A REVIEW OF The Akchagylian of Turkmenistan,A MONOGRAPH BY A.A. ALI-ZADE

The supposed specific distinction of the lower Pleistocene elephants, Elephas Müst Pavlova of eastern Europe and E. trogontherii Pohlig of western Europe, cannot be supported, as shown by evidence adduced by the author; the former is therefore relegated to the synonymy of the latter.—C. E. Ray.     

A NEW METHOD OF PRESENTING PALZEOGEOGRAPHIC MAPS.

One of the most practical developments in methods of teaching historical geology during the last two decades is the wide use of palaeogeographic maps. As an increasing mass of data bearing on the conditions of past periods of the Earth's history has become available through detailed     

7614铀矿床断裂构造的地球化学研究

本文以西北一个铀矿床为例,介绍了一种进行矿床断裂构造地球化学研究的方法,包括了以断裂构造的倾角和倾向为座标的微量元素含量的等值线圆形曲线图;断裂构造的元素频数分布图;断裂构造中元素的多元统计分析。据此,讨论了热液作用和其它地质作用有关的断裂构造中微量元素的相互关系,并进而讨论了它们的铀成矿作用过程以及对找矿勘探的意义。     

两个古铜辉石样品的G.P区研究

在两个斜方辉石样品中观察到G.P.区亚稳相。内蒙古暗色辉长岩古铜辉石成分是En_(77)Fs_(18·6)Wo_(4·4),其高分辨象显示了密集的单层G.P.区;玄武岩中变辉长岩包体古铜辉石成分是En_(72·2)Fs_(25·7)Wo_(2·1),具双层G.P.区。该包体与具多层G.P.区的月岩橄长岩相似,后期冷却极快。在地体火成岩体结晶和冷却过程中易出现单层G.P.区,而岩体的大小,冷却的快慢可能影响G.P.区的密度。对N-14样品不同放大倍数的高分辨象G.P.区线密度和面密度的统计值同样具代表性。文中设想了G.P.区出溶的假二元系相图。     

山东埠后古火山机构显微构造研究

埠后古火山机构由早白垩世陆相火山岩和次火山岩组成,铅、锌、铜、硫矿与后者有关。为了圈定火山通道的大致位置,在熔岩中采制定向切片,进行显微构造分析。通过变形、压密、阻挡、涡流等显微构造标志确定流动方位;利用长条状晶体的长轴方向确定流动线理。根据流动方位和流动线理圈出古火山口位置,进而指出在环火山颈的大断裂一侧,可能具区域找矿前景。     

南京市地基稳定性区划图

为了城市土地的合理使用，保证建筑物的安全，目前在城市岩土工程问题中对土地的合理利用研究和评价方法不断涌现。本文根据南京市的基岩岩性、地貌特征、覆盖层厚度和第四纪松散沉积物分布情况，划分为五个基本类型，各个分区具有不同的工程地质特征。     

C.H.矿区井中原生晕的研究

井中原生晕是深部找矿的一种有效化探方法,它不仅可以为找矿提供信息,而且能对研究矿床的成因及其空间赋存状态提供地球化学方面的依据。本文介绍了C．H．矿区井中原生晕的研究方法及其深部再找矿成果。     

A PRELIMINARY PETROGRAPHICAL STUDY OF THE PEIPIAO COALS.

Ⅰ. INTRODUCTION. The Peipiao coal field is situated about 90 li North of the Chaoyang city, eastern Jehol and is connected with Chin Hsien, a station on the Peking-Mukden railway by a branch line of about 170 li. The region is characterized by a moderately dissected mountain range which runs roughly in a N. E. —S. W. direction.     

ON THE OCCURENCE OF A MONGOLIAN EOCENE PERISSODACTYLE IN THE RED SANDSTONE OF SICHUAN, S. W. HONAN.

In addition to the Turtle Sinohadrianus described by Dr. C. Ping in the Bulletin of the Geological Society of China Vol. Ⅷ, pp. 231—238, the material collected by Mr. C. Li, of the National Institute of Geology, Shanghai,     

评价直流电法观测精度的一些问题讨论

现行的电法规范,对视电阻率野外观测精度的评价,要求按均方相对误差来衡量,并规定其误差M≤5%;对自然电场观测精度则按平均绝对误差来衡量,要求V≤5毫伏。     

公元600年秦陇地震发震构造分析及考证研究

据史料记载,公元600年秦陇地区发生了一次大地震。关于此次地震的震中位置、震级、震中烈度和发震构造长期存在争议。根据在陇县固关一带发现的地震崩塌体,同时结合史料考证、卫星影像判读、野外调查、探槽开挖、年龄测试等手段,研究认为:公元600年秦陇地震的发震构造为六盘山东麓断裂南段固关段;秦陇地震震中在陇县固关镇一带,震级为6$ {}^{3}\!\!\diagup\!\!{}_{4}\; $级,震中烈度为Ⅸ度。该地震的研究对于六盘山地区地震危险性评估和青藏块体北东向扩展的动力学过程理解有重要意义。      

A MICROSCOPICAL STUDY OF SOME COALS FROM SZECHUAN, S. W. CHINA

That the geology cf the Chinese coal fields is becoming better and better known is evidenced by the numerous publications put out from tirne to time by the different investigators, especially by the members of the National Geological Survey in Peking. But little attention seems to have been paid to the microscopical     

A STATISTICAL STUDY OF THE DIFFERENCE BETWEEN THE WIDTH-HEIGHT RATIO OF SPIRIFER TINGI AND THAT OF SPIRIFER HSIEHI.

In my geological reconnaissance in east Yunnan in 1914 I collected from a series of shales, sandstones and impure limestones, which underly the Lower DeVonian beds containing Arthrostigma gracile, a large number of small, but     

ON A NEW GENUS OF SYRINGOPOROID CORAL FROM THE CARBONIFEROUS OF CHIHLI AND FENGTIEN PROVINCES.

In the course of my study on the Chihsia Corals from Central China, Mr. Y. T. Chao my collegue of the Geological Survey was so kind as to hand over to me two specimens of tube corals which he personally found in a limes-     

ON A COLLECTION OF MAMMALIAN FOSSILS FROM CHIACHIASHAN NEAR TANGSHAN.

Some years ago Mr. Kao of the Kailan Mining Administration collected some vertebrate fossils from Chiachiashan near Tangshan. These materials were sent to the Musée Huangho-Peiho in Tientsin. As examined by     

普氏卸荷拱理论在某人防工程中的应用

人防荷载计算的准确与否关系到建筑的设计是否安全,投资是否经济;本文通过实例,阐述了普氏卸荷拱理论在人防计算中的应用,从而给出了对人防的最佳处理方案.     

台湾新第三纪扇蟹类化石

台湾北部及中部於第三纪鲜新世下部之锦水页岩(新定义之锦水页岩,相当本人丰原地方之埤头山层群)中,产一种扇蟹化石,因此称扇蟹化石产出很多,并且只限产於新定义之锦水页岩中,故於地层对比上有相常之重要性。