Excess argon in deep-sea rocks.
Excess argon in deep-sea rocks.
复制标题
深海岩石中过量的氩。
DOI：
10.1016/s0012-821x(68)80021-4
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发表时间：
1968
期刊：
影响因子：
--
通讯作者：
E. Bonatti
中科院分区：
文献类型：
--
作者：
J. Funkhouser;D. E. Fisher;E. Bonatti
过量的放射性氩和氦在新鲜的、地质上年轻的海底玄武岩中被发现，这些玄武岩是从东太平洋隆起的顶部和距离隆起不同距离的几个海山中挖掘出来的。过量气体的存在与样品的玻璃含量有关：玻璃状的外缘保留了最大的量，流的更结晶的内部显示较少或没有过量的放射性气体。除了玻璃含量之外，没有确定的标准来判断所测K-Ar年龄的有效性，尽管在有限数量的样品上进行的裂变径迹测量提供了合理的上限。
Excess radiogenic argon and helium were found in fresh, geologically young submarine basalts dredged from the crest of the East Pacific Rise and from several seamounts at varying distances from the crest. The presence of the excess gases is related to the glass content of the samples: the glassy outer rim retaining the greatest amount, the more crystalline interior of the flow showing less or no excess radiogenic gases. No definite criteria, other than glass content, could be established to judge the validity of measured K-Ar ages, although fission-track measurements on a limited number of samples provided reasonable upper limits.