Szczegóły obiektu: Characteristics and mineralogy of sediments in the Hongsa lignite deposit, northwestern Laos

Instytucja dostarczająca:Platforma Otwartych Czasopism Naukowych UAM

Opis

Tytuł:
Characteristics and mineralogy of sediments in the Hongsa lignite deposit, northwestern Laos
Twórca:
Sattraburut, Thunyapat;
Thasod, Yupa;
Ratanasthien, Benjavun;
Vongvassana, Sirasit
Opis:
Two sediment cores from the central part of the Hongsa lignite deposit in northwestern Lao PDR (Lao People’s Democratic Republic; Laos) have been analysed in order to understand their sedimentary characteristics using grain-size analysis, petrography, X-ray diffraction and scanning electron microscopy. This analysis has revealed that the deposit is primarily composed of fine-grained sediments, mainly silt and clay, with quartz as the dominant mineral and trace amounts of other minerals such as kaolinite, illite and montmorillonite. Gypsum and chlorite have also been found in some layers. Scanning electron microscope analysis has revealed a card-house structure of clay minerals, suggesting sedimentation from suspension driven by physico-chemical reactions influenced by pH and water chemistry. This arrangement increases porosity and water retention, significantly affecting the permeability and mechanical properties of sediments. Petrographic analysis has documented angular quartz and poorly sorted sediments, indicating minimal sediment reworking or short-distance sources. The palaeoenvironment of the Hongsa Basin, reconstructed from various rock units, suggests low-energy water conditions for the Underburden and moderate sediment supply in a wet forest swamp or bush moor environment for the Lower Lignite Zone Formation. The Middle Lignite Zone Formation indicates a more limited sediment supply in a similar environment, while Interburden Formation 1 suggests overbank deposits or stagnant water deposits. In summary, the Neogene Hongsa lignite deposit is characterised by fine-grained sediments, indicating low-energy water currents in mire environments. Occasional flood events brought coarser grains, although movement of facies should also be taken into account. The mineral composition suggests the presence of components derived from recycled sedimentary rocks along the northern border of the Hongsa Basin.
Dostępność obiektu:
Dostęp otwarty
Prawa: https://creativecommons.org/licenses/by-nc-nd/3.0/ ;
Prawa autorskie (c) 2024 Thunyapat Sattraburut, Yupa Thasod, Benjavun Ratanasthien, Sirasit Vongvassana
Data:
2024.12.20
Typ:
info:eu-repo/semantics/article;
info:eu-repo/semantics/publishedVersion;
Research papers
Język:
angielski
Źródło:
Geologos; Vol. 30 No. 3 (2024); 171-194;
Geologos; Tom 30 Nr 3 (2024); 171-194;
2080-6574;
1426-8981
Format:
application/pdf
Wydawca:
Adam Mickiewicz University Poznan
Relacja: http://pressto.amu.edu.pl/index.php/logos/article/view/45959/37891
Temat i słowa kluczowe:
grain size;
petrography;
X-ray diffraction;
scanning electron microscopy;
clay minerals;
palaeoenvironment
Identyfikator: http://pressto.amu.edu.pl/index.php/logos/article/view/45959
Dostawca danych:
Platforma Otwartych Czasopism Naukowych UAM

Podobne obiekty

Characteristics and mineralogy of sediments in the Hongsa lignite deposit, northwestern Laos

Twórca:Sattraburut, Thunyapat | Thasod, Yupa | Ratanasthien, Benjavun | Vongvassana, Sirasit

Data:2024.12.20

Rodzaj zawartości:pozostałe

Thermally-induced dimensionality change in derivative of a “super stable” Blatter radical

Data:2024.07.09 | 2023

Rodzaj zawartości:teksty

Histological organization and microarchitecture of various cells lining the olfactory epithelium of Rita rita (Hamilton, 1822) (Siluriformes: Bagridae)

Twórca:Kumar Ghosh, Saroj | Chakrabarti, Padmanabha

Data:2013.04.13

Rodzaj zawartości:pozostałe

Experimental studies of vibratory trauma of Corti's organ. II. Scanning electron microscopy

Twórca:Bochnia, Marek | Dziewiszek, Wojciech | Kassner, Jerzy

Data:2001

Rodzaj zawartości:pozostałe

Development and study of perspective clinical properties of biologically active matrix composed of decellularized lyophilized human amniotic membrane in combination with platelet-derived growth factors and hyaluronic acid

Twórca:Vyshnevska, H. O. | Kakabadze, Z. Sh. | Schnayder, S. A. | Tiron, O. I. | Dzygal, O. F.

Data:2019.11.29

Rodzaj zawartości:teksty

Synthesis and structure determination of stereoisomeric 2,2’-dibenzoyl-3,3’,4,4’-tetramethyl-1,1’-diphosphaferrocenes

Twórca:Kłys, Arkadiusz | Małecka, Magdalena | Zakrzewski, Janusz

Data:2021.12.17 | 2007

Rodzaj zawartości:obrazy

Occupational exposure assessment for crystalline silica dust: approach in Poland and worldwide

Twórca:Maciejewska, Aleksandra

Data:2008

Rodzaj zawartości:pozostałe

Temperature-dependent polymorphism of N-(4-fluorophenyl)-1,5-dimethyl-1H-imidazole-4-carboxamide 3-oxide: experimental and theoretical studies on intermolecular interactions in the crystal state

Twórca:Rybarczyk-Pirek, Agnieszka J. | Łukomska, Marlena | Ejsmont, Krzysztof | Jasiński, Marcin | Palusiak, Marcin

Data:2016.03.30 | 2014

Rodzaj zawartości:obrazy

Federacja Bibliotek Cyfrowych

Szczegóły obiektu: Characteristics and mineralogy of sediments in the Hongsa lignite deposit, northwestern Laos

Opis

Podobne obiekty