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海底沉睡着巨量甲烷

生态经济 2003年第7期19卷 36-37页

作者：郭可

近年来，越来越多的专家注意到大洋深处“可以燃烧的冰”——水合甲烷。由于甲烷是温室气体，一些科学家担心它被释放出来后加重全球变暖的趋势；还有科学家猜测它可能是引发海底坍塌滑坡的“罪魁祸首”。然而更多人认为，以水合物形式... 详细信息

近年来，越来越多的专家注意到大洋深处“可以燃烧的冰”——水合甲烷。由于甲烷是温室气体，一些科学家担心它被释放出来后加重全球变暖的趋势；还有科学家猜测它可能是引发海底坍塌滑坡的“罪魁祸首”。然而更多人认为，以水合物形式“沉睡”在海底的巨量甲烷，可能是未来人类社会的能源宝库。……

关键词：水合甲烷海底天然气资源厌氧微生物钻探地质运动火山喷发洋流

用诗的特质构造小说——余易木《春雪》的美学意蕴

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青海民族大学学报（社会科学版） 1990年第3期26卷 64-69页

作者：冯毅

小说已不满足于“客观地再现生活的本质”这一艺术层次了。主体意识的加强,无疑使小说创作愈多表现色彩,再现与表现的层叠、交合,如同地质运动的大陆板块碰撞、叠压一样,两者的合力,将隆起一座座新的艺术高峰。重再现的小说与重表现的... 详细信息

小说已不满足于“客观地再现生活的本质”这一艺术层次了。主体意识的加强,无疑使小说创作愈多表现色彩,再现与表现的层叠、交合,如同地质运动的大陆板块碰撞、叠压一样,两者的合力,将隆起一座座新的艺术高峰。重再现的小说与重表现的诗的互相渗透、融合,使小说向着一个更高的美学层次冲击,使之获得丰富的美文学的品质。《春雪》无论如何不是一篇讲故事的小说。传统的小说观念中的事件、情节等很难在这里找到。甚至可以说它连人物性格也无意刻划,就那么一个场景,那么短短的时间(严格地说是几小时)。借这场景,借这时间流程,将心灵世界中的那一束特殊的感情信息释放了出来。

关键词：余易木春雪美学意蕴地质运动时间流程板块碰撞自然天成时代色彩座座委婉细腻

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“青藏高原及其周缘地热资源”专辑序

沉积与特提斯地质 2023年第2期43卷 I0001-I0002页

作者：多吉张云辉李晓不详

地热能是一种绿色低碳的可再生能源,具有储量丰富、分布较广、稳定可靠的特点,被广泛用于发电、供暖、农业和工业利用等多种领域。开发利用地热能对调整能源结构、节能减排具有重要意义,也是实现碳达峰碳中和、构建绿色低碳安全高效能... 详细信息

地热能是一种绿色低碳的可再生能源,具有储量丰富、分布较广、稳定可靠的特点,被广泛用于发电、供暖、农业和工业利用等多种领域。开发利用地热能对调整能源结构、节能减排具有重要意义,也是实现碳达峰碳中和、构建绿色低碳安全高效能源体系的重要抓手。青藏高原位于亚欧板块与印度板块交界处,地质运动活跃,活动构造发育,是地热能重要的储备和开发基地。

关键词：可再生能源地质运动亚欧板块地热能地热资源节能减排碳中和绿色低碳

西非与南美东部的关联盆地的对比——基于构地质学和地层学的分析

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西非与南美东部的关联盆地的对比——基于构地质学和地层学的分析

作者： Ahmed Suhail 浙江大学

学位级别：硕士

In this work, the main evidence and conclusions regarding the geological links between the basins of South American margin （Espirito Santos basin, Pelotas basin ＆ Colorado basin） with the conjugate margin of Western African （Kwanza basin, Walvis basin ＆ Orange basin） Many research works have been done in both margins of South Atlantic and Western African like sedimentation history and tectonic evolution. However, there are some cognition needs to be unified, and some geologic problems need to be further researched, such as the deposition of salt, extension of the basin, and the sedimentation history along the comparative *** basins were formed during the breakup of Gondwana, while the South Atlantic Ocean started to open during the Late Cretaceous at ca.131.7Ma, the sedimentation history between the Late Jurassic and present are broadly similar on both margins, where these basins are filled with the Cretaceous, Tertiary and the Quaternary sediments. However, the sediment of the Late Jurassic only deposit at Colorado basin in South American margin and at Kwanza basin and Orange basin in Western African margin. Sedimentation proceeded from the deposition of continental pre- and syn-rift facies, through syn-rift lacustrine, the turbiditic and transgressive shales, to shallow marine carbonates and evaporitic units before the deposition of a post rift marine transgressive and regressive *** the opening of the South Atlantic Ocean there were some major events （i.e, the Parana ＆ Etendeka volcanic plume, salt deposition before the opening of South Atlantic）, these events at these two margins could be well matched. Tectonically, South Atlantic Ocean are divided into four major segments from South to North:the Falkland segment, the South segment, the Central segment and the Equatorial segment. South Atlantic Ocean contains two kinds of passive margins which are the thick crust volcanic margin and the thin-crust non-volcanic margin. The volcanic passive ma

