%0 Journal Article
%T A preliminary study of depth distribution of crystal sizes within the gabbro layer of the oceanic crust<br>海洋地壳辉长岩层中晶体颗粒大小随深度分布的初步探讨
%A ZHANG Zhi-Gang CHEN Yong-Shun Computational Geodynamics Laboratory
%A <br>张志刚
%A 陈永顺
%J 地球物理学报
%D 2004
%I 
%X The present crustal accretion model at a fast spreading ridge predicts at least an order of magnitude difference on average in the crystallization time, the time for a crystal to cool itself to a given temperature, between the upper gabbros and lower gabbros. As a consequence, lower gabbros of the oceanic crust could have a larger crystal grain size on average than that of the upper gabbros as seen from the filed observations at the Oman ophiolite.
%K Ophiolite
%K Crystallization time
%K Mid-ocean ridge dynamics
%K Accretion mechanism of oceanic crust
%K Structure of the gabbros
%K Magma chamber at mid-ocean ridges<br>蛇绿岩套成岩时间
%K 大洋中脊动力学海洋地壳生成机制
%K 海洋辉长岩层结构
%K 海洋地壳岩浆房
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=0CF10B2218173311&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=E158A972A605785F&sid=44E78A5D1B37D836&eid=D9D6C3CD78BED2C5&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=0&reference_num=16