Manuel Quiring

化石拍卖 （专家强推）

一块非常完整保留的马达加斯加化石木片。地质时期：早侏罗世。色彩美丽，木纹清晰且保存完好，质量极佳。 
请注意，经过数百万年的矿物晶体在木缝内形成，十分美丽。
这是来自马达加斯加安比洛贝（Ambilobe）的一块宽大圆形木化石（华结木科Araucaria）。Araucaria是一科针叶树，属于现代“猴面包树”家族。约两亿两千万人年前的木化石已被切片并两面打磨，能够清晰看到内部木纹细节和美丽的着色。
木化石指的是通过矿化作用把木材转变成石头的过程。在这个过程中，所有有机物都会被矿物质替代，同时保留了诸如树轮等原始结构。要发生这种现象，木材需要埋藏在氧气含量较低、并有流动的矿物质富集的水环境中，以便矿物质取代结构。着色由化石化过程中的水中各种矿物质/杂质所致。例如，许多情况下的红色可归因于铁化合物，绿色则与铜有关，等等

A really well preserved fossil wood slice from Madagascar. Period Lower Jurassic. Beautiful colors, evident and beautifully preserved wood texture, truly excellent quality. 
Note the beautiful mineral crystallization created over millions of years inside the cracks of the wood
This is a wide round of petrified wood (Araucaria) from Ambilobe, Madagascar. Araucaria is a coniferous tree in the family that includes the modern Monkey Puzzle tree. This 220 million year old petrified wood has been sliced and polished on both sides, allowing the stunning inner wood detail and beautiful coloration to easily be seen.
Petrified wood is the name given to wood that has been turned into stone (fossilized) through the process of permineralization. In this process, all of the organic matter becomes replaced by minerals, while much of the original structure, such as tree rings, is retained. For this to happen, the wood needs to be buried in an environment low in oxygen to prevent decomposition and with flowing, mineral-laden water, so minerals may replace structures. The coloration is caused by various minerals/impurities present in the water during fossilization. For example, red colors in many cases can be attributed to iron compounds, greens due to copper, and so on

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木化石 - 化石木材 - 53 cm - 33 cm

侏罗纪， 下 （2.013 - 1.741 亿年） - 马达加斯加

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木化石 - 化石木材 - 53 cm - 33 cm

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