Asthemaintectoniccomponentofthe Himalayan–Tibetan orogen,the Lhasa terrane has received much attention as it records the entire history of the orogeny.The occurrence of high pressure eclogite in the Sumdo complex in ...Asthemaintectoniccomponentofthe Himalayan–Tibetan orogen,the Lhasa terrane has received much attention as it records the entire history of the orogeny.The occurrence of high pressure eclogite in the Sumdo complex in central Lhasa terrane has a significant importance on the understanding of the Paleo-Tethys subduction and plate itineration processes in this area.The petrological,geochemical and geochronological data of eclogite and associated blueschist and garnet-bearing mica schist from Sumdo,Jilang and Bailang area have been briefly reviewed to explore the origin and metamorphic evolution of this suture.Eclogites from the Sumdo complex have experienced low temperature,high pressure to ultrahigh pressure metamorphism,revealing a fastsubduction and exhumation process in a typical oceanic subduction zone.The large P-T range between different eclogites in the literature may be affected by the big error of unappropriated using geothermobarometry and may also because of slices of subducted blocks derived from different depths juxtapose together during exhumation.By summarizing the U-Pb,Lu-Hf and Sm-Nd ages of eclogites,the eclogite facies metamorphism is likely to occur in early Triassic during 245-225 Ma,but not the previously accepted late Permian at ca.260 Ma by the reinterpretation of the former geochronological data from literature.The opening of Paleo-Tethys Ocean between the Lhasa terrane initiate prior to ca.280 Ma and ultimate closure to integrate the Lhasa terrane was no earlier than225 Ma and may triggered by the initial subduction of Bangong-Nujiang Tethys Ocean in the north.展开更多
The value concept of building a community with a shared future for mankind, posed and profoundly expounded by contemporary Chinese government leaders, offers an in-depth insight into the development trend of the world...The value concept of building a community with a shared future for mankind, posed and profoundly expounded by contemporary Chinese government leaders, offers an in-depth insight into the development trend of the world today and a fundamental solution to various global crises. It reveals the highly interdependent relationships between people and between nations, where they share the same benefits and risks against the backdrop of globalization, informatization and network civilization, asks for the withdrawal of existing egoism that disregards others' legitimate interests and the zero-sum bias that views one's gain as another's loss, while building a harmonious world featuring harmonious co-existence, common development and lasting peace. The value concept of building a community with a shared future for mankind is highly and profoundly significant for the creative evolution of ethics, not only laying a foundation in terms of values for a healthy, just and sensible global ethic and injecting the spirit of pursuing equal and win-win cooperation into international relations, but also providing theoretical support for an inclusive human ethical civilization that consists of mutual learning and harmonious co-existence of different ideas, accentuating the guiding idea of "devote your mind to heaven and earth, devote your life to the people; succeed the wisdom of the past sages; create peace for ten thousand generations."展开更多
文摘Asthemaintectoniccomponentofthe Himalayan–Tibetan orogen,the Lhasa terrane has received much attention as it records the entire history of the orogeny.The occurrence of high pressure eclogite in the Sumdo complex in central Lhasa terrane has a significant importance on the understanding of the Paleo-Tethys subduction and plate itineration processes in this area.The petrological,geochemical and geochronological data of eclogite and associated blueschist and garnet-bearing mica schist from Sumdo,Jilang and Bailang area have been briefly reviewed to explore the origin and metamorphic evolution of this suture.Eclogites from the Sumdo complex have experienced low temperature,high pressure to ultrahigh pressure metamorphism,revealing a fastsubduction and exhumation process in a typical oceanic subduction zone.The large P-T range between different eclogites in the literature may be affected by the big error of unappropriated using geothermobarometry and may also because of slices of subducted blocks derived from different depths juxtapose together during exhumation.By summarizing the U-Pb,Lu-Hf and Sm-Nd ages of eclogites,the eclogite facies metamorphism is likely to occur in early Triassic during 245-225 Ma,but not the previously accepted late Permian at ca.260 Ma by the reinterpretation of the former geochronological data from literature.The opening of Paleo-Tethys Ocean between the Lhasa terrane initiate prior to ca.280 Ma and ultimate closure to integrate the Lhasa terrane was no earlier than225 Ma and may triggered by the initial subduction of Bangong-Nujiang Tethys Ocean in the north.
基金an outcome of the major philosophy and social science project"Studies on Major Theoretical and Practical Issues Concerning Patriotism Promotion Under New Circumstances"undertaken by the Ministry of Education(16GZD007)
文摘The value concept of building a community with a shared future for mankind, posed and profoundly expounded by contemporary Chinese government leaders, offers an in-depth insight into the development trend of the world today and a fundamental solution to various global crises. It reveals the highly interdependent relationships between people and between nations, where they share the same benefits and risks against the backdrop of globalization, informatization and network civilization, asks for the withdrawal of existing egoism that disregards others' legitimate interests and the zero-sum bias that views one's gain as another's loss, while building a harmonious world featuring harmonious co-existence, common development and lasting peace. The value concept of building a community with a shared future for mankind is highly and profoundly significant for the creative evolution of ethics, not only laying a foundation in terms of values for a healthy, just and sensible global ethic and injecting the spirit of pursuing equal and win-win cooperation into international relations, but also providing theoretical support for an inclusive human ethical civilization that consists of mutual learning and harmonious co-existence of different ideas, accentuating the guiding idea of "devote your mind to heaven and earth, devote your life to the people; succeed the wisdom of the past sages; create peace for ten thousand generations."
