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In a conclusion, there were a considerable proportion of relict and remnant elements which can be traced back to Mesozoic, and even Paleozoic, as well as typical ancient endemism. All of these fully showed evolutionary conservatism and phylogenetic antiquity of the Alsophila spinulosa community during the process of vegetation evolution.

由此可见,桫椤群落区系组成与起源年代都十分古老;与桫椤伴生的成分中存在较大比例的中生代甚至古生代的古老遗存物种,也明显表现出其在植被进化中的保守性和种系发生的古老性。

New data of structural styles and geochronometry in the Dulong-Song Chay metamorphic dome indicate at least two epoches of major extensional tectonics: the D, deformation of the rising and exhumation of the dome occurred at 237-228 Ma; and the D2 deformation overprinted and re-deformed on the dome at 86-78 Ma. Of them, the D, deformation shows a consistent forming time, extensional direction and tectonic regime amongst the Dulong-Song Chay dome, South China block and the north margin of the South China Sea basin.

对位于华南地块西南缘的都龙-Song Chay变质穹隆体的研究表明,在中生代至新生代时期,至少经历了2期重要的伸展构造:D1期(237~228 Ma)穹隆的隆升与表露阶段,代表了印支期造山作用前的伸展构造;D2期(86~78 Ma)叠加和改造阶段,并有可能始于176~146 Ma,致使穹隆进一步隆升和表露。D2期构造在发育时间、伸展方向及变形方式等上既与华南地块同时期区域伸展构造特征相一致,也与南海盆地北缘早期扩张特征相一致。

Himalaya, which formed on the basement of the Pan-African orogenic event at about 550 Ma BP and experienced Ordovician to Devonian platform sedimentation, was transformed into to a back-arc extensional-rifted zone at the end of the Carboniferous. The Yarlung Zangbo ophiolitic mélange zone is a Mesozoic back-arc spreading basin corresponding to the Gangdise paleo-island arc zone on the south side of the Tethyan Ocean. The Gangdise zone experienced island-arc orogeny in the Late Paleozoic. The very significant differences in geology on both sides of the Bangong Co-Nujiang suture zone suggest that the suture zone is not only the northern boundary of Gondwanaland and the boundary between the Indian (Yunnan-Tibet) stratigraphic realm and the South China (Qiangtang-Sanjiang) stratigraphic realm, but also the relics of subductional collision and final extinction of the Phanerozoic Tethyan Ocean after the breakup of the Neoproterozoic supercontinent Rodinia. The basic point of study of the collisional orogenic processes of the plateau is the structure and composition of the archipelagic arc-basin tectonic realm of three different stages bounded by three rigid paleocontinental blocks (Gondwanaland, Laurasia and Pan-Cathaysian) and the mutual constraining, transformation and coupling of various material movement forms.

喜马拉雅奠基于5.5亿年左右的泛非造山事件基底上,历经奥陶纪至泥盆纪台地沉积,并于石炭纪末转化为印度板块北缘的弧后伸展裂陷带;雅鲁藏布江蛇绿混杂岩带曾是特提斯大洋南侧与冈底斯古岛弧带相对应的中生代弧后扩张盆地;冈底斯带曾经历了晚古生代岛弧造山作用;班公湖-怒江带两侧大量地质特征重大差异表明,班公湖-怒江带是冈瓦纳大陆北界,是印度地层区和华南地层区的分界,是新元古代Rodinia超大陆解体后显生宙特提斯大洋俯冲,消减,碰撞,最后消亡的遗迹。

Except for HIMU-type OIB with negativeΔ7/4 ratios in the Wandashan massif, all other rocks have positiveΔ7/4 andΔ8/4 values, a feature of the Laurasia continent in the Northern Hemisphere.2 In the southern Hinggan Mountains distributes a Cretaceous felsic igneous rock belt characterized by highly positive-ε_ T_(DM = 0.42~0.64Ga,ε_ =+4.0~+5.9 and radiogenic Pb ~(206Pb/~(204)Pb = 18.36 ~ 18.56 isotope compositions.

除完达山外来拼贴地体的HIMU型OIB具有负的△7/4值,东北地区中生代火成岩都为正的△7/4和△8/4值,显示出亲北方劳亚大陆的岩石圈属性。2在大兴安岭南区林西-霍林河地区存在一条近似平行索伦-贺根山-小兴安岭古缝合带的高ε_早白垩世中酸性火山岩组合。

The compressing from the completed collision of Indian plate and Eurasia plate made TienShan mountain, KunLun mountain and Pamir rose rapidly and complicatedly, including fault rising and strike slip lineament mountain building.

受印度板块与欧亚大陆碰撞挤压的影响,中生代期间被夷平的古天山、西昆仑-帕米尔快速隆升,并发生复杂的变形,变形包括冲断隆升和走滑造山,天山的地壳缩短量具有从中部向东西两侧减小的特点。

The petrochemistry and geochemistry of Mesozoic volcanic rocks mainly indicate the environmental characteristic of distending structure which bears on orogenic belt. The process of the evolution that earth crust keeps thinning reflects that it is still in the time of extruding orogenesis. Only during the intermittence or relaxation stages of extruding orogenesis, the volcanic eruption of neutral rock and acidic rock were formed in the situation of relative distending structure.

中生代火山岩的岩石化学、地球化学特点,主要显示了与造山带有关的拉张构造环境特征,而地壳由薄变厚的演化过程,则反映了该时期仍以挤压造山作用为主,只是在挤压造山作用的间歇或松驰阶段,相对处于拉张构造环境的情况下,形成了中酸性岩的火山喷发。

The study on fossil Orthoptera is of great importance for the further progress in the proper understanding of the origin of Orthoptera, the coevolution between insects and plants, the changes of paleoclimate, etc.

直翅目化石的研究对昆虫的起源、昆虫与植物的协同演化及古气候的演变等研究提供线索。中国已发现的直翅目化石主要分布于辽、冀、内蒙古三省区,其地质时代大部分为中生代。

During these events, the potassic volcanic rocks of Oulituozi were produced during extension stage of the rift with subsequent fractional crystallization and derived from basaltic magma. The genesis of the volcanic rocks possibly had a close relation with partial melting of the subducted slab of Pacific Plate oceanic crust.

欧利坨子富钾质火山岩的形成是裂谷期岩石圈伸展作用的产物,是玄武质岩浆经过大比例分离结晶作用的产物,可能与晚中生代太平洋板块俯冲残片的部分熔融有密切关系。

Early Mesozoic: The accretion of thickness of continental lithosphere in eastern part of North China block took place because Yangzi block subducted beneath North China block in NW direction in early Mesozoic.

中生代早期:因扬子地块向北西方向俯冲,造成了华北地块东部大陆岩石圈曾存在一次重要的加厚过程,随之而来的是俯冲板片的断离和岩石圈根的拆沉。

The relationship between the pluton and structures around it indicates that the earlier magma in Mesozoic in the northern margin of the North China craton formed in a cratonic reactivation stage, which is a relatively static stage from compression deformation period to a stable period.

岩体及同缘构造的相互关系表明,华北克拉通北缘地区的中生代早期岩浆形成于强烈的克拉通活化后一个由挤压变形向相对平静期转化的阶段。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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