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All Journal Bulletin of Scientific Contribution : Geology

Adi Hardiyono

Fakultas Teknik Geologi Universitas Padjadjaran

Author-ID : 2694768

Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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SISTEM PANAS BUMI DAERAH KALAWAT, KABUPATEN MINAHASA UTARA, PROVINSI SULAWESI UTARA Riza Asyari Yamin; Aton Patonah; Adi Hardiyono; Muhammad Nur Hadi
Bulletin of Scientific Contribution: GEOLOGY Vol 13, No 1 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Kalwat Geothermal Field administratively is located in North Minahasa District, North Sulawesi Province. Litologies of this research area divided by pyroclastic flows and lava. The heat source of this location comes from Mahawu Mountain that located in the southwest outside the research area. Lithology which acts as the cap rock layer is form by pyroclastic flow that has clay minerals which impermeable. Based on petrographic and PIMA abalysis, the alteration minerals that arise are dominated bu montmorillonite and halloysite, so the alteration type of this research area is argilic type and located at the northwest and southwest of research area. The water type that appears are dilute chloride-bicarbonate type and bicarbonate type. Based on the calculation of paleotemperature and geothermometer, there is increase of temperature during the form of mineral and the recent temperature. This is due to increased of volcanic activity in the research area. This research area is water-dominated and moderate temperature system that has range of temperature at 209-2100 C.

KARAKTERISTIK BATUAN BEKU ANDESIT & BREKSI VULKANIK, DAN KEMUNGKINAN PENGGUNAAN SEBAGAI BAHAN BANGUNAN DAERAH UKIR SARI, KECAMATAN BOJONEGARA KABUPATEN SERANG, PROVINSI BANTEN Adi Hardiyono -
Bulletin of Scientific Contribution: GEOLOGY Vol 11, No 2 (2013): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The purpose study to recognize compatibility utilization igneous rock and volcanic breccia in research area based on rock characteristic and rock engineering properties. Igneous and volcanic breccias in the study area can be used as a basic building materials but need to be investigated compatibility use in accordance with the characteristics and properties owned engineering standards prevailing rock.

ALTERASI DAN MINERALISASI DAERAH GUNUNG BULEUD, DESA GARUMUKTI, KECAMATAN PAMULIHAN, KABUPATEN GARUT, PROVINSI JAWA BARAT Rangga Suteja; Mega Fatimah Rosana; Adi Hardiyono
Bulletin of Scientific Contribution: GEOLOGY Vol 14, No 2 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Research area is located in Garumukti, Pamulihan Region, Garut District, West Java Province. The purpose of this research is to determine alteration zone and mineralization type of the research area. Research methods include field observations survey and continued by laboratory analysis (petrography, mineragraphy and SWIR Terraspec analysis). The result indicated, there are three alteration zones: sub-propylitic (chlorite, illite, muscoivite, smektite-illite, muscovitic-illite), advance argilic (kaolinite, dickite, pyrophyllite) and silicification zone (quartz, cristobalite, chalcedony). Thin vein < 5 cm width, show quartz texture of mosaic/saccharoidal, colloform-crustiform bands, bladed and granule. Dissemination, interlocking and vein-like ore texture are found in this research area on pyrite, chalcopyrite and sphalerite. The mineral alteration assemblages of the deposit indicated that this research area is epitermal high sulphidation. Keyword: Gunung Buleud. Alteration, Mineralization, Epithermal High Sulphidation Daerah penelitian terletak di Desa Garumukti, Kecamatan Pamulihan, Kabupaten Garut, Provinsi Jawa Barat. Penelitian bertujuan untuk mengetahui tipe alterasi dan mineralisasi serta sebarannya di daerah penelitian. Metode penelitian yang dilakukan adalah pemetaan geologi dan analisis laboratorium (analisis petrografi, mineragrafi dan SWIR Terraspec). Berdasarkan hasil penelitian di lapangan dan analisis laboratorium daerah penelitian terbagi menjadi tiga zona alterasi yaitu zona sub-propilitik (klorit, ilit, muskovit, smektit-ilit, muskovit-ilit), zona argilik lanjut (kaolinit, dikit, piropilit) dan silisifikasi (kuarsa, kristobalit, kalsedon). Terdapat vein tipis (<5 cm) dengan tekstur berupa mosaic/saccharoidal, colloform-crustiform bands, bladed dan granular. Sementara pada zona silisifikasi setempat2 terdapat tekstur vuggy. Tekstur mineral bijih yang ditemukan meliputi diseminasi, interlocking dan vein-like. Mineral bijih yang di temukan di daerah penelitian berupa mineral pirit, kalkopirit dan sfalerit. Tipe endapan alterasi mineral daerah penelitian mengindikasikan tipe endapan epitermal sulfida tinggi. Kata kunci: Gunung Buleud, alterasi, mineralisasi, epitermal sulfida tinggi

