Studies of strain and rheology of conglomerates

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• 作者：Treagus ; Susan H. ; Treagus ; Jack E.
• 关键词：Conglomerate ; Strain ; Rheology ; Rock viscosity ratios
• 刊名：Journal of Structural Geology
• 出版年：2002
• 出版时间：October, 2002
• 年：2002
• 卷：24
• 期：10
• 页码：1541-1567
• 全文大小：1.34 M

文摘

Conglomerates can show significant strain variations among their component rock types. Previous studies have exploited this feature as a method of quantifying the effective viscosity ratios among different rock types, using inclusion–matrix models that we review here. We further investigate the rheology of conglomerates via models of multiphase mixtures of spherical clasts with varying phase fractions. Using idealised models with two to four phases, we can quantify the influence of phase viscosities and volume fractions on the bulk viscosity, and reveal how this controls the strain partitioning among the different phases.