Gunung api maar di Semenanjung Muria
<p><a href="http://dx.doi.org/10.17014/ijog.vol2no1.20074">http://dx.doi.org/10.17014/ijog.vol2no1.20074</a></p><p><em>Th</em><em>r</em><em>e</em><em>e maars are well identifi ed in the Muria Peninsula, i.e. Bambang Ma...
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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/27 |
| _version_ | 1818416841463169024 |
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| author | Sutikno Bronto Sri Mulyaningsih |
| author_facet | Sutikno Bronto Sri Mulyaningsih |
| author_sort | Sutikno Bronto |
| collection | DOAJ |
| description | <p><a href="http://dx.doi.org/10.17014/ijog.vol2no1.20074">http://dx.doi.org/10.17014/ijog.vol2no1.20074</a></p><p><em>Th</em><em>r</em><em>e</em><em>e maars are well identifi ed in the Muria Peninsula, i.e. Bambang Maar, Gunungrowo Maar, and Gembong Maar. The maars were formed by monogenetic volcanic eruptions due to the interaction between heat source (magma), groundwater and calcareous basement rocks. This interaction is able to produce very high pressure of gas and steam causing phreatic explosions, followed by phreatomagmatic- or even magmatic explosions and ended by a lava extrusion. Satellite image analyses have recognized twelve circular features, comprising Bambang Maar, Gunungrowo Maar, and Gembaong Maar. Phisiographically, these maars are characterized by circular depressions which are surrounded by hills that are gently sloping down away from the crater or having a radier pattern morphology. Outcrops and drilling core in the circular areas that are considered as volcanic maars are lava fl ows, pyroclastic breccias, lapillistones, and tuffs, located far away from the eruption centres of Muria and Genuk Volcanoes. One of the circular features, i.e. Jepara Circular Feature, is also supported by negative anomaly (<30 mgal) showing a circular pattern. In the future, a maar volcano could possibly erupt depending on the tectonic reactivity in the region.</em></p> <p> </p> |
| first_indexed | 2024-12-14T11:57:18Z |
| format | Article |
| id | doaj.art-5a4ad4e9dee54fe8916d52d0a9ccd0de |
| institution | Directory Open Access Journal |
| issn | 2355-9314 2355-9306 |
| language | English |
| last_indexed | 2024-12-14T11:57:18Z |
| publishDate | 2014-06-01 |
| publisher | Geological Agency |
| record_format | Article |
| series | Indonesian Journal on Geoscience |
| spelling | doaj.art-5a4ad4e9dee54fe8916d52d0a9ccd0de2022-12-21T23:02:04ZengGeological AgencyIndonesian Journal on Geoscience2355-93142355-93062014-06-0121435410.17014/ijog.2.1.43-5427Gunung api maar di Semenanjung MuriaSutikno Bronto0Sri Mulyaningsih1Pusat Survei Geologi, Jln. Diponegoro No. 57 BandungTeknik Geologi IST AKPRIND, Jln. Kalisahak No. 28 Yogyakarta<p><a href="http://dx.doi.org/10.17014/ijog.vol2no1.20074">http://dx.doi.org/10.17014/ijog.vol2no1.20074</a></p><p><em>Th</em><em>r</em><em>e</em><em>e maars are well identifi ed in the Muria Peninsula, i.e. Bambang Maar, Gunungrowo Maar, and Gembong Maar. The maars were formed by monogenetic volcanic eruptions due to the interaction between heat source (magma), groundwater and calcareous basement rocks. This interaction is able to produce very high pressure of gas and steam causing phreatic explosions, followed by phreatomagmatic- or even magmatic explosions and ended by a lava extrusion. Satellite image analyses have recognized twelve circular features, comprising Bambang Maar, Gunungrowo Maar, and Gembaong Maar. Phisiographically, these maars are characterized by circular depressions which are surrounded by hills that are gently sloping down away from the crater or having a radier pattern morphology. Outcrops and drilling core in the circular areas that are considered as volcanic maars are lava fl ows, pyroclastic breccias, lapillistones, and tuffs, located far away from the eruption centres of Muria and Genuk Volcanoes. One of the circular features, i.e. Jepara Circular Feature, is also supported by negative anomaly (<30 mgal) showing a circular pattern. In the future, a maar volcano could possibly erupt depending on the tectonic reactivity in the region.</em></p> <p> </p>https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/27maar volcanoMuria Peninsulacircullar featurephreatic explosionphreatomagmatic explosion |
| spellingShingle | Sutikno Bronto Sri Mulyaningsih Gunung api maar di Semenanjung Muria Indonesian Journal on Geoscience maar volcano Muria Peninsula circullar feature phreatic explosion phreatomagmatic explosion |
| title | Gunung api maar di Semenanjung Muria |
| title_full | Gunung api maar di Semenanjung Muria |
| title_fullStr | Gunung api maar di Semenanjung Muria |
| title_full_unstemmed | Gunung api maar di Semenanjung Muria |
| title_short | Gunung api maar di Semenanjung Muria |
| title_sort | gunung api maar di semenanjung muria |
| topic | maar volcano Muria Peninsula circullar feature phreatic explosion phreatomagmatic explosion |
| url | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/27 |
| work_keys_str_mv | AT sutiknobronto gunungapimaardisemenanjungmuria AT srimulyaningsih gunungapimaardisemenanjungmuria |