A reaction-transport model of periodic precipitation of pyrite in anoxic marine sediments
A reaction-transport model of periodic precipitation of pyrite in anoxic marine sediments
复制标题
缺氧海洋沉积物中黄铁矿周期性沉淀的反应-输运模型
DOI：
10.1016/j.chemgeo.2011.06.004
复制
发表时间：
2011
期刊：
影响因子：
3.9
通讯作者：
I. L’Heureux
中科院分区：
文献类型：
--
作者：
R. Bektursunova;I. L’Heureux
周期性降水模式（Liesegang带）是地球化学系统自组织的良好表现。周期性黄铁矿带的例子以前曾在缺氧沉积物系统中报道过，如东地中海的腐泥。在这方面的贡献，我们提出了一个模式Liesegang黄铁矿带形成缺氧海洋沉积物。该模型是基于早期成岩反应输运过程，并结合成核和生长的黄铁矿微晶。黄铁矿带形成的模拟结果与沉积物模拟中观察到的实验黄铁矿化模式以及腐泥沉积物中的观察结果是相容的。
Periodic precipitation patterns (Liesegang bands) constitute good manifestations of self-organization in geochemical systems. Examples of periodic pyrite bands have been previously reported in anoxic sediment systems, such as sapropels from the Eastern Mediterranean. In this contribution, we present a model of Liesegang pyrite band formation in anoxic marine sediments. The model is based on early diagenetic reactive-transport processes and incorporates nucleation and growth of pyrite crystallites. The simulation results of pyrite band formation are compatible with the experimental pyritization pattern observed in a sediment analog, as well as the observations in sapropel sediments.
DOI：
10.1137/0910062
发表时间：
1989-09-01
期刊：
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING
影响因子：
--
作者：
BROWN, PN;BYRNE, GD;HINDMARSH, AC
通讯作者：
HINDMARSH, AC