocene monsoon evolution. There are both connections and differences between the warm and cold events since Holocene recorded by the Huguang Lake Maar Lake sediments and the records of North Atlantic ice sheets. This shows that in the Holocene background, the paleoclimate evolution in the low latitudes has some connection with the North Atlantic Ocean. The Holocene paleoenvironmental evolution in the low latitudes is the result of superimposition of low-latitude processes and high latitudes.