The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation”
<p>DOI: <span><a href="http://dx.doi.org/10.17014/ijog.v5i4.109" target="_blank">10.17014/ijog.v5i4.109</a></span></p><p>Gajahmungkur is a Tertiary paleovolcano located in Wonogiri Regency, Central Java. The volcanic product of this volca...
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| Format: | Article |
| Language: | English |
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Geological Agency
2014-06-01
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| Series: | Indonesian Journal on Geoscience |
| Subjects: | |
| Online Access: | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/109 |
| _version_ | 1818950956606291968 |
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| author | Ildrem Syafri A. Sudradjat Nana Sulaksana G. Hartono |
| author_facet | Ildrem Syafri A. Sudradjat Nana Sulaksana G. Hartono |
| author_sort | Ildrem Syafri |
| collection | DOAJ |
| description | <p>DOI: <span><a href="http://dx.doi.org/10.17014/ijog.v5i4.109" target="_blank">10.17014/ijog.v5i4.109</a></span></p><p>Gajahmungkur is a Tertiary paleovolcano located in Wonogiri Regency, Central Java. The volcanic product of this volcano are widely distributed and composed of important elements of the stratigraphic sequence in the Southern Mountain area. The volcanic products so far have been simply classified as “Old Andesite Formation” which apparently is not in line with the stratigraphic code and the Indonesian Stratigraphic Code. The description of paleovolcano therefore might contribute to the revision of the “Old Andesite Formation”. The evolution of Gajahmungkur paleovolcano commenced with the formation of a submarine volcano, and then at the second phase a composite volcano emerged above sea level forming a volcano island. The third phase was the self destruction resulting in a formation of a caldera. Pumiceous components dominated the products. At the fourth phase, the activities began to decline producing more basaltic rocks. The statistical analysis of the interrelation between various physical properties of the clastic rocks leads to the identification of volcanic facies and the location of the paleovolcano vent.<br /><br /></p> |
| first_indexed | 2024-12-20T09:26:50Z |
| format | Article |
| id | doaj.art-54af396d854740d1ab85833ca1c5cf7c |
| institution | Directory Open Access Journal |
| issn | 2355-9314 2355-9306 |
| language | English |
| last_indexed | 2024-12-20T09:26:50Z |
| publishDate | 2014-06-01 |
| publisher | Geological Agency |
| record_format | Article |
| series | Indonesian Journal on Geoscience |
| spelling | doaj.art-54af396d854740d1ab85833ca1c5cf7c2022-12-21T19:45:10ZengGeological AgencyIndonesian Journal on Geoscience2355-93142355-93062014-06-015426326810.17014/ijog.5.4.263-268109The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation”Ildrem Syafri0A. Sudradjat1Nana Sulaksana2G. Hartono3Faculty of Technical Geology, Padjadjaran University, Jatinangor 45363Faculty of Technical Geology, Padjadjaran University, Jatinangor 45363Faculty of Technical Geology, Padjadjaran University, Jatinangor 45363Geology Department, University College of National Technology Yogyakarta<p>DOI: <span><a href="http://dx.doi.org/10.17014/ijog.v5i4.109" target="_blank">10.17014/ijog.v5i4.109</a></span></p><p>Gajahmungkur is a Tertiary paleovolcano located in Wonogiri Regency, Central Java. The volcanic product of this volcano are widely distributed and composed of important elements of the stratigraphic sequence in the Southern Mountain area. The volcanic products so far have been simply classified as “Old Andesite Formation” which apparently is not in line with the stratigraphic code and the Indonesian Stratigraphic Code. The description of paleovolcano therefore might contribute to the revision of the “Old Andesite Formation”. The evolution of Gajahmungkur paleovolcano commenced with the formation of a submarine volcano, and then at the second phase a composite volcano emerged above sea level forming a volcano island. The third phase was the self destruction resulting in a formation of a caldera. Pumiceous components dominated the products. At the fourth phase, the activities began to decline producing more basaltic rocks. The statistical analysis of the interrelation between various physical properties of the clastic rocks leads to the identification of volcanic facies and the location of the paleovolcano vent.<br /><br /></p>https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/109Gajahmungkur paleovolcanostatistical interrelationvolcanic faciesOld Andesite |
| spellingShingle | Ildrem Syafri A. Sudradjat Nana Sulaksana G. Hartono The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” Indonesian Journal on Geoscience Gajahmungkur paleovolcano statistical interrelation volcanic facies Old Andesite |
| title | The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” |
| title_full | The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” |
| title_fullStr | The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” |
| title_full_unstemmed | The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” |
| title_short | The Evolution of Gajahmungkur Paleovolcano, Wonogiri, Central Java, as A Reference to Revize the Terminology of “Old Andesite Formation” |
| title_sort | evolution of gajahmungkur paleovolcano wonogiri central java as a reference to revize the terminology of old andesite formation |
| topic | Gajahmungkur paleovolcano statistical interrelation volcanic facies Old Andesite |
| url | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/109 |
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