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All Journal IPTEK Journal of Proceedings Series IJOG : Indonesian Journal on Geoscience Jurnal Geosaintek Journal of Geoscience, Engineering, Environment, and Technology Indonesian Journal on Geoscience Indonesian Journal on Geoscience
Ariyanti, Nita
Institut Teknologi Sepuluh Nopember
Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Physics

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Tholeiitic Basalt in Banyumas Basin (Kebasen, Central Java): The Evidence of Sedimentary Recycling Input and the Contribution of Oceanic Slab on Fore-arc Active Continental Margin (ACM) Magmatism fadlin, fadlin; Godang, Shaban; Ariyanti, Nita; Hamzah, Wildan Nur; Aditama, Maulana Rizki
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6942.936 KB) | DOI: 10.17014/ijog.8.2.233-253

Abstract

DOI:10.17014/ijog.8.2.233-253The study of tholeiitic basalt is a general-classic study from geotectonic MORB, ocean island (OIB), continental rift, volcanic-arcs {IAB or Active Continental Margin (ACM)}. However, the geotectonic study of the tholeiitic volcanic-arcs is still unclear at the moment. In general, the arc tholeiitic is directly pointed to an island-arc volcanic, and the result of google search engine defines no existence of tholeiitic geochemistry which is formed from continental-arc volcanic (ACM). The problem lies in the model of discrimination diagram which is not able to discriminate ACM from the island arc volcanic. The spider diagram shows relatively similar of patterns as well as in the use of the isotope 143Nd/144Nd versus 87Sr/86Sr. Tholeiitic Kebasen pillow lava exhibits a slightly hydrothermal alteration (propyilitic alteration) which consists of plagioclase (labradorite-bytownite), olivine, pyroxene (diopside), hornblende, volcanic glass and other secondary minerals (such as iddingsite, zeolite, carbonate, sericite and opaque minerals). The results of the interpretation using the overlay diagram of Mg# and FeO(t)/MgO, diagram Nb/La vs. La/Yb, the overlaid diagram between the diagram of Zr/Y vs. Zr, newly developed diagram for sedimentary recycling (Th/Ce vs. SiO2) reveal the Kebasen lava is a differentiated tholeiitic rock with relatively low of Mg# (Mg# < 55) which is generated from geotectonic forearc ACM (Active Continental Margin) and involves the sedimentary recycling (Th/Ce > 0.1); furthermore, the trace element constituent is interpreted based upon the melting of oceanic slab (Zr/Y ~ 3). The magmatism of Kebasen lava is potentially formed at temperature of ~ 1240 oC and a pressure of ~ 1.7 GPa at the depth of ~ 56 Km.
Tholeiitic Basalt in Banyumas Basin (Kebasen, Central Java): The Evidence of Sedimentary Recycling Input and the Contribution of Oceanic Slab on Fore-arc Active Continental Margin (ACM) Magmatism fadlin, fadlin; Godang, Shaban; Ariyanti, Nita; Hamzah, Wildan Nur; Aditama, Maulana Rizki
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.2.233-253

