63 research outputs found
Geomorfologi Sungai Klawing Daerah Bobotsari, Kabupaten Purbalinggga, Jawa Tengah
No full textKlawing watershed is in Banyumas basin area, Purbalingga, Central Java. The river's flow is cut Tertiary rocks in the mountains of North Serayu, which includes Halang Formation, Kumbang, and Tapak and also Quaternary volcanic rocks of Slamet Volcano. The morphology of the surrounding area of the river is a volcanic mountains of Slamet Volcano in the western, homocline mountainous in the north and the hills / plains in the east and south. Geomorphological processes of Klawing River has formed alluvial deposition and the plain around the river. Alluvial deposits form the terrace around the Klawing River. At least three terrace rivers developed around the study area. The three terrace rivers are each up to elevations of 2.9 m, 22.9 m and 34.9 m from the surface of the Recent river
Struktur Geologi dan Sebaran Batubara daerah Bentian Besar, Kabupaten Kutai Barat, Propinsi Kalimantan Timur
No full textThis study is a surface geological mapping work to determine the geological conditions in the study area and in particular the presence of coal of Bentian Besar District, West Kutai Regency, East Kalimantan Province. The goal is to determine the position and spread of coal layer, coal quality and quantity of coal resources in the study area. Research on the existence of coal deposits is done through field survey methods, by observing, define and measure elements of geological structures encountered. At this stage of field work carried identification, observation, measurement of the coal position and takes it sample. In the study area encountered 2 (two) rock formations, Pamaluan, and Pulubalang Formation. Coal deposits found in rock unit known as Pulubalang Formation. Direction of the dip of the rock layers in the study area form a syncline structure. At this structure of the coal seam, there are three dip directions, namely: rocks on the southeast side of syncline axis tilted toward the northwest, rocks on the northwest side of the syncline axis tilted to the southeast, while the dip of the rocks on the southwest side Syncline tilted toward the northeast
Struktur Lirik Lagu dalam Album Cidro Asmoro Kajian Strukturalisme
No full textThis research was written with the aim to determine the lyric structure of the song in the album Cidro Asmoro using the study of Structuralism. The structure in the lyrics of this song consists of physical structure and inner structure. Physical structure is the structure of the builder of a poem that is physical or fit in the form of word order. While the inner structure is the structure of the poet builder from within or contains the meaning that the author wants to express. The research method used to analyze the physical structure and the inner structure uses a qualitative descriptive method. The data used in this study are words, phrases, and sentences in the lyrics of the song Cidro Asmoro that refer to the structure of the builder. The results found in this study is that there is a physical structure in the form of majas, recitation, diction, concrete words and rhyme in the lyrics of songs in the album Cidro Asmoro. Majas or language styles found include majas personification, metaphor, association, allegory and hyperbole. In addition, also found imagery or imagery in the form of imagery of sight, hearing, taste, touch and movement. The inner structure in the lyrics of Cidro Asmoro's album has themes, tastes, tones and messages. Selection of lyrics and words from Cidro Asmoro's album has a unique characteristic to convey the feelings experienced by the author. This feeling can be from love, disappointment, confusion, anger and even enthusiasm. Cidro Asmoro's album contains the story of a man's love struggle who ultimately has to give up his lover with another man
Sosialisasi Ancaman Bencana Tanah Longsor Di karangkemiri-Pekuncen, Kabupaten banyumas
No full textBencana tanah longsor menjadi momok bagi warga Karangkemiri-Pekuncen-Banyumas pada setiap musim penghujan tiba. Hal ini disebabkan longsor selalu terjadi pada musim hujan di tahun-tahun sebelumnya. Sosialisasi kepada warga guna menanamkan kesiapan melakukan mitigasi mandiri merupakan upaya yang harus dilakukan. Sisialisasi ini dilakukan melalui serangkaian kegiatan kajian pustaka mengenai riwayat longsor di karangkemiri, kajian lapangan dengan melihat lokasi longsor sebelumnya dan kegiatan sosialisasi kepada warga desa. Kesadaran akan adanya ancaman dan bagaimana mensikapi hal tersebut dapat ditanamkan pada masyarakat melalui sosialisasi kondisi batuan, morfologi, tanah, struktur batuan dan penataan lahan di kawasan tempat tinggal warga. Pengetahuan warga akan kondisi lingkungan, menjadikannya mereka memiliki kemampuan mensikapi ancaman bencana dalam pemanfaatan lahan dan pemukiman mereka.
Kata kunci : longsor, hujan, batuan, tanah, struktur. 
