Artikel Ilmiah : H1F007059 a.n. HARTSUL ASIS
| NIM | H1F007059 |
|---|---|
| Namamhs | HARTSUL ASIS |
| Judul Artikel | GEOLOGI DAN STUDI KARAKTERISTIK PEPERIT DAERAH TUNJUNGMULI DAN SEKITARNYA KECAMATAN KARANGMONCOL KABUPATEN PURBALINGGA PROVINSI JAWA TENGAH |
| Abstrak (Bhs. Indonesia) | Lokasi penelitian secara administratif berada di Desa Tunjungmuli Kecamatan Karangmoncol Kabupaten Purbalingga Jawa Tengah. Secara Geografis daerah penelitian terletak pada 109.460˚BT - 109.500˚BT dan 7.250˚LS – 7.290˚LS, Daerah penelitian memiliki luas 25 km2 dengan ukuran 5 x 5 km. Penelitian bertujuan untuk memahami kondisi geologi dari karakteristik peperit didaerah penelitian. Satuan geomorfologi daerah penelitian berupa Satuan Perbukitan Hogback Balekrasa dan Satuan Perbukitan Homoklin Panusupan. Tahapan geomorfik daerah penelitian adalah muda ke tua dan Pola aliran sungai pada daerah penelitian adalah pola aliran sungai dendritik. Struktur gelogi yang ditemukan di daerah penelitian merupakan sesar mendatar kanan naik (thrust right slip fault) yang berarah Baratlaut-Tenggara. Arah tegasan utama berarah Timurlaut-Baratdaya. Tatanan stratigrafi daerah penelitian terdiri atas tiga satuan batuan. Urutan stratigrafi daerah penelitian dari tua kemuda yaitu Satuan Breksi, Satuan Patupasir, Satuan Batulempung. Pada daerah penelitian peperit ditemukan berasosiasi dengan lava bantal, secara megaskopis tampak berwarna hijau dengan kekerasan 6,5-7 skala mohs dan tekstur umum yang halus, sedangkan dilihat dari segi petrogarifis peperit berwarna kehijauan, bertekstur klastik, terdiri atas butiran berupa 2 % plagioklas, 2 % Mineral opak, dan 2 % kuarsa. Tertanam dalam 94 % matriks pecahan gelas berukuran sangat halus, yang sebagian besar telah terubah menjadi mineral lempung klorit. Analisis kimia dilakukan dengan analisis XRF, dimana terlihat perbedaan SiO2 pada peperit dengan lempung dikarenakan adanya proses silisifikasi antara basalt dan lempung. |
| Abtrak (Bhs. Inggris) | This research was conducted administratively in Tunjungmuli Village, Karangmoncol, Purbalingga, Central Java. Geographically, the research area lies in 109.460˚ EL – 109.500˚ EL and 7.250˚SL – 7.290˚SL. The research area was 25 km2 with a size of 5 x 5 km. The study aims to know about geological conditions of the characteristic peperit in the research areas. Geomorphology unit area of the research was in the form of Hogback Balekrasa and Panusupan Homoklin Hills Units. Research geomorphic stages area were youth to old age. River flow patterns in the research area were dendritic stream pattern. Geological structure found in the research area was a right thrust slip fault trending Northwest-Southeast. The principal stress trending was Northeast-Southwest. Stratigraphic order of the research area consists of three stones with stratigraphic sequence of the research areas were old age to youth. They were Breccia, Sandstone, and Claystone Unit. In the research area, peperit found associated with pillow lava, in megaskopis were a green with hardness 6,5-7 mohs scale and the textures that are glassy, in commonly peperit are greenish while seen in terms of petrogarifis, it is clastic textured, it consists of granules in the form of 2 % plagioclase, 2 % mineral opac, and 2 % quartz. Embedded in 94 % of matrices a cracked glasses were undersized very fine, most of which have been changed into mineral of chlorite clays. The chemical analysis to be done with an analysis XRF, it show differences SiO2 on peperit with clay, because it exist the process of silicification between basalt and clay. |
| Kata kunci | Karangmoncol, stratigrafi, peperit, lava bantal. |
| Pembimbing 1 | ADI CANDRA, S.T., M.T. |
| Pembimbing 2 | SISWANDI, S.T., M.T. |
| Pembimbing 3 | |
| Tahun | 2014 |
| Jumlah Halaman | 11 |
| Tgl. Entri | 2014-08-27 14:35:05.470553 |