scholarly journals Carbon isotope stratigraphy of terrestrial organic matter for the Turonian (Upper Cretaceous) in northern Japan: Implications for ocean-atmosphere  13C trends during the mid-Cretaceous climatic optimum

Geosphere ◽  
2013 ◽  
Vol 9 (2) ◽  
pp. 355-366 ◽  
Author(s):  
G.-I. Uramoto ◽  
R. Tahara ◽  
T. Sekiya ◽  
H. Hirano
Keyword(s):  
Organic Matter ◽  
Carbon Isotope ◽  
Upper Cretaceous ◽  
Terrestrial Organic Matter ◽  
Carbon Isotope Stratigraphy ◽  
Ocean Atmosphere ◽  
Isotope Stratigraphy ◽  
Climatic Optimum ◽  
Northern Japan

A revised inoceramid biozonation for the Upper Cretaceous based on high-resolution carbon isotope stratigraphy in northwestern Hokkaido, Japan

2013 ◽  
Vol 63 (2) ◽  
pp. 239-263 ◽  
Author(s):  
Tatsuya Hayakawa ◽  
Hiromichi Hirano
Keyword(s):  
High Resolution ◽  
Carbon Isotope ◽  
North Pacific ◽  
Upper Cretaceous ◽  
Northwest Pacific ◽  
Terrestrial Organic Matter ◽  
Carbon Isotope Stratigraphy ◽  
The North ◽  
Isotope Stratigraphy ◽  
The North Pacific

Abstract Hayakawa, T., Hirano, H. 2013. A revised inoceramid biozonation for the Upper Cretaceous based on high-resolution carbon isotope stratigraphy in northwestern Hokkaido, Japan. Acta Geologica Polonica, 63 (2), 239-263. Warszawa. Biostratigraphic correlations of inoceramid bivalves between the North Pacific and Euramerican provinces have been difficult because the inoceramid biostratigraphy of the Japanese strata has been based on endemic species of the northwest Pacific. In this study, carbon stable isotope fluctuations of terrestrial organic matter are assembled for the Upper Cretaceous Yezo Group in the Haboro and Obira areas, Hokkaido, Japan, in order to revise the chronology of the inoceramid biozonation in Japan. The carbon isotope curves are correlated with those of marine carbonates in English and German sections with the aid of age-diagnostic taxa. According to the correlations of the carbon isotope curves, 11 isotope events are recognised in the sections studied. As a result of these correlations, the chronology of the inoceramid biozones of the Northwest Pacific has been considerably revised. The revised inoceramid biozones suggest that the timing of the origination and extinction of the inoceramids in the North Pacific biotic province is different from the stage/substage boundaries defined by inoceramids, as used in Europe and North America.

scholarly journals Carbon isotope stratigraphy and depositional oxia through Cenomanian/Turonian boundary sequences (Upper Cretaceous) in New Zealand

2013 ◽  
Vol 40 ◽  
pp. 61-80 ◽  
Author(s):  
Takashi Hasegawa ◽  
James S. Crampton ◽  
Poul Schiøler ◽  
Brad Field ◽  
Keisuke Fukushi ◽  
...  
Keyword(s):  
New Zealand ◽  
Carbon Isotope ◽  
Upper Cretaceous ◽  
Carbon Isotope Stratigraphy ◽  
Isotope Stratigraphy

Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada

2018 ◽  
Vol 130 (9-10) ◽  
pp. 1540-1561 ◽  
Author(s):  
Marissa A. Davies ◽  
Claudia J. Schröder-Adams ◽  
Jens O. Herrle ◽  
Peter Hülse ◽  
Simon Schneider ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Upper Cretaceous ◽  
High Arctic ◽  
Carbon Isotope Stratigraphy ◽  
Sverdrup Basin ◽  
Isotope Stratigraphy
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