共查询到20条相似文献，搜索用时 375 毫秒
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四川广元地质遗迹景观及评价 总被引：1，自引：0，他引：1
广元地处龙门山造山带北段,复杂的地质构造演化,铸就了广元优越的自然生态环境和独特旅游资源,它也是地球演化的历史档案,是不可再生的、不可移动的自然遗产。2005年以来,通过系统的资料查阅和多次的现场调查,根据广元主要地质遗迹和资源分布的地质背景,对地质遗迹景观类型进行了划分研究,在资源品质、开发条件初步评价基础上,提出了地质遗迹景观开发建议。 相似文献
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峨眉山在1996年与乐山大佛一同被列入世界自然与文化遗产名录,是自然和文化的双重遗产之地。其地质遗产以麦地坪震旦—寒武系国际层型参考剖面等典型地层剖面、新构造运动产生的峨眉山断块山等现代地貌以及独特的峨眉山玄武岩和峨眉山花岗岩为代表。以峨眉山风景区地质遗迹景观为基础,以上扬子地层分区的部分地层区域、四川盆地东缘断块山地貌单元为研究视角,构建峨眉山地质遗迹资源体系——包括5个大类、18个亚类共60余处地质遗迹景点;在峨眉山地质构造特征分析的基础上,对前人研究进行了总结,探讨了峨眉山风景区地质构造特征、地质遗迹资源体系类型与分布,以及地质遗迹的地学意义。研究表明,峨眉山风景区完整地层序列的出露是地质剖面类地质遗迹景观、古生物活动遗迹景观以及岩溶地貌景观的物质条件,新生代以来的强烈构造运动为构造地貌景观、水体景观等提供了外动力条件。峨眉山的地质遗迹研究在古生物与地层学、沉积学、地球深部动力学、构造学等方面具有重要科学意义。 相似文献
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《吉林大学学报(地球科学版)》2015,(Z1)
<正>地质遗迹是在地球漫长演化的地质历史时期,由各种内外动力的地质作用形成、发展并保存下来的珍贵的不可再生的地质自然遗产。随着我国地质公园建设的不断深入,对地质遗迹进行科学的评价,成为申报国家或世界地质公园的首要前提,也是地质公园建设中亟需解决的问题。目前,对地质遗迹的评价既包括地质遗迹的资源要素及自身价值,也包括对资源开发的利用条件。而地质遗迹的资源要素及自身价值作为地质公园建设和地质遗迹保护的核心,如何单纯评价地质遗迹的本身价值,需要建立怎样的评价标准, 相似文献
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新疆博格达山链新生代再生造山机理--岩石圈内切层"开""合"造山带的典型代表 总被引：11，自引：0，他引：11
博格达山链是新生代成长起来的山脉，经历了古生代初始造山、中生代伸展调整、新生代复活造山的完整发展演化历程，是开展陆内造山和再生造山研究的理想之地。针对博格达山链新生代再生造山过程中无明显变质作用、岩浆活动、韧性变形等这种“强造山”“弱表现”的造山地质记录特征，根据山体新生代的变形特点、变形构造组合，并结合深部探测资料，提出“双向挤出”断块隆升的造山模式，认为深部南北向相向运移及岩石圈的深部约束是博格达山链新生代再生造山的主要动力机制。 相似文献
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《四川地质学报》2022,(2):347-352
川西高原地区的典型地质遗迹数量众多、类型多样,极具美学观赏和旅游开发价值。由于长期缺乏系统性调查研究,仅有部分地质遗迹分布区建成地质公园、自然保护区等,旅游开发利用程度差异程度较大,不能满足川西高原全域旅游资源开发规划及整体发展需要。依据《地质遗迹调查规范》(DZ/T 0303-2017),通过调查及系统资料收集,对川西高原地区地质遗迹的主要分类、分布规模、空间区划等特征进行研究,基本确定该地区的地质遗迹共分为三大类、十一类、二十四亚类;整体分布区划分为三个地质遗迹分区(川西北高原地质遗迹分区、横断山高山峡谷地质遗迹分区、邛崃山-大雪山极高山地质遗迹分区)和十三个地质遗迹小区(石渠丘状高原-高平原地质遗迹小区、壤塘-黑水中起伏高原地质遗迹小区、若尔盖湿地地质遗迹小区、金沙江中游峡谷地质遗迹小区、沙鲁里山极高山冰川地貌地质遗迹小区、雅砻江中游峡谷地貌地质遗迹小区、九寨沟-黄龙高寒喀斯特地貌地质遗迹小区、雪宝顶极高山冰川地貌地质遗迹小区、汶川-茂县峡谷地貌地质遗迹小区、四姑娘山极高山冰川地貌地质遗迹小区、丹巴矿山地质遗迹小区、贡嘎山极高山冰川地貌地质遗迹小区、踏卡矿山地质遗迹小区),为后续挖掘旅游开发价值并进行全域旅游开发提供了必要的参考资料。 相似文献
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《四川地质学报》2021,(2)
川西高原地区的典型地质遗迹数量众多、类型多样,极具美学观赏和旅游开发价值。由于长期缺乏系统性调查研究,仅有部分地质遗迹分布区建成地质公园、自然保护区等,旅游开发利用程度差异程度较大,不能满足川西高原全域旅游资源开发规划及整体发展需要。依据《地质遗迹调查规范》(DZ/T 0303-2017),通过调查及系统资料收集,对川西高原地区地质遗迹的主要分类、分布规模、空间区划等特征进行研究,基本确定该地区的地质遗迹共分为三大类、十一类、二十四亚类;整体分布区划分为三个地质遗迹分区(川西北高原地质遗迹分区、横断山高山峡谷地质遗迹分区、邛崃山-大雪山极高山地质遗迹分区)和十三个地质遗迹小区(石渠丘状高原-高平原地质遗迹小区、壤塘-黑水中起伏高原地质遗迹小区、若尔盖湿地地质遗迹小区、金沙江中游峡谷地质遗迹小区、沙鲁里山极高山冰川地貌地质遗迹小区、雅砻江中游峡谷地貌地质遗迹小区、九寨沟-黄龙高寒喀斯特地貌地质遗迹小区、雪宝顶极高山冰川地貌地质遗迹小区、汶川-茂县峡谷地貌地质遗迹小区、四姑娘山极高山冰川地貌地质遗迹小区、丹巴矿山地质遗迹小区、贡嘎山极高山冰川地貌地质遗迹小区、踏卡矿山地质遗迹小区),为后续挖掘旅游开发价值并进行全域旅游开发提供了必要的参考资料。 相似文献
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本文系统总结了湖北宜昌地区省级及省级以上地质遗迹资源,认为该地区地质遗迹分布规律主要可概括为两个方面,一是受控于地形和河流的综合作用,以各类地貌景观遗迹为特点;二是各个地质时代地层剖面齐全,古生物化石产地聚集。其中可归类为世界级地质遗迹点为5个,均以“古生物化石”为核心,分别为三峡地区埃迪卡拉生物群、长阳寒武纪清江生物群、黄花场中奥陶统大坪阶“金钉子”、王家湾上奥陶统赫南特阶“金钉子”和远安三叠系南漳—远安动物群。立足于此,文中首次详细总结了这些地质遗迹点的化石代表、科学及科普意义,并从地质遗迹自身保护和应用方式、地质遗迹载体、地学研学、地质文化的传播和文创科普产品5个方面对古生物地质遗迹资源的发展模式进行了详细探讨,从而为宜昌地区全域地质遗迹开发和旅游提供新思路。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献