Natural stone test methods . determination of resistance to salt crystallisation 天然石材的試驗(yàn)方法.耐鹽結(jié)晶作用的測(cè)定
In the early stage when the tiny spherical phases are smaller than micron scale , they collide and merge violently , therefore , they develop rapidly and are difficult to be preserved 在早期,數(shù)十微米級(jí)以下細(xì)小的不混溶球體相互相碰撞合并作用劇烈,生長(zhǎng)迅速,正因?yàn)槿绱?,以及巖漿結(jié)晶作用影響,這種球體相一般難以保存下來。
The mineralogical characteristics suggest that different rock types of kuzigan intrusion are products of the same magma , and that the magma , instead of being affected much by fractional crystallization , has dominantly experienced equilibrating crystallization 研究表明,苦子干巖體中的不同巖石類型系同源巖漿演化的產(chǎn)物;巖漿在整個(gè)演化過程中平衡結(jié)晶作用占主導(dǎo),分離結(jié)晶作用的影響極小。
The qiongzhong and danxian batholiths , as the largest early mesozoic syntectonic granite intrusions in hainan island , are mainly composed of porphyritic biotite two - feldspars granitoids , in which alkali - feldspar phenocrysts and dark minerals are foliated mostly in we - direction . the granites are of metaluminous i - type . major and trace elements show co - variations with sio2 , suggesting the fractional crystallization of plagioclase , hornblende , apatite and ti - fe oxides in the evolution of the granites 花崗巖的主量元素和部分微量元素成分與sio _ 2呈良好的相關(guān)關(guān)系,顯示出明顯的斜長(zhǎng)石、角閃石、磷灰石和ti - fe氧化物等的分離結(jié)晶作用,總體上它們與大陸島弧花崗巖的微量元素豐度和分布特征相似,系統(tǒng)地虧損ba 、 nb 、 sr 、 p和ti等元素。
During diagenetic process , there may exist the fractional crystallization of clino - pyroxene , plagioclase , olivine and ti - fe oxide , and the accumulation of olivine . the alkalic - ultramafic dikes formed by low degree partial melting ( 3 . 4 % ) of enriched mantle , consist of single olivine pyroxenolite , the dominating olivine fractionation is evident 成因上為富集地幔部分熔融作用的結(jié)果,但在成巖過程中也可能存在單斜輝石、斜長(zhǎng)石、橄欖石和ti - fe氧化物等礦物的分離結(jié)晶作用。