Abstract

DOI:10.17014/ijog.8.2.233-253The study of tholeiitic basalt is a general-classic study from geotectonic MORB, ocean island (OIB), continental rift, volcanic-arcs {IAB or Active Continental Margin (ACM)}. However, the geotectonic study of the tholeiitic volcanic-arcs is still unclear at the moment. In general, the arc tholeiitic is directly pointed to an island-arc volcanic, and the result of google search engine defines no existence of tholeiitic geochemistry which is formed from continental-arc volcanic (ACM). The problem lies in the model of discrimination diagram which is not able to discriminate ACM from the island arc volcanic. The spider diagram shows relatively similar of patterns as well as in the use of the isotope 143Nd/144Nd versus 87Sr/86Sr. Tholeiitic Kebasen pillow lava exhibits a slightly hydrothermal alteration (propyilitic alteration) which consists of plagioclase (labradorite-bytownite), olivine, pyroxene (diopside), hornblende, volcanic glass and other secondary minerals (such as iddingsite, zeolite, carbonate, sericite and opaque minerals). The results of the interpretation using the overlay diagram of Mg# and FeO(t)/MgO, diagram Nb/La vs. La/Yb, the overlaid diagram between the diagram of Zr/Y vs. Zr, newly developed diagram for sedimentary recycling (Th/Ce vs. SiO2) reveal the Kebasen lava is a differentiated tholeiitic rock with relatively low of Mg# (Mg# < 55) which is generated from geotectonic forearc ACM (Active Continental Margin) and involves the sedimentary recycling (Th/Ce > 0.1); furthermore, the trace element constituent is interpreted based upon the melting of oceanic slab (Zr/Y ~ 3). The magmatism of Kebasen lava is potentially formed at temperature of ~ 1240 oC and a pressure of ~ 1.7 GPa at the depth of ~ 56 Km.
Geosite Assessments at the Southern Part of Karangbolong Dome: New Insight to Geotourism Potential in Kebumen, Central Java, Indonesia Fadlin; Gentur Waluyo; Yohanes Iwan; Nita Ariyanti; Nanda Ajeng Nurwantari
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 1 (2020): JGEET Vol 05 No 01: March 2020
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4356.751 KB) | DOI: 10.25299/jgeet.2020.5.1.2874

Abstract

Karangbolong is a morphological dome in Kebumen area, that has a high geological diversity and have a lot of tourism potential, but has not been developed optimally as a geotourism potential based on conservative and educative aspects, especially the existence of ancient volcano of Menganti the quite interesting from a geological point of view, so in this case an inventory of a geological diversity is required. This study aims to understand the geological conditions and conduct an assessment of the feasibility of geodiversity in ancient volcano complex of Menganti. The methodology for this research is a direct observation in the field based on the surface geological mapping, rock sampling for petrology study of rocks for supporting the quantitative assessment of genocide in the research area. The research area has 2 (two) landscape models, ie,ex-volcanic landscape, in this case occupying 95% of the research area and then the karst landscape, occupying 5% of the research area. Stratigraphy of the research area can be divided into 5 units from old to young, that is basaltic lava of Menganti, the pyroclastic flow of Menganti which is interfingering with andesitic lava of Karangduwur, andesite-basalt intrusion unit, and limestone of Agropeni. Based on field investigation, the research area has 27 geosite objects that can be developed as geotourism potential, covering 3 geomorphological sites, 7 lithology sites, 9 cave karst sites, 5 beach sites, and 2 waterfall sites. Based on the results of quantitative assessment of geosites in the research area with accessibility, state of preservation, scientific wort, and educational significance parameters, the research area has a geodiversity index from 19 until 24, in this case, the research area has good until very good grade to be developed as a geotourism potential base on educative and conservative, in order to improve the economic value of local communities. Keywords: Qualitative assessment, geodiversity, geotourism, paleo-volcano, Kebumen.
Tholeiitic Basalt in Banyumas Basin (Kebasen, Central Java): The Evidence of Sedimentary Recycling Input and the Contribution of Oceanic Slab on Fore-arc Active Continental Margin (ACM) Magmatism fadlin fadlin; Shaban Godang; Nita Ariyanti; Wildan Nur Hamzah; Maulana Rizki Aditama
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.2.233-253

