CRETACEOUS IN SAKHALIN AND CRETACEOUS EVENTS IN N.PACIFIC

萨哈林岛的白垩纪和北太平洋的白垩纪事件

• 批准号: 05041068
• 负责人: KASE Tomoki
• 金额: $ 10.24万
• 依托单位: NATIONAL SCIENCE MUSEUM
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05041068/
• 关键词: Paleontology; Paleomagnetics; Cretaceous; Ammonite; K-T boundary; C-T boundary; Sakhalin; Biostratigraphy; 生層序; 古地理

The Cretaceous System in the Naiba, Sinegorsk, Ai, Pugachevo and Makarov area of southern Sakhalin, Russia has been investigated from a viewpoint of paleontology, biostratigraphy and paleomagnetics in connection with the Cenomanian-Turonian marine anoxic event and the Cretaceous terminal mass extinction event.1. The Cretaceous in the Naiba area ranges continuously from the Albian to Maestrichtian in age, and is devided into four stratigraphic units. Well-stratiphied, fossil-less, dark-colored mudstone of the upper part of the Ai Formation and the lower half of the Naiba Formation (Albian to Turonian age) appears to have deposited under marine anoxic events. Upper part of the Bykov Formation includes ammonites and inoceramids abundantly and can be assinged to Santonian age. Krasnoyarka Formation ranges from Campanian to Maestrichtian, within which three characteristic ammonite assemblages have been recognized. The Canadoceras multicostatum assemblage (upper Campanian) and the Zelandites … More varuna assemblage (Maestrichtian) ares in common with those found in the contemporaneous strata of the Soya area, Wakkanai and the Awaji area, respectively. There is some possibility to exist Danian strata in the upper part (200 to 300 meters thick) of the Krasnoyarka Formation in the Naiba and Sinegorsk areas, but we have yet get any reliable fossil evidence. If this is so, however, there is no characteristic geologic phenomena in the Naiba area that suggest the Cretaceous terminal event.2. The Cretaceous succession in the Makarov area ranges from Santonian to Maestrichtian in age. We have recognized four fossil assemblages (Anapachydiscus sutneri Ass. , A.naumani-Inoceramus orientale Ass. , Eupachydiscus haradai-I.schmidti Ass. , Canadoceras kossmati Ass.) in the Bykov Formation and three fossil assemblages (C.multicostatum -Saghalinites teshioensis Ass. , Gaudryceras tombetsense-Pseudophyllites indra-Inoceramus hetonaianus Ass. , Pachydiscus cf. flexuosus-Gaudryceras sp. Ass.)in the Krasnoyarka Formation. We can not detect the Cretaceous-Tertiary boundary in this area. Less

从古生物学、生物地层学和古地磁学的角度对俄罗斯萨哈林南部奈巴、锡内戈尔斯克、艾伊、普加切沃和马卡洛夫地区的白垩纪系统进行了研究，并与新生代-都罗尼亚海洋缺氧事件和白垩纪末期大灭绝事件有关。奈巴地区白垩纪的时代从阿尔比期一直延续到麦斯特里赫期，共划分出4个地层单位。艾组上部和乃巴组下半部(阿尔比亚-吐鲁尼亚时代)的层状良好、化石较少的深色泥岩似乎是在海相缺氧事件下沉积的。别科夫组上部含有丰富的菊石和硝胺类化合物，可确定为桑托期。克拉斯诺亚尔卡组分布于坎帕尼亚-梅斯特里赫期，其中识别出三种特征的菊石组合。Canadocera多中肋骨组合(上坎帕尼亚)和Zelandites…更多的瓦鲁纳组合(Maestrahtian)分别与大豆地区、Wakkanai和Awaji地区的同时代地层中发现的相同。在奈巴和锡内戈尔斯克地区克拉斯诺亚尔卡组上部(厚200-300米)存在一定的大年地层，但我们还没有得到任何可靠的化石证据。然而，如果是这样的话，奈巴地区没有特征的地质现象表明白垩纪末期事件。马卡洛夫地区白垩纪层序的时代范围为桑托纪至梅斯特里赫期。我们发现了四个化石组合(Anapachydisus sutneri Ass.、诺曼曲霉A.Naumani-Inocerus Orientale Ass.、哈拉代Eupachydisus haradai-I.schmidti Ass.，Canadocera kossmati Ass.)在别科夫组和三个化石组合(多肋骨化石-Saghalinites teshioensis Ass.)、Gaudryceras tombetense-Pseudophyllites Indra-Inocerus hetonaianus Ass.，Pachydisus cf.Flexuosus-Gaudryceras sp.驴)在克拉斯诺亚尔卡组。在本区未发现白垩系-第三系界线。较少

项目成果

Shigeta,Y.: "The genus Gabbioceras(Ammonoidea,Gaudryceratidae)in the Upper Cretaceous of Japan" (発表予定).

Shigeta, Y.：“日本上白垩纪的 Gabbioceras（Ammonoidea，Gaudryceratidae）”（待提交）。

TOMOKI KASE: "LIMPET HOME DEPRESSIONS IN CRETACEOUS AMMONITES" LETHAIA. 27. 49-58 (1994)

加濑智树：“白垩纪菊石中的贝母洼地”莱萨亚。

加瀬友喜: "New species of Patellogastropoda(Mollusca)from the Cretaceous of Hokkaido,Japan and Sakhalin,Russia." Jour.Paleont.(予定).

Yuki Kase：“来自日本北海道和俄罗斯库页岛白垩纪的软体动物新种。Jour.Paleont。（计划中）。”

Kase,T.: "Limpet home depressions in Cretaceous ammonites" Lethaia. 27. 49-58 (1994)

Kase,T.：“白垩纪菊石中的贝母凹陷”Lethaia。

二上政夫: "東アジアにおける白亜紀の古生物地理" 月刊地球. (印刷中).

Masao Nigami：“东亚白垩纪古生物地理学”月刊地球（正在出版）。