全球,在许多地质构造中都发现了硅化木。重要的是,木材的有机材料不再占主导地位;几乎所有的木化石都被矿化成无机二氧化硅材料。必须了解这些独特的地质过程,以更好地了解有机材料的石化,特别是在微米级。因此,我们的目的是使用全面的微观分析表征硅化木材的组成。使用的方法是XRF,ICP-MS,XRD,FTIR,和FE-EPMA。标本来自Jasinga,西爪哇,印度尼西亚。结果表明,木材硅化是通过二氧化硅从基质岩石渗入木材结构空间来控制的。在Jasinga,它们由上新世凝灰岩沉积岩控制。二氧化硅相的比例揭示了硅化程度的趋势。除了二氧化硅,微量元素的分布也表明了木化石与寄主岩石之间的地球化学相互作用。木化石受到通过硅化作用逐渐用二氧化硅代替有机碳基材料的影响。二氧化硅富集发生在木材内部,有利于矿化和重结晶。二氧化硅代替有机材料并保留木结构。微观分析方法提供了关于木材石化的全面观点,为古生物学研究带来更好的见解。
Worldwide, silicified woods are found in many geological formations. Significantly, the organic materials of wood are no longer dominant; almost all wood fossils have been mineralized into inorganic silica materials. These unique geological processes must be understood to develop better understanding on organic material fossilization, particularly in the micron scale. Therefore, our aim was to characterize the composition of silicified wood using comprehensive microanalysis. The methods utilized were XRF, ICP-MS, XRD, FTIR, and FE-EPMA. Specimens are from Jasinga, West Java, Indonesia. The results showed that wood silicification was controlled by the infiltration of silica from the host rock into the spaces of the wood structure. In Jasinga, they are controlled by Pliocene tuffaceous sedimentary rocks. The ratio of silica phases revealed a trend in the degree of silicification. Besides silica, the distribution of trace elements also demonstrates the geochemical interaction between the wood fossil and host rock. Wood fossils are affected by the gradual replacement of organic carbon-based materials with silica through silicification. Silica enrichment occurs in the internal of wood, facilitates permineralization and recrystallization. Silica replaces organic material and preserves the wood structures. The microanalytical approach provides comprehensive perspectives on wood petrification, leads to better insights for paleontological studies.