KHUMAIRO, SAVIRA ZAHRUL (2025) PEMODELAN 3D UNTUK IDENTIFIKASI PERSEBARAN ENDAPAN NIKEL LATERIT BERDASARKAN DATA ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) PADA DAERAH ‘’SZA’’, SULAWESI TENGGARA. Skripsi thesis, UPN Veteran Yogyakarta.
![[thumbnail of 1_Skripsi Full_115210012_Savira Zahrul Khumairo.pdf]](http://eprints.upnyk.ac.id/style/images/fileicons/text.png) |
Text
1_Skripsi Full_115210012_Savira Zahrul Khumairo.pdf Restricted to Repository staff only Download (6MB) |
|
Text
2_Cover_115210012_Savira Zahrul Khumairo.pdf Download (92kB) |
|
Text
3_Abstrak_115210012_Savira Zahrul Khumairo.pdf Download (240kB) |
|
Text
4_Halaman Pengesahan_115210012_Savira Zahrul Khumairo.pdf Download (680kB) |
|
Text
5_Daftar Isi_115210012_Savira Zahrul Khumairo.pdf Download (143kB) |
|
Text
6_Daftar Pustaka_115210012_Savira Zahrul Khumairo.pdf Download (80kB) |
Abstract
ABSTRAK
PEMODELAN 3D UNTUK IDENTIFIKASI PERSEBARAN
PROSPEK ENDAPAN NIKEL LATERIT BERDASARKAN
DATA ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT)
PADA DAERAH ‘’SZA’’, SULAWESI TENGGARA
Oleh
Savira Zahrul Khumairo
NIM : 115210012
(Program Studi Sarjana Teknik Geofsika)
Kebutuhan industri akan nikel di Indonesia yang semakin meningkatkan sehingga
dibutuhkan eksplorasi nikel berkelanjutan. Pada daerah ‘’SZA’’, Sulawesi
Tenggara merupakan daerah penghasil nikel di Indonesia. Eksplorasi nikel
menggunakan metode geofisika berupa metode Electrical Resistivity Tomography
(ERT) dikarenakan dapat mengidentifikasi mineral – mineral yang berada di bawah
permukaan. Penelitian ini bertujuan untuk menentukan batas – batas endapan nikel
laterit berdasarkan nilai resisitivitas batuan, mengetahui pola ketebalan persebaran
endapan nikel laterit berdasarkan nilai resistivitas batuan, dan memodelkan
persebaran lapisan laterit menggunakan metode electrical resistivity tomography
(ERT) dengan menggunakan konfigurasi wenner alpha yang dapat digunakan untuk
mengidentifikasi adanya prosepek endapan nikel laterit pada daerah penelitian.
Penelitian ini memiliki panjang 2 variasi panjang lintasan 329 m & 480 m yang
divalidasi dengan 9 data bor. Hasil penelitian ini menunjukkan klasifikasi sebaran
nilai resistivitas untuk profil nikel laterit di daerah penelitian yaitu top soil (0 – 145
Ωm) respons resistivitasnya rendah yang memiliki kandungan mineral berupa
hematite, limonit (145 – 345 Ωm) respons resistivitasnya medium sampai tinggi
yang memiliki mineral hematite dan goetit , saprolit (41 – 200 Ωm) respons
resistivitasnya rendah sampai medium yang memiliki kandungan mineral berupa
garnierit dan sarpentint, bedrock (130 - > 736 Ωm) respons resistivitasnya tinggi
yang memiliki batuan asal berupa peridotite. Pada peta persebaran ketebalan profil
nikel laterit, lapisan top soil memiliki tebal berkisar 3.3 – 24.4 meter, lapisan
limonit memiliki tebal berkisar 2.6 – 15.6 meter, dan lapisan saprolit memiliki tebal
berkisar 3.7 – 15.9 meter. Pemodelan 3D telah dibuat yang dapat
menginterpretasikan pola persebaran endapan nikel laterit pada daerah penelitian
yang tersebar pada daerah timur relativ memiliki ketebalan laterisasi yang lebih
tebal dikarenakan morfologi terbentuknya laterisasi menyebabkan batuan dasar
lebih tinggi.
Kata Kunci : Electrical Resisitivity Tomography, Konfigurasi wenner alpha,
Nikel Laterit, Resistivitas
viii
ABSTRACT
3D MODELING FOR THE IDENTIFICATION OF THE
DISTRIBUTION OF LATERITE NICKEL DEPOSITS BASED ON
ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) DATA IN
THE “SZA” AREA, SOUTHEAST SULAWESI
By
Savira Zahrul Khumairo
Student ID: 115210012
(Bachelor's Program in Geophysics Engineering)
The growing demand for nickel in Indonesia's industry requires sustainable nickel
exploration. The “SZA” region in Southeast Sulawesi is a nickel-producing area in
Indonesia. Nickel exploration uses a geophysical method called Electrical
Resistivity Tomography (ERT) because it can identify minerals beneath the surface.
This study aims to determine the boundaries of laterite nickel deposits based on
rock resistivity values, understand the thickness distribution pattern of laterite
nickel deposits based on rock resistivity values, and model the distribution of
laterite layers using the electrical resistivity tomography (ERT) method with a
Wenner alpha configuration, which can be used to identify potential laterite nickel
deposits in the study area. This study has two variations in survey length: 329 m
and 480 m, validated with nine borehole data. The results of this study show the
classification of resistivity values for laterite nickel profiles in the study area,
namely topsoil (0–145 Ωm) with low resistivity response containing hematite and
limonite minerals, (145–345 Ωm) with medium to high resistivity response
containing hematite and goethite minerals, saprolite (41–200 Ωm) with low to
medium resistivity response, containing minerals such as garnierite and serpentine,
and bedrock (130–>736 Ωm) with high resistivity response, composed of peridotite.
On the map of nickel laterite thickness distribution, the topsoil layer has a thickness
ranging from 3.3 to 24.4 meters, the limonite layer has a thickness ranging from
2.6 to 15.6 meters, and the saprolite layer has a thickness ranging from 3.7 to 15.9
meters. A 3D model has been created that can interpret the distribution pattern of
laterite nickel deposits in the study area, which is relatively thicker in the eastern
part due to the morphology of laterite formation causing the bedrock to be higher.
Keywords: Electrical Resistivity Tomography, Wenner Alpha Configuracy, Laterite
Nickel, Resistivity
ix
| Item Type: | Tugas Akhir (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Electrical Resistivity Tomography, Wenner Alpha Configuracy, Laterite Nickel, Resistivity |
| Subjek: | Q Science > QE Geology |
| Divisions: | Fakultas Teknologi Mineral dan Energi > (S1) Teknik Geofisika |
| Depositing User: | Eko Yuli |
| Date Deposited: | 09 Oct 2025 06:10 |
| Last Modified: | 09 Oct 2025 06:10 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/44167 |
Actions (login required)
 |
View Item |