重慶際華拍賣有限公司
重慶際華拍賣有限公司，為藏品強(qiáng)大的傳播效應(yīng)向各位買家推薦經(jīng)國(guó)家一級(jí)鑒定專家甄選的藝術(shù)珍品，為藏家牽線搭橋，讓千百件藝術(shù)珍品價(jià)值被發(fā)掘與重視，在拍賣會(huì)上得以高價(jià)成交。
【名稱】 木化石
【規(guī)格】 重：16.3kg
【類別】 雜項(xiàng)
藏品編號(hào)【JH268】
木化石又稱硅化木，是地質(zhì)歷史時(shí)期的樹木經(jīng)歷地質(zhì)變遷，最后埋藏在地層中，經(jīng)歷地下水的化學(xué)交換、填充作用，從而這些化學(xué)物質(zhì)結(jié)晶沉積在樹木的木質(zhì)部分，將樹木的原始結(jié)構(gòu)保留下來，于是就形成為木化石。
樹木被泥沙埋藏后，含豐富硅質(zhì)成分的地下水溶液一邊溶解樹木的木質(zhì)成分，一邊將自己攜帶的硅質(zhì)成分沉淀于所溶解的孔洞中，發(fā)生物質(zhì)交換替代現(xiàn)象。
樹木的原來成分已蕩然無存，全部由含硅鈣成分的石質(zhì)所取代。之后，經(jīng)過壓實(shí)、固結(jié)、成巖，原來的樹木就完全變成了堅(jiān)硬的石頭木化石。
此木化石呈黃褐色，可清晰看到木質(zhì)結(jié)構(gòu)和紋理已呈現(xiàn)玉石質(zhì)感，玉化程度達(dá)30%左右。樹木保存為化石的條件極為苛刻，先決條件是其樹干與空氣隔絕，木質(zhì)不易腐爛，在漫長(zhǎng)的地質(zhì)作用過程中被含硅鈣物質(zhì)交換替代，替換的過程保留了木質(zhì)的纖維結(jié)構(gòu)和樹干的外形，使樹木變成化石。因此，樹木成為化石的幾率非常小。
樹化石不僅展現(xiàn)了自身斑斕多姿的特征，還記錄和見證著地質(zhì)變遷和物種衍化，為人們研究古植物及古生物史以及古代地質(zhì)和氣候變化提供了珍貴線索。
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[Name] Wood fossil
[Specification] Weight: 16.3kg
[Category] Miscellaneous
NO.[JH268]
Wood fossils, also known as silicified wood, are geological changes in the geological history of the trees, and finally buried in the stratum, undergoing chemical exchange and filling of groundwater, so that these chemicals are crystallized in the woody part of the trees, retaining the original structure of the trees. Down, so it is formed into wood fossils.
After the trees are buried in the mud, the groundwater solution rich in siliceous components dissolves the wood components of the trees, and deposits the siliceous components carried by them in the dissolved pores to replace the substances.
The original ingredients of the trees have disappeared, and all are replaced by stone containing silicon and calcium. Afterwards, after compaction, consolidation, and diagenesis, the original trees were completely turned into hard stone fossils.
The wood fossil is yellowish brown, and it can be clearly seen that the wooden structure and texture have a jade texture, and the degree of jade is about 30%. The conditions for the preservation of trees as fossils are extremely harsh. The prerequisite is that the trunk is isolated from the air, the wood is not easily rotted, and is replaced by the exchange of silicon-silicate materials during the long geological process. The replacement process preserves the fibrous structure of the wood and the shape of the trunk. To make trees into fossils. Therefore, the probability of trees becoming fossils is very small.
Tree fossils not only display their own colorful features, but also record and witness geological changes and species derivation, providing valuable clues for people to study ancient plants and paleontological history as well as ancient geological and climate change.
