Biostratigraphy of the Akiyoshi Limestone Group,

More documents

Recommendations

Info

Yasuhiro Ota Table 1. Correlation of the Carboniferous and Permian boundary among the main pro vinces (after Rauser and Shcheoolev, 1979). Russian Platform &Ural Camlc Alps USA W.Texas New Mexfoo Kuma Zone Formation Zone si 1 m Hi nil ft l! C3 ii 6. The Carboniferous-Permian boundary is at the boundary between the Artinskian and Sakmarian (Table 2). In USA Beede and Kniker (1924) considered that "Schwagerina" was a good index fossil and its earliest occurrence mightbe safely regarded as revealing the basal part of the Permian. They proposed that "the zone of Schwagerina" (=Pseudo schwagerina of modern usage) should be recognized as the base of the Permian. Ac cording to the Permian Subcommittee of the National Research Council's Committee on Stratigraphy (Dunbar, Chairman) (1960), the U.S. Geological Survey officially recognized the Permian as a system in 1941. But it was uncertain until 1951 wheth er the Wolfcampian Series was "Permian". It is common that American geologists usually put the base of the Pseudoschwagerina Zone as the base of the Permian. They
Fusulinacean Biostratigraphy of the Akiyoshi Limestone Group, Part I Table 2. Different levels proposed for theCarboniferous-Permian boundary in Russia (after Rui and Zhang, 1987). Official Carboniferous - Permian boundary in Russia (Russian Platformand Ural) Horizon Zone Rybakov. 1962 Lurryak. 1962 Lever), 1986 Barkhatova, 1970 Raiser. 1960 RertOnger. 1969: Koar. 1884 Movsrtovich. 1S66 Ruzherchev and Sarycheva, 196S Irgjn Burtsyev Parafusulinalutugtni Pseudofusulina ccncavutas Permian Styertttamak Pseudofusulina urdalensis Pseudofusulina vemeuSi • Psf. uraBca Pseudofusulina moeBeri £ Psf. moeBeriZ. Schwagerina sphaerica - Pseudofusulina firma Nenet Horizon Carboniferous Sokotiegor Schwagerina moelleri• Pseudofusulina fecunda Schwagerina vulgaris • SfusHbrmis S. vulgaris. S. fusttcnnlsZ. Dah&ia bosbyt&uoftsls D. robust* Z Carboniferous Carboniferous Daixina sokensis Daixina sokensisZ. JiguHtespgulensis Carboniferous have the opinion that the base of the Permian in the U.S. is essentially equivalent to the same horizon of the Russia (Fig. 2). Ross (1984) summarized Carbonifer ous-Permian fusulinaceans of North America and concluded that the base of the Asselian in the Russian type locality, namely, the base of the zone with large, inflated schwagerinids, was presently widely recognized as the base of the lowest Permian faunal zone by many invertebrate paleontologists in North America, Japan and south ern Europe. Wilde (1984) also published on the Carboniferous-Permian boundary and he discussed this problem from the viewpoint of fusulinacean taxonomy. He also remarked that the Carboniferous-Permian boundary had been drawn at the base of the Asselian Stage in Russia. In addition, he recognized the boundary as equiva lent to the middle Wolfcampian unconformity, identified in the type section of the Wolfcampian in the United States (Figs. 3, 4). In China, Rui and Zhang (1987) reviewed the current situations of the Car boniferous-Permian boundary. According to them, before 1970, Chinese workers traditionally regarded the top of the Pseudoschwagerina Zone in the Maping (Chuanshan) Formation as the upper most of the Carboniferous, and the lower part of the Chihsia Formation, namely, the Schwagerina tschernyschewi Zone or the Misellina Subzone ofthe Parafusulina Zone as the lower most ofthe Permian. In 1981, Rui Lin found the "Carboniferous" (traditional Chinese sense)-Permian mixed fusulinacean
Page 1 and 2: Bull. Kitakyusku Mus. Nat. Hist., 1
Page 3 and 4: Fusulinacean Biostratigraphy of the
Page 7: Fusulinacean Biostratigraphy of the
Page 11 and 12: Fig. 3. Correlation of Carboniferou
Page 15 and 16: South Ural Zone Paralusulina Parafu
Page 21 and 22: Fig. 10. The first investigated are
Page 28 and 29: d5' &\p •^1 ftrcniffna cf* ih&oJt
Page 30 and 31: . . . Fusulinacean Biostratigraphy
Page 34 and 35: Fig. 15. Distribution of fusulinace
Page 48 and 49: Fusulinacean Biostradgraphy of the
Page 58 and 59:
Fusulinacean Biostratigraphyof the
Page 60 and 61:
Fusulinacean Biostratigraphy of the
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Fusulinacean Biostratigraphyof the
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99:
show all

Biostratigraphy of the Akiyoshi Limestone Group,

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?