High-temperature(HT, >850℃) metamorphism in continental collision orogens, particularly for those ultrahigh-pressure(UHP) metamorphic rocks, has become one of the remarkable topics in Earth science. It has bearing...High-temperature(HT, >850℃) metamorphism in continental collision orogens, particularly for those ultrahigh-pressure(UHP) metamorphic rocks, has become one of the remarkable topics in Earth science. It has bearing on the element and isotope behaviors of UHP rocks, their partial melting and related geodynamic effects during exhumation. In this paper, five representative continental collision orogens with typical HT/UHP rocks, including the Dabie orogen in China, the Kokchetav in Kazakhstan, the Caledonides in Greenland, the Rhodope in Greece, and the Erzgebirge in Germany are introduced, and their HT/UHP metamorphism and evolution processes are summarized. In addition, metamorphic P-T-t paths, multistage exhumation processes, and partial melting and preservation and retrogression of UHP index minerals during exhumation and their possible mechanisms are discussed. On this basis, the forthcoming key fields and scientific subjects of HT/UHP rocks within continental subduction channel are proposed.展开更多
With the advent of high-T<sub>C</sub> superconducting（HTS）materials whose superconducingtransform temperature supasses 77K which is the boiling temperature of LN<sub>2</sub>,the high tideof r...With the advent of high-T<sub>C</sub> superconducting（HTS）materials whose superconducingtransform temperature supasses 77K which is the boiling temperature of LN<sub>2</sub>,the high tideof research of HTS materials comes along in order to develop the HTS materials withhigher superconducting critical temperatures,less surfaced resistances at microwavefrequencies,and stabler superconducting properties.Through great efforts of展开更多
I. INTRODUCTION Since the discovery of superconductivity above 40 K in the La-Ba-Cu-O system andabove 90 K in Y-Ba-Cu-O oxides, tremendous effort has been made to study the properties of high-T_c superconducting thin ...I. INTRODUCTION Since the discovery of superconductivity above 40 K in the La-Ba-Cu-O system andabove 90 K in Y-Ba-Cu-O oxides, tremendous effort has been made to study the properties of high-T_c superconducting thin films. For the preparation of superconducting films two main techniques, the e-beam evaporation and sputtering, have been used. The processes展开更多
基金supported by the National Basic Research Program of China(Grant No.2015CB856104)the National Natural Science Foundation of China(Grant No.41273036)
文摘High-temperature(HT, >850℃) metamorphism in continental collision orogens, particularly for those ultrahigh-pressure(UHP) metamorphic rocks, has become one of the remarkable topics in Earth science. It has bearing on the element and isotope behaviors of UHP rocks, their partial melting and related geodynamic effects during exhumation. In this paper, five representative continental collision orogens with typical HT/UHP rocks, including the Dabie orogen in China, the Kokchetav in Kazakhstan, the Caledonides in Greenland, the Rhodope in Greece, and the Erzgebirge in Germany are introduced, and their HT/UHP metamorphism and evolution processes are summarized. In addition, metamorphic P-T-t paths, multistage exhumation processes, and partial melting and preservation and retrogression of UHP index minerals during exhumation and their possible mechanisms are discussed. On this basis, the forthcoming key fields and scientific subjects of HT/UHP rocks within continental subduction channel are proposed.
基金Project supported by the Research and Development Center of National Superconducting Technology.
文摘With the advent of high-T<sub>C</sub> superconducting（HTS）materials whose superconducingtransform temperature supasses 77K which is the boiling temperature of LN<sub>2</sub>,the high tideof research of HTS materials comes along in order to develop the HTS materials withhigher superconducting critical temperatures,less surfaced resistances at microwavefrequencies,and stabler superconducting properties.Through great efforts of
基金Project supported by the National Center for Research and Development on Superconductivity and the Sci ence Foundation of Academia Sinica
文摘I. INTRODUCTION Since the discovery of superconductivity above 40 K in the La-Ba-Cu-O system andabove 90 K in Y-Ba-Cu-O oxides, tremendous effort has been made to study the properties of high-T_c superconducting thin films. For the preparation of superconducting films two main techniques, the e-beam evaporation and sputtering, have been used. The processes
