Located in Natar, South Lampung, there is paleozoic carbonate included in the Gunungkasih Formati... more Located in Natar, South Lampung, there is paleozoic carbonate included in the Gunungkasih Formation members. It is supposed to explain the geological history's uniqueness to the paleoenvironment during the Paleozoic age in western Indonesia. We concern with identifying the lithofacies by chemostratigraphy. We used several representative core data in this area. We determined the correlation of chemostratigraphy by CaO, MgO, SiO2, Fe2O3, and Mn concentration. It is to interpret the paleozoic paleoenvironment. The chemical range in stratigraphy is CaO 47.4-55.3 %; MgO 0.51-8.12 %; SiO2 0.21-1.20 %; up to 0.12% of Fe2O3; and up to 162 ppm of Mn. We concluded that the paleoenvironment of this unit was dominated by massive paleozoic coral reef facies that formed in the margin of warm-shallow marine.
IOP Conference Series: Earth and Environmental Science, 2023
Bandar Lampung City has a lowland topography, which is quite diverse in valleys to ridge hills. T... more Bandar Lampung City has a lowland topography, which is quite diverse in valleys to ridge hills. The city’s development made the face of the city of Bandar Lampung turn into a dense residential area between the hills. Landslide is one of the disasters that often occur in Indonesia. About 15 sub-districts that are prone to landslides in Bandar Lampung, including West Telukbetung, East Telukbetung, South Telukbetung, Bumiwaras, Panjang, Kedamaian, North Telukbetung, Tanjung Karang Pusat, Enggal, Tanjung Karang Barat, Kemiling, Langkapura, Kedaton, Rajabasa and Sukabumi (BPBD, 2018). Research about landslide-prone areas with a geospatial approach aimed at disaster mitigation efforts. The study results will be necessary information about disaster mitigation to minimize loss of life and material. The geospatial approach integrates landslide threat maps with road networks and public facilities. Also, the landslide threat area’s accessibility and affordability functions can be arranged to s...
IOP Conference Series: Earth and Environmental Science
Reports on the presences of petrified wood fossils in Padangcermin, Lampung, are rare, no strong ... more Reports on the presences of petrified wood fossils in Padangcermin, Lampung, are rare, no strong examination that expose the scientific concern on its paleoenvironment perspective. By the published geological map, these fossils was found in the area that labelled as Cretaceous sedimentary rock (145-66 mya). Recently, the known oldest petrified wood fossil in Indonesia, is from Miocene epoch (23.03-5.33 mya). It is an interesting circumstance to examine. By this study, we are trying to confirm this circumstances by conducting the geological mapping, collecting, and identifying the petrified wood fossils that could be found as in situ fossils in the area. This study reveals a new update in paleoenvironmental perspective. The petrified woods in this area are commonly preserved in cherty layer. There are also several fossilized aquatic freshwater plant remains that presences in this area. We suggest the fossilization of the petrified wood fossil in this area is related to high alkaline-...
IOP Conference Series: Earth and Environmental Science, 2021
Hulusimpang Formation.has known as Oligocene-Miocene rocks that consisted of volcanoclastic rock.... more Hulusimpang Formation.has known as Oligocene-Miocene rocks that consisted of volcanoclastic rock. Its scope was wide, especially in southern Sumatra. This formation is supposed as a prospect host of various hydrothermal mineralization. A preliminary study was carried out to examine the abundance of elements located in Way Kalianda River, Pesawaran, Lampung. This study was conducted by easuring its stratigraphy and analyzing its composition using an X-Ray fluorescence analyzer. The lithologies generally consist of lapilli tuffs, volcanic breccias, interbeded by claystone and sandstone; in addition, it is also frequently found petrified wood and andesitic-lithic fragments. As a result, the significant abundant elements are Fe (35.5%), Si (27.9%), Al (17.4%), K (6.7%), Cl (5.5%), Ti (1.7%), and Ca (1.5%) and also Mn, Ag, P, Mg, Sr, Zr, and Co. It also presents trace elements such as Rb, Zn, Pb, Te, V, Ba, Cr, Sn, Ni, Ga, Nb, Mo, and Eu. These elements are suggested from distal facies o...
