海洋地质与第四纪地质2001，Vol.21Issue(1)：33-38,6.
麦哲伦海山区MD、ME、MF海山富钴结壳特征
COBALT-RICH FERROMANGANESE CRUSTS FROM THE MA，ME AND MF SEAMOUNTS OF THE MAGELLAN SEAMOUNTS
摘要
Abstract
The study of the cobalt-rich ferromanganese crusts which have three-layer structure from the MA，ME and MF seamounts of the Magellan Seamounts gives the following results：（1）the typical three-layer structure crust can be divided into dense layer in the upper part，loose layer in the middle，and dense layer in the lower．The lower dense layer has a simple structure and few gangue minerals，the loose layer has a mixed structure and many gangue minerals，and the upper dense layer has an intermediate nature．The crust contains manganese minerals（mainly vernadite），ferro phase minerals and secondary minerals（clay mineral，phillipsite，quartz，calcite and fluorapatite）．（2）There are clear geochemical differences among the three layers．It is indicated that the oxidation in the paleo-oceanographical environment is decreased from lower to upper layer by Ce anomaly．（3）It is inferred that growth age of the oldest crust is late Miocene in this area， and there were weakest water dynamic condition and stronger oxidation before 4Ma，stronger water dynamic condition and weaker oxidation from 4Ma to 3．1Ma，and strong-weak undulating water dynamic condition and weaker oxidation after 2．6Ma in this area．关键词
富钴结壳/壳层构造/壳层矿物/地球化学/10Be/生长速率/麦哲伦海山分类
海洋科学引用本文复制引用
朱克超,赵祖斌,李扬..麦哲伦海山区MD、ME、MF海山富钴结壳特征[J].海洋地质与第四纪地质,2001,21(1):33-38,6.基金项目
中国大洋协会DY95-9航次勘查资助项目 （）
