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1985 Vol. 3, No. 2

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FORMATION OF LOW PERMEABILITY SANDBODIES AND SECONDARY PORE SANDBODIES IN THE UPPER TRIASSIC YANCHANG SERIES OF SOUTH-WESTERN SHAN-CAN-NING BASIN
Zhu Guohua
1985, 3(2): 1-17.
Abstract:
It is of great significance to prospect sandbodies with good petrophysical properties in the Upper Triassic Yanchang Series of Shan-Gan-Ning Basin. This paper presents the diagenesis and digenetic' history of sandbodies in Yanchang Series, southweste...
A PRELIMINARY STUDY ON GEOCHEMICAL CHARACTERISTICS OF COAL-TYPE GAS IN ZHONGYUAN-HUABEI OIL-GAS AREA
Xu Yongchang, Shen Ping
1985, 3(2): 37-46.
Abstract:
There is a brief discussion about the naming of several main combustible natural gases in the first part of this paper. The authors suggest that the natural gas relative to the formation of oil be named oil-type gas; the one now called coal-gas be na...
CLAY MINERALS FROM THE STRATA NEAR THE CAMBRIAN- ORDOVICIAN BOUNDARY SECTION AT WUSHAN OF LULONG, HEBEI PROVINCE
Wang Zongzhe, Yangjiedong
1985, 3(2): 57-66.
Abstract:
Because of better exposure of rock outcrop, complete succession of the rock sequence, abundant critical fossils and typical marine sediments, Wushan section in Hebeei Province has been already considered an excellent Cambrian-Ordovician boundary stra...
TRACE FOSSILS AND THEIR SEDIMENTARY ENVIRONMENTS IN THE UPPER PERMIAN AND DEVONIAN OF SANGLANG AREA, SOUTHERN GUIZHOU
He Yuanbi, Gao Weidong, Zhang Tingshan
1985, 3(2): 75-84.
Abstract:
There are more abundant trace fossils in the Upper Permian and Huohong and Caihua formations of the Middle and Upper Devonian of Sanglang area, Southern Guizhou. They amount to 7 genus and 10 species, of which 2 genus and 4 species are new. There are...
STUDY ON THE RELATIONSHIP BETWEEN THE CHARACT- ERISTICS OF CARBONATE FACIES OF THE UPPER AND MIDDLE DEVONIAN SERIES AND MINERALIZATION OF LEAD-ZINC DEPOSITS IN SIDING-GUDAN DISTRICT, GUANGXI
Yang Chuxiong, Fu Tongyi, QinHuanran
1985, 3(2): 97-107.
Abstract:
Based on the survey, analysis, correlation of systmatic facies section, transverse trace of outcrops, and study in the laboratory, the carbonate strata of the Upper and Middle Devonian Series in this area may be classified into two facies regions, th...
APPROACH ON DEPOSITION ENVIRONMENT AND FOR- MATION PROCESSES OF EARLY JURASSIC IRONSTONE IN EASTERN SICHUAN AND ITS ADJOINING AREA
Xu Xingguo
1985, 3(2): 119-128.
Abstract:
The ironstone is gray, dark purple micriti, intraclast siderite with an interla-yer of purple intraclast hematite of 1-5.5m thick. It is found on the quartzose sandstone and coal bed of river and lake-shore facies in lower Jurassic, it is 2-10m thick...
THE CHARACTERISTICS AND ENVIRONMENTAL SIGNIFI- CANCE OF GRAIN-SIZE DISTR旧UTION OF HALAHU LAKE-SHORE SEDIMENTS
Wu Anbin
1985, 3(2): 141-150.
Abstract:
Some maincharacteristics of grain-size distribution of sand-gravel sediments have been presented in this paper through the grain-size analysis of Halahu lake-shore sediments. Most of the lake-shore sediments are of unimodal form in sizehistogram,and ...
Contents
MINERALOGY OF HIGH ALUMINA CLAY-BAUXITE DEPOSITS IN SHANXI AND HENAN PROVINCES
Liu Changling, Shi Zichen
1985, 3(2): 18-36.
Abstract:
In technology field the refractory clays with Al2O3 46% are called high alumina clays among which Al/Si≥2.6 is called bauxite.Paleozoic high alumina clay-dauxite deposits are aboundant in China. They are mainly distributed in Shanxi and Henan provinc...
STUDY ON THE SECONDARY PORES OF SANDSTONE OF THE LOWER TERTIARY IN DONGYING DEPRESSION, SHANDONG
Lu Zhengmou
1985, 3(2): 47-56.
Abstract:
The reservoirs of sandstones of the Lower Tertiary in Dongying Degression,Shandong were proved to be quite developed.The writer tried to determine the structure type, genesis, abundance, distridution of secondary pores and their controlling factors s...
PRELIMINARY STUDY ON THE ORIGIN OF THE RADIOLARIA- BEARING SILICEOUS ROCKS OF MAOKOU FORMATION (LOWER PERMIAN), SOUTHEAST HUBEI PROVINCE
Thong Yuming, Zhou Zuxun
1985, 3(2): 67-74.
Abstract:
From the field observation and study on petrology and paleobiology of the siliceous rocks of Maokou FormationCthe Lower Permian),Southeast Hubei Province, we have found many radiolarias, such as Stauroloche sp., Cenellipsis sp., Cenosph-aera sp., etc...
ARE THESE THE OLDEST METAZOAN TRACE FOSSILS ALSO? -A PROBE INTO BURROW-LIKE TUBE FILLING STRUCTURES IN CHANGZHOUGOU FORMATION OF THE UPPER PRECAMBRIAN IN MING TOMBS DISTRICT, BEIJING
Song Tianrui, Gaojian
1985, 3(2): 85-96.
Abstract:
There is a set of tidal flat deposits, with the correlated geochronological data about 1950 m.y., made of sand-silty mudstone interlayers in Changzhougou Formation of Changcheng -System in the lower part of the Upper Precambrian strata in Ming Tombs,...
MICROFACIES MARKERS OF CLASTICS OF THE LOWER TERTIARY IN JIYANG SAG
Chen Shuzhu
1985, 3(2): 108-118.
Abstract:
The application of microfacies markers to the identification of sedimentary facies has been rarely found at home and abroad. It only shows a preliminary attempt at present. With the progress of the exploration and development of the Jiyang Sag, it ha...
SEDIMENTATION AND SEDIMENTARY FACIES OF THE ZHUJIANG (PEARL RIVER)MOUTH
Wang Wenjie
1985, 3(2): 129-140.
Abstract:
The Zhujiang river mouth is a drainage basin of Zhujiang river system. The amount of yearly average runoff is totally 341.2xl08m3, and the amount of annual suspended silt is 83.36 million tons, 80% of which enters into the Zhujiang river mouth area. ...