摘要:The voluminous basement complex occurred in Western Shandong,which has a regional strike in NW or NNW,underlies the Tumeen Group which has an isotopic age older than 738 m.y. Some important geological problems in terms of this hilly land have nnt yet been settled.A study of volcano-sedimentary series is very important for understanding the basement crystalline rocks.In addition,a thorough research of geological evants of Early pre-cambrian has a great significance on the evolution of the crust.A tentative t...

摘要:The fossil insects(Diptera,Nematocera)described in the present paper were collected from the 3rd member of Laiyang formation in Laiyang Bas- in,Shandong Province by the authors in autumn of 1984.They contain 10 species within 10 genera and 5 families,of which 8 species,6genera and 1 family are new.Two species were known from the Upper Jurassic of Zhe- jiang and Hebei Provinces.The authors tend to believe that Laiyang for- mation is of the Late Jurassic age.The diagnoses of the new genera and fa- mily are gi...

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摘要:The petrological,mineralogical,petrochemical and geochmical character- istics of the Linglong granites are similar to those of granitization granites. The variation from the gneissic granite to the medium-coarse grained gra- nite reflects the different ways with which the rocks were formed,and also the course of granitization from the gneissic granite to the medium-coarse grained granite. The Linglong granites,especially the gneissic granite have higher Na and Au contents and lower W、Sn、Mo、Be、Nb and Ta cont...

摘要:Zhaoyuan and Yexian Coun ties in Shandong Province are the important gold production distriets in China.Structures of controlling the gold mineralization are mainlg faults.Based on the study of structures in the field the papar deals with the stress field contreographic prejection and conjugate fracturse deduction of the principal axis of stresses,the states of the stress fields before during and after the gold mineralization are deduced;the trajectory maps of principal stresses and some model patterns of s...

摘要:The paper gives an exposition of the main points of the network technique and discusses the possibility of its application to the management of core drilling operation,the essentials,steps and measures of the network technique, the calculations imvoled in the network node timing and the time lapse of operation and the time difference.A simple and convenient method for calculating the first and the last starting point time of network nodes is proposed,that is: t_(jf)=(~t_(jff)+t)_(max) and ta=(~t_(jfl)+t_l)_...

摘要:Four new species of Redlichiidae described in the present paper were collected from the Mantou Formation(Louwer Cambrian)in Mengyin region, Shandong Province in 1982.They comprises the following species:Redlichia (Redlichia)daiguensis,R.(R.)yimengensis,R.(R.)dongshanensis,Breviredlichia wangyaensis.These fossils were embedded in the yeilow-gray,thin-bedded mu- ddy limestone and gray,thick-bedded limestoneo.These trilobites are associa- ted with Redlichia(Pterorodlichia)chinensis Walcott. In this paper a bri...

摘要:In this paper,the mathematieal methods used in the research on the simulation of groundwater quality and prediction of its pollution trend in Jinin city,Shandong Province were discussed.A mathematical model of groundwater quality was established based on the hydrogeological and enviro- nmental geological conditions in Jinin City,and the finite element and finite difference methods were employed for its solution;the“function smoothing” technigue was adopted to treat the dispersions of values in solving func-...

摘要:For several decades,acetic acid or other organic acids have been used to diissolve limestones and other calcareous rocks for the recovery of conod- ont elements and other microfossils.The standard laboratory procedure has involved immersing the rock samples in 10 per cent acetic acid in buckets or beakers,followed by wet sieving and heavy iiquid and/or magnetic concen tration(Collinson,1963).A flow diagram based on that published by Col- linson is shown in Fig.1. In my experience conodont elements retrieved...