scholarly journals DISTRIBUTION OF SUBSURFACE QUATERNARY SEDIMENT IN SOUTH BINTAN ISLAND WATERS AS A POTENTIAL HEAVY MINERAL PLACER OR RARE EARTH ELEMENT DEPOSIT BASED ON SEISMIC INTERPRETATION

2021 ◽  
Vol 36 (1) ◽  
Author(s):  
Muhammad Zulfikar ◽  
Nazar Nurdin ◽  
Noor Cahyo Dwi Aryanto ◽  
Ildrem Syafri ◽  
Budi Muljana ◽  
...  
Keyword(s):  
Single Channel ◽  
Heavy Mineral ◽  
Seismic Facies ◽  
Mineral Deposits ◽  
Kriging Method ◽  
Shallow Sea ◽  
Quaternary Sediments ◽  
Quaternary Sediment ◽  
Seismic Recording ◽  
Placer Deposits

Bintan Island is one of the areas traversed by the Southeast Asian granitoid belt which is known to have the potential for heavy mineral placer deposits. Due to the dwindling presence of heavy mineral placer deposits in land areas, it is necessary to look for the potential presence of heavy mineral placer deposits in water areas. Searching for placer heavy mineral deposits accomodation in these waters requires subsurface mapping.The method used in this subsurface mapping is a single channel seismic method with a total of 179 lines in the direction of northeast – southwest and west – east. The results of this seismic recording are then interpreted the boundaries of the seismic facies unit and distributed using the kriging method. Furthermore, the thickness calculates by using the assumption velocity 1600 m/s.Based on the facies unit boundaries that have been interpreted, the quaternary sediments that formed in the study area are divided into 2 types of units, namely: Unit 2 which is estimated to be fluvial – transitional sediment, and Unit 1 which is estimated to be transitional sediment – shallow sea. There is also a difference in thickness patterns in these two units, where unit 2 shows a pattern of sediment thickening that resembles a paleochannel trending northeast – southwest, while unit 1 is relatively uniform.From the results of this study, it can be said that the area that has potential for heavy mineral placer  deposits is in the west - center of the southern waters of Bintan Island. Where the potential for heavy mineral placer deposits should be in the paleochannel deposits that are part of Unit 2.

Review of Matheron’s Kriging Method and its Application at the Estimation of Mineral Deposits

Veritas ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 59
Author(s):  
Edgar M Marín Ballón ◽  
Hugo Jiménez-Pacheco ◽  
Máximo O. M. Rondón Rondón ◽  
Antonio E. Linares Flores Castro ◽  
Ferly E. Urday Luna
Keyword(s):  
Geological Structure ◽  
Mineral Deposits ◽  
Kriging Method ◽  
Geostatistical Methods ◽  
Recoverable Reserves ◽  
Complex Geological Structure ◽  
The Mean ◽  
Industrial Software ◽  
Strict Stationarity ◽  
Mining Exploration

The Geostatistics provides effective tools for the solution of many problems of engineering in which the location in the space of the variable under study is considered, based on definitions of mathematics that provide the necessary foundation for its application. In particular, the Geostatistics are applied in the spatial estimation of the recoverable reserves of mineral deposits. The geostatistical methods that are used in the estimation of mineral deposits are implemented in industrial software and consider the evaluation of the complex geological structure, but these softwares only display the obtained results with an input data and do not exhibit the concepts thatthey use during the process or the methodology of its application. This happens particularly with the Kriging method, which is based on the assumption of strict stationarity, taking into account changes in the mean and local variations, therefore unreliable. In this study is established to review the Kriging method, its application in the estimation of the recoverable reserves of mining deposits and the relevance of the developed model established particularly in mines ofPeru, which use this method as part of the mining exploration for the evaluation of the feasibility of exploitation.

Altama heavy mineral deposits in southeastern Georgia

1989 ◽  
Vol 84 (2) ◽  
pp. 425-433 ◽  
Author(s):  
Fredric L. Pirkle ◽  
E. C. Pirkle ◽  
William A. Pirkle ◽  
Steven E. Dicks ◽  
Douglas S. Jones ◽  
...  
Keyword(s):  
Heavy Mineral ◽  
Mineral Deposits

New data on quaternary sediments of the atlantic ocean derived from seismic facies analysis

2012 ◽  
Vol 447 (1) ◽  
pp. 1259-1262 ◽  
Author(s):  
O. V. Levchenko ◽  
I. O. Murdmaa ◽  
E. V. Ivanova ◽  
A. D. Mutovkin ◽  
E. V. Blinova ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Facies Analysis ◽  
Seismic Facies ◽  
Quaternary Sediments ◽  
Seismic Facies Analysis

scholarly journals ENDAPAN MINERAL BERAT DI PERAIRAN PACIRAN DAN SEKITARNYA, LAMONGAN JAWA TIMUR