关键词：盆地地质运动板块构造南大西洋西非地区南美地区

Making continental crust:The sanukitoid connection

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Chinese Science Bulletin 2008年第11期53卷 1620-1633页

作者： Yoshiyuki TATSUMI Institute for Research on Earth Evolution (IFREE) Japan Agency for Marine-Earth Science and Technology (JAMSTEC) Yokosuka 237-0061 Japan

The average continental crust possesses intermediate compositions that typify arc magmatism and as a result it is believed to have been created at ancient convergent plate boundaries. One possible mechanism for intermediate continental crust formation is the direct production of andesitic melts in the upper mantle. Sanukitoids, which characterize the Setouchi volcanic belt, SW Japan, include un-usually high-Mg andesites (HMA). They were generated by slab melting and subsequent melt-mantle interactions under unusual tectonic settings such as where warm lithosphere subducts into hot upper mantle. Such conditions would have existed in the Archean. Hydrous HMA magmas are likely to have solidified within the crust to form HMA plutons, which were then remelted to produce differentiated sanukitoids. At present, generation and differentiation of HMA magmas may be taking place in the Izu-Bonin-Mariana arc-trench system (IBM), because (1) HMA magmatism characterizes the initial stages of the IBM evolution and (2) the IBM middle crust exhibits Vp identical to that of the bulk conti-nental crust. Vp estimates for plutonic rocks with HMA compositions support this. However tonalitic composition for middle-crust-forming rocks cannot be ruled out, suggesting an alternative possibility that the continental crust has been created by differentiation of mantle-derived basaltic magmas.

关键词：赞岐状岩大陆壳地质学地质运动

The geological characteristics of oceanic-type UHP metamorphic belts and their tectonic implications: Case studies from Southwest Tianshan and North Qaidam in NW China

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Chinese Science Bulletin 2008年第20期53卷 3120-3130页

作者： ZHANG LiFei LU Zeng ZHANG GuiBin SONG ShuGuang MOE Key Laboratory of Orogenic Belt and Crustal Evolution School of Earth and Space Sciences Peking University Beijing 100871 China

The geological characteristics of ultrahigh-pressure (UHP) metamorphic belts formed by deep subduction of oceanic crust are summarized in this paper. Oceanic-type UHP metamorphic belt is characterized by its protolithic assemblage of typical oceanic crust, the peak metamorphic temperature <600℃, P-T path undergoing blueschist facies during prograde and retrograde metamorphic evolution, respectively, with low geothermal gradient of cold subduction. The further study of oceanic-type UHP metamorphic belt is very significant for constructing metamorphic reaction series of cold subduction zone, for understanding how aqueous fluids were transported into deep mantle and for classifying the types of UHP metamorphism in cold subduction zone. The uplift and exhumation mechanism of oceanic UHP metamorphic rocks is one of the most challenging problems in the study of UHP metamorphism, which is very important for understanding the geodynamic mechanism of solid Earth. As a traveler subducted into the mantle depth and then uplifted to the surface, oceanic-type UHP metamorphic belts witness the bulk process from the subduction to exhumation and is an ideal target to study the geochemical behavior and cycling of elements in subduction zones. The tectonic evolution of one convergent orogenic belt can be usually divided into two stages of oceanic subduction and followed continental subduction and collision, and the two best-established examples of orogenic belts are Alps and Himalaya. Therefore, the study of oceanic-type UHP metamorphic belt is the frontier of the current plate tectonic theory. As two case studies, the current status and existing problems of oceanic-type UHP metamorphic belts in Southwest Tianshan and North Qaidam, NW China, are reviewed in this paper.

关键词：地质运动超高压变质带潜没地带天山中国

Detachment within subducted continental crust and multi-slice successive exhumation of ultrahigh-pressure metamorphic rocks: Evidence from the Dabie-Sulu orogenic belt

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Chinese Science Bulletin 2008年第20期53卷 3105-3119页

作者： LIU YiCan LI ShuGuang CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China

