The International Commission on the History of Geological Sciences （INHIGEO） Symposium on the historical relationship between geology and religion

The 32nd INHIGEO Symposium was held between 28 July and 5 August 2007 in Eichstatt, northeast Bavaria. This part of Bavaria is celebrated for many things, not least its diverse Jurassic fossils. Amongst the latter, the most famous is one of the great ＂missing links＂ in paleontology, the feathered Archaeopteryx with its reptilian teeth. Equally renowned is the lithographic limestone from Solnhofen that was used to produce the early illustrations of Archaeopteryx along with other countless maps and figures in publications well known to historians of geology. It was fitting that the symposium theme was ＂The Historical Relationship of Geology and Religion＂.     

Fourth South American Symposium on Isotope Geology （IV SSAGI）

An increasing number of geologists in South America have turned their attention to isotope geology as a tool in the wider context of the Earth Sciences. As a result, a series of symposia on the South American isotope geology (SSAGI) has been organized every two years to provide an appropriate forum for discussion of methods and applications of stable and radiogenic isotopes.     

The IUGS Commission on Geological Sciences for Environmental Planning （COGEOENVIRONMENT） completes its term

During the last 2 years the IUGS has reviewed its Organisation and Operations to allow more efficient and effective administration into the future. Among the items reviewed was the life of Commissions which have now been defined at a maximum of 8 years. As a consequence COGEOENVIRONMENT, which has been in existence since early 1990, was formally closed down at the IGC in Florence in August 2004. The decision by the IUGS Council to close COGEOENVIRONMENT did not in any way imply that the role of the IUGS in promoting geoscience in environment matters was completed.     

Guidelines for Authors

1 AIM AND SCOPE
GEOSaENCE FRONTIERS （GSF） is a bi-monthly international journal that publishes in English significant original research articles and high quality reviews of recent advances in the frontier fields of Earth Sciences - including stratigraphy and paleontology, mineralogy and petrology, economic geology and fuel exploration, structural geology, lithospheric tectonics, environmental and engineering geology,     

北京平原区第四纪地层分区探讨（Ⅰ）

简要回顾了北京平原区第四纪地层划分的历史,指出了建立和使用中的一些问题。为精细表达和刻画北京平原第四纪地层特征,在全国地层区划的基础上,提出了北京平原区第四纪地层细分的目的、考虑因素和分区原则,最后针对若干问题进行了讨论并提出了处理建议。     

山西地质趣谈（十三）（连载）

（五）五台县炭窑坪 五台山东部五台县石咀乡南5里清水河东岸有一村名叫“炭窑坪”。村子周围尽是25-19亿年前的古元古代地层,与形成煤炭的地层足足差了20亿年。附近也没有石炭纪地层出露,那么这个地名又是从何而来的呢？     

山西地质趣谈（三）（连载）

石灰岩和白云岩都是海相地层中化学沉积岩。现代海水中每公升含钙400毫克,含镁1．35毫克,当它们与溶入水中的CO2结合时,钙就会以方解石CaCO3形式沉淀下来,而镁则以碳酸镁钙[CaMg（CO3）2]即白云石矿物沉积下来。由于海水中Mg很低,所以正常海水沉积中要沉积白云石就很困难了,正常开放水域的海水是难以沉积白云石的,只有在封闭一半封闭的海湾中,受太阳暴晒,海水被剧烈蒸发,海水中钙镁成分在高度浓缩环境下,才可能沉积白云石。因此旱古生代的地层中凡属白云岩为主的沉积地层,必定是不正常的泻湖（封闭一半封闭海湾的地理名称）环境。山西寒武系的上部,奥陶系的下部就是这样的沉积环境。     

征稿简则

《地层学杂志》是全国地层委员会和中国科学院南京地质古生物研究所共同主办、科学出版社出版的专业学术期刊,及时刊载地层学及相关沉积岩石学和沉积环境、构造地质学、古地理学、古生态学、古气候学等基础研究和应用基础研究的原创性研究成果和综述。除研究论文和综述外,本刊常设有前沿评述、研究简讯、学术讨论、论坛、新技术和新方法应用等栏目。     

滇西保山地区岩关（杜内）阶至大塘（维宪）阶界线

依据保山地区岩关晚期地层至大塘早期地层连续发育,化石丰富及动物群既具酉欧区系分子,又具北美区系分子等特征,提出这一地区是我国岩关阶至大塘阶界线层型理想地区,易于与西欧和北美地层对比。     

密西西比型（MVT）铅锌矿床研究进展

密西西比型(MVT)铅锌矿床是全球重要的铅锌矿床类型之一,其铅锌资源量占全球铅锌资源量的20%左右.近几十年来,通过不断的探索,人们在矿床的地质特征、地球化学特征、成矿物质来源、成矿流体运移和沉淀机制、年代厘定以及矿床形成的地球动力学背景等方面取得了重要进展.文章在综合前人工作成果的基础上,就MVT矿床的分布规律、特征、地质背景、矿床地质特征、地球化学特征、成矿模型、控矿因素等方面进行了介绍,并分析了目前成矿模型研究中的各种流体运移机制、金属卸载机制之间的优缺点,探讨了成矿模型研究所面临的问题.同时,将中国典型的MVT矿床纳入到全球MVT矿床的背景之中,进行了相关的讨论.最后,总结对比了主要控矿因素和勘查阶段中物化探方法在找矿过程中的作用.