IOP Conference Series: Earth and Environmental Science, 2021
Batusatam considers as Billitonite, a rare Australian strewnfield tektite. Regrettably, the scien... more Batusatam considers as Billitonite, a rare Australian strewnfield tektite. Regrettably, the scientific information of this object slightly, especially about the origin, the process of formation, and its uniqueness in the earth’s geological history. This paper reviewed the physical and chemical properties of unearthing Batusatam in Southeastern Belitung Island, Indonesia. Physical properties are examing based on object shape, surface texture pattern, dimensions, volume, mass, density, and hardness. We also analyzed major and minor elements using portable X-ray fluorescence (XRF) and compared them with another Australian tektite. Rod and tear-drop-shape, the unique shapes of Batusatam, were discovered. It had a higher FexOy, CaO, MnO proportion. Also, Sn (tin) is present significantly compared to other tektites. This significant uniqueness of Billitonite could clarify its origin, formation process, and role as a geoheritage.
IOP Conference Series: Earth and Environmental Science, 2021
In early 2021, a rare extraterrestrial object passed at high speed, followed by a powerful boom, ... more In early 2021, a rare extraterrestrial object passed at high speed, followed by a powerful boom, with a bright flare crossing the atmosphere and falling in Astomulyo Village, Punggur, Central Lampung, Indonesia. This object has been scientifically determining as a meteorite. Toward the spot where we first found it, we presented this object named Astomulyo meteorite. This research investigated its chemical properties using an X-ray fluorescence (XRF) analyzer. As the result, the major composition of this meteorite is Si (28.3-27.1%), Fe (22.1-19.8%), Mg (17.3-15.2%), Al (2.9-2.4%), Ca (1.7-1.9%), and S (1.0-0.97%). Its minor elements are Mn, Ni, Cr, P, and some trace elements such as Co, Ti, Sb, Sn, V, Cd, Zn. This meteorite suggested classifying as the H-Chondrites group. Fe, Ni, Al, and Ti enrichment occur on the meteorite’s surface. It is probably related to this meteorite origin and continuously processes until it falls to the Earth’s surface.
Journal of Science and Applicative Technology, 2021
The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best pot... more The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best potential areas to be developed as part of a world heritage, particularly as UNESCO Global Geopark. Both of these objects are in the Lampung Province, Indonesia. Soon, it is necessary to identify and make an inventory of key sites that could become the theme of the area. The study of geodiversity and scientific valuation was carried out which referred to the Technical Guidelines for the Assessment of Indonesia Geological Heritage Resources, 2019. Based on these studies and assessments, there are 14 key sites to represent for Geopark Krakatau-Way Kambas themes. These sites are closely related to the evolution of tectonic activity in the Southern Sumatera as well as the dynamics of magmatism and paleovolcanism that have occurred since the Mesozoic which has signification in human history as world heritage.
Kota Bandar Lampung memiliki topografi yang cukup beragam berupa lembah maupun punggungan bukit, ... more Kota Bandar Lampung memiliki topografi yang cukup beragam berupa lembah maupun punggungan bukit, dalam perkembangannya banyak kawasan pemukiman yang tersebar diantara perbukitan. Bencana longsor merupakan salah satu bencana yang sering terjadi di Indonesia. Perlu adanya kajian daerah rawan longsor beserta mitigasi bencana secara spesifik yang menjadi langkah konkrit dalam mengurangi angka korban jiwa maupun materi. Banyak faktor yang mempengaruhi rawan bencana longsor, yaitu: tingkat kemiringan dari kelerengan, tutupan lahan, jenis batuan dan tanah, serta didukung dengan data kejadian sebelumnya. Gambaran permukaan bumi khususnya daerah rawan longsor dapat direpresentasikan dalam peta, diawali dengan disusunnya dataset fundamental berdasarkan parameter yang berpengaruh kejadian longsor. Setiap parameter yang mempengaruhi kejadian longsor yang digunakan memiliki besar bobot yang berbeda dan terangkum dalam metode tumpang susun (Overlay). Meninjau area rawan di Kota Bandar Lampung ter...
