Open-system behavior during chondrule formation
Open-system behavior during chondrule formation
复制标题
球粒形成过程中的开放系统行为
DOI：
--
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
P. Benoit
中科院分区：
文献类型：
--
作者：
D. Sears;H. Shaoxiong;P. Benoit
球粒在形成过程中是否表现为开放系统的问题对于我们理解球粒和球粒陨石的形成至关重要。球粒类型的范围非常大，最好用成分分类方案来概括，其中原始球粒群（即，那些不是由变质过程产生的）是A1、A2、A5和B1。在Semarkona（LL3.0）球粒陨石中，A1、A2、A5和B1组球粒分别占球粒总数的10.5%、25.0%、5.0%和56.9%。我们认为，A1和A2组产生的还原和蒸发过程中的球粒形成的材料最初类似于B1组球粒。
The question of whether chondrules behaved as open systems during formation is crucial to our understanding of both chondrule and chondrite formation. The very large range of chondrule types is best summarized by the compositional classification scheme, wherein the primitive chondrule groups (i.e., those not produced by metamorphic processes) are A1, A2, A5, and B1. In the Semarkona (LL3.0) chondrite, 10.5%, 25.0%, 5.0%, and 56.9% (by number) of the chondrules are groups A1, A2, A5, and B1, respectively. We argue that groups A1 and A2 were produced by reduction and evaporation during chondrule formation of material originally resembling group B1 chondrules.