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羌塘盆地北部马料山侏罗纪布曲组地层古生物及沉积环境 被引量:7
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作者 赵兵 伊海生 +3 位作者 林金辉 时志强 李保华 黄继均 《地质通报》 CAS CSCD 北大核心 2002年第7期415-420,共6页
详细描述了羌塘盆地北部乌兰乌拉湖地区马料山侏罗系剖面,将剖面划分为雀莫错组、布曲组和夏里组3个岩石地层单位,其中布曲组出露齐全,化石丰富。根据沉积环境及相对海平面变化规律将布曲组划分为2个沉积层序,并讨论了各体系域特征。依... 详细描述了羌塘盆地北部乌兰乌拉湖地区马料山侏罗系剖面,将剖面划分为雀莫错组、布曲组和夏里组3个岩石地层单位,其中布曲组出露齐全,化石丰富。根据沉积环境及相对海平面变化规律将布曲组划分为2个沉积层序,并讨论了各体系域特征。依据马料山剖面布曲组的生物组合及分布特征建立了1个双壳类生物组合带即Chlamystipperi-Protocardiastricklandi组合带,并细分为3个组合亚带,其时限为中侏罗世巴通期。 展开更多
关键词 古三物 羌塘盆地 马料山 侏罗系 布曲组 沉积环境 雀莫错组
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A Defined Process to Digitally Reproduce in 3D a Wide Set of Archaeological Artifacts for Virtual Investigation and Display
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作者 Grazia Tucci Daniela Cini Alessia Nobile 《Journal of Earth Science and Engineering》 2012年第2期118-131,共14页
This paper contributes to depict the current pattern of applications of digital 3D models for professional research and practice, and for broader dissemination of cultural heritage. Passing from a general review to th... This paper contributes to depict the current pattern of applications of digital 3D models for professional research and practice, and for broader dissemination of cultural heritage. Passing from a general review to the illustration of the background project, named MUSINT, the authors underline the objectives. The present case study primarily aims to share information about valuable archaeological collections which have little visibility. To enhance the project's contents, which include a whole set of different artifacts, the authors have reproduced high resolution, faithful and measurable digital models on one side, and on the other, lower resolution and geometrically simplified models are yet completed and very close to reality. The former are meant to implement a scholars' archive for further scientific activity. The latter to provide content for virtual exhibitions on the Web or on stand-alone interfaces situated in the actual physical museum spaces. The data acquisition and post-processing methods which have been tested and chosen are here briefly described. Hence, the authors then give an account of the most recurrent problematic issues of the established work-flow and how they should be solved. Touched instances are the delicate placing of the artifacts, which must be digitized, in relation to the triangulation-based laser scanner's functionality, the refining operations in order to build a coherent single polygon mesh, the most effective ways to deal with unavoidable missing parts or defected textures in the generated model and so on. 展开更多
关键词 Cultural heritage ARCHAEOLOGY laser scanning NextEngine ACQUISITION processing protocol virtual museum.
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