The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best pot... more The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best potential areas to be developed as part of a world heritage, particularly as UNESCO Global Geopark. Both of these objects are in the Lampung Province, Indonesia. Soon, it is necessary to identify and make an inventory of key sites that could become the theme of the area. The study of geodiversity and scientific valuation was carried out which referred to the Technical Guidelines for the Assessment of Indonesia Geological Heritage Resources, 2019. Based on these studies and assessments, there are 14 key sites to represent for Geopark Krakatau-Way Kambas themes. These sites are closely related to the evolution of tectonic activity in the Southern Sumatera as well as the dynamics of magmatism and paleovolcanism that have occurred since the Mesozoic which has signification in human history as world heritage.
Samosir is the islands that emerge and standing upon on Toba Caldera after it’s the last eruption... more Samosir is the islands that emerge and standing upon on Toba Caldera after it’s the last eruption at 74.000 years ago. Samosir Island known as the caldera floor that uplifts parallel with Toba’s caldera flooding. In this study, we have observed an outcrop in Tumutuk, Samosir Island that hypothesized as a lacustrine deposit, and we found a paleosoil layer that might give more answers about the geological process in this area at the past time. Based on this outcrop, we described it, followed to measure its stratigraphy section, and took representative samples from the paleosoil layer, then observed the samples under the stereo-microscope as polish rock section, in normal light & negative images. As the result we identify several features of paleosoil & its sedimentary grain that shown this paleosoil layer, two events of the volcanoclastic deposits flown, and exposed two-time, and forming soil, it may form in the shallow swamp in a lacustrine environment, coincide with caldera flooding...
The research area is located in Linggapura Village, Selagailingga District, Central Lampung Regen... more The research area is located in Linggapura Village, Selagailingga District, Central Lampung Regency, Lampung Province which is included in the South Sumatra Basin at the southern. Based on regional geology, Linggapura is in the palembang lane so that it is rich in sedimentary rocks including limestone. The limestone found in the Linggapura area is equivalent to the Baturaja Formation which is exposed on Way Penandingan route, Linggapura Village. Based on its macroscopic and microscopic characteristics, this rock is divided into 3 facies, namely: (1) Bioclastic Wackestone Facies, (2) Bioclastic Packstone Facies, and (3) Bioclastic Grainstone Facies. The limestone deposition environment is estimated to be deposited in a restrict shelf environment to open shelf.
Located in Natar, South Lampung, there is paleozoic carbonate included in the Gunungkasih Formati... more Located in Natar, South Lampung, there is paleozoic carbonate included in the Gunungkasih Formation members. It is supposed to explain the geological history's uniqueness to the paleoenvironment during the Paleozoic age in western Indonesia. We concern with identifying the lithofacies by chemostratigraphy. We used several representative core data in this area. We determined the correlation of chemostratigraphy by CaO, MgO, SiO2, Fe2O3, and Mn concentration. It is to interpret the paleozoic paleoenvironment. The chemical range in stratigraphy is CaO 47.4-55.3 %; MgO 0.51-8.12 %; SiO2 0.21-1.20 %; up to 0.12% of Fe2O3; and up to 162 ppm of Mn. We concluded that the paleoenvironment of this unit was dominated by massive paleozoic coral reef facies that formed in the margin of warm-shallow marine.
