古地理的
- 与 古地理的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Most of the published suid fossils are reviewed and suggested a new systematic position now. The relationship of Chinese fossil suoids with that from Indian subcontinent and Europe are carefully discussed, the new understanding of Paleogeography and paleoecology during the Neogene of China are proposed.
通过对各时期我国发现的猪形类化石的重新研究,厘定了我国所有重要猪形类化石的分类,并对中国猪形类与印巴大陆、欧洲大陆猪形类的关系进行了详细的探讨,对古地理、古气候提出了新的见解。
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It has been caused much attention by many geologists at home and abroad. Based on the rich dinosaur resources in Henan Province, the author has obtained some important results through the scientific study and protection research of dinosaurs and,these results can help to discover more and more complete dinosaurs and other vertebrate fossils, to promote and raises the research level on the systematic paleontology and dinosaurs in Henan Province, and thus provides important scientific data on stratigraphy, paleogeography and paleoenvironment of Mesozoic basins, which can accelerate to build protection system at all levels and geological parks, all these can bring about a great advance in environment protection, tourism economy, agriculture, industrial production and social civilization.
以河南丰富的恐龙化石资源为依托,通过对恐龙化石的调查、发掘,科学特征和保护研究,不仅可获得一批重要的科研成果,促使发现更多更完整的恐龙化石和其它脊椎动物化石,促进和提升河南省恐龙研究水平,为中新生代盆地地层学和古地理、古环境研究提供重要的科学素材,而且可促进地质遗迹保护和地质公园建设,带动生态环境保护、旅游经济等方面的发展,达到促进地区经济效益增长和社会进步之目的。
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The early Palaeozoic black shales widely distributed in southern China, which were majorly formed in followimg periods: Hetang period of Early Cambrian, Miaopu period of Middle Ordovision, Wufeng period of Late Ordonision and Longmaxi period of Silurian.
本文通过对四期缺氧期间黑色页岩的分布、沉积特征及古构造、古地理背景的研究,指出华南缺氧事件和黑色页岩的形成可以由地内或地外的多种因素引起。
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It is distributed only in Yuanbaoshan mountain in northern Guangxi. Abies yuanbaoshanensis having survived the Quaternary Period Ice-age is significant not only to studying the occurrence and evolution of the Chinese ancient south plant flora but also to the ancient climate and geography.
元宝山冷杉是第四纪冰期幸存下来的濒危物种,在广西的发现,对于研究我国南方古代植物区系的发生和演变,以及古气候、古地理有重要意义,特别是对第四纪冰期气候的探讨有学术价值,它是研究气候变化和植物变迁的依据,是活化石。
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New data reveal that the age of the so-called Gigantopteris Coal Series indifferent places of South China is not exactly the same and ranges from the late LowerPermian to the close of the epoch,while several elements of the Gigantopteris-Flora,such as Gigantopteris,Pecopteris,Annularia,Lobatannularia and Paracalamites mays...
新的资料证实,这一含煤地层的时代在各地不尽相同,它起自早二叠世晚期——茅口期并一直延续至二叠纪末。对二叠纪古气候所作的概略分析表明,整个二叠纪在华南都是成煤期,只要古地理条件有利,在早二叠世的栖霞期和茅口期以及晚二叠世的龙潭期和长兴期都可以生成煤层。
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This dissertation was focused on the research about the formation and evolution of NQB from the Late Triassic to the early middle Epoch of Jurassic Period, including integrated analyzing the characteristic of the key stratigraphic surfaces, the time of the key stratigraphy, regional rock straigraphy, biostratigraphy and chronostratigraphy, sedimentary system and depositional facies. On basis of these analysis, a tectonic evolution model have been established for NQB during from the Late Triassic to the early middle Epoch of Jurassic Period.1. After the systematic surface analysis about main stratigraphy units, we found that:(1) the bottom of Xiaochaka formation was comformity with the middle Triassic in the basin, and in the north margin it was deposited and overlapped on the different period stratigraphy before Triassic.(2) The top surface of Xiaochaka formation developed regionally karst and paleo-karst breccia, and was uncomformity with Nadigangri Formation, these things suggest that NQB in Xiaochaka depositing stage was developed from middle Triassic basin, and then an extensive regression occurred, the deposition was over and erosion come into being.(3) The lithologic assemblage, geochemistry, mixed fossils, and stratigraphy overlapping characteristic of Quemocuo Formation in early middle Jurassic indicted that the uncomformity surface was an extension-unconformity.2. Integrated analysis about stratigraphy division and correlation indicted that:(1) the paleontologic assemblage of Xiaochaka formation show its time was Carian -Norian stage of late Triassic. According to it was overlapped by late Triassic Nadigangri Formation, so Xiaochaka formation should be Carian - early Norian stage.(2) the SHRIMP Zircon U-Pb age of Nadigangri formation volcanic rocks wear vary form 216 to 205 Ma, so its time should be Norian, but maybe extended into Rhaetian Stage.(3) The age of its bottom volcanic rocks, the fossil assemblages of its middle and upper members and overlapped by lower Jurassic, indicted the age of Riganpeicuo Formation was Norian - Rhaetian stage. And the same time, the volcanic rocks geochemistry of Nadigangri and Riganpeicuo formation both reflected that they wear formed in rift tectonic settings. The lower lithologic and surface characteristic, fossil assemblages and its upper maybe was conformity with lower Jurassic, all reflected that the age of Tumengela Formation in Tumen area should be Norian - Rhaetian stage.
