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All Journal Journal of Tropical Ethnobiology Jurnal Multidisiplin Madani (MUDIMA)
Muhammad Nur Hidayat
Laboratorium Biologi dan Pengawetan Kayu, Fakultas Kehutanan Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Social Sciences

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Ciri Makroskopis Fosil Kayu dari Tiga Desa di Kalimantan Timur Nani Husien; Mia Maulida; Muhammad Nur Hidayat; Febrian; Erwin; Agus Sulityo Budi; Sujiman Kasnadi
Journal of Tropical Ethnobiology 2021: Prosiding Seminar Nasional PMEI V 2020
Publisher : The Ethnobiological Society of Indonesia

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Abstract

Natural resources in East Kalimantan are not only in the form of forests with various types of plants, but the resources also reserve various wood fossils that have lived in the past. Until now, the types of wood fossils are almost unknown. Fossil wood should be a historical asset that needs to be preserved and protected. In addition to being evidence of prehistoric times, it can also be used as material for studying plants in the past. This study was a preliminary study that aimed to identify the macroscopic attributes of wood fossils found in three villages in the Kutai Kertanegara regency, East Kalimantan. The method used was the macroscopic preparation method of fossil samples with carborundum powder. Macroscopic observations indicated that the wood fossils found in the three locations have different macrostructures, varied in color: black, brown, red, and a mixture of several colors. In the transverse section of the three samples of wood fossils, they showed the presence of pore cells (vessels) and a narrow to relatively wide rays parenchyma cell line, which indicated that the wood fossils from these three villages were broad-leaved (Hardwood). The results of the calculation of the specific gravity of the wood fossil found ranged from 2.3 to 5.5, with a hardness value between 4 and 6 on the Mohs scale.
Characteristics of Fossil Wood from Loa Tebu Kutai Kertanegara, East Kalimantan Nani Husien; Muhammad Nur Hidayat; Agus Sulistyo Budi; Erwin
Jurnal Multidisiplin Madani Vol. 3 No. 2 (2023): February 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/mudima.v3i2.2479

Abstract

Fossil Wood is wood that has petrified as a result of wood or plant stems being buried by sediment, does not experience decay and the cells in the wood are replaced by minerals over a long period of time but the outer structure of the wood is still maintained. One way to find out the characteristics of fossil wood is by observing or characterizing it both macroscopically and microscopically. This study aims to determine the macroscopic characteristics, hardness values and density of wood fossils found in Loa Tebu Village, Kutai Ketanegara. Observations of macroscopic characteristics included the color of wood fossils which were observed by naked eye and with a loupe magnification of 10x, and observations of other macroscopic characteristics were carried out on three areas of wood namely transverse, tangential and radial planes using a Nikon SMZ 645 Stereo Microscope with a magnification of 30x. The hardness value uses a rock hardness test tool, namely "Diamond Selector II", while the density uses the general calculation standard for specific gravity, namely the ratio of mass to volume. The results showed that the characteristics of the fossil wood from Loa Tebu were light brown, dark brown, white and gray in color. The color found in the wood fossils is probably caused by cells that have been mixed with inorganic elements and mineral constituents around the location of the wood fossils. Another macroscopic structural observation was the discovery of wood cells such as those of broad leaf wood in general, namely the presence of vessel cells (pores), radius cells and clusters of fiber cells. Axial intercellular channels (SIA) were also found in the samples and arranged tangentially. The AIA characteristics found here are common characteristics that are often found in several species of wood from the Dipterocarpaceae family. The results of the measurement of the sample hardness value were 4 on the Mohs scale and the density was 3.26
Co-Authors Agus Sulistyo Budi Agus Sulityo Budi Erwin Febrian Laksono Trisnantoro Mia Maulida Nani Husien Sujiman Kasnadi