Structural Complexity in the Boundary of Forearc Basin – Accretionary Wedge in the Northwesternmost Sunda Active Margin

the area from andaman to northern sumatran margin is a region where major faults collided that complicates the structural configuration. the origin of structures in the boundary between the accretiona...

Estimated Emplacement Temperatures for a Pyroclastic Deposits From the Sundoro Volcano, Indonesia, Using Charcoal Reflectance Analyses

doi: 10.17014/ijog.5.1.1-11this study applies the charcoalification measurement method to infer the emplacement temperature of pyroclastic flow deposits erupted from the sundoro volcano, indonesia. th...

Gliding and Quasi-harmonic Tremor Behaviour of Raung Volcano: November 2014 Crisis Period Case Study

doi: 10.17014/ijog.5.1.13-21the seismic activity of raung volcano was raised on 11 november 2014. as many as 1709 tremors were recorded followed by continuous tremors appearing in late november 2014. ...

The Stability of Metasedimentary Rock in Ranau, Sabah, Malaysia

doi: 10.17014/ijog.5.1.23-31the aim of this paper is to determine the stability of slopes and to propose preliminary rock cut slope protection and stabilization measures for paleocene to middle eocene...

The Early Holocene Vertebrate Faunas From Seropan Cave, Gunung Sewu, YOGYAKARTA, Indonesia

doi: 10.17014/ijog.5.1.33-45an excavation of a vertebrate fossil site was carried out in 2012 in the seropan cave of gunung sewu karst area, wonosari, yogyakarta. among the discovered mammal fossils t...

Petrography and Mineral Chemistry of Magmatic and Hydrothermal Biotite in Porphyry Copper-Gold Deposits: a Tool for Understanding Mineralizing Fluid Compositional Changes During Alteration Processes

doi: 10.17014/ijog.5.1.47-64this study aims to understand the petrography and chemistry of both magmatic and hydrothermal biotites in porphyry copper-gold deposits, and to evaluate the fluid compositi...

Lateral Reservoir Drainage in Some Indonesia's Sedimentary Basins and Its Implication to Hydrodynamic Trapping

doi: 10.17014/ijog.5.1.65-80lateral reservoir drainage is a hydrodynamic flow type driven by the difference in overpressure. it can lead to hydrodynamically tilted hydrocarbon water contact, and open ...

Tectonic Model of Bali Island Inferred From GPS Data

doi: 10.17014/ijog.5.1.81-91seven periods of gps campaign have been conducted for three years since march 2013 - october 2015 on fourteen gps sites across bali island. the gamit/globk 10.6 version was...

Stable Isotopes and Hydrochemistry Approach for Determining the Salinization Pattern of Shallow Groundwater in Alluvium Deposit Semarang, Central Java

doi: 10.17014/ijog.4.1.1-10a groundwater study has been conducted in the semarang city in august 2014, aiming to determine the source of shallow groundwater salinization using stable isotopes (18o, 2h...

Lateral Facies and Permeability Changes in Upper Shoreface Sandstones, Berakas Syncline, Brunei Darussalam

doi: 10.17014/ijog.4.1.11-20several outcrops were studied to identify sedimentary facies and to analyze permeability distribution, through which an outcrop analogue for upper shoreface reservoirs can ...

Geochemistry of Late Triassic Weak Peraluminous A-Type Karimun Granite, Karimun Regency, Riau Islands Province

doi: 10.17014/ijog.4.1.21-37karimun is an island with various geological deposits: tin, granite, sand, and others. the tin deposit in karimun is related to the granitoid tin belt which extends from my...

Audio-Magnetotelluric Modeling of Cimandiri Fault Zone at Cibeber, Cianjur

doi: 10.17014/ijog.4.1.39-47the characteristic of cimandiri fault zone has not been completely defined despite plenty of studies had already been accomplished. therefore, an audio-magnetotelluric mode...

Landslide Vulnerability Assessment (LVAs): a Case Study From Kota Kinabalu, Sabah, Malaysia

doi: 10.17014/ijog.4.1.49-59the topic on landslide vulnerability assessment (lvas) in malaysia is relatively new and received little attention from geoscientists and engineers. this research paper tri...

Geochemistry of Natural Gas Seepages in Boto Area, Bancak, Semarang, Central Java

doi: 10.17014/ijog.4.2.61-70three seepage gas samples collected from boto area, bancak, semarang, central java, were studied to determine their chemical characteristics using gc and gc-irms methods. t...

Nanggulan Formation and Its Problem as a Basement in Kulonprogo Basin, YOGYAKARTA

doi: 10.17014/ijog.4.2.71-80nanggulan formation consists of the oldest clastic rock sequence exposed in kulonprogo area, yogyakarta. this paper discusses the position of nanggulan formation as a basem...

Probabilistic Seismic Hazard Analysis Incorporating Monte Carlo Method in the Case of Adelaide Region

doi: 10.17014/ijog.4.2.81-96a topic of seismic hazard analysis (sha) is briefly elaborated. a probabilistic seismic hazard analysis (psha) is commonly used to assess the ground motion level expected w...

ASTER Mineral Classification for Regolith Mapping in Tick Hill Mount Isa, Northwest Queensland

doi: 10.17014/ijog.4.2.97-109this paper analyzed the mineral maps of aloh bearing minerals and iron oxide using aster imagery in tick hill, mount isa, northwestern part of queensland, as a guide for m...

Integrated GIS Based Approach in Mapping Groundwater Potential Zones in Kota Kinabalu, Sabah, Malaysia

doi: 10.17014/ijog.4.2.111-120the shortage of clean water occurs almost everywhere around the world. the demand for water supply increases from time to time due to various problems such as development...

Fracture Characteristics of Mélange Complex Basement in Bantimala Area, South Sulawesi, Indonesia

a detailed geological mapping and fracture characterization had been performed in bantimala area, south sulawesi, indonesia. the geology of the studied area is composed of pre-tertiary metamorphic, se...

Karakteristik Morfologi Dasar Laut dan Hubungannya dengan Kecepatan Arus Laut di Selat Lampa, Natuna, Kepulauan Riau

kondisi morfologi dasar laut dari suatu perairan khususnya di selat dapat mempengaruhi kecepatan arus laut. indonesia sebagai negara kepulauan memiliki banyak pulau dan selat. bertambahnya kecepatan a...