黑龙江嘉荫地区白垩纪—第三纪界线初步观察  

Preliminary Study of the Cretaceous-Tertiary Boundary in Jiayin of the Heilongjiang River Area of China

作　　者：孙革[1] 孙春林[1] 董枝明[1] 孙跃武[1] 吕建生[1] 熊宪政[1] 周忠立 余福林 邢玉玲 全成[1] M.A.Akhmetiev A.R.Ashraf E.Bugdaeva D.L.Dilcher L.Golovneva K.Johnson T.Kezina T.Kodrul H.Okada 

机构地区：[1]吉林大学古生物学与地层学研究中心,长春130026 [2]黑龙江省地质博物馆,哈尔滨150036 [3]俄罗斯科学院地质所,莫斯科109017 [4]德国图宾根大学地质古生物学院,图宾根d72076 [5]俄罗斯科学院远东生物土壤研究所,符拉迪沃斯托克690022 [6]美国佛罗里达大学自然史博物馆,根思维尔326117800 [7]俄罗斯科学院植物所,圣彼得堡197376 [8]美国丹佛自然科学博物馆,丹佛co80205 [9]俄罗斯科学院阿穆尔综合研究所,布拉戈维申斯克675000 [10]日本Oyo公司九州分部

出　　处：《世界地质》2003年第1期8-14,共7页World Geology

基　　金：国家自然科学基金国际合作重大项目(30220130698);吉林大学的专项基金对本研究的资助。

摘　　要：本文报道了黑龙江嘉荫白山头地区一条新的地层剖面及其K/T界线的初步研究。新命名的“白山头段”代表乌云组下部的早古新世地层 ,含以Tiliaephyllumtsagajanicum等为代表的达宁早期植物化石。在白山头剖面上 ,作者发现可能为白垩纪末期的凝灰岩。结合与俄罗斯布列亚盆地含K/T界线的查加扬群标准剖面的对比 。A geological section recognized newly in Baishantou of Jiayin,Heilongjiang Province,China,was studied preliminarily in searching for the K/T boundary. An early Paleocene florule characterized by abundant Tiliaephyllum tsagajanicum leaves and its associated plants,was collected from the Baishantou Member (new member representing the lower part of the Paleocene Wuyun Formation) overlying the possible K/T boundary. A tuff bed was found from the upper part of the Furao Formation (uppermost Cretaceous) in this section. The new findings imply that the K/T boundary is probable lying in the interval between the base of the Baishantou Member and the tuff bed,based on the correlation of the present strata with the stratotype of the Tsagajan Group spanning the K/T boundary in 'Belaya Gora' of the Bureya Basin,Russia. The early Paleocene florule from the Baishantou Member and the early-middle Maastrichtian dinosaurs found from the Yuliangzi Formation underlying the Furao Formation suggest that the Baishantou section is more promising for searching for the K/T boundary in this area.

关 键 词：K/T界线 早古新世 白山头段 黑龙江嘉荫 

分 类 号：P534.61[天文地球—古生物学与地层学]