摘要:The westmost boundary of the Wushan Formation of the lower Cambrian deposits in the Central-Southern Shandong starts from Tangshan in Yiyuan County and ends to the east of Jiuzhai and Jiepai in Mengyin County. In this region, the depositlonal characters are: (1) a large depositional area with the depositional materials supplied sufficiently from the land; (2) the extensive subsidence of the area during the Ca mbrian period; (3) the frequent fluctuation of the sea level and a strong scouring by sea water wit...

摘要:The Cambrian strata are well-developed in Shandong Province of China. Many geologists and paleontologists have researched them for a long time. Lu Yanhao and Dong Nanting made a investigation into Zhangxia of Changqing Area in 1953 and established the Cambrian key section of the North China Faunal Province in North China. Based on the presence or absence of the Lower Cambrian Canglangpuian deposits and the sedimentary characters of the Middle Cambrian Zhangxiaian stage, the present writers preliminarily div...

摘要:The cephalopoda fossils described in this paper were collected from the first member of the Zhifangzhuang Formation of Ezhuang, Zibo city and Xiaohuiquan of Juxianconnty, Shangdong Province. The discovery of Barnesoceras, Dakeoceras, Clarkoceras, etc. in the middle and upper parts of the first member of the Zhifangzhuang Formation is of great geologic significance becanse they are index fossils for the base of the Gasconadian Formation (Lower member of the Canadian )in North America. The age of Barnesoceras...

摘要:The Present paper deals with the spores and pollen obtained from the Guanzhuang Formation of the Lower Tertiary in the Tailai Basin, Shandong. Two palynological assemblages can be recognized in ascending order as follows:1. "Triporopollenites"—Rhoipites assemblage from the lower part of the second member of the Guanzhuang Formation (early Eocene).2. Quereoidites—Pinaceae assemblage from the upper part of the second and third members of the Guanzhuang Formation (middle-late Eocene).

摘要:The Tancheng—Lujiang fault belt(namely Tan—Lu Fault), which starts from Guangji, Anhui in the south and extends northerly into the territory of USSR with a length of 3500km and a width of tens to 200 km, is a complex NNE — trending fault belt deeply cut through the mantle in the fringe of the China continent.This is a great strike—slip fault formed at the end of Triassic as a result of jointly action of a compressional stress in NS-direction, which was caused by the collision of the North-and South China Bl...

摘要:The Xintai--Duozhuang fault lies in the central part of Shandong Province. The fault trends in the northwest direction and has controlled the evolution of the Mengyin Basin, This paper discusses the characteristics of the Xintai--Duozhuang fault in terms of its activities since the Mesozoic ere on the basis of its structural features, regional stress field as well as the strata.1. The Xintai--Duozhuang fault was a normal fault with a little sinistral shearing at the end of the late Jurassic and(or)the begin...

摘要:It is known from the regional geological surveying recently in Northwestern Jiaodong that the oldest isotopic age value of the Archaeozoic Jiaodong Group, a metamorphic complex, is only 1664 Ma and that the isotopic age value of the Linglong granite complex varies from 46 to 476 Ma. Obviously, these age values are not consistent with the geological characters of the corresponding geological bodies. The author s study indicates that both the Jiaodong Group and the Linglong granite complex were metamorphosed ...

摘要:On the basis of the data collected during the exploration of the Laiwu lron Deposit and the stuly of the related scientific project on the deposit over Iast twenty years, the authors described and discussed the wall rock alteration of the deposit and its influence on the iron mineralization. It is believed that the deposit studied belongs to a typical contact metasomatic iron deposit. The magnesium-rich dolomitie limestones are favourable beds for Fe-mineralization. The ore bodies are mainly occurred in the...

摘要:The three main accessory minerals, zircon, sphene and apatite which have stable chemical properties are widely distributect in the rocks in the Eastern Shandong Region. The accessory minerals can be used as an indicator of various kinds of geologic processes.Zircon occurred in this region was mainly concentrated during the magmatic stage, and then the pegmatitic stage and pneumatogenic stage. The Zr/Hf ratios are reduced, in turn, from the central facies through the transtional facies and then to the border...

摘要:A program for calculating the gravitational anomalies with the BASIC language is given in this paper, which is based on the theoretical formula or the recalculation of the items of the gravity measurements and can be performed on the PC-1500 calculator. The rationality and the precisions in using the program are also illustrated and the operation tops are examplifled as well.