radiolaria - Marum

Bibliography - 1992 Radiolaria 14
predominance of spumellarian individuals. This trend in composition
was similar to those of the bathyal assemblages of Empson-Morin
(1984). The Fisher α index (Fisher et al., 1943), the Morishita's, β
index (Morishita, 1967), and the MacArthur model (Shimoyama,
1989) were used to measure the diversity of radiolarian
assemblages. The β was better than the α in the quantitative
analysis of radiolarian assemblages. Each assemblage from the
Futakawa Formation was commonly dominated by only a few species
of spongy or sieve plate spumellarians which comprised about 80%
of the total number of individuals.
Yamaoka, Y. 1992. Meso - Paleozoic complex in northern
part of Tsuyama City, Okayama Prefecture, Japan. Geol. Rep.
Shimane Univ., 11, 77-86. (in Japanese)
Yamashita, M., Ishida, K. & Ishiga, H. 1992.
Palaeofusulina sinensis age for late Permian Neoalbaillella
ornithoformis radiolarian zone, southwest Japan. J. geol.
Soc. Japan, 98/12, 1145-1148. (in Japanese)
Yamato-Omine-Research-Group 1992. Paleozoic and
Mesozoic systems in the central area of the Kii mountains,
southwest Japan (Part 4). Mesozoic of the Takaharagawa
district in Nara Prefecture. Earth Sci., J. Assoc. geol. Collab.
Japan, 46/3, 185-198. (in Japanese)
Yanagida, J., Ota, M. & Sano, H. 1992. Akiyoshi
limestone group: Permo-Carboniferous organic reef complex.
In: Paleozoic and Mesozoic Terranes: Basement of the
Japanese Island Arcs. 29th IGC Field Trip Guide Book.
(Adachi, M. & Suzuki, K., Eds.), vol. 1. Nagoya University,
Nagoya, Japan. pp. 225-259.
Yao, A., Adachi, M., Shibuya, H. & Setoguchi,
T. 1992. Triassic and Jurassic sequences of the Mino Terrane
in Central Japan. In: Paleozoic and Mesozoic Terranes:
Basement of the Japanese Island Arcs. 29th IGC Field Trip
Guide Book. (Adachi, M. & Suzuki, K., Eds.), vol. 1. Nagoya
University, Nagoya, Japan. pp. 179-188.
The Mino (Tamba-Mino-Ashio) terrane of central Japan is one of
the major tectonostratigraphic terranes that constitute the pre-
Tertiary basement of the Japanese Islands, and is thought to extend
north to Sikhote-Alin and northeast China (Kojima, 1989). This
Afanasieva, M.S. & Zamilatskaya, T.K. 1993. The
paleobiogeography of the northeast Precaspian Basinand pre-
Uralian Depression in artinskian time based on Radiolaria and
Foraminifera. In: Radiolaria of giant and subgiant fields in
Asia. Nazarov Memorial Volume. (Blueford, J.R. & Murchey,
B.L., Eds.), Micropaleontology, special Publication vol. 6.
Micropaleontology Press, American Museum of Natural
History, New York. pp. 61-65.
Three biogeographic zones of the Artinskian paleosea in the
Pricaspian Basin and the pre-Uralian Depression were reconstructed
by distinguishing radiolarian paleobiocoenoses, analyzing the
paleoecological distribution of foraminiferal associations, and
comparing lithologic compositions. These zones are: 1, the northern
margin of the Pricaspian Basin together with the western margin of
the pre-Uralian Depression; 2, the eastern margin of the Pricaspian
and pre-Uralian paleosea: and 3, the relatively deep-water basin. The
paleoecologic conditions of the relatively shallow-water basin
margins evidently were the most favorable for the existence of both
radiolarians and benthonic foraminifera. The more impoverished
radiolarian and foraminifera associations in the relatively deepwater
parts of the ancient sea suggest unfavorable environmental
conditions.
Aguado, R., Molina, J.M. & O'Dogherty, L. 1993.
Bioestratigrafía y litoestratigrafía de la formación carbonero
(Barremiense-Albiense?) en la transición Externo-Subbético
Medio. Cuad. Geol. ibérica, 17, 325-344.
The biostratigraphy and lithostratigraphy of the Carbonero Fm.
(Upper Barremian-Lower Albian?), in the transition between the
External Subbetic and the Middle Subbetic (S of the Jaen province)
have been analysed. In this formation three members have been
recognized according to their lithologic characterisation. The age of
each one of its three members has been stated precisely with
calcareous nannoplankton, Radiolaria and planktonic Foraminifera.