IOP Conference Series: Earth and Environmental Science, 2023
Bandar Lampung City has a lowland topography, which is quite diverse in valleys to ridge hills. T... more Bandar Lampung City has a lowland topography, which is quite diverse in valleys to ridge hills. The city’s development made the face of the city of Bandar Lampung turn into a dense residential area between the hills. Landslide is one of the disasters that often occur in Indonesia. About 15 sub-districts that are prone to landslides in Bandar Lampung, including West Telukbetung, East Telukbetung, South Telukbetung, Bumiwaras, Panjang, Kedamaian, North Telukbetung, Tanjung Karang Pusat, Enggal, Tanjung Karang Barat, Kemiling, Langkapura, Kedaton, Rajabasa and Sukabumi (BPBD, 2018). Research about landslide-prone areas with a geospatial approach aimed at disaster mitigation efforts. The study results will be necessary information about disaster mitigation to minimize loss of life and material. The geospatial approach integrates landslide threat maps with road networks and public facilities. Also, the landslide threat area’s accessibility and affordability functions can be arranged to s...
IOP Conference Series: Earth and Environmental Science
Reports on the presences of petrified wood fossils in Padangcermin, Lampung, are rare, no strong ... more Reports on the presences of petrified wood fossils in Padangcermin, Lampung, are rare, no strong examination that expose the scientific concern on its paleoenvironment perspective. By the published geological map, these fossils was found in the area that labelled as Cretaceous sedimentary rock (145-66 mya). Recently, the known oldest petrified wood fossil in Indonesia, is from Miocene epoch (23.03-5.33 mya). It is an interesting circumstance to examine. By this study, we are trying to confirm this circumstances by conducting the geological mapping, collecting, and identifying the petrified wood fossils that could be found as in situ fossils in the area. This study reveals a new update in paleoenvironmental perspective. The petrified woods in this area are commonly preserved in cherty layer. There are also several fossilized aquatic freshwater plant remains that presences in this area. We suggest the fossilization of the petrified wood fossil in this area is related to high alkaline-...
IOP Conference Series: Earth and Environmental Science, 2021
Hulusimpang Formation.has known as Oligocene-Miocene rocks that consisted of volcanoclastic rock.... more Hulusimpang Formation.has known as Oligocene-Miocene rocks that consisted of volcanoclastic rock. Its scope was wide, especially in southern Sumatra. This formation is supposed as a prospect host of various hydrothermal mineralization. A preliminary study was carried out to examine the abundance of elements located in Way Kalianda River, Pesawaran, Lampung. This study was conducted by easuring its stratigraphy and analyzing its composition using an X-Ray fluorescence analyzer. The lithologies generally consist of lapilli tuffs, volcanic breccias, interbeded by claystone and sandstone; in addition, it is also frequently found petrified wood and andesitic-lithic fragments. As a result, the significant abundant elements are Fe (35.5%), Si (27.9%), Al (17.4%), K (6.7%), Cl (5.5%), Ti (1.7%), and Ca (1.5%) and also Mn, Ag, P, Mg, Sr, Zr, and Co. It also presents trace elements such as Rb, Zn, Pb, Te, V, Ba, Cr, Sn, Ni, Ga, Nb, Mo, and Eu. These elements are suggested from distal facies o...
IOP Conference Series: Earth and Environmental Science, 2021
Batusatam considers as Billitonite, a rare Australian strewnfield tektite. Regrettably, the scien... more Batusatam considers as Billitonite, a rare Australian strewnfield tektite. Regrettably, the scientific information of this object slightly, especially about the origin, the process of formation, and its uniqueness in the earth’s geological history. This paper reviewed the physical and chemical properties of unearthing Batusatam in Southeastern Belitung Island, Indonesia. Physical properties are examing based on object shape, surface texture pattern, dimensions, volume, mass, density, and hardness. We also analyzed major and minor elements using portable X-ray fluorescence (XRF) and compared them with another Australian tektite. Rod and tear-drop-shape, the unique shapes of Batusatam, were discovered. It had a higher FexOy, CaO, MnO proportion. Also, Sn (tin) is present significantly compared to other tektites. This significant uniqueness of Billitonite could clarify its origin, formation process, and role as a geoheritage.