POTENSI ENDAPAN EMAS SEKUNDER DAERAH MALINAU, KALIMANTAN TIMUR Adi Hardiyono
Bulletin of Scientific Contribution: GEOLOGY Vol 12, No 1 (2014): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc geology.v12i1.8359

The purpose study to recognize and interprete resources of gold deposit in Long Agung, Malinau District, East Kalimantan Province. The field work also to interprete system of gold deposit in research area.

POTENSI GEOWISATA DI KAWASAN TELUK CILETUH, SUKABUMI, JAWA BARAT Adi Hardiyono; Ildrem Syafri; Mega F. Rosana; Euis Y. Yuningsih; Herry -; Suci Sarah Andriany
Bulletin of Scientific Contribution: GEOLOGY Vol 13, No 2 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Ciletuh be local Geopark since August 2014, and now towards preparing to become a National Geopark. This geopark is proposed by the government of Sukabumi in 2014. Remains of the geology in this geopark is the emergence of ophiolite complex as a result of fossil tectonic subduction between the Eurasian plate and the Indo-Australian Plate at the age cretasius. Geomorphology tectonic activity form the shape known as the Ciletuh amphitheater, and also the unique shapes result of water erosion that formed the rocks that looks into unique shapes like dragon-stone, frogs-rock, buffalo-stone. etc. There is also the conservation of green turtles and other wild animals such as sea eagles, panthers also conservation Raflesia flowers, Cantigi and mangrove forests to support geopark Ciletuh. Geopark Ciletuh can be divided into four complexes, namely Geoarea Tamanjaya, Geoarea Ciwaru-Mount Rhinos, Geoarea Citisuk-Cikepuh and Geoarea Citirem Ujunggenteng.Some programs geotrek made to visit geoarea either road, or by sea with a boat, also made supporting facilities such as hotels, homestays, local guides and signs.

GEOWISATA GEOPARK CILETUH: GEOTREK MENGELILINGI KEINDAHAN MEGA AMFITEATER CILETUH (THE MAGICAL OF CILETUH AMPHITHEATER) Suci Sarah Andriany; Mega Rosana Fatimah; Adi Hardiyono
Bulletin of Scientific Contribution: GEOLOGY Vol 14, No 1 (2016): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Ciletuh National Geopark region which administratively located in the District of Ciemas and Ciracap, Sukabumi, West Java province has a unique geodiversity and showed the oldest rocks in West Java. Because the geological characteristic that is not found in other places makes Ciletuh as National Geopark in Indonesia. In carrying out the Geopark concept, supporting activities that related with sustainable economic on that area, called Geotourism. The objective of this paper is to determine the Geotourism potential activities to do in the Ciletuh National Geopark, particularly reviewing Ciletuh Amphitheatre. The method used in this study is divided into three processes: starting from literature research areas and collection of field data as one step in the inventory of geological sites (geosites), followed by analysis and classification of data in accordance with the goal of this research. Geotrek with the theme of "The Magical of Ciletuh Amphiteather" will guide us to surround and learn the beauty of the the Ciletuh Amphitheater ciletuh focusing on geosites which contained on amphitheater form, namely: 8 (eight) waterfalls and two (2) Ciletuh scenery spots. Keywords : Ciletuh Amphiteather, Geotrek, Geotourism, National Geopark Ciletuh Kawasan Geopark Nasional Ciletuh yang secara administratif termasuk dalam wilayah Kecamatan Ciemas dan Ciracap, Kabupaten Sukabumi, Propinsi Jawa Barat memiliki keragaman geologi yang unik dan merupakan tempat tersingkapnya batuan tertua di Jawa Barat. Karena ciri khas geologinya yang tidak di temukan di tempat lain menjadikan Ciletuh sebagai Geopark (Taman Bumi) Nasional di Indonesia. Dalam menjalankan konsep Geopark tersebut, diperlukan suatu aktivitas penunjang penggerak aktivitas ekonomi yang berkelanjutan berupa geowisata. Tujuan dari pembuatan karya ilmiah ini ialah untuk mengetahui potensi aktivitas geowisata yang dapat dilakukan di Geopark Nasional Ciletuh, khususnya mengkaji Amfiteater Ciletuh. Metode yang dipakai di dalam penelitian ini terbagi menjadi 3 proses: dimulai dari studi literatur daerah penelitian dan pengambilan data lapangan sebagai salah satu langkah dalam inventarisasi situs-situs geologi, diikuti dengan analisis dan klasifikasi data sesuai dengan fokus penelitian. Geotrek dengan tema “The Magical of Ciletuh Amphiteather” akan memandu kita untuk mengelilingi dan memaknai keindahan mega amfiteater ciletuh yang berfokus pada situs-situs geologi hasil bentukan amfiteater tersebut, yaitu: 8 (delapan) air terjun dan 2 (dua) tempat memandang morfologi Ciletuh. Kata Kunci : Amfiteater Ciletuh, Geotrek, Geowisata, Geopark Nasional Ciletuh