1993
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terrane is represented by Late Paleozoic-Mesozoic complex which
consists essentially of Carboniferous-Permian greenstone
limestone-chert, Triassic-Jurassic chert, Early-Middle Jurassic
siliceous mudstone, and Middle Jurassic to earliest Cretaceous
clastic rocks. This sedimentary complex was produced by an
accretionary process during Jurassic to earliest Cretaceous time
(e.g. Mizutani, 1990). This field trip concentrates on observation of
continuous Triassic-Jurassic chert-clastic sequences on the river
bed and bank along the Kiso River in the Inuyama area and the Hida
River in the Kamiaso area, Gifu Prefecture (Fig. 1). The trip includes
a visit to the Kamiaso conglomerate (Adachi, 1971), in which the
oldest geologic record (2050 Ma) in the Japanese Islands was
detected by Rb-Sr whole-rock age determination (Shibata and Adachi,
1974). Discussions will emphasize lithostratigraphy, radiolarian
biostratigraphy, paleomagnetism and sedimentary environments of
the chert-clastic sequences.
Yeh, K.Y. 1992. Triassic Radiolaria from Uson Island,
Philippines. Bull. natl. Mus. nat. Sci., Taiwan, 3, 51-91.
Triasic radiolarian faunas were discovered from the bedded
cherts of Uson Island, North Palawan Block, Philippines. By
correlating with the radiolarians from previous studies, the ages of
Uson radiolarian faunas are dated as late Ladinian, late Carnian, late
Norian, and early Rhaetian, respectively. This report illustrates the
major radiolarian taxa from Uson Island discovered in this study.
Only those forms with better preservation were described herein.
The bedded cherts in Uson Island are lithologically similar to those in
the Busuanga Island. It is believed that the Uson cherts are parts of
the Liminangcong chert which is widely distributed in the North
Palawan Block. Only Triassic radiolarians have been discovered from
Uson Island. The results of this study indicate that the upper Upper
Triassic (Rhaetian) section of the Liminangcong chert exists in Uson
Island.
Zhang, K., Wu, S. & Liu, Y. 1992. Radiolarians and
Conodonts from the Dalong Formation at Hushan of Nanjing
and their Facieological significance. Earth Sci., J. China
Univ. Geosci., 17/3, 295-300. (in Chinese)
The radiolarian and conodont fauna dealt with in the paper were
collected from Hushan near Nanjing City. This fauna comprises 8
species belonging to 6 genera of radiolarians and 12 species
belonging to 7 genera of conodonts. One radiolarian species is new
namely Stauroplegma nanjingensis (sp. nov.). The characteristics of
the fauna and its environmental significance have been discussed.
The Dalong Forrnation is proved to be of deep-water shelf facies.
Three nannoplankton zones have been recognized: Micrantholithus
hoschulzii (Upper Barremian), Hayesites irregularis (Lower Aptian)
and Rhagodiscus angustus (Upper Aptian-Lower Albian). The
determined radiolarian association is characteristically of Lower
Aptian age. According to these bio stratigraphic and lithologic data
the Carbonero Fm is correlated with the Lower Member (Member I) of
the Fardes Fm.
Aitchison, J.C. 1993a. Albaillellaria from the New
England orogen, Eastern NSW, Australia. In: Interrad VI.
(Lazarus, D.B. & De Wever, P., Eds.), vol. 21/4. Special
Issue: Marine Micropal., Elsevier, Amsterdam. pp. 353-367.
Radiolarian data provide important age constraints on the
development of terranes within the New England orogen and have
implications for existing tectonic models. Most radiolarian
assemblages recovered from the orogen are of Late Devonian to
Early Carboniferous ages. Albaillellaria comprise a minor proportion
of the faunas present but have major biostratigraphic significance.
Holoeciscus Foreman, Helenifore Nazarov and Ormiston,
Circulaforma Cheng, Ceratoikiscum Deflandre, Protoalbaillella
Cheng, and Albaillella Deflandre, two new genera and three new
species are found at various stratigraphic levels. Eleven radiolarian
assemblages are recognised. In stratigraphic order these are the
Helenifore laticlavium-Ceratoikiscum planistellare, Protoholoeciscus
hindea, Holoeciscus formanae, Paraholoeciscus bingaraensis,
Ceratoikiscum umbraculum, Protoalbaillella anaiwanensis, Albaillella
paradoxa, Albaillella undulata-Albaillella indensis, Albaillella
indensis-Albaillella furcata, Albaillella cartalla-Albaillella thomasi
and Circulaforma omicron assemblages. There is an apparent
biostratigraphic succession amongst the Albaillellaria in the New
England orogen in which Protoholoeciscus hindea n. gen. n. sp. is
transitional between Ceratoikiscum Deflandre and Holoeciscus
Foreman and Paraholoeciscus bingaraensis n. gen. n. sp. is
transitional between Holoeciscus Foreman and the Albaillella
paradoxa Deflandre group.