加拿大多伦多大学地质系A.D.Miall教授来华讲学

应中国科学院地质所和兰州地质所的邀请,加拿大多伦多大学地质系教授A.D.Miall于1985年7月1日至30日在我国进行了为期一个月的访问。访问期间除在兰州、北京和玉门讲学外,还在酒西盆地、兰州附近和陕西礼泉唐王陵进行了野外地质考察。Miall教授是一位年轻有为、精力充沛的沉积学家,主要从事碎屑沉积,特别是冲积扇、河流、三角洲沉积的研究,以及沉积盆地分析工作。他曾在加拿大地质调查所石油和沉积研究室工作过,并曾多次在美国和其他国家举办的石油地质讲习班讲学,在1982年举行的国际沉积学家大会上他担任学术秘书长。仅从1974年起,在沉积相和沉积盆地分析等方面发表了近30篇论文。并著有《沉积盆地分析原理》和主编过《冲积盆地的沉积作用和大地构造》两本书。他学识渊博,经验丰富,是现今加拿大知名的地质学家,并活跃于国际学术机构。     

加拿大矿床学家Dr.D.F.Sangster在京讲学

应中国地质科学院矿床地质研究所名誉所长宋叔和先生邀请,加拿大地调所著名矿床学家Dr.D.F.Sangster于1984年1月5日至18日在北京讲学,然后赴湖南水口山和广东凡口铅锌矿作野外地质考察。 Dr.D.F.Sangster此次讲学的主要内容有:①加拿大层控矿床地质特征;②火山块状硫化物矿床地质特征及成矿模式;③结合现代海底热卤水系统,阐述以沉积岩为容矿岩石的喷气矿床的地质特征及成矿模式;④密西西比河谷型铅锌矿床和砂岩型铅锌矿床的地质特征     

Reply to the comments of D.L. Pinti,R. Mineau and V. Clement,and of A.O. Marshall and C.P. Marshall on “Biogenicity of Earth's earliest fossils: A resolution of the controversy” by J. William Schopf and Anatoliy B. Kudryavtsev,Gondwana Research 22 (2012), 761-771

The abundant and diverse assemblage of filamentous microbial fossils permineralized in the ~ 3465 Ma Apex chert of northwestern Australia — among the oldest records of life — are arguably the “best studied,” by the most workers using the most advanced techniques, in the history of science. Despite the extensive body of data establishing the biogenicity of the demonstrably cellular carbonaceous Apex fossils, Pinti et al. (2013) and Marshall and Marshall (2013) have raised issues regarding the interpretation of their studies of the Apex chert presented in our recent review article (Schopf and Kudryavtsev, 2012). We agree with the assessment of both of the relevant papers by Pinti et al. (2009, 2013): the observations they report do not apply to the bona fide microscopic fossils of the Apex chert. Similarly, like the minute objects reported by Pinti et al. (2009, 2013), the “quartz and haematite-filled fractures” discussed by Marshall and Marshall (2013) are mineralic pseudofossils that are not relevant to interpretation of the Apex fossil microbes and their suggestion that “multiple populations of carbonaceous material may be a wide-spread issue through out the Precambrian” is without merit.     

Contents of Vol.1,1988

NO.lMass Extinetion一A Fundamental Indieator for Major Natural Divisions of Geoiogieal History···一··-··一x“D“ovi(徐道一), Zhang Qln、en(张勤文)and su。Ylyln(孙亦因)The Marine Cretaeeous in the Western Part of the Tarim Basin of Xinjiang and Its Depositional Environments···············1···························.·一·...·...............…… ·····、···········,·……Hao Yichun(郝治纯), zeng xuelu(曾学鲁)and Gu。xlan…     

Chemical Composition of Ancient Celadon Material （1127-1279 A.D.） from Zhejiang, China and Its Implication

The microprobe EDXRF equipment was used for analysis of the major and trace elements in glaze layer-transitive layer-body layer of the celadon from the Altar Yao （Kiln） and Laohudong Yao in the Southern Song Dynasty （1127-1279 A.D.）, Zhejiang, China. The K values of the discriminant factor for the celadon wares are larger than 8, which means the celadon of the Altar Yao and Laohudong Yao are different from that of the Longquan Yao. The former two belong to the Guan Yao system （the Chinese imperial kilns）, but the latter to the Min Yao system （the Chinese popular kilns）. The principle component analysis shows their relationship between the Altar and Laohudong wares with provenance postulation. The thickness of the transitive layer in the Altar and Laohudong wares is obviously different, which reveals the microstructure characteristics of the celadon even though both kinds of wares belong to the imperial kiln system.     

A. V. Peyve — the founder of the concept of deep faults

The further development of Peyve’s concept of deep faults in the Earth’s crust and brittle part of the lithosphere is discussed. Three aspects are accentuated in this paper: (1) the modern definition of the term deep fault; (2) the parameters of deep faults as ruptures of the geological medium and three-dimensional, often boundary, geological bodies; and (3) reactivation of deep faults, including the development of this process in real time. Peyve’s idea of deep faults readily fitted into the concept of new global tectonics (plate tectonics). This was facilitated, first of all, by the extensive efforts made to elaborate Peyve’s ideas by a large group of researchers at the Geological Institute of the Russian Academy of Sciences (GIN RAS) and other scientists. At present, the term deep fault has been extended and transformed to cover three-dimensional geological bodies; the geological and geophysical properties and parameters of these bodies, as well as their reactivation (recurrent activation) in real time, have been studied.