PERMIAN--TRIASSIC FLYSCH TRACE FOSSILS FROM THE GUOLUO AND YUSHU REGIONS,QINGHAI

Yang Shipu

The flysch trace fossils described in this paper including 15 ichnogenera and 20 ichnospecies,Were collected from the Permian--Triassic strata in the Guoluo and Yushu regions, southern Qinghai, thses two places have been most abundant in trace fossils of Nereites facies in China up to now.All trace fossils are well-preserved,and with quite abundant varieties. Among them, the Pascichnia and Agrichnia are predominant with a few Fodinichnia, but common shallow Domichnia and Cubichnia are absent, so it's proved that these trace fossils developed in turbidites of deep-sea slope environments. The fossil sites are just located on the Maxin-Xiugou conve-rgent joint zone in Guoluo and near the crustal consumption zone between the Tanggula Plate and Bay an kela Plate, of Yushu.The following fossils are described in this paper,such as,Chondrites, Impona}glphus,Helicolithus,Helminthopsis, Hel- minthoida, Nereites, Neonereites, Lophoctenum, Megagrapton, Paleodictyon, Protop-alondictyon, Phycosiphon, Plaaolites, Spirophycus and Sublorenzinia.

1 Bijing Graduata School;

Received Date: 1986-01-28

Publish Date: 1988-03-10

Abstract: The flysch trace fossils described in this paper including 15 ichnogenera and 20 ichnospecies,Were collected from the Permian--Triassic strata in the Guoluo and Yushu regions, southern Qinghai, thses two places have been most abundant in trace fossils of Nereites facies in China up to now.All trace fossils are well-preserved,and with quite abundant varieties. Among them, the Pascichnia and Agrichnia are predominant with a few Fodinichnia, but common shallow Domichnia and Cubichnia are absent, so it's proved that these trace fossils developed in turbidites of deep-sea slope environments. The fossil sites are just located on the Maxin-Xiugou conve-rgent joint zone in Guoluo and near the crustal consumption zone between the Tanggula Plate and Bay an kela Plate, of Yushu.The following fossils are described in this paper,such as,Chondrites, Impona}glphus,Helicolithus,Helminthopsis, Hel- minthoida, Nereites, Neonereites, Lophoctenum, Megagrapton, Paleodictyon, Protop-alondictyon, Phycosiphon, Plaaolites, Spirophycus and Sublorenzinia.

HTML

Reference (10)

[1]	赵荣理1980，青海玉树地区上三叠统巴塘群的新认识，青藏高原文集2
[2]	杨式溥、宋志敏、梁定益1982，地质学报第4期302-313页
[3]	杨式溥、宋志敏、梁定益1983，地球科学(武汉地院校刊)1卷，93-103页。
[4]	Chamberlain,1971,Morphology and ethology of trace fossils from the Ouachtia Mountains, southeast Oklahoma. Jour.Plaeontol.v.45, p.212-246.
[5]	Crimes T.P.，1977,Trace fossils of an Eocene deep-sea sand fan, northern Spain,in Trace fossils 11 p.71-90.
[6]	Crimes T.P.,R.Goldring, P.Homewood,3.van Stuijvenbert and W.ZVinkler,1981， Trace fossils assemblages of deep-sea fan deposites, Gurigel and Schlieren flysch (Cretaceous-Eocene)Switzerland, Ec}ol.Geo1.Helvetiae, V.74, p.953-995.
[7]	Hantzschel W.，1975, Trace fossila and problematica.p .1-369.in Treatise on inver-tebrate paleontology part.
[8]	Seilacher A.,1967, Bathymetry of trace fossils, Marinc Geol, V. 5 p413-425,
[9]	Seilacher A.,1974, Flysch trace fossil. evolution of behavioral diversity in the deep-sea. Neues Jahrb, Geol. Palaontol. Mh, V.1974 p.233-245·
[10]	Seilacher A. 1977 Pattern analysis of paleooictyon and related tra-ce fossils, inTrace sossils 11, p.289-334.

PERMIAN--TRIASSIC FLYSCH TRACE FOSSILS FROM THE GUOLUO AND YUSHU REGIONS,QINGHAI

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related