Abstract

DOI:10.17014/ijog.8.2.233-253The study of tholeiitic basalt is a general-classic study from geotectonic MORB, ocean island (OIB), continental rift, volcanic-arcs {IAB or Active Continental Margin (ACM)}. However, the geotectonic study of the tholeiitic volcanic-arcs is still unclear at the moment. In general, the arc tholeiitic is directly pointed to an island-arc volcanic, and the result of google search engine defines no existence of tholeiitic geochemistry which is formed from continental-arc volcanic (ACM). The problem lies in the model of discrimination diagram which is not able to discriminate ACM from the island arc volcanic. The spider diagram shows relatively similar of patterns as well as in the use of the isotope 143Nd/144Nd versus 87Sr/86Sr. Tholeiitic Kebasen pillow lava exhibits a slightly hydrothermal alteration (propyilitic alteration) which consists of plagioclase (labradorite-bytownite), olivine, pyroxene (diopside), hornblende, volcanic glass and other secondary minerals (such as iddingsite, zeolite, carbonate, sericite and opaque minerals). The results of the interpretation using the overlay diagram of Mg# and FeO(t)/MgO, diagram Nb/La vs. La/Yb, the overlaid diagram between the diagram of Zr/Y vs. Zr, newly developed diagram for sedimentary recycling (Th/Ce vs. SiO2) reveal the Kebasen lava is a differentiated tholeiitic rock with relatively low of Mg# (Mg# < 55) which is generated from geotectonic forearc ACM (Active Continental Margin) and involves the sedimentary recycling (Th/Ce > 0.1); furthermore, the trace element constituent is interpreted based upon the melting of oceanic slab (Zr/Y ~ 3). The magmatism of Kebasen lava is potentially formed at temperature of ~ 1240 oC and a pressure of ~ 1.7 GPa at the depth of ~ 56 Km.
Pemodelan Geostatistik 3D Pada Sebaran Batuan Karbonat Menggunakan Metode Kriging Berdasarkan Data Resistivitas 2D Dan N-SPT Fahrenzy Yona Aisha; Dwa Desa Warnana; Nita Ariyanti
Jurnal Geosaintek Vol 4, No 3 (2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1202.72 KB) | DOI: 10.12962/j25023659.v4i3.4522

Abstract

Metode Geofisika memainkan peran yang penting dalam bidang ilmu kebumian, terutama dalam menentukan struktur bumi. Dalam dunia eksplorasi, metode geofisika digunakan untuk mengestimasi sebaran sifat fisika material penyusun bumi tidak terkecuali metode geolistrik. Umumnya, metode geolistrik dilakukan untuk mengestimasi struktur bumi dalam 1D dan 2D. Seiring berjalannya waktu, kebutuhan terhadap data keadaan bawah permukaan yang lebih terkarakterisasi dengan detail dan menerus semakin meningkat. Sementara, harga yang tinggi saat melakukan akuisisi geolistrik 3D terkadang menjadi kendala dalam eksplorasi. Oleh sebab itu, diperlukan hasil penampang yang mendekati kondisi riil-nya yakni pemodelan dalam bentuk 3D berdasarkan data 2D. Untuk dapat memprediksi pola sebaran data di antara titik ukur atau antara penampang, diperlukan aplikasi metode geostatistik. Metode Geostatistik yang digunakan adalah kriging. Data kemudian dilakukan interpretasi secara kualitatif dengan mengintegrasikan dengan kondisi geologinya. Tujuan penelitian ini adalah untuk mengetahui pseudo 3D resis yang dapat menggambarkan bawah permukaan secara 3D dari data 2D. Kombinasi antara hasil dari survei geofisika dan geologi ini dapat menghasilkan persebaran distribusi karbonat di daerah penelitian yakni Kabupaten Tuban, Kec. Jenu. Kemudian, berdasarkan model persebaran karbonat mengindikasikan bahwa lingkungan penelitian ini memiliki jenis karbonat reefal dengan kombinasi batuan gamping dan dolomit
Studi Kelayakan Perangkap CO2 Berdasarkan Analisa Fisik Sedimen (Studi Kasus : Formasi Kabuh, Cekungan Jawa Timur Utara) Wien Lestari; Nita Ariyanti; Juan Pandu; Firmansyah Saifuddin; Widya Utama; Ayi Saeful Bahri; I Putu Khrisna Wijaya
IPTEK Journal of Proceedings Series No 2 (2018): The 2nd Conference on Innovation and Industrial Applications (CINIA 2016)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (715.844 KB) | DOI: 10.12962/j23546026.y2018i1.3386

