Stratigraphic Observations at the Eastern Hill of Taiyuan-fu, in the Shansi District, North China.,
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In this short paper, the writev describes the results of his stratigraphic observations in 1939 in North China., The Eastern Hill of Taiyuan-fu in the Shansi district stratigraphically consists, in descending order, of the redeposited loess, the loess (the Malan stage), the sand and gravel formation (the Sanmenian stage), the purple or reddish chocholate sandstone (the Permo-Triassic), the light brown sandstone, the Neuropteris-bearing shale (the Permo-Carboniferous), the limestone, the Chonetes carbonifera-bearing black shale (Middle Carboniferous), the alternation of black shale and sandstone, the basal conglomerate with iron nodules, and the Cambro-Ordovician limestone., As may be seen from a comparison of the stratigraphic columns established by NORIN and other authors in the Western Hill of Taiyuan-fu and the Shihhotze valley with the writer's, it is likely that some Permian and Carboniferous stratigraphic facies in the former lack in the latter.,Keywords:
Conglomerate
The term formation is the basic lithostratic unit which is divided based on the lithological characters. The Carboniferous Permian strata developed well in the Deriangma Xiala section and the Angjie section in Shenzha, Tibet. All the lithostratic units of the Carboniferous and Permian strata in this area were named after them. However, some of them were not defined based on the lithological characters but on the fossil assemblages in the sections, and do not accord with the principle of the multiple stratigraphical classification. And the lithostratic system of the Carboniferous Permian has been a controversial subject for a long time. The lithostratic systems of the Carboniferous Permian in the area are manily remarked by the author in the present paper, and the Carboniferous Permian boundary is discussed briefly.
Section (typography)
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In order to understand the distribution of Carboniferous-Permian in Ejina Banner and its vicinities,and provide evidence for oil and gas resources investigation and evaluation,through fine processing and interpretation of previous data and newly finished integrated geophysical survey sections,by using joint inversion of gravity,magnetic and electronic data under restriction of seismic and well data,this paper preliminarily presented the distribution and burial situation of Carboniferous-Permian residues in the region.Thus it is concluded that the Carboniferous-Permian strata show the characteristics of thicker residual and suitable depth.The method has solved the technical problem of Carboniferous-Permian distribution interpretation and provides evidence for Carboniferous-Permian research within the internal part of the basin.
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Inner mongolia
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Conglomerate
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T he recurrence of Carboniferous species in Permian strata is not new to palæontologists; for recurrent species from the Carboniferous fauna, and such as were supposed to be recurrent, have been noticed by several observers. Messrs. Lonsdale, Jones, Howse, King, and Davidson, as well as others, have identified Permian with Carboniferous species, or vice versâ , though it may be remarked that in some cases their determinations have been undoubtedly erroneous. The discovery of another species which had long been thought characteristic of the Permian period, in Carboniferous strata, is therefore not so novel a fact as might appear at first sight. At the same time, I deem it well to record its occurrence, which is not without importance. It is of interest merely as the discovery of another species which is common to the faunæ of the two later palæozoic eras; and it is of consequence as a fact which assists in illustrating some of the physical conditions which prevailed during the deposition of the Upper Coal-measures of the North of England. In the Permian formation, Lingula Credneri is confined to the lower strata. In England it is restricted to the “Marl-slate,” and the lower beds of the “Compact Limestone.” It is not common in these members, having been found only at Ferry Hill, Thrislington, and Thickley. As a Carboniferous shell it only occurred to me during the summer of last year (1858), at the Ryhope Winning, near Sunderland. I first observed it in a thin bed of dark shale, at
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This paper reviews the sedimentary systems, oil-gas bearing systems of the Carboniferous and Permian and typical oil and gas fields in northwestern China. It suggests that the Carboniferous and Permian are important sequences for petroleum exploration due to their bright potentials and prospects. Also, this paper gives some favorable areas for further exploration.
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The Paleozoic rocks which occur in the Miharaiyama district belong to the Minamitani group., They are correlated with the rocks of Kuma series (Upper Permian), which are typically expose in Kumamoto Pref., The Minamitani group contains special deposits such as the so-called Yasuba conglomerate., The Mesozoic Miharaiyama group is correlated with the lower part of the Inai series and is considered Scythian in age., It is subdivided as follows: Gannosudani formation G3 bluish grey siltstone -200m G2 bluish grey sandstone -80∼95m G1 conglomerate-50∼80m Niikuradani formation N2 bluish grey sandstone -30∼60m N1 basal conglomerate -15∼30m Minamitani group (Upper Permian) The Niikuradani formation contains no fossils, but the Gannosudani formation, especially G2 is rich in fossils which are listed below., G3: Nuculana sp., Myophoria aff., laevigata G2: Neobakevellia kambei M., S., M., aff laevigata (abundant) Neob., kambei sakaigawensis M., S., Nuculana sp., Rhynchonella sp., Terebratula? sp., etc., (rare) An unconformity was discovered between the Miharaiyama group and the underlying Paleozoic rocks., The Lower Triassic formations in Japan are local and very limited in occurrence., They are generally jammed into others formations by faults., Previously, the disconformable relation of the Lower Triassic with the Upper Permian Series (≒Kuma series), had beenknown only in the Kitakami Mountains, Miyagi Prefecture., The discovery of the unconformity mentioned above may be important in the study of the late Paleozoic crustol movement in Japan.,
Conglomerate
Siltstone
Early Triassic
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