Hubungan Stratigrafi antara Satuan Batuan Vulkanik dengan Satuan Batuan Karbonat di Daerah Bangunjiwo dan Sekitarnya, Kecamatan Kasihan, Kabupaten Bantul, Provinsi Daerah Istimewa Yogyakarta
The background for this research is existence of volcanic rocks that is andesite breccia in research site which was mapped as carbonate rocks from Sentolo Formation and quarternary volcanic sediment of Merapi volcano that was published in geological map of Yogyakarta (1997). The objective of this re...
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| Main Authors: | , |
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| 格式: | Theses and Dissertations NonPeerReviewed |
| 出版: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| 在線閱讀: | https://repository.ugm.ac.id/132186/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72706 |
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| 總結: | The background for this research is existence of volcanic rocks that is
andesite breccia in research site which was mapped as carbonate rocks from
Sentolo Formation and quarternary volcanic sediment of Merapi volcano that
was published in geological map of Yogyakarta (1997). The objective of this
research was to determine stratigraphic relationship of vulcanic rocks unit and
carbonate rocks unit. Administratively area for this research is located in
Bangunjiwo Village, Kasihan, Bantul, Daerah Istimewa Yogyakarta, Indonesia.
Geographically, this site is located in the UTM zone 49S coordinate positions of
9131655-9136595 N and 422057-427484 E.
The research consist of two main stages they are: stage of problems
identifying are recognaisance, study from secondary literatures, and hypothesis
determining, also stage of problems solving are collecting, processing, and
analyzing of data, then concluding. Methods used for this stage are geological
mapping, rocks sampling for paleontology and petrography analysis, also
laboratory observations for data collecting. Then methods of data analyzing by
qualitatively to determine characteristics of litology, origins, lateral-vertical
propagation and stratigraphic relationship for all of rocks units.
Based on analysis result can be determined that the research area divided
into six rocks units called: packestone-wackestone, packestone-grainstone,
packestone-rudstone, andesite conglomerate-cristal tuff, andesite conglomerateandesite
breccia, and pebblely sand. Carbonate rocks in this area are
fossiliferous wackestone fossiliferous packestone, fossiliferous grainstone,
fossiliferous rudstone, and marl. Volcanic rocks in this area are orthopyroxene
andesite conglomerate, lithic tuff, crystal tuff, clynopyroxene andesite
conglomerate, hornblende andesite breccia,and pebblely sand deposit. Carbonate
rocks origins are at Middle Miocene-Late Pliocene (N10-N21) in lower bathyalouter
neritic continuously. Volcanic rocks origins are at Pleistocene-Holocene in
terrestrial-fluvial environment by mechanism of pyroclatic flow, traction flow,
and mass flow uncontinuously. Stratigraphic relationship between volcanic rocks
unit and carbonate rocks unit is unconformity, that is angular unconformity at
certain place and erotional unconfomity plane as their contact. |
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