| 大理地区全新世地层的划分及~(14)C年龄测定 |
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| 引用本文： | 彭贵,麦学舜,李红春,叶永英.大理地区全新世地层的划分及~(14)C年龄测定[J].地震地质,1984,6(1):55. |
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| 作者姓名： | 彭贵 麦学舜 李红春 叶永英 |
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| 作者单位： | 国家地震局地质研究所
(彭贵，麦学舜，李红春)，国家地震局地质研究所(叶永英) |
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| 摘 要： | 本文就云南大理地区全新世地层剖面的~(14)C年代测定和孢粉分析资料说明,点苍山东麓的砂、砾石层的堆积时代是距今8980±90年—6050±90年。洱海沿岸的湖相沉积物的沉积时代是距今8465±115—25604±75年。洱源地区距地表埋深15米的泥炭层的~(14)C年代为距今11650±135年。该泥炭层可做为全新世底界的标志层。大理地区全新世气候演化是;早全新世温和稍湿;中全新世温暖湿润;晚全新世温和稍干
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HOLOCENE STRATA DIVISION AND RADIOCARBON DATING FOR THE DALI AREA |
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| Abstract: | The strata of the Holocene, which was divided on the basis of radiocarbon datings and sporo-pollen analysis, indicate that the Holocene strata in Dali area can be found mainly along the Erhai lake and surroundings of Xi lake and Cibi lake, as well as the piedmont belt. The Holocene sediments are of diluvial and river-lacustraine origin.The Holocene boundary is marked by a layer of lacustraine sediments consisting: of peat or its similar and is about 15 meters at a depth beneath the Eryuan region. And the sandy gravel and gravel distributed on the eastern slop of Mt. Diancangshan can be ascribed to the Early-Middle Holocene |
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