Fase-Fase Tektonik Pembentuk Ruang Mineralisasi Emas Di Daerah Selogiri Wonogiri
No full textMetallic mineral deposits in Tumbu Hill and the surrounding area of Selogiri, Wonogiri Regency in Central Java Province formed relate to some process of tectonism. The metallic mineral deposits in this area are the result of epi thermal processes, filling previousl y existing fractures. This fracture system is closely related to structures that are the result of regional tectonic phases. Veins in the research area strike in many different directions and each has distinct metallic content from the others. This research utilizes the know ledge of result of magmatism process and also regional tectonic phases which formed the fractures where the veins are located and relationship with veins direction that have potential metallic content especially gold and silver
Kontrol Struktur Pada Longsor di Daerah Sampang-Karangkobar Kabupaten Banjarnegara Jawa Tengah
No full textBencana longsor merupakan ancaman bagi masyarakat di daerah pegunungan di seluruh Indonesia. Bencana ini terjadi karena berbagai faktor penyebab. Masalah yang di kaji dalam penelitian ini adalah mengetahui kelurusan struktur, morfologi dan batuan daerah longsor Sampang-Karangkobar. Kompleksitas struktur terterntu, morfologi yang terjal dan litologi tertentu dapat menjadi pemicu bagi fenomena longsor. Metode penelitian dilakukan dengan pengamatan lapangan dan analisis kelurusan peta. Pengamatan morfologi dan kelerengan topografi dilakukan di peta dan di lapangan. Daerah Sampang-Karangkobar tersusun atas batulempung dengan sisipan pasir karbonatan sebagai batuan yang tertua dan juga tersusun atas breksi sebagai batuan yang lebih muda. Batulempung merupakan batuan yang mudah tererosi. Pengikisan batulempung tua di bagian bawah menyebabkan labilnya masa breksi diatasnya. Daerah penelitian merupakan zona pertemuan kelurusan struktur geologi yang mengenai batulempung dan breksi yang memiliki morfologi terjal
Potensi Bencana Geologi Pada Penambangan Emas dan Lempung di Desa Cihonje Kecamatan Gumelar Kabupaten Banyumas
No full textDesa Cihonje di Kecamatan Gumelar, Kabupaten Banyumas, memiliki sumber daya mineral seperti emas dan tanah liat kaolin. Kedua mineral ini telah dilakukaneksploitasi oleh masyarakat setempat. Pemanfaatan sumber daya ini telah memberikan kemakmuran bagi warga setempat. Namun, upaya pertambangan tidak dalam kondisi baik dan masih belum berlisensi. Penggalian emas dan tanah liat di sekitar area perumahan telah membawa dampak yang sangat mengkhawatirkan terhadap keselamatan para penambang dan lingkungan sekitarnya. Penelitian ini pada potensi bencana yang mungkin menjadi ancaman bagi masyarakat setempat dilakukan dengan pengamatan langsung. observasi lapangan ini dilakukan dengan memetakan lokasi operasi pertambangan, perubahan lingkungan dilakukan deskripsi, mengambil gambar dan wawancara dengan penduduk dan para penambang. pertambangan emas primer mengambil urat mineral dengan membuat sumur vertikal dan horizontal. sumur ini sangat dalam dan mencapai puluhan meter. Hal ini telah mengancam keselamatan para penambang, mengganggu penggunaan lahan sebagai daerah pertanian, yang mempengaruhi ketersediaan sumber air tanah, menyebabkan tanah longsor dan mencemari sumber air sungai. pertambangan emas sekunder pada deposito aluvial di tepi sungai telah menyebabkan kerusakan lahan pertanian, erosi sungai dan pencemaran air. Pertambangan tanah liat telah menyebabkan perubahan dalam pengaturan lingkungan dan potensi longsor
Potensi Sumberdaya Batubara di Daerah Petak Malai, Kabupaten Katingan, Provinsi Kalimantan Tengah
No full textAdministratively, research area ( 9.930 Ha) is located at Petak Malai District, Katingan Regency, Central Kalimantan Province. This research is aimed to know the coal outcrop position, the number of coal seam and to measure of coal resources. The research is done by geological mapping of coal and other lithology at the field. The next phase is correlate some of coal outcrop and make a geological map. The last phase is calculating measured resource and indicated resource of all coal seams.There are ten of coal outcrops in the research area. The ten coal outcrop can be correlate and it becomes three coal seams which have 0.13 m to >0.7 m thick. This coal outcrop is found at Claystone-Sandstone Unit of Dahor Formationwhich lies at central part of the research area. Measured resource of coal resources calculation of research area is 873,050.1 ton. Indicated resource of this research area is 4,524,346 ton.Geological structure formed in the study area is fold and joint. The fold axis is relatively north-south trend. Anticline and syncline fold are the main control of the coal spread
Potensi Batuan Induk Batu Serpih dan Batu Lempung di Daerah Watukumpul Pemalang Jawa Tengah
No full textShale and claystone of Watukumpul Area have capability to become the source rock of hydrocarbon because of the ability to conserve the organic material better. Potential of the rock become source rock is depend on its maturity and total organic carbon.
This research test eight example of rock to analysis their total organic carbon (TOC) and rock eval pyrolisis. Only one sample is claystone, while the seven others are shales. The analyses provide data of total organic carbon, hydrogen index, and vitrinite reflectances which was used to interpret source rock potential of research area.
Through this research is known that the organic material content of shale and claystone of research area own the fair level of total organic carbon. Organic material is included Kerogen Type III with the origin of land organism or plant.
These kerogens of research area prefer to produce gas or gas prone. Organic material or kerogens have reached the matured phase to generate hydrocarbon (mature level). Special follow the rock sample came from Location 8 which have over mature level. Its high maturity is suspect have relationship with the intrusion of diorite igneous rock in this research area. Further research is needed to investigate the relationship between diorite intrusion and organic material in this research area
STUDI PENDAHULUAN GEOLOGI GUA LAWA DI PURBALINGGA, JAWA TENGAH
No full textLawa Cave in Purbalingga Regency is a special type of cave as it formed not at calcareous rocks like at the usual cave. It is formed by lava flow processes. So, it is made of an igneous rock and it has an andesit basaltic rock type. Lawa Cave formed due to lava flow of the volcanic eruption of the Old Slamet Volcano. The rocks composition of Lawa Cave consists of primary minerals that are plagioclase and volcanic glass and some secondary mineral like calcite and ferri oxide which is fill the previous gas pores. Generally, rock fractures in Lawa Cave is formed as primary joint when the lava flow was cooling down, tectonic joints is found very limited. Lawa Cave’s direction is controlled by the flow direction of the melting lava. It’s direction indicate the paleomorphology of the volcano
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