IOP Conference Series: Earth and Environmental Science, 2021
In early 2021, a rare extraterrestrial object passed at high speed, followed by a powerful boom, ... more In early 2021, a rare extraterrestrial object passed at high speed, followed by a powerful boom, with a bright flare crossing the atmosphere and falling in Astomulyo Village, Punggur, Central Lampung, Indonesia. This object has been scientifically determining as a meteorite. Toward the spot where we first found it, we presented this object named Astomulyo meteorite. This research investigated its chemical properties using an X-ray fluorescence (XRF) analyzer. As the result, the major composition of this meteorite is Si (28.3-27.1%), Fe (22.1-19.8%), Mg (17.3-15.2%), Al (2.9-2.4%), Ca (1.7-1.9%), and S (1.0-0.97%). Its minor elements are Mn, Ni, Cr, P, and some trace elements such as Co, Ti, Sb, Sn, V, Cd, Zn. This meteorite suggested classifying as the H-Chondrites group. Fe, Ni, Al, and Ti enrichment occur on the meteorite’s surface. It is probably related to this meteorite origin and continuously processes until it falls to the Earth’s surface.
Journal of Science and Applicative Technology, 2021
The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best pot... more The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best potential areas to be developed as part of a world heritage, particularly as UNESCO Global Geopark. Both of these objects are in the Lampung Province, Indonesia. Soon, it is necessary to identify and make an inventory of key sites that could become the theme of the area. The study of geodiversity and scientific valuation was carried out which referred to the Technical Guidelines for the Assessment of Indonesia Geological Heritage Resources, 2019. Based on these studies and assessments, there are 14 key sites to represent for Geopark Krakatau-Way Kambas themes. These sites are closely related to the evolution of tectonic activity in the Southern Sumatera as well as the dynamics of magmatism and paleovolcanism that have occurred since the Mesozoic which has signification in human history as world heritage.
Kota Bandar Lampung memiliki topografi yang cukup beragam berupa lembah maupun punggungan bukit, ... more Kota Bandar Lampung memiliki topografi yang cukup beragam berupa lembah maupun punggungan bukit, dalam perkembangannya banyak kawasan pemukiman yang tersebar diantara perbukitan. Bencana longsor merupakan salah satu bencana yang sering terjadi di Indonesia. Perlu adanya kajian daerah rawan longsor beserta mitigasi bencana secara spesifik yang menjadi langkah konkrit dalam mengurangi angka korban jiwa maupun materi. Banyak faktor yang mempengaruhi rawan bencana longsor, yaitu: tingkat kemiringan dari kelerengan, tutupan lahan, jenis batuan dan tanah, serta didukung dengan data kejadian sebelumnya. Gambaran permukaan bumi khususnya daerah rawan longsor dapat direpresentasikan dalam peta, diawali dengan disusunnya dataset fundamental berdasarkan parameter yang berpengaruh kejadian longsor. Setiap parameter yang mempengaruhi kejadian longsor yang digunakan memiliki besar bobot yang berbeda dan terangkum dalam metode tumpang susun (Overlay). Meninjau area rawan di Kota Bandar Lampung ter...
The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best pot... more The global significance of Krakatau Volcanic Complex and Way Kambas National Park is the best potential areas to be developed as part of a world heritage, particularly as UNESCO Global Geopark. Both of these objects are in the Lampung Province, Indonesia. Soon, it is necessary to identify and make an inventory of key sites that could become the theme of the area. The study of geodiversity and scientific valuation was carried out which referred to the Technical Guidelines for the Assessment of Indonesia Geological Heritage Resources, 2019. Based on these studies and assessments, there are 14 key sites to represent for Geopark Krakatau-Way Kambas themes. These sites are closely related to the evolution of tectonic activity in the Southern Sumatera as well as the dynamics of magmatism and paleovolcanism that have occurred since the Mesozoic which has signification in human history as world heritage.
