The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and so... more The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and sophisticated megalithic site. Correlations between rock stratifications observed through surface exposures, trenching and core logs, combined with GPR facies, ERT layers, and seismic tomograms, demonstrate the presence of multi‐layer constructions spanning approximately 20–30 m. Notably, a high‐resistive anomaly in electric resistivity tomography aligns with a low‐velocity anomaly detected in seismic tomography, indicating the existence of hidden cavities or chambers within the site. Additionally, drilling operations revealed significant water loss, further supporting the presence of underground spaces. Radiocarbon dating of organic soils from the structures uncovered multiple construction stages dating back thousands of years BCE, with the initial phase dating to the Palaeolithic era. These findings offer valuable insights into the construction history of Gunung Padang, shedding light on...
The Northern Kutai Basin has been considered lacking hydrocarbon prospectivity when it’s compared... more The Northern Kutai Basin has been considered lacking hydrocarbon prospectivity when it’s compared to the Southern Kutai Ba sin or the Eastern Kutai Basin where many Neogene reservoir rocks has high h ydrocarbons productivity. The Kutai Basin’s sediments are older toward northern and western boundary of the Basin which is the Paleogene sediment was cropping out.
The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and so... more The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and sophisticated megalithic site. Correlations between rock stratifications observed through surface exposures, trenching and core logs, combined with GPR facies, ERT layers, and seismic tomograms, demonstrate the presence of multi-layer
Basically, a well postmortem is carried out in order to find out as to why there is no producible... more Basically, a well postmortem is carried out in order to find out as to why there is no producible hydrocarbon in a well despite the existence of favorable geological factors and convincing hydrocarbon shows either during drilling or based on well evaluation of E-logs. Subsequently, result of the postmortem can then be used to determine strategy for the next exploration/appraisal plan. A well postmortem often come up with findings that geologically the well is not really dry but was either considered as dry or inconclusive due to non-geological related factors.
Traditional perception considers the Sumatran splay fault act as boundary of Pre-Tertiary rock an... more Traditional perception considers the Sumatran splay fault act as boundary of Pre-Tertiary rock and Tertiary rock where Pre-Tertiary rock is thrusted (by thrust fault) upon the Tertiary rock, called ‘the Barisan Mountain Thrust Front’. The purpose of this paper is to understand whether the boundary character of Pre-Tertiary and Tertiary rocks in the western margin of the southern end of the North Sumatra Basin is thrust fault boundary or other kind. Method used in this study consists of examination of geological cross section on published geological maps, 2D seismic interpretations, and field observation in Batang Sarangan River, nearby the seismic lines area. The fieldwork result indicates outcrops of Belumai Formation (Tertiary rocks) near the seismic lines. The seismic sections also indicate there is no thrust fault geometry. Moreover, those sections indicate onlap of the Tertiary Rocks onto the Pre-Tertiary Rocks. It is concluded the boundary character of Pre-Tertiary and Tertiary rocks in the western margin of the southern end of the North Sumatra Basin is not necessary as a thrust fault. Hence, the perception of the boundary of Pre-Tertiary rock with Tertiary rock as thrust fault is questionable
The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and so... more The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and sophisticated megalithic site. Correlations between rock stratifications observed through surface exposures, trenching and core logs, combined with GPR facies, ERT layers, and seismic tomograms, demonstrate the presence of multi‐layer constructions spanning approximately 20–30 m. Notably, a high‐resistive anomaly in electric resistivity tomography aligns with a low‐velocity anomaly detected in seismic tomography, indicating the existence of hidden cavities or chambers within the site. Additionally, drilling operations revealed significant water loss, further supporting the presence of underground spaces. Radiocarbon dating of organic soils from the structures uncovered multiple construction stages dating back thousands of years BCE, with the initial phase dating to the Palaeolithic era. These findings offer valuable insights into the construction history of Gunung Padang, shedding light on...
The Northern Kutai Basin has been considered lacking hydrocarbon prospectivity when it’s compared... more The Northern Kutai Basin has been considered lacking hydrocarbon prospectivity when it’s compared to the Southern Kutai Ba sin or the Eastern Kutai Basin where many Neogene reservoir rocks has high h ydrocarbons productivity. The Kutai Basin’s sediments are older toward northern and western boundary of the Basin which is the Paleogene sediment was cropping out.
The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and so... more The multidisciplinary study of Gunung Padang has revealed compelling evidence of a complex and sophisticated megalithic site. Correlations between rock stratifications observed through surface exposures, trenching and core logs, combined with GPR facies, ERT layers, and seismic tomograms, demonstrate the presence of multi-layer
Basically, a well postmortem is carried out in order to find out as to why there is no producible... more Basically, a well postmortem is carried out in order to find out as to why there is no producible hydrocarbon in a well despite the existence of favorable geological factors and convincing hydrocarbon shows either during drilling or based on well evaluation of E-logs. Subsequently, result of the postmortem can then be used to determine strategy for the next exploration/appraisal plan. A well postmortem often come up with findings that geologically the well is not really dry but was either considered as dry or inconclusive due to non-geological related factors.
Traditional perception considers the Sumatran splay fault act as boundary of Pre-Tertiary rock an... more Traditional perception considers the Sumatran splay fault act as boundary of Pre-Tertiary rock and Tertiary rock where Pre-Tertiary rock is thrusted (by thrust fault) upon the Tertiary rock, called ‘the Barisan Mountain Thrust Front’. The purpose of this paper is to understand whether the boundary character of Pre-Tertiary and Tertiary rocks in the western margin of the southern end of the North Sumatra Basin is thrust fault boundary or other kind. Method used in this study consists of examination of geological cross section on published geological maps, 2D seismic interpretations, and field observation in Batang Sarangan River, nearby the seismic lines area. The fieldwork result indicates outcrops of Belumai Formation (Tertiary rocks) near the seismic lines. The seismic sections also indicate there is no thrust fault geometry. Moreover, those sections indicate onlap of the Tertiary Rocks onto the Pre-Tertiary Rocks. It is concluded the boundary character of Pre-Tertiary and Tertiary rocks in the western margin of the southern end of the North Sumatra Basin is not necessary as a thrust fault. Hence, the perception of the boundary of Pre-Tertiary rock with Tertiary rock as thrust fault is questionable
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