Abstract

Peningkatan Pengembangan Produksi Minyak dan Gas di Jawa Timur menghasilkan CO₂ lebih dari 2 juta ton/tahun. CCS (Carbon Capture and Storage) adalah upaya mitigasi mengurangi pemanasan global dengan menangkap dan menyimpan CO₂ di dalam formasi batuan sedimen dengan porositas dan permeabilitas tinggi. Tujuan penelitian ini untuk mengevaluasi potensi penerapan CCS di cekungan Jawa Timur. Formasi Kabuh yang terletak di Zona Kendeng menjadi objek studi kelayakan sebagai perangkap CO₂. Formasi Kabuh berumur Pleistocene (N23) terdiri dari batu pasir dengan bahan non-vulkanik, mengandung kuarsa, crossbedding dengan konglomerat dan tuf, fosil vertebrata (N23) dan molusca. Sedimen ditandai dengan intensifikasi trough-jenis crossbedding, mengandung fragmen berukuran kerikil. Penelitian CCS ini menggunakan metode kuantitatif berupa analisa formasi meliputi ukuran butir, makroskopik and megaskopis petrologi, mineral dan analisa fosil, analisa struktur geologi serta menghitung kelurusan dan struktur yang dominan di daerah penelitian. Analisa Metoda Kuantitatif diharapkan menjadi penilaian Formasi Kabuh yang mungkin memenuhi persyaratan sebagai perangkap CO₂
Tholeiitic Basalt in Banyumas Basin (Kebasen, Central Java): The Evidence of Sedimentary Recycling Input and the Contribution of Oceanic Slab on Fore-arc Active Continental Margin (ACM) Magmatism fadlin fadlin; Shaban Godang; Nita Ariyanti; Wildan Nur Hamzah; Maulana Rizki Aditama
Indonesian Journal on Geoscience Vol. 8 No. 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.2.233-253

Abstract

DOI:10.17014/ijog.8.2.233-253The study of tholeiitic basalt is a general-classic study from geotectonic MORB, ocean island (OIB), continental rift, volcanic-arcs {IAB or Active Continental Margin (ACM)}. However, the geotectonic study of the tholeiitic volcanic-arcs is still unclear at the moment. In general, the arc tholeiitic is directly pointed to an island-arc volcanic, and the result of google search engine defines no existence of tholeiitic geochemistry which is formed from continental-arc volcanic (ACM). The problem lies in the model of discrimination diagram which is not able to discriminate ACM from the island arc volcanic. The spider diagram shows relatively similar of patterns as well as in the use of the isotope 143Nd/144Nd versus 87Sr/86Sr. Tholeiitic Kebasen pillow lava exhibits a slightly hydrothermal alteration (propyilitic alteration) which consists of plagioclase (labradorite-bytownite), olivine, pyroxene (diopside), hornblende, volcanic glass and other secondary minerals (such as iddingsite, zeolite, carbonate, sericite and opaque minerals). The results of the interpretation using the overlay diagram of Mg# and FeO(t)/MgO, diagram Nb/La vs. La/Yb, the overlaid diagram between the diagram of Zr/Y vs. Zr, newly developed diagram for sedimentary recycling (Th/Ce vs. SiO2) reveal the Kebasen lava is a differentiated tholeiitic rock with relatively low of Mg# (Mg# < 55) which is generated from geotectonic forearc ACM (Active Continental Margin) and involves the sedimentary recycling (Th/Ce > 0.1); furthermore, the trace element constituent is interpreted based upon the melting of oceanic slab (Zr/Y ~ 3). The magmatism of Kebasen lava is potentially formed at temperature of ~ 1240 oC and a pressure of ~ 1.7 GPa at the depth of ~ 56 Km.
Co-Authors Aditama, Maulana Rizki Ayi Saeful Bahri Dwa Desa Warnana Fadlin Fadlin Fahrenzy Yona Aisha Firmansyah Saifuddin Gentur Waluyo Godang, Shaban Hamzah, Wildan Nur I Putu Khrisna Wijaya Juan Pandu Nanda Ajeng Nurwantari Shaban Godang Widya Utama Wildan Nur Hamzah Yohanes Iwan