KARAKTERISTIK PETROLOGI DAN GEOKIMIA BATUAN PIROKLASTIK DAERAH SERAWET PROVINSI SULAWESI UTARA MOHAMAD AKBAR SYAH; Mega Fatimah Rosana; Adi Hardiyono
Bulletin of Scientific Contribution: GEOLOGY Vol 18, No 2 (2020): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc geology.v18i2.28942

Daerah Serawet, Sulawesi Utara memiliki sebaran batuan piroklastik yang cukup luas, sebagai aktifitas gunungapi berumur kuarter. Tulisan ini membahas mengenai karakteristik dari batuan piroklastik melalui pendekatan petrologi, petrografi, dan analisa geokimia menggunakan empat sampel batuan piroklastik pada daerah penelitian. Hasil analisis megaskopis dan petrografi menunjukan bahwa batuan piroklastik berupa Tuf kasar berjenis tuf gelas berdasarkan identifikasi komposisi mineralogi dari hasil analisis petrografi. Analisis geokimia major elemen menunjukan bahwa batuan berjenis dasit dan andesit. Seri magmatik tergolong kedalam seri magma “Kalk alkali” dan afinitas magmanya termasuk “Kalk- alkali tinggi”. Penentuan asal magma menunjukan bahwa magma berinteraksi dengan kontinen sedangkan kandungan Al2O3 yang cukup tinggi serta nilai TiO2 dan MgO yang rendah pada batuan piroklastik mengindikasikan bahwa batuan pada daerah penelitian termasuk kedalam setting tektonik busur kepulauan (Green, 1980 dalam Wilson, 1989).

KETERDAPATAN BAHAN GALIAN GALENA DI DAERAH CIGEMBLONG, KABUPATEN LEBAK, PROPINSI BANTEN Mega Fatimah Rosana -; Euis Tintin Yuningsih -; Adi Hardiyono -
Bulletin of Scientific Contribution: GEOLOGY Vol 5, No 3 (2007): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

The objective of the research is to identified and investigated the occurrence of lead, its distribution, size, formation, quantity and quality in the district of Cigemblong, regency of Lebak, province of Banten as a guide for advance investigation. Several samples collected and analyzed petrographically to identified rock, alteration and ore mineral variation as well as geochemistry analysis by XRF method.The stratigraphic units of the research area can be classified into three rock units, such as from oldest to youngest one are carbonaceous claystone, tuf, andesitic – dioritic intrusive, and volcanic breccia units. Three alteration types in the research are are prophylitic, argillic, and silicification alteration.Field investigation concluded that mineralization occurred as mineralization zone of quartz veins with N – S and NE – SW direction, partially as thin lensing in claystone unit. Otherwise the distribution are limited, and separated each other. So, it is difficult to trace the vein zone and lensing as same vein.The characteristic of the mineralization zone gangue minerals dominated composed of quartz, calcite and clay mineral, with ore minerals of pyrite

Co-Authors Aton Patonah Euis Tintin Yuningsih Euis Y. Yuningsih Herry - Ildrem Syafri Mega F. Rosana Mega Fatimah Rosana Mega Fatimah Rosana Mega Fatimah Rosana - Mega Rosana Fatimah MOHAMAD AKBAR SYAH Muhammad Nur Hadi Rangga Suteja Riza Asyari Yamin Suci Sarah Andriany Suci Sarah Andriany

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