CAJ | 학술논문

报道了南海表层沉积物中铂族元素的丰度及其分布特征.52个表层沉积物中铂族元素(PGE)含量变化范围:钌为0.40×10-9～3.20×10-9,平均值为1.20×10-9;钯为0.01×10-9～13.30×10-9,平均值为4.31×10-9;铱为0.59×10-9～4.49×10-9,平均值为1.21×10-9;铂为1.27×10-9～16.21×10-9,平均值为5.26×10-9;铑为0.05×10-9～0.2×10-9,平均值为0.12×10-9;金为0.43×10-9～27.38×10-9,平均值为6.92×10-9.尽管PGE含量与沉积物平均粒径的关系不是很明显,但是整体上随平均粒径的增大,PGE含量出现逐渐减少的趋势,表现出一定的粒度控制规律.南海全海域表层沉积物铂、钯、钌、铑、铱和金的估算背景值分别为1.168×10-9±0.190×10-9,3.228×10-9±0.403×10-9,1.085×10-9±0.189×10-9,4.432×10-9±0.258×10-9,0.123×10-9±0.023×10-9和4.720×10-9±0.413×10-9,远高于我国大陆东部地壳的,而与深海沉积物的基本处于同一水平,表现出了海洋沉积物富集PGE的固有特征.尽管PGE在大陆架区有所富集,但明显富集区主要分布在吕宋岛以西至中央海盆区域,指示海底火山喷发作用释放的PGE对南海中西部深海盆区沉积物中的PGE可能有重要贡献.
보도료남해표층침적물중박족원소적봉도급기분포특정.52개표층침적물중박족원소(PGE)함량변화범위:조위0.40×10-9～3.20×10-9,평균치위1.20×10-9;파위0.01×10-9～13.30×10-9,평균치위4.31×10-9;의위0.59×10-9～4.49×10-9,평균치위1.21×10-9;박위1.27×10-9～16.21×10-9,평균치위5.26×10-9;로위0.05×10-9～0.2×10-9,평균치위0.12×10-9;금위0.43×10-9～27.38×10-9,평균치위6.92×10-9.진관PGE함량여침적물평균립경적관계불시흔명현,단시정체상수평균립경적증대,PGE함량출현축점감소적추세,표현출일정적립도공제규률.남해전해역표층침적물박、파、조、로、의화금적고산배경치분별위1.168×10-9±0.190×10-9,3.228×10-9±0.403×10-9,1.085×10-9±0.189×10-9,4.432×10-9±0.258×10-9,0.123×10-9±0.023×10-9화4.720×10-9±0.413×10-9,원고우아국대륙동부지각적,이여심해침적물적기본처우동일수평,표현출료해양침적물부집PGE적고유특정.진관PGE재대륙가구유소부집,단명현부집구주요분포재려송도이서지중앙해분구역,지시해저화산분발작용석방적PGE대남해중서부심해분구침적물중적PGE가능유중요공헌.
The content values and distribution of the PGE from surficial sediments in the South China Sea are reported.The contents (in dried weight) of rathenium,palladium,iridium,platium,rhodium,gold in 52 surficial sediments are 0.40 ×10-9～3.20×10-9 (average 1.20×10-9),0.01×10-9～13.30×10-9(average 4.31×10-9),0.59×10-9～4.49×10-9 (average 1.21×10-9),1.27×10-9～16.21×10-9 (average 5.26×10-9),0.05×10-9～0.20×10-9 (average 0.12×10-9) and 0.43×10-9 ～ 27.38×10-9 (average 6.92×10-9) respectively.The relationship between contents and grain sizes is not clear,but the contents of palatinum group elements show a decreasing trend with the increase of grain size generally.The calculated background values of platinum,palladium,ruthenium,rhodium,iridium and gold are 1.168×10-9±0.190×10-9,3.228×10-9 ±0.403× 10-9,1.085×10-9±0.189×10-9,4.432×10-9±0.258×10-9,0.123×10-9±0.023×10-9 and 4.720×10-9±0.413×10-9,respectively,which are much higher than those of the continental crust of eastern China,but keep the same order with the sediments of deep ocean or slightly higher than them,and showing the connatural characterstics of the marine sediments rich in platinum group elements.The platinum group elements enrich not only in shallow continental shelf area of main river mouths,but also in central deep sea basin area due to the contribution of volcanics input in deep ocean basin area.