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All Journal Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Geosaintek
Lia Fitria Rahmatillah
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Education Physics

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Analisis Granulometri Batupasir Formasi Tutut di Kecamatan Beutong, Kabupaten Nagan Raya, Provinsi Aceh Anggi Aulia; Dina Gunarsih; Lia Fitria Rahmatillah; Dewi Sartika; Tika Hapsari; Akmal Muhni
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 2 (2026): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i2.1791

Abstract

This study examines the grain-size distribution of the Tutut Formation sandstone using granulometric analysis. The purpose of this granulometric observation is to determine the depositional environment and its transportation mechanisms. In addition to using granulometric methods, this study also includes geological mapping to observe the rock lithology in the field. The results show that the study location consists of sandstone and mudstone units of the Tutut Formation, Meulaboh sand deposit units, and alluvial deposit units. The characteristics of Tutut Formation sandstone are gray-brown, reddish-brown due to weathering, coarse to fine sand grain size, medium to slightly rounded roundness, and does not react with HCl. Based on granulometric analysis, Tutut Formation sandstone has an average grain size of 0.214-0.327 ϕ, which is classified as coarse sand. The degree of sorting is 0.321 ϕ to 0.417 ϕ, with an average of 0.35 ϕ, so it is classified as good. Skewness values range from 0.107 to 0.263, with an average of 0.1775 ϕ, indicating fine skewness. The 0.1775 ϕ of the average skewness value indicates that the flow in this depositional environment is turbulent and a river depositional environment. Meanwhile, the kurtosis value ranges from 0.060 to 0.11, indicating a platykurtic to highly platykurtic distribution, suggesting a fairly diverse and even grain-size distribution from fine sizes in the matrix to coarse sizes. The diverse grain size implies that the matrix fills the pores between coarse grains. Thus, porosity is not available and has no potential as a reservoir rock.
UNSUR TANAH JARANG PADA BATUPASIR: STUDI KASUS PADA BATUPASIR FORMASI RAMPONG DI DESA KETUKAH, GAYO LUES, ACEH Dina Gunarsih; Lia Fitria Rahmatillah; Akmal Muhni; Dewi Sartika; Tika Hapsari; Yurda Marvita
Jurnal Geosaintek Vol. 11 No. 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v11i2.2592

Abstract

Unsur tanah jarang (UTJ) semakin diminati dalam beberapa tahun terakhir karena meningkatnya permintaan teknologi kendaraan listrik, industri hijau, dan industri lainnya. Indonesia memiliki potensi UTJ yang berkaitan dengan keberadaan batuan beku dan batuan sedimen. Penelitian pada batupasir Formasi Rampong di Ketukah, Gayo Lues menarik dilakukan karena batuan ini berasal dari pelapukan batuan granit. Tujuan studi ini adalah untuk mengetahui komposisi batupasir Formasi Rampong dan unsur – unsur kimia batuan, termasuk unsur utama dan UTJ. Metode yang digunakan meliputi analisis petrografi dan geokimia menggunakan teknik XRF dan ICP. Enam sampel petrografi diamati terdiri dari empat batupasir quartz arenite dan dua batupasir feldsphatic greywacke. Kedua jenis batupasir tersebut merupakan batuan yang tersusun dari dominan butiran, dengan komposisi matriks 2.5% - 4.5% pada batupasir quartz arenite dan 18.83% - 21.13% pada batupasir feldsphatic greywacke. Quartz arenite tersusun dari mineral kuarsa, sedikit litik dan muskovit, semen silika dan semen oksida besi. Feldsphatic greywacke terdiri dari kuarsa, K-Feldspar, plagioklas, fragmen litik, muskovit, semen silika serta semen oksida besi. Analisis geokimia mengungkapkan bahwa UTJ pada batupasir ini adalah Neodimium (Nd) berkisar antara 19.21 ppm hingga 23.81 ppm dan Praseodimium (Pr) berkisar antara 5.76 ppm hingga 5.89 ppm. Unsur tersebut diinterpretasikan terkonsentrasi dalam mineral lempung dan oksida besi dengan pengkayaan relatif rendah.
PROVENANCE ANALYSIS OF SANDSTONE IN THE SEURELA FORMATION IN JEUMPA DISTRICT, BIREUN REGENCY, ACEH PROVINCE Dewi Sartika; Shafira Putri Rizani; Rifqan Rifqan; Akmal Muhni; Dina Gunarsih; Lia Fitria Rahmatillah; Fahri Adrian; Tika Hapsari
Jurnal Geosaintek Vol. 12 No. 3 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v12i3.9194

Abstract

Based on geological conditions, the research location is in the Seurela Formation. The Seurela Formation has a lithology consisting of sublitoral calcareous sandstone and mudstone with a Pliocene age. Although the Seurela Formation has been extensively studied regarding its stratigraphy and sedimentology, information concerning sandstone provenance—specifically based on quantitative petrographic analysis and tectonic setting interpretation—remains limited. Consequently, the origin of the sedimentary material and its relationship to the region's tectonic evolution are not yet comprehensively understood. Provenance analysis was conducted on the sandstone using geological mapping and petrography methods. The geological mapping method was carried out by collecting data directly in the field through observations of rock lithology. Meanwhile, the petrography method was analyzed using JMicrovision to calculate the mineral composition in thin sections of the rock. This study was conducted to determine the geological conditions and provenance of the sandstone in the Seurela Formation at the research location. Based on the research that has been done, the results indicate that the Seurela Formation is found with alternating carbonate silt sandstone. Provenance analysis at the research location was conducted on four sandstone samples with codes OC52, OC57, OC25, and OC27. Provenance analysis was performed using a QFL diagram. Based on the origin analysis, the sandstone in the Seurela Formation indicates from a tectonic recycling orogen and an eroded arc environment.
Co-Authors Akmal Muhni Anggi Aulia Dewi Sartika Dewi Sartika Dina Gunarsih Fahri Adrian Muhammad Arief Akbar Rifqan, Rifqan Shafira Putri Rizani Tika Hapsari Yurda Marvita