Although tectonic models were presented for exhumation of ultrahigh-pressure (UHP) metamorphic rocks during the continental collision, there is increasing evidence for the decoupling between crustal slices at various depths within deeply subducted continental crust. This lends support to the multi-slice successive exhumation model of the UHP metamorphic rocks in the Dabie-Sulu orogen. The available evidence is summarized as follows: (1) the low-grade metamorphic slices, which have geotectonic affinity to the South China Block and part of them records the Triassic metamorphism, occur in the northern margin of the Dabie-Sulu UHP metamorphic zone, suggesting decoupling of the upper crust from the underlying basement during the initial stages of continental subduction; (2) the Dabie and Sulu HP to UHP metamorphic zones comprise several HP to UHP slices, which have an increased trend of metamorphic grade from south to north but a decreased trend of peak metamorphic ages correspondingly; and (3) the Chinese Continental Science Drilling (CCSD) project at Donghai in the Sulu orogen reveals that the UHP metamorphic zone is composed of several stacked slices, which display distinctive high and low radiogenic Pb from upper to lower parts in the profile, suggesting that these UHP crustal slices were derived from the subducted upper and middle crusts, respectively. Detachment surfaces within the deeply subducted crust may occur either along an ancient fault as a channel of fluid flow, which resulted in weakening of mechanic strength of the rocks adjacent to the fault due to fluid-rock interaction, or along the low-viscosity zones which resulted from variations of geotherms and lithospheric compositions at different depths. The multi-slice successive exhumation model is different from the traditional exhumation model of the UHP metamorphic rocks in that the latter assumes the detachment of the entire subducted continental crust from the underlying mantle lithosphere and its subse

关键词：大陆潜没地质运动地壳运动超高压变质作用变质岩

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西山昆明的脊梁

云南画报 2006年第6期 74-83页

作者：李雨霖

诗人于坚把西山冠以伟大而苍凉的名头,他说:“在昆明历史上,这是一个采天地间浩然之气,与宇宙万物交谈,孕育雄心壮志的地方。”汉章帝年间,有金马碧鸡现南中,“金马骋光之绝影,碧鸡倏忽而耀仪”,大汉皇帝高兴之下,派大臣王褒前往寻找,... 详细信息

诗人于坚把西山冠以伟大而苍凉的名头,他说:“在昆明历史上,这是一个采天地间浩然之气,与宇宙万物交谈,孕育雄心壮志的地方。”汉章帝年间,有金马碧鸡现南中,“金马骋光之绝影,碧鸡倏忽而耀仪”,大汉皇帝高兴之下,派大臣王褒前往寻找,却没有找到,只留下了一篇《金马碧鸡颂》,其中说:金马碧鸡“处之南荒,深溪回谷,非土非乡”,而中原却是“汉德无疆,广乎唐虞,泽配三皇,黄龙见兮白虎仁”,说南方荒芜,不是久留之地,希望金马碧鸡之神,快点离开那里,来到国都。可惜的是金马碧鸡并没有遵从皇帝的旨意,而是选择了昆明,选择了美丽的滇池,化作了金马山和碧鸡山。“东骧神骏,西翥灵仪”,碧鸡山在滇池的西面,就被称为了西山,只是不知道为什么没有人把金马山称为东山。我想如果昆明也有神山圣湖的话,西山与滇池一定榜上有名。其实在昆明人的内心世界里,西山就是一座神圣的山,昆明人在城中建金马碧鸡牌坊,而城外东有金马寺,西有碧鸡寺。相对于东边的金马山来说,西山拥有更多成为神山的条件。300万年前的一次地质运动,大地形成了高山和湖泊,西山就是一堵巨大的濒临滇池的玄武岩绝壁,形成了登高山兮临碧海的壮观景象,仿佛自有天地以来就共生共存;在昆明人的视野里,最高大的山脉就是西山,站在城里大多数的地方都能望见,美人临碧波。

关键词：金马碧鸡汉章帝金马寺地质运动于坚登高山华亭寺太华寺深溪昆明地区

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板块构造学说的认识论意义

哲学研究 1978年第10期 33-41页

作者：尹赞勋王维

地质学是一门研究地球自然历史的科学。它着重研究地质事物在时空中发生、发展和演化的过程。作为地质学一个分支的大地构造地质学,是专门研究地球表层构造运动的历史的(关于地球表层的概念,过去仅指地壳,现在包括上地幔的顶部,二者合... 详细信息

地质学是一门研究地球自然历史的科学。它着重研究地质事物在时空中发生、发展和演化的过程。作为地质学一个分支的大地构造地质学,是专门研究地球表层构造运动的历史的(关于地球表层的概念,过去仅指地壳,现在包括上地幔的顶部,二者合称为岩石圈)。从最近二百年的地质学发展历史来看,大地构造地质学是地质学中最活跃、最吸引人、学派最多、假说繁杂、争论尖锐的一个分支学科。人类对于地质构造运动的认识,同生产实践和科学实验有着非常密切的关系。人们的地质实践和实验,是人类对于地球的物质结构和运动形态认

关键词：板块学说海底地质科学板块俯冲地质运动海洋地质大陆漂移说大地构造学地球构造学地球运动地质时期地史时期地质现象岩石圈构造圈认识论辩证唯物主义