BOOK REVIEW

MULTIVARIATE CALIBRATION,H.Martens and T.Naes,Wiley,New York,1989.ISBN 0 471 909793.Price:75.00,US$138.00.No.of pages:504Great progress has been made in the lastdecade in the area of multivariate calibration.The authors have contributed substantially to thisprogress and now present a well organized andmuch needed unified treatment of the subject.     

A Juvenile Specimen of Sauropodomorpha from the LowerJurassic of China and a Brief Review of the LufengSauropodomorph Fauna

An incomplete dinosaur skeleton,including a partial skull,recently discovered from the Lower Jurassic Lufeng Formation of Yunnan,China,is here reported.Apart from its small size,little anatomical evidence supports,a priori,the non-adult status of this new sauropodomorph specimen but osteohistological analyses suggest that it is a fast-growing juvenile. This specimen represents only the second occurrence of a juvenile non-sauropodan sauropodomorph in the Lufeng Basin. The anatomy of the new specimen does not match that of other Lower Jurassic immature specimens;although cranial material is preserved,it does not display the diagnostic characters of early sauropodomorphs from the same horizon,namely Lufengosaurus,Yizhousaurus and Yunnanosaurus.Our phylogenetic analysis places the new specimen in a position relatively distant from other Chinese sauropodomorphs,and corroborates the anatomical evidence showing it is not referable to any known species already excavated in Yunnan.This result is interpreted with caution considering that ontogeny affects phylogenetic reconstruction.A thorough comparison with adult forms,taking into account ontogeny-related characters,suggests that this Lufeng juvenile might represent a previously unknown species of early sauropodomorph.     

湘中寒婆坳矿区测水组无烟煤—煤系石墨变质温度研究

煤系石墨是由煤经构造—岩浆事件改造而成的煤系共伴生矿产资源.为探究无烟煤—煤系石墨的变质温度,以湖南新化寒婆坳矿区无烟煤—煤系石墨及其顶底板岩石、夹矸为研究对象,采用变质矿物组合特征、镜质体反射率地质温度计和拉曼光谱地质温度计等手段进行研究.结果 表明:大规模岩浆侵入初期,煤层及其顶底板受热温度较高,但持续时间短,而煤石墨化过程和围岩变质过程相对缓慢,最终,煤系石墨及其围岩与周围环境的热力学平衡温度相对较低.多手段综合确定寒婆坳矿区无烟煤的变质温度为220～250℃,变质无烟煤的变质温度为330～370℃,煤系半石墨的变质温度为390～450℃,石巷里矿煤系石墨变质温度为500～550℃.寒婆坳矿区无烟煤—煤系石墨变质系列整体上处于中低温变质作用阶段.研究结果可为煤系石墨勘探靶区圈定提供科学指导.     

摩天岭地区古山体垮塌作用与铀成矿关系

在摩天岭地区,铀矿床产出在断陷带和岩体边缘的舌形凹陷带。这些地带为现代剥蚀物的堆积区,与现代地形汇水区关系密切。大量资料表明,成矿流体原始水为大气降水,赋矿构造为帚状构造。这些特征表明,古山体垮塌是造成铀成矿的主要原因,古垮塌体形成成矿前的含水体,为成矿流体提供原始水。本文阐述了摩天岭地区山体垮塌的几种类型,帚状构造的形成以及与铀成矿的关系。     

Nature Conservation versus Scenic Quality：A GIS Approach towards Optimized Tourist Tracks in a Protected Area of Northwest Yunnan,China

Development of appropriate tourism infrastructure is important for protected areas that allow public access for tourism use.This is meant to avoid or minimize unfavourable impacts on natural resources through guiding tourists for proper use.In this paper,a GIS-based method,the least-cost path（LCP） modelling,is explored for planning tourist tracks in a World Heritage site in Northwest Yunnan（China）,where tourism is increasing rapidly while appropriate infrastructure is almost absent.The modelling process contains three steps：1） selection of evaluation criteria（physical,biological and landscape scenic） that are relevant to track decision; 2） translation of evluation criteria into spatially explicit cost surfaces with GIS,and 3） use of Dijkstra＇s algorithm to determine the least-cost tracks.Four tracks that link main entrances and scenic spots of the study area are proposed after optimizing all evaluation criteria.These tracks feature lowenvironmental impacts and high landscape qualities,which represent a reasonable solution to balance tourist use and nature conservation in the study area.In addtion,the study proves that the LCP modelling can not only offer a structured framwork for track planning but also allow for different stakeholders to participate in the planning process.It therefore enhances the effectivenss of tourism planning and managemnt in protected areas.     

云南麻栗坡洒西丫口白钨矿成矿规律

晚志留世和白垩纪岩浆活动为成矿提供热源,碳酸盐岩为成矿提供化学反应场所、溶矿空间。圈出的3条白钨矿体以简单似层状沿Pt3s/Pt3n间构造面理(韧性剪切断裂带)产出,受Pt3s底部的层状矽卡岩(钙硅酸盐岩)控制。进一步工作,可望在接触带两侧找到理想白钨矿床。