Analysis of the composition and minerals diagrams determination of petrified wood

Kuczumow, Andrzej; Nowak, Jakub; Kuzioła, Rafał; Jarzębski, Maciej

doi:10.1016/j.microc.2019.04.070

Cited by 5 publications

(4 citation statements)

References 58 publications

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“…However, considering the broadness of the two spectra as well as the slight shift in peak wavelength between them, it is also conceivable that other components such as lignin, cellulose, or the cellulose–lignin complex present in plant cell walls 14 contribute to the observed fluorescence. This is consistent with a previous Raman spectroscopy study of mineralized wood which demonstrated that lignin and, to some extent, cellulose do preserve in mineralized wood 53 . The third spectrum (Ch/Mi 650, Fig.…”

Section: Resultssupporting

confidence: 93%

Two-photon excitation fluorescence microspectroscopy protocols for examining fluorophores in fossil plants

Stoneman,

McCoy,

Gee

et al. 2024

Commun Biol

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Fluorescence emission is common in plants. While fluorescence microscopy has been widely used to study living plants, its application in quantifying the fluorescence of fossil plants has been limited. Fossil plant fluorescence, from original fluorophores or formed during fossilization, can offer valuable insights into fluorescence in ancient plants and fossilization processes. In this work, we utilize two-photon fluorescence microspectroscopy to spatially and spectrally resolve the fluorescence emitted by amber-embedded plants, leaf compressions, and silicified wood. The advanced micro-spectroscope utilized, with its pixel-level spectral resolution and line-scan excitation capabilities, allows us to collect comprehensive excitation and emission spectra with high sensitivity and minimal laser damage to the specimens. By applying linear spectral unmixing to the spectrally resolved fluorescence images, we can differentiate between (a) the matrix and (b) the materials that comprise the fossil. Our analysis suggests that the latter correspond to durable tissues such as lignin and cellulose. Additionally, we observe potential signals from chlorophyll derivatives/tannins, although minerals may have contributed to this. This research opens doors to exploring ancient ecosystems and understanding the ecological roles of fluorescence in plants throughout time. Furthermore, the protocols developed herein can also be applied to analyze non-plant fossils and biological specimens.

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Section: Resultssupporting

confidence: 93%

Two-photon excitation fluorescence microspectroscopy protocols for examining fluorophores in fossil plants

Stoneman,

McCoy,

Gee

et al. 2024

Commun Biol

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“…The objects of research are petrified wood and dispersed organic matter (OM) in hard and loose mineral deposits in which forest vegetation is buried. Petrified wood is a remnant material from distant epochs that was fossilized in a mineralized form [5]. Samples of loose black rock at different depths of the section were selected, as well as samples of hard and loose rock of black and gray colors, fragments of a petrified tree branch to conduct analytical studies of the composition and properties.…”

Section: Methodsmentioning

confidence: 99%

Organic matter of sediments of South Chukotka

et al. 2020

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The article discusses data on paleosol, mineralogy, and paleobotany obtained as a result of studying material collected from the Maastricht-Early Paleocene sediments of the Tanyurer Formation of South Chukotka. The burial of organic matter in the sedimentary rock of the Tanyurer Formation is associated with deflationary processes during the period of activation of volcanic activity. On the drained volcanic plateau of soil formation, a sod humus-accumulative process prevailed under the steppe vegetation. Humic substance dispersed in sedimentary rock was represented by a group of humins resistant to microbial decomposition. As a result of exposure to high pressures and temperatures, the colloidal form of humus was transformed into kerogen. Organic compounds (cellulose, lignin) in the plant tissue of buried tree trunks were replaced by silicon compounds. Weathering processes have affected the thin surface layer of dense sedimentary rock. Under the influence of the temperature and humidity gradient, loosening of loose rock and disintegration of clots of colloidal forms of humus occurred.

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“…Kayu adalah suatu bahan karbohidrat yang tersusun terutama atas karbon, hidrogen dan oksigen [8]. Kayu mengandung senyawa organik yang tetap tinggal (residu) setelah terjadi pembakaran pada suhu tinggi pada kondisi oksigen yang melimpah yang dikenal sebagai abu.…”

Section: Pendahuluanunclassified

Desain dan Pembuatan Cetakan Papan Tiruan Metode Cetak Tekan

Hutasoit

Sihombing

Padang

2021

JMEMME

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Peningkatan kebutuhan kayu untuk keperluan papan dan lain-lain mendorong dilakukannya penyelidikan untuk membuat kayu dari bahan lain yang melimpah dan ramah lingkungan. Kerusakan hutan menyebabkan penggunaan kayu dari hutan dibatasi sehingga mendorong kegiatan penyelidikan untuk mendapatkan kayu tiruan dari bahan alami. Wilayah Indonesia merupakan daerah yang subur ditanami oleh tanaman pisang sehingga jenis tanaman ini dijumpai dalam jumlah yang cukup banyak. Oleh karena itu, diperlukan alat untuk membuat kayu tiruan yang dapat digunakan secara dengan mudah dan murah.Tujuan studi ini ialah untuk merancang dan membangun alat cetak kayu tiruan dari bahan pelepah batang pisang. Metode yang digunakan ialah metode tekan dengan ketebalan 50 mm. Bahan-bahan yang digunakan berasal dari bahan-bahan yang mudah dijumpai dengan harga yang relatif lebih murah. Analisa kekuatan alat menggunakan perhitungan kesetimbangan gaya statis dari hukum-hukum gerak mekanik Newton. Hasilnya diperoleh alat cetak kayu tiruan dengan sumber beban berasal dari pompa hidrolik sederhana. Alat ini juga telah berhasil menghasilkan papan tiruan dari bahan komposit laminate pelepah pisang.

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Analysis of the composition and minerals diagrams determination of petrified wood

Cited by 5 publications

References 58 publications

Two-photon excitation fluorescence microspectroscopy protocols for examining fluorophores in fossil plants

Two-photon excitation fluorescence microspectroscopy protocols for examining fluorophores in fossil plants

Organic matter of sediments of South Chukotka

Desain dan Pembuatan Cetakan Papan Tiruan Metode Cetak Tekan

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