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All Journal Jurnal Ekonomi, Bisnis dan Kewirausahaan (JEBIK) ProBank: Jurnal Ekonomi dan Perbankan Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) AMAR (Andalas Management Review) Jurnal Cahaya Mandalika Altifani Journal: International Journal of Community Engagement Jurnal Ilmiah Bisnis dan Ekonomi Asia (Jibeka) CITAKARYA Jurnal Pengabdian Masyarakat CITACONOMIA : Economic and Business Studies
Budi Setyanta, Budi
Fakultas Ekonomi Universitas Janabadra Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Social Sciences

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POLA STRUKTUR DAN GEODINAMIKA CEKUNGAN BULA, BERDASARKAN ANOMALI GAYA BERAT Setyanta, Budi; Setiadi, Imam
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 1 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

Gravity is one of the geophysical methods that can be used to estimate subsurface condition based on the density of rocks. Seram bouguer anomaly map reduced by density 2.67 gr/cc indicates negative anomaly pattern in Bula Basin with anomaly range between ( -50 mgal – 0 mgal). Gravity data analyses were carried out by separating the residual and regional anomalies using moving average filtering and second vertical derivative. The subsurface modeling was done by using gravmag forward modeling software. The results show two regional faults i.e. the norteast-sothwest strike slip fault and the east-west thrust fault. Those faults have different periods. The filtering using moving average and second vertical derivative shows closure areas and fold within Pretertiary rocks that geologically are interesting features.Keywords : Gravity, moving average, second vertical derivative, Bula Basin
KONFIGURASI GEOLOGI BAWAH PERMUKAAN CEKUNGAN SEDIMEN DAERAH LONG BIA-MUARA WAHAU, KALIMANTAN TIMUR, BERDASARKAN ANALISA ANOMALI GAYABERAT Setyanta, Budi
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 4 (2016): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Peta anomali Bouguer Lembar Long Bia-Muarawahau memperlihatkan kenampakan daerah rendahan dan daerah tinggian dengan beberapa daerah spot-spot bulatan kecil anomali positif. Dua model bawah permukaan geologi AB dan CD berdasarkan data gayaberat memperlihatkan bahwa batuan alas daerah ini adalah kerak granitik dan fragmen-fragmen ofiolit. Model bawah permukaan geologi CE dibuat untuk menjelaskan geodinamika daerah tersebut. Model bawah permukaan gayaberat yang berbasis tektonik kompresi dan sesar-sesar anjak cocok untuk diterapkan di daerah Longbia-Muara Wahau karena sesuai dengan perkembangan tektonik di kawasan Laut Cina Selatan dan Selat Makassar. Cekungan sedimen yang terbentuk di bagian barat lebih disebabkan oleh lenturan kerak bagian bawah (deformasi plastis) yang diikuti sedimentasi. Kata Kunci : Anomali Bouguer, model bawah permukaan gayaberat, geodinamika, tektonik kompresi
PENENTUAN UMUR FOSIL MANUSIA PURBA DI JAWA BERDASARKAN MAGNETOSTRATIGRAFI Setyanta, Budi; Siagian, Harry Parulian; Wahyono, Hendro
Jurnal Geologi dan Sumberdaya Mineral Vol 15, No 1 (2014): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Studi magnetostratigrafi telah dilakukan di daerah Sangiran, Trinil, Kedungbrubus, Mojokerto dan Patiayam. Hasil penelitian menunjukkan bahwa fosil manusia purba di Sangiran berada antara batas bawah subkron Jaramilo sampai batas krono Brunhes/Matuyama atau berumur 0.78 – 1.070 juta tahun yang lalu (jtl). Di Mojokerto fosil manusia purba pada batas bawah subkron Jaramillo atau berumur 1.070 jtl, di Trinil pada batas atas Jaramillo atau 0.990 jtl. dan di Patiayam pada posisi di Brunches atau berumur lebih muda dari 0.78 jtl. Manusia purba tertua di Jawa dijumpai di Sangiran dan yang termuda dijumpai di Patiayam, sedangkan di Kedungbrubus tidak jelas lokasi penemuannya.Kata kunci : Fosil manusia purba, magnetostratigrafi, Sangiran
MENGURANGI AMBIGUITAS DALAM PEMODELAN BAWAH PERMUKAAN GAYA BERAT UNTUK GEOLOGIAWAN Setyanta, Budi
Jurnal Geologi dan Sumberdaya Mineral Vol 16, No 1 (2015): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Interpretasi anomali gayaberat memberikan hasil yang tidak unik yaitu untuk satu penampang anomali gayaberat dapat memberikan hasil yang bermacam-macam (sifat ambiguity). Seorang interpreter dapat mengurangi ambiguitas model bawah permukaan gayaberat secara sederhana dengan berbagai cara sesuai dengan ketersediaan data pendukung yang lain. Cara-cara tersebut diantaranya adalah dengan data bor atau data seismik, selain itu dapat juga dilakukan dengan menggabungkan data gayaberat dengan data geomagnet pada lintasan yang sama. Selain itu dapat juga dilakukan dengan membuat penampang koreksi rapatmassa batuan sehingga didapatkan nilai rapatmassa yang sesuai. Cara-cara tersebut terbukti dapat mengurangi ambiguitas dalam pemodelan bawah permukaan gayaberat bahkan untuk pekerjaan eksplorasi sekalipun. Namun demikian pemahaman tentang geologi dan tektonik daerah yang diteliti mutlak harus diketahui oleh interpreter.Kata kunci : Model gayaberat, ambiguitas, data pendukung lain, pemodelan
MEDAN GAYA BERAT PADA BATUAN OFIOLIT (ULTRAMAFIK) DI BEOGA, PAPUA DAN IMPLIKASI TERHADAP GENESIS ALIH TEMPATNYA Setyanta, Budi; Widijono, Bambang Suci
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 3 (2009): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