Samosir is the islands that emerge and standing upon on Toba Caldera after it’s the last eruption... more Samosir is the islands that emerge and standing upon on Toba Caldera after it’s the last eruption at 74.000 years ago. Samosir Island known as the caldera floor that uplifts parallel with Toba’s caldera flooding. In this study, we have observed an outcrop in Tumutuk, Samosir Island that hypothesized as a lacustrine deposit, and we found a paleosoil layer that might give more answers about the geological process in this area at the past time. Based on this outcrop, we described it, followed to measure its stratigraphy section, and took representative samples from the paleosoil layer, then observed the samples under the stereo-microscope as polish rock section, in normal light & negative images. As the result we identify several features of paleosoil & its sedimentary grain that shown this paleosoil layer, two events of the volcanoclastic deposits flown, and exposed two-time, and forming soil, it may form in the shallow swamp in a lacustrine environment, coincide with caldera flooding...
The research area is located in Linggapura Village, Selagailingga District, Central Lampung Regen... more The research area is located in Linggapura Village, Selagailingga District, Central Lampung Regency, Lampung Province which is included in the South Sumatra Basin at the southern. Based on regional geology, Linggapura is in the palembang lane so that it is rich in sedimentary rocks including limestone. The limestone found in the Linggapura area is equivalent to the Baturaja Formation which is exposed on Way Penandingan route, Linggapura Village. Based on its macroscopic and microscopic characteristics, this rock is divided into 3 facies, namely: (1) Bioclastic Wackestone Facies, (2) Bioclastic Packstone Facies, and (3) Bioclastic Grainstone Facies. The limestone deposition environment is estimated to be deposited in a restrict shelf environment to open shelf.
Bunga Rampai 2023: Pemanfaatan Teknologi Penginderaan Jauh untuk Pembangunan Indonesia Berkelanjutan, Jun 13, 2024
Dengan kondisi geografis sebagai bentang alam karst tropis, Pulau Nusa Penida memiliki karakteris... more Dengan kondisi geografis sebagai bentang alam karst tropis, Pulau Nusa Penida memiliki karakteristik yang unik untuk dikaji. Keterkaitan antara aspek vegetasi hingga kondisi tanah, erat kaitannya dengan ketersediaan air permukaan, khususnya pada bentang alam karst tropis seperti di Nusa Penida. Hal ini perlu segera dipahami mengingat tantangan untuk menghadapi perubahan iklim yang saat ini sedang terjadi. Dalam studi ini dilakukan analisis interelasi pada ragam normalized difference index, meliputi Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), Normalized Difference Moisture Index (NDMI), Bare Soil Index (BSI), dan Soil-Adjusted Vegetation Index (SAVI). Data diperoleh dari citra satelit Harmonized Sentinel-2 MSI dengan tutupan awan < 5% saat musim kemarau Agustus 2020 dan musim penghujan Mei 2022. Kajian data tersebut ditunjang dengan analisis statistik meliputi uji regresi, matriks korelasi, dan Principal Component Analysis (PCA) menggunakan RStudio. Studi lapangan turut dilakukan untuk mengkonfirmasi bentang alam karst yang signifikan merepresentasikan nilai indeks yang dianalisis. Hasil studi kami menunjukan bahwa pada lingkungan karst di Nusa Penida, terdapat relasi yang lebih kuat dan berbanding terbalik antara nilai NDMI dan NDVI ataupun SAVI, diikuti dengan pola yang sama antara nilai BSI dan NDWI. Hasil studi ini mengkonfirmasi bahwa nilai-nilai indeks yang dikaji merespon kondisi monsoonal di Nusa Penida, baik saat musim kemarau dan penghujan. Curah hujan monsoonal memiliki peran yang signifikan pada ketersediaan air tanah pada lapisan epikarst, sehingga secara langsung berdampak pada perubahan tutupan vegetasi, kelembaban permukaaan tanah, dan distribusi tanah tandus di Nusa Penida. Secara lebih jauh, nilai ilmiah dalam studi ini telah memberikan perspektif terkini untuk memahami lingkungan karst tropis di Indonesia. Pengembangan studi ini dapat mengarah pada landasan studi untuk memonitoring dan menyusun perencanaan mitigasi resiko kekeringan jangka panjang akibat perubahan iklim yang saat ini sedang terjadi.
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