Based on the regional tectonic evolution, combined with the high precision isotopic ages from this paper and other geologists, we have some new acquaintances as follows: 1 There has no Caledonian granite belt distributed in north margin of North China Craton. So, the traditional evolving model of North China Carton, which formed on this idea and the acquaintance about the collision of North China plate and Siberian plate, must be incorrect; 2 The age date show that the earliest magmatic activity began since late-Palaeozoic Permian, which is inconsistent with the previous idea that there were Caledonian and Hercynian active continental margin in the north of North China Craton and in the south Xingkai Massif. 3 the crust and lithosphere were thickened by the subduction and collision of Siberia plate and North China plate during Late Paleozoic. The magma is formed when the crust is heated and melts caused by thickened lithosphere delamination and caused the Asthenosphere upwelling. But only a little basaltic magma erupted, most magma underplate under the bottom of the crust. Thermal energy derived from basaltic magma underplating made the middle and lower crust melt partially and the late Permian-early Triassic granites is formed in large scale.

根據(jù)區(qū)域構(gòu)造演化分析丝袜人妻一区二区三区网站，并結(jié)合本文及他人高精度同位素年齡激情欧美色播，我們對延邊花崗巖形成的大地構(gòu)造環(huán)境有了新的認識：1在華北地臺北緣并不存在所謂的加里東花崗巖帶人人操人人干av，因此亚洲资源一区二区在线观看，建立在此之上的傳統(tǒng)的華北地臺北緣演化模式及有關(guān)西伯利亞板塊與華北板塊的碰撞拼合的認識也必然是不正確的青草线观看免费观看视频；2華北地臺北緣和興凱地塊南緣不存在加里東期和海西期花崗巖帶美国一级A片AAA欧美，表明兩地塊邊緣最早的花崗質(zhì)巖漿活動始于晚古生代的二疊紀，即不存在傳統(tǒng)觀點所認為的加里東期或海西期活動陸緣丰满美女视频一区二区三；3晚古生代由于西伯利亞板塊與華北板塊的俯沖碰撞日韩一级黄色视频在线观看91，致使地殼和巖石圈增厚，導(dǎo)致加厚巖石圈發(fā)生拆沉作用欧美性爱在性，使得軟流圈上涌久久综合色之，加熱地殼使之熔融形成巖漿，但玄武質(zhì)巖漿少量噴出地表www.日本子..com精品，大部分底侵于地殼底部在线播放欧美9797影院，形成下地殼高密度的玄武質(zhì)底侵層，玄武質(zhì)巖漿底侵的熱能引起中下地殼廣泛部分熔融中文字幕一级毛片在线，形成大面積分布的晚二疊世—早三疊世花崗巖国产真实乱子精品视频。

High-Na andesites ; adakite ; melting of alkali-rich basaltic underplate ; Jiangxi province

高鈉安山巖；埃達克巖女子一级裸体毛片高清视频网站；富堿玄武巖熔融久久青春国产精品毛片；底侵作用；江西

underplate：底座,底板

under pan 底盤 | underplate 底座,底板 | under pressure 減壓,抽空

underplate：基礎(chǔ);基座;底板

underpile hopper 煤堆下料斗 | underplate 基礎(chǔ),基座,底板 | underspeed switchs 低速開關(guān)

underplate：底鍍層

Undercut, Undercutting側(cè)蝕. | Underplate底鍍層. | Universal Tester汛用型電測機.

underplate：底板

underplants /下植木/ | underplate /底板/ | underplay /扣著大牌不出而出小牌/對...輕描淡寫/