In Beoga, Puncak Jaya, Papua, a group of ultramafic rocks consisting of piroxenite, dunite, serpentenite and peridotite are exposed. The distribution of these rocks are very large, lying alongside east - west direction, reaching 50 km and 100 km long. The gravity fields in this region exhibit an elliptic gravity anomaly pattern ranging from -25 to 160 mGals. The gravity modelling and geological analysis suggest that ophiolite has been fragmented and exposed due to obduction, caused by an interaction between Pacific oceanic and Australian granitic plates. This tectonic setting may cause Mulia and its surrounding area to be susceptible to geological hazards such as earthquake and landslides. Keywords : gravity potentials, ophiolite, genesis, geology potential
MEDAN GAYA BERAT DAN MODEL GEODINAMIKA DI SEKITAR KEPULAUAN KAI DAN KEPULAUAN ARU, MALUKU Setyanta, Budi
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 6 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

A gravity measurement was done to study geodynamic model in Kai and Aru islands. Bouguer anomaly in Kai-Aru region can be separated into two groups namely, western part of anomaly group with slighth up and down sharp gradient and the eastern part of anomaly group which is slightly smooth. Both groups of anomaly range from -180 mgals to 200 mgals and is interpreted that the lithologies in that area are underlain by continental crust. A geodynamic hypothesis around Kai-Aru islads based on subsurface gravity model shows that the Kai islands are constructed by thrusting mechanism whereas the Aru islands are by drifting mechanism and followed by gravitational tectonic mechanism. Both mechanism are influenced by changing mechanism from compressional to extentional tectonic regime.Key words : Bouguer anomaly, tectonic mechanism, geodynamics, Maluku
SINYAL GEOMAGNETIK DI CEKUNGAN SENGKANG IMPLIKASI TERHADAP POLA STRUKTUR DAN KONFIGURASI BATUAN ALAS CEKUNGAN Setyanta, Budi; Subagio, Subagio
Jurnal Geologi dan Sumberdaya Mineral Vol 23, No 2 (2013): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The intensity of magnetic anomalies at Sengkang Basin varies from -750 nTto 400 nT. Basin configuration and subsurface geological structues can be analysed by modelling of the magnetic signal of ultramafic basement. Geomagnetic analisis indicates that the Sengkang Basin is underlain by high magnetic ultrabasic rocks, and the geological structures consit of a NE-SW fold, crossedcut by a NW-SE fault. Keywords: Geomagnetic signals, Sengkang basin, ultramafic basement configuration, geological structures.
Model Kerak Daerah Busur Muka di Pulau Siberut dan Perairan di Sekitarnya Berdasarkan Analisis Anomali Gayaberat Setyanta, Budi
Jurnal Geologi dan Sumberdaya Mineral Vol 16, No 2 (2015): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

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Abstract

Tersedianya informasi gayaberat, kegempaan, ketebalan sedimen dan kedalaman air laut di daerah Pulau Siberut dan perairan sekitarnya memberi peluang untuk dilakukan pemodelan struktur kerak. Hasil penafsiran data gayaberat daerah Pulau Siberut menunjukkan bahwa nilai anomali daerah ini dapat dikelompokkan menjadi tiga bagian, yaitu kelompok dengan nilai rendah, tinggi dan sedang, yang masing-masing menggambarkan daerah palung laut, daerah akresi dan daerah busur vulkanik. Model gayaberat berbasis perhitungan dengan pemilihan nilai rapatmassa dan geologi bawah permukaan menunjukkan bahwa daerah akrasi dan palung laut sebelah barat dialasi oleh kerak samudera dan kerak akresi (kerak bancuh) sedangkan daerah palung laut sebelah timur dan busur vulkanik dialasi oleh batuan alas kerak peralihan atau kerak andesitik.Kata Kunci - Anomali Gayaberat, pemodelan, struktur geologi bawah permukaan, kerak, Pulau Siberut
MODEL GEOLOGI BAWAH PERMUKAAN DAERAH MUARAWAHAU HASIL ANALISIS ANOMALI GAYA BERAT BERDASARKAN ESTIMASI KEDALAMAN DENGAN METODE ANALISIS SPEKTRAL Setyanta, Budi; Setiadi, Imam; Simamora, W.H.
Jurnal Geologi dan Sumberdaya Mineral Vol 18, No 6 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