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Udaya Kamiludin ◽  
Maman Surachman ◽  
Wayan Lugra
Keyword(s):  
Chemical Analysis ◽  
Major Elements ◽  
Heavy Mineral ◽  
Silty Sand ◽  
Heavy Minerals ◽  
Mineral Deposits ◽  
Surficial Sediments ◽  
Sandy Silt

Sedimen permukaan dasar laut di perairan Paciran dan sekitarnya umumnya mengandung magnetit, hematit, limonit, piroksen, amfibol, biotit, pirit dan rutil. Ragam mineral berat ini terdapat pada satuan lanau pasiran, pasir lanauan dan pasir. Unsur utama pembentuk mineral berat yang terlihat dari analisis kimia berupa SiO2, Al2O3, Fe2O3, CaO, MgO, K2O,Na2O dan TiO2. Selain terbentuk secara mekanik endapan mineral berat ini, terutama magnetit dan pirit sebagian terbentuk secara insitu. The surficial sediments Paciran waters and its vicinity consist of magnetite, hematite, limonite, pyroxene, amphibole, biotite, pyrite and rutile. These heavy minerals can be found in sandy silt, silty sand and sand. The major elements of these heavy minerals can be seen from the chemical analysis as SiO2, Al2O3, Fe2O3, CaO, MgO, K2O,Na2O and TiO2. Another mechanical processes of these heavy mineral deposits, especialy magnetite and pyrite, some are formed authogenically.

scholarly journals INDIKASI LEMBAH PURBA SEBAGAI WADAH MINERAL PLASER DAN UNSUR TANAH JARANG DI PERAIRAN TANJUNG BERIKAT DAN SEKITARNYA, BANGKA TENGAH, BANGKA BELITUNG

2019 ◽  
Vol 16 (2) ◽  
Author(s):  
Ir. Udaya Kamiludin
Keyword(s):  
Rare Earth ◽  
Surface Sediment ◽  
Seismic Data ◽  
Single Channel ◽  
Sediment Thickness ◽  
Acoustic Basement ◽  
Sea Floor ◽  
Granite Intrusion ◽  
Placer Deposits ◽  
Rock Source

Secara regional daerah Bangka merupakan bagian dari Jalur Granit Utama Pembawa Timah.  Daratan nya ditandai oleh intrusi Granit Klabat yang merupakan batuan penting sumber endapan plaser. Untuk mengetahui lembah purba  maka dilakukan perekaman seismik saluran tunggal. Daerah penelitian secara administratif merupakan bagian dari wilayah Kabupaten Bangka Tengah, Propinsi Bangka Belitung. Perairan  Tanjung Berikat dan sekitarnya dicirikan oleh kelerengan dasar laut rata-curam dengan  kedalaman terukur antara 0-45 meter. Interpretasi seismik saluran tunggal menunjukkan stratigrafi seismik dari muda ke tua yaitu Runtunan A, Runtunan B, intrusi, dan Runtunan C sebagai dasar akustik. Ketebalan sedimen Runtunan A antara  5-30 meter dari  permukaan dasar laut. Lembah purba memanjang cukup lebar dan dalam pada Runtunan B yang diduga sebagai fasies pengisian lembah berupa onlap fill.  Fasies ini memiliki internal reflektor bebas pantulan-kaotik yang ditafsirkan sebagai wadah mineral plaser dan mineral ikutan pembawa  unsur tanah jarang. Endapan plaser diperkirakan merupakan  hasil pengerjaan ulang batuan granitoid.Kata Kunci : Dasar laut, runtunan stratigrafi, lembah/alur Purba, endapan plaser, dan Perairan Tanjung Berikat dan Sekitarnya, Bangka-Belitung. Geologically regional, the Bangka area is part of the Main Tin Belt Granite. The mainland of the study area is characterized by Klabat Granite intrusion which is an important rock source of placer deposits. To find out the placer availability of deposits on Paleo channel it was carried out for the recording of single channel seismic data. The study area is administratively part of the area of Central Bangka, Bangka-Belitung Province. Tanjung Berikat waters and its vicinity are characterized by the slope of the flat sea floor to steep with a measured depth of 0-45 meters. Seismic interpretation shows seismic stratigraphic from young to old consisting of sequence A, sequence B, Intrusion, and sequence C as acoustic basement. Sediment thickness of sequence A between 5-30 meters from seafloor surface sediment. Paleo channel with an elongated shape that is wide enough and deep in sequence B is interpreted as a channel filling facies in the form of onlap fill. This facies is characterized by the free to chaotic reflector configuration which is interpreted as a place for mineral placer and accessory minerals which contain rare earth elements. The availability of placer deposits is interpreted as the result of reworking of granitoid source rock.Keywords: Sea floor, stratigraphic seismic, Paleo channel, placer deposits, and Tanjung Berikat waters and surrounding, Bangka-Belitung.

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