Evolutionary paleontologic, stratigraphic, and geochemical studies on the Cretaceous environmental changes.

白垩纪环境变化的演化古生物学、地层学和地球化学研究。

• 批准号: 15340178
• 负责人: HIRANO Hiromichi
• 金额: $ 5.44万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15340178/
• 关键词: Biostratigraphy; Carbon isotope stratigraphy; Sequence stratigraphy; International Correlation; Environmental changes; 白亜紀; 海洋無酸素事変; 微化石層序; 堆積相解析

(1)We studied the stratigraphic transition of major and minor elements in terms of some statistical methods from the Sorachi to the Yezo Group as well as of radiolarian abundance and specific compositions. in Teshionakagawa area, Hokkaido. We clarified that the chemical transition is much different from the clear visual change in the succession between the upper Sorachi and the lower Yezo Groups.(2)We made a joint work on the same sections of the upper Cretaceous in Nakatonbetsu area, Hokkaido from the viewpoints of biostratigraphy by using ammonoids, inoceramids, planktonic foraminifers, sequence stratigraphy, and stable carbon isotope stratigraphy. We detected a significant spike of carbon isotope fluctuation at the same stratigraphic horizon of the extinction of inoceramid bivalves. This result enable us to make a high resolution international correlation.(3)We made a joint research on the Jixi Group in NE China of the provenance of the Yezo forearcc basin from the viewpoints of biostratigraphy of marine bivalves, pollen, stable carbon isotope stratigraphy and sequence stratigraphy. We obtained a high resolution correlation of the group with the Japanese Pacific, and European sections.

（1）我们研究了从索拉奇到Yezo组的某些统计方法以及放射虫的丰度和特定组成的一些统计方法的地层和次要元素的地层过渡。在北海道的Teshionakagawa地区。我们澄清说，化学过渡与上索拉奇和下部耶佐族人之间的连续性明显的视觉变化大不相同。（2）我们在纳卡顿贝图斯地区的上层白垩纪相同部分上进行了共同的工作，北海道，北海道，从使用生物学的观点，通过使用ammonoids，inoceraids，inoceraigs and planktonics，inocerys，inoceriys and planktonics and planktonics and planktonics and planktonics and planktonics and，碳同位素地层学。我们在同一地层​​上的灭绝菌菌双壳类动物的同一地层上检测到了碳同位素波动的显着尖峰。这一结果使我们能够建立高分辨率的国际相关性。（3）我们从中国NE的Jixi集团进行了联合研究，从海洋前期盆地的出处，从海洋双壳类，花粉，稳定的碳同位素层地层和序列地层的生物地层学的角度来看。我们获得了该群体与日本太平洋和欧洲部分的高分辨率相关性。

项目成果

地質学用語集--和英・英和-

地质术语--日-英/英-日-

• 发表时间: 2004
• 作者: Ueda;Y.;Jenkins;R.G.;Ando;H.;Yokoyama;Y.;平野弘道;坂 幸恭;平野弘道;平野弘道
• 通讯作者: 平野弘道

Early Cretaceous carbon isotopic and marine environmental changes in northern Oyubari area, Hokkaido.

北海道大夕张北部地区早白垩世碳同位素与海洋环境变化.

• 发表时间: 2003
• 期刊: Fossils, Palaeontological Society of Japan 74
• 作者: Takahashi;K.;Hirano;H.
• 通讯作者: H.

Early Cenozoic extreme climates : The Walvis Ridge Transect.

早新生代极端气候：沃尔维斯海岭断面。

• 发表时间: 2004
• 期刊: Proceedings of the Ocean Drilling Program, Leg 208 Initial report (2004).
• 作者: Hasegawa;Takashi;24 shipboar members
• 通讯作者: 24 shipboar members

Cretaceous terrestrial paleoenvironments of northeastern Asia suggested from carbon isotope stratigraphy : Increased atmospheric pCO2-induced climate.

碳同位素地层学表明东北亚白垩纪陆地古环境：大气 pCO2 引起的气候增加。

• 发表时间: 2003
• 期刊: Journal of Asia Earth Sciences. 21
• 作者: Hasegawa;Takashi
• 通讯作者: Takashi

First occurrence of Haugia cf. variabilis (d'Orbigny)(Ammonoidea) from the Lower Jurassic of the Uminoura area, western Kyushu, Japan.

Haugia 第一次出现 cf.

• 发表时间: 2004
• 期刊: Paleontological Research 8(2)
• 作者: Wani;R.;Ohta;T.;Hirano;H.
• 通讯作者: H.