A Study about a depth estimation on a gravity model in Muarawahau quadrangle, East Kalimantan, by using a Spectral Analysis method is very helpful to reduce ambiguity that appears in each modeling. The qualitative analysis shows that high anomalies lay at the eastern part of  the research area with values between  10 - 55 mgal, while low gravity anomalies between  -60 to 9 mgal lay at the western area. Two groups of anomaly in this area reflect a basin and basement high which is separated by a regional strike slip fault . A Model resulted  from  East to West  profiling and supported by a Spectral Analyses Method shows that the basin is constructed by PreTertiary rocks with density of about 2.6 gr/cc and thickness approximately 5 km, experiencing tectonic deformation. The eastern high anomaly block is the reflection of ultramafik rocks and mélange with the density of about 2.65 gr/cc. Rocks in this block is partly covered by volcanic sediments abaut 500 meter thich (2.3 gr/cc). However based on the values of anomaly, those two blocks are still underlined by the same granitic continent, meanwhile the existing ultramafic rocks are only ophiolite fragmen of oceanic crust. Keywords : Gravity anomaly, depth estimation, geological model.
ANOMALI GAYA BERAT, KEGEMPAAN SERTA KELURUSAN STRUKTUR GEOLOGI DAERAH JOGJAKARTA DAN SEKITARNYA S.Widijono, Bambang; Setyanta, Budi
Jurnal Geologi dan Sumberdaya Mineral Vol 17, No 2 (2007): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

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Abstract

The region of Jogjakarta and the surrounding area which are generaly covered by young sediment, consist of aluvium and volcanic deposits. Because of this phenomenon, lateral and vertical distribution of geological structural element are still unknown. Therefore, gravity data analysis is a good tool to delineate geological structural element burried by young sedimentdeposits. Regional and local geological structural lineaments which are detected by Bouguer and residual gravity anomaly analyses, inform that deformation processes have occurred intensively in this area. The occurrences of east-west trending fold and northeast-southwest trending thrust fault, northwest-southeast trending strikeslip fault, and north-south trending normal fault indicate that deformation process was caused by north-south compressional principal stress generated by subduction Eurasian plate and Indo-Australian plate. Gravity modelling analysis of AB and CD sections indicate the presence of strike slip fault, thrust fault and normal fault within the basement and Tertiary rocks. Several faults, such as Bogowonto, Nanggulan, Sentolo, Imogiri and Opak Faults, are interpreted to be reactivated and faulted the Quarternary deposits. Earthquake hazard that took place in Jogjakarta and th surrounding area on May 27 , 2006 by the reactivation of Opak Fault. Referring to this experience, the study of active faults in this area is necessary. Keywords : anomaly, gravity, geological structure, earthquake
Co-Authors Amri, Wildan Mustahiqul Andika Andika Anisah, Tiara Nur Arditia, Sofian Bambang S.Widijono, Bambang Bambang Suci Widijono, Bambang Suci Bere, Hilebrodus Alfin Rivaldo Budiman, Samsin Dwiwinarno, Titop Ekawati, Naomi Safira Ema, Monika Sastria Yuliana GESTY ERNESTIVITA Gosa, Emanuel Gusmao, Tomasia Efrasia Handayani, Krysty Hardono Hardono, Hardono Harry Parulian Siagian, Harry Parulian Hendro Wahyono Imam Setiadi, Imam Jayaningrum, Siti Kusandhitasari Jebarus, Bertoldus Kadi, Dian Citaningtyas Ari KUNTO WIBISONO Najmudin, Mohamad Ningsih, Wiwin Syaputri Petra Surya Mega Wijaya, Petra Surya Prasetyo, Hangga Catur Putra, Reska Anggara Ratih Ari Indriyani, Agnes Rifata, Imana Dien Sejati, Gilang Vitra Subagio Subagio, Subagio Sulistyo Summa Gaina, Renius Toatubun, Geraldo Yesaya W.H. Simamora, W.H. Widianto, Adi Wijaya, Perta Surya Mega