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All Journal Journal of Education and Learning (EduLearn) IJOG : Indonesian Journal on Geoscience
Nguyen Thi Phuong Thao
Faculty of Environment, Ho Chi Minh City University of Technology (HCMUT)
Humanities Earth & Planetary Sciences Education Library & Information Science Social Sciences Other

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Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin Ngoc, Pham Bao; Nghi, Tran; Tin, Nguyen Trong; Tri, Tran Van; Tuyen, Nguyen Thi; Dung, Tran Thi; Thao, Nguyen Thi Phuong
Indonesian Journal on Geoscience Vol 4, No 3 (2017)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.4.3.143-157

Abstract

DOI: 10.17014/ijog.4.3.143-157This paper introduces the petrographic characteristics and depositional environment of Middle Miocene rocks of the Thien Ung - Mang Cau structure in the central area of Nam Con Son Basin based on the results of analyzing thin sections and structural characteristics of core samples. Middle Miocene sedimentary rocks in the studied area can be divided into three groups: (1) Group of terrigenous rocks comprising greywacke sandstone, arkosic sandstone, lithic-quartz sandstone, greywacke-lithic sandstone, oligomictic siltstone, and bitumenous claystone; (2) Group of carbonate rocks comprising dolomitic limestone and bituminous limestone; (3) Mixed group comprising calcareous sandstone, calcarinate sandstone, arenaceous limestone, calcareous claystone, calcareous silty claystone, dolomitic limestone containing silt, and bitumen. The depositional environment is expressed through petrographic characteristics and structure of the sedimentary rocks in core samples. The greywacke and arkosic sandstones are of medium grain size, poor sorting and roundness, and siliceous cement characterizing the alluvial and estuarine fan environment expressed by massive structure of core samples. The mixed calcareous limestone, arenaceous dolomitic limestone, and calcareous and bituminous clayey siltstone in the core samples are of turbulent flow structure characterizing shallow bay environment with the action of bottom currents. The dolomitic limestones are of relatively homogeneous, of microgranular and fine-granular texture, precipitated in a weakly reducing, semi-closed, and relatively calm bay environment.
Digital language teacher professional development in online community of practice: Indonesia-Vietnam perspective Nggawu, La Ode; Jamiludin, Jamiludin; Darnawati, Darnawati; Uke, Waode Ade Sarasmita; Anas, Ismail; Thao, Nguyen Thi Phuong; Thư, Võ Thị Anh
Journal of Education and Learning (EduLearn) Vol 20, No 1: February 2026
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/edulearn.v20i1.22939

Abstract

This study investigates digital language teacher professional development (TPD) within online communities in Indonesia and Vietnam, employing Pinar’s currere framework to identify optimal practices. Through qualitative methods, including interviews and observations, this study examined the experiences of English language educators navigating digital education in these countries. The findings indicate that, while both nations emphasize the significance of digital literacy, educators encounter challenges in acquiring essential digital competencies due to limited resources and infrastructure. Online communities of practice (CoPs) function as valuable platforms for knowledge dissemination, peer support, and professional growth, enabling teachers to enhance their digital proficiency. However, issues such as internet accessibility, time constraints, and language barriers persist as obstacles. This investigation underscores the necessity for tailored TPD programs that address these specific challenges, ultimately fostering effective integration of technology into language instruction.
Co-Authors Anas, Ismail Darnawati, Darnawati Dung, Tran Thi Jamiludin, Jamiludin La Ode Nggawu Nghi, Tran Ngoc, Pham Bao Thư, Võ Thị Anh Tin, Nguyen Trong Tri, Tran Van Tuyen, Nguyen Thi Waode Ade Sarasmita Uke