广西松宫隐伏岩体地学综合方法的推断研究

根据松宫地区地层岩石剪裂角为钝角，地表标志带发育，岩石向深化部热变质程度加深，重磁异常同现，深部存在低阻尼，Ｆ的高异常及向深部岩石的Ｆｅ＾２＋－Ｆｅ＾３＋和脉冲数增大而Ｃ有机／Ｃ无机减少等特征，推断深部存在着隐伏花岗岩体。     

新年贺辞

在新世纪迈入第一个10年、辞旧迎新的美好时刻,我谨代表学会理事会并以我个人名义,向辛勤工作在国土资源系统、石油、煤炭、有色金属、建材、大专院校以及科研院所的广大干部、职工和学会的全体理事、会员致以崇高的敬意和亲切的问候!向长期以来关心和支持学会工作的各级领导和各界人士,表示衷心的感谢和诚挚的祝福!     

古灾害地质学——现今灾害预测的重要基础

(1)目前灾害研究的现状 :①在现代灾害学方面 :重视研究近、现代与人类活动和生存有密切关系的灾害发生、发展和演化的规律 ,有很强的时代感和社会科学内涵 (孙成权等 ,1995 ) ,也包括现代灾害的地质学研究 (宋德人 ,1995 )。由于古地史时期灾害时代久远与今天未有直接的联系加之识别困难等原因而未予重视 ;②地质学研究方面 :地质学研究的主要任务之一是认识地球的发育演化规律 ,地质时期各种突变事件是它重要的研究内容。如浊流、风暴、地震、海水进退(许靖华 ,Ｅ Ｃ Ｚｅｅｍａｎ等 ,1983,1976等 )、生物绝灭、气候突变和行星撞击等方面…     

不断拓宽《工程地质学》的应用范畴

工程地质学(Engineering Geology)是地质学的一个分支科学,其研究内容主要有以下几方面:     

从第30届国际地质大会看同位素地质年代学的最新发展

本文从同位素地质年代学的实验技术和应用领域两方面，概述同位素地质年代学的最新进展，供参考。     

新构造研究的几点回顾——纪念黄汲清先生诞辰100周年

值此纪念黄汲清先生诞辰100周年之际，笔者回顾了“新构造’’研究的早期历史和奥布鲁切夫(B．A.OσpyueB,1863-1956)对新构造研究的贡献，回顾了新构造研究历史中不同阶段的一些特点，介绍了天山内陆新造山带的新构造研究和欧美的“活动构造”研究在新构造的学科发展中的作用。展望了新构造研究当前发展的一些趋向。     

The Structure of Ore-controlling Strain and Stress Fields in the Shangzhuang Gold Deposit in Shandong Province, China

The Shangzhuang altered-rock type gold ore deposit is located in the middle segment of and controlled by the Wang＇ershan fault zone in the northwestern part of the Jiaodong gold province, China. The deformation evolution, the structure of strain and stress fields and its ore-controlling effect in the Shangzhuang deposit are discussed in this paper. It is revealed that the deformation evolution has mainly undergone four phases： the early ductile deformation, the second NE-striking horizontal simple shear, the third NE-striking compression-shear and the final NW-striking compression. The mineralization happened during the third stage in which the maximum principal stress gradually transited from NE to NW. The 3-D numerical simulations of the stress field show that, on the condition that the maximum principal stress is NE-striking, the fracture development in the fault zone is favored, while when the maximum principal stress is NW-striking, the fault zone is relatively extensional and it is suitable for the influx and emplacement of ore-forming fluids. The compression-shear strain field during the mineralization is characterized by the λ-type structure, the positive flower structure, etc. Orebodies are mostly equidistantly located in the dilatational spaces, which are distributed in the integral compressional circumstances. And the dilatational spaces are developed where the fault attitude changes or shear joint systems develop. In the overall compression-shear stress field, the strain field bears self-similarity at multiple scales, including the orebody, ore deposit and orefield. The selfsimilarity of the structure comprises the subequidistant distribution of fractures at the same scale and the similar shape of the fractures at various scales. Yet, due to the special geological structure, the orebodies are mostly located in the hanging wall in the Shangzhuang deposit, which is different from most deposits in the Jiaodong gold province. Analyses of the ore-controlling stress and strain fields in the deposit pro