论文对晚三叠世—中侏罗世早期盆地的形成与演化开展了研究,包括关键地层界面特征分析、关键地层时代归属分析、区域岩石地层、生物地层和年代地层的综合对比分析、区域沉积体系与沉积相分析、岩相古地理分析,最终建立晚三叠世—中侏罗世早期羌塘盆沉积—构造动力演化模式。1、系统的对各地层单元的界面分析发现:(1)肖茶卡组底界在盆地内部与中三叠统整合关系,在盆地北缘为沉积超覆于不同时代的前三叠系之上:(2)肖茶卡组顶界面发育古岩溶角砾岩,与上覆那底岗日组为岩溶不整合接触,说明肖茶卡组沉积时期的羌塘盆地是在早中三叠世的盆地基础发展起来的,后期出现了广泛的海退事件,使盆地结束沉积并遭受风化剥蚀作用;(3)中侏罗统雀莫错组的岩性组合特征、岩石化学特征、古生物化石混积和地层的沉积超覆现象均表现出裂陷环境下形成的伸展不整合面的特征。2、综合地层划分与对比分析认为:(1)肖茶卡组古生物化石组合反映其时代为晚三叠世卡尼期—若利期,根据其上被上三叠统那底岗日组不整合覆盖,将其时代厘定为卡尼期—若利期早期;(2)那底岗日组火山岩SHRIMP锆石U-Pb年龄在216~205 Ma之间,其时代主要为若利期,可能包含有瑞替期:(3)日干配错组底部火山岩的年龄、中上部化石组合及其被下侏罗统整合覆盖,综合反映的时代为晚三叠世若利期—瑞替期,而且那底岗日组火山岩和日干配错组火山岩的地球化学成分分析反映两者均为引张构造背景下的产物;土门地区的土门各拉组的下部岩性及界面特征、化石组合和上部可能被下侏罗统整合覆盖,综合反映其时代为若利期—若利期。
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Based on the date of outcrop, log and lithology, sequence stratigraphic division and correlation were made on Neopaleozoic in south of North China Basin, and high-precision geologic correlation framework was built up in the basin.2. In the term of sedimentary features of Neopaleozoic in south of North China Basin, lateral variation of sedimentary facies was studied selectively in Benxi-Taiyuan Formation, Shanxi Formation, Lower Shihezi Formation, Upper Shihezi Formation and Shiqianfeng Formation. Lithofacies paleographic features and the sedimentary evolutionary process of Late Paleozoic in south of North China Basin were worked also.3. On the basis of sand-bodies Isopach figure drawing, the distribution of major reservoir sand-bodies of Neopaleozoic in south of North China Basin was studied. Basing on the distribution of sand-bodies in sequence stratigraphic framework, combining the development and distribution features of barrier and underwater distributary channel, there is a disquisition on the distribution regularity of pay reservoir sand-bodies of Neopaleozoic in this area.
以露头、测井和岩性资料为基础,对华北盆地南部上古生界进行了层序地层的划分与对比工作,建立了盆地范围内的高精度地层对比格架。2、根据华北盆地南部上古生界的沉积特点,按本溪组—太原组、山西组、下石盒子组、上石盒子组和石千峰组5个层组分别开展了沉积相的横向变化对比研究,并以此为基础探讨了华北盆地南部晚古生代的岩相古地理特征及其沉积演化过程。3、以编制砂体等厚图的方式研究了华北盆地南部上古生界主要储集砂体的平面展布规律,并以层序地层格架下的砂体展布研究为基础,从沉积体系控制下的砂体分布特点出发,结合障壁岛与水下分流河道的发育与分布特点,系统深入地开展了区内上古生界有利储集砂体的分布规律研究。
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There are two ways for non-autochthonous palaeogeographic reconstruction: quantitative (for example, based on palaeomagnetic data) and qualitative ones.
非原地的古地理重建可通过定量的(如基于古地磁资料的重建)和定性的两条途径实现。
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This article is on the basis of the predecessors working results. After a thorough and meticulous field geological survey ,it collects a large number of geology information and researches from the regional metallogenic geological background, and focuses on the formation, structure, palaeogeographic environment and mineralization. It describes the nature of the deposit, evolution and the formation of the ancient environment,analysis of the source material,sedimentary environment, advises the genesis point of view and establishes the deposit model,studies the control factors and bauxite ore mineralization, sums up the mineralization law and suggests the favorable prospect of this area.
本文在学习、研究前人各种工作成果的基础上,经过深入细致的野外地质调查,收集大量的地质信息,从区域成矿地质背景研究入手,着重研究了地层、构造、古地理环境与成矿的关系;阐述了西村矿床的性质、演化及其形成时的古环境;分析了成矿物质来源及沉积环境;提出了矿床成因的观点;建立了该矿床成矿模式;研究了控矿因素与铝土成矿关系,总结了矿化富集规律;提出了该区有利的找矿远景。
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Therefore, the discovery of Nanxiong paleontology circles, in order to reveal the mysteries of evolution of the Earth's ancient environment, provides a crucial geographic information, Nanxiong palaeontological layers it has become a treasured Chinese and foreign attention.
因此南雄古生物圈的发现,为揭开地球古环境演化的奥秘提供了具有关键意义的地理资料,南雄古生物层因而也就成为中外瞩目的一块宝地。
- 推荐网络例句
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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.
索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。
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The relationship between communicative competence and grammar teaching should be that of the ends and the means.
交际能力和语法的关系应该是目标与途径的关系。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。