台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0...台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0 cm , 与当地主栽树种杉木速丰林生长速度相仿。秃杉和台湾杉在遂昌县引种已取得初步成功。表2展开更多
The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial mi...The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial migmatization, which is covered by Upper Jurassic and Lower Cretaceous volcanic rock system and cut by acidic igneous veins of Jurassic and Cretaceous. The conclusions are as follows: (1) The ore-forming fluid is defined as superhigh tectonic-metamorphic fluid on the base of : 1 (D)-(18O) values 2 fluid inclusions;3 trace elements of pyrite from ores. (2) The shear zone silicified orebod-ies occurred in proterozoic, Jurassic and Cretaceous, which have been transforms in part by ore-bearing comb quartz vein of volcanism.展开更多
文摘台湾杉属的秃杉和台湾杉是我国特有的珍稀树种。1992 ～1993 年在浙江省遂昌县对二树种进行了引种造林试验。结果表明, 二树种速生, 适应性良好。秃杉6年生平均树高达3-61 m , 地径8-4 cm ; 台湾杉5 年生平均树高达2-54 m , 平均地径5-0 cm , 与当地主栽树种杉木速丰林生长速度相仿。秃杉和台湾杉在遂昌县引种已取得初步成功。表2
基金Chinese Gold Management. Office (No.93-45-33) and Zhejiag Metallurgical (No. 98-27).
文摘The Suichang mine is the largest silicified vein-type silver-gold mineralization system in Southeast China, whose ore bodies are controlled by shear zones developing in Lower Proterozoic gneiss terrene with initial migmatization, which is covered by Upper Jurassic and Lower Cretaceous volcanic rock system and cut by acidic igneous veins of Jurassic and Cretaceous. The conclusions are as follows: (1) The ore-forming fluid is defined as superhigh tectonic-metamorphic fluid on the base of : 1 (D)-(18O) values 2 fluid inclusions;3 trace elements of pyrite from ores. (2) The shear zone silicified orebod-ies occurred in proterozoic, Jurassic and Cretaceous, which have been transforms in part by ore-bearing comb quartz vein of volcanism.
