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All Journal Jurnal IPTEK Journal of Earth and Marine Technology (JEMT) JURNAL PERTAMBANGAN
Harnani Harnani
Sriwijaya University
Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Industrial & Manufacturing Engineering Mechanical Engineering Physics Transportation

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Characteristic and Provenance of Talang Akar Formation Sandstone, Sukamoro Area, South Sumatera Yogie Zulkurnia Rochmana; Idarwati Idarwati; Harnani Harnani; Elisabet Dwi Mayasari
Jurnal IPTEK Vol 27, No 1 (2023): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4434

Abstract

Sukamoro area, Banyuasin Regency, South Sumatera, was the research location. This investigation focuses on the origin of sandstones from the Talang Akar Formation. In the area of investigation, sandstones are widely dispersed and exhibit a variety of properties. Due to the abundance of sandstones found and their high resistance and physical compactness, an analysis of the original rock can be carried out. Generally, the material that makes up sandstone comes from the previous rock. This investigation was undertaken using a descriptive-analytical methodology to determine the origin of the rock. The collected surface data is subsequently petrographically examined. After determining the composition of the constituent minerals, a provenance analysis was conducted to determine that the Talang Akar Formation's sandstones originated from the Magmatic Arc. Furthermore, the Talang Akar sandstone reveals the origin of the Recycle Orogen. Thus, it is considered that the sandstones of the Talang Akar Formation have seen many uplift episodes as a result of tectonic activity, almost to the point where they have experienced an increase in the maturity or stability of their continental block provenances
Petrology and Petrography of Tuffaceous Sandstones from The Cipacar and Genteng Formations in the Kadurahayu Area, Lebak Regency, Banten Province, Indonesia Salsabila Salsabila; Dwi Vina Febrim; Harnani Harnani
Journal of Earth and Marine Technology (JEMT) Vol 6, No 2 (2026)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2026.v6i2.8837

Abstract

This study analyzes the petrological characteristics and depositional mechanisms of tuffaceous sandstones in the Genteng and Cipacar Formations, located in the Kadurahayu area, Banten Province. By integrating field observations with quantitative petrography based on Pettijohn (1975), the research identifies distinct mineralogical and textural variations between the two units. The Early-Middle Pliocene Genteng Formation is classified as a lithic wacke, comprising quartz (25%), lithic fragments (28%), and volcanic glass (10%). In contrast, the Late Pliocene Cipacar Formation is categorized as a greywacke, characterized by higher volcanic glass (13%) and clay matrix (22%) content. The presence of massive structures, matrix-supported fabrics, and poor microscopic sorting indicates that these deposits originated from sediment gravity flows and subsequent volcaniclastic reworking rather than