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INDONESIA
Indonesian Journal of Geography
Published by Universitas Gadjah Mada
ISSN : 00249521     EISSN : 23549114     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Indonesian Journal of Geography ISSN 2354-9114 (online), ISSN 0024-9521 (print) is an international journal of Geography published by the Faculty of Geography, Universitas Gadjah Mada in collaboration with The Indonesian Geographers Association. Our scope of publications includes physical geography, human geography, regional planning and development, cartography, remote sensing, and geographic information system. IJG publishes its issues three times a year in April, August, and December.
Arjuna Subject : -
Articles 633 Documents
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New type of cave in the Tien Phuoc District, Quang Nam Province, Viet Nam Nguyen, Giang Thi Truong; Xuan, Nam Nguyen; T, Hieu P.; Pham, Minh
Indonesian Journal of Geography Vol 57, No 3 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.107198

Abstract

Cave systems in Vietnam typically develop in limestone terrains, which cover about 20% of the national territory and are concentrated mainly in the north. In contrast, Tien Phuoc District (Quang Nam Province) is located in central Vietnam, featuring a hilly topography composed primarily of metamorphic rocks, with no previously recorded limestone terrain. The recent discovery of "Bat Cave," a notable scenic site in this region, has revealed a new type of cave development. Through geological, geomorphological surveys, and petrology analysis, the study identifies that Bat Cave formed within lime-bearing metamorphic rocks. Surface features, such as karren landforms—typically associated with karst terrain—indicate significant chemical weathering due to rainwater. The cave walls and floor also show signs of fluvial dissolution. Additionally, tectonic activity, including faulting and uplift, appears to have influenced the cave's formation, interacting with exogenous processes to shape the current landscape. These findings enhance the understanding of cave formation in non-limestone terrains and provide scientific support for recognizing geological heritage in Central Vietnam. This contributes to the foundation for establishing a future geopark in the region.
Reducing the digital divide as a goal for a knowledge-based economy: Lessons learned from the European Union Tislenko, Maria; Petrović, Marko D.; Massarova, Alena; Radovanović, Milan M.; Potapenko, Maria
Indonesian Journal of Geography Vol 57, No 3 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.107601

Abstract

The research examines the European Union’s (EU’s) policy to boost digitalization and reduce the digital divide. It involves seven strategic documents and three funding programs to evaluate their impact on building a knowledge-based economy in EU member states. It aims to identify connections between the EU’s digital divide reduction policy and the path toward a knowledge economy. The analysis includes comparative, correlation, and regression analyses of the strategic planning documents, funding, and statistical data. It reveals a discrepancy between the EU’s digital divide reduction policy and the goals of a knowledge-based economy. The implementation is hindered by inadequate and uneven funding, as well as the declarative nature of the goals outlined in the strategic documents. Furthermore, the correlation analysis of the Digital Economy and Society Index (DESI), the Global Knowledge Index (GKI), and proxy variables reveals significant relationships between digital transformation, a knowledge-based economy, and overall socio-economic development. The outcome revealed that the EU’s policy lacks synchronization in reducing digital divides using financial instruments, which hampers the efficiency of transitioning to a digital economy and impedes the potential for technological and socio-economic development in EU countries. Received: 2025-06-06 Revised: 2025-12-16  Accepted: 2025-12-31 Published: 2025-12-31
The origin and evolution of the Menui Basin, part of the Matarombeo Terrain, Southeastern Arm of Sulawesi, Based on Geological and Geophysical Data Samodra, Saptono Budi; Surjono, Sugeng Sapto; Amijaya, Donatus Hendra; Suryanto, Wiwit
Indonesian Journal of Geography Vol 57, No 3 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.113432

Abstract

Menui Sub-basin is a part of Matarombeo terrain, located in south-east arm of Sulawesi Island – Indonesia. Matarombeo terrain geologically is bounded by Matano Fault, Lawanopo Fault, and Tolo Trust. Different from western part of Matarombeo Terrain that consist of Mountain, Menui Sub-basin is located at eastern part of Matarombeo Terrain, covered by sea water of Tolo Bay. The aim of this research is to interpreted basin formation and evolution of Menui Sub-basin, based on geomorphological and geological observation, further than stratigraphic and structural analysis. Research method included IFSAR image interpretation, geological field observation, and laboratory analysis such as petrography, paleontology,  structural geology and sub surface analysis. Geologic and structural geology data were collected from surface mapping in land of Matarombeo, but sub-surface interpretation beneath Tolo bay were taken from gravity and seismic data. Stratigraphically, study area consist of Cretaceous – Oligocene ophiolite series which thrusted above Mesozoic sedimentary rocks from the continental crust origin. Unconformably above those two rock groups deposited molasse group on Miocene. The study area has been affected by three different tectonic stress phases.  Formation and evolution of Menui Sub-Basin is characterized by several distinct events. The events begin from its history as part of Australia (pre-rifting sequence), the detachment from Australia (syn-rifting sequence), movement to its present location (syn-drifting sequence) and during and after the collision with SE Sulawesi (syn-orogen and post-orogen sequences).Received: 2025-11-24 Revised:  2025-12-13 Accepted: 2025-12-31 Published: 2025-12-31

Page 64 of 64 | Total Record : 633

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