临朐中新世山旺组孢粉植物群和古气候研究  

Palynoflora and Paleoclimate of Miocene Shanwang Formation in Linqu

作　　者：赵秀丽[1] 王明镇[1] 宋香锁 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266510 [2]山东省地质科学实验研究院,山东济南250013

出　　处：《山东科技大学学报（自然科学版）》2010年第3期1-8,共8页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：山东省高校沉积成矿作用与沉积矿产重点实验室(山东科技大学)开放课题(DMSM200805)

摘　　要：为恢复山旺中新世古植被和古气侯,采集了临朐山旺组孢粉样品28块,利用重液浮选法分析出大量孢粉化石,鉴定出120个孢粉类型,归属于77属,40科,其中蕨类植物占3%左右,裸子植物占5%～27%,被子植物占70%～92%。根据孢粉类型和孢粉含量的变化自下而上建立了两个组合:组合ⅠUl mipollenites-Caryapollenites-Fupingopollenites和组合ⅡUl mipollenites-Quercuspollenites。运用共存因子分析法定量化重建了山旺古气候参数,得出7个古气候参数分别为年均温13.3～22.1℃,最热月均温22.5～27.5℃,最冷月均温1.9～15.1℃,年较差11.4～26℃,年降雨量618.9～1 254.7 mm,最大月降雨量172.4～249.6 mm,最小月降雨量7.1～18.5 mm。In order to reconstruction the paleovegetation and paleoclimate of Miocene in Shanwang,28 pollen samples were collected from Shanwang formation in Linqu,great amount of spora and pollen fossils were got by using the method of heavy liquid flotation. There were 120 palynomorphs belonging to 77 genus and 40 families,among which the pteridophytes accounted for 3%, gymnosperms accounted for 5% ～27%, angiosperms accounted for 70%～ 92 %. According to the change of types and contents of sporo-pollen, two assemblages were established from lower to upper：one was Ulmipollenites-Caryapollenites-Fupingopollenites assemblage, the other was Ulmipollenites-Quercuspollenites assemblage. Seven paleoclimatic parameters were reconstructed for Shanwang area by the method of the coexistence factor analysis. The parameters were MAT（13.3～22.1 ℃） ,WMT（22.5～27. 5 ℃） ,CMT（1.9～15.1 ℃）,DT（11.4～26 ℃）,MAP（618.9～1 254. 7 mm）,MMaP（172.4～249.6 mm）,MmiP （7. 1～18. 5 mm）.

关 键 词：孢粉植物群 古气候 山旺组 中新世 临朐 

分 类 号：Q913[天文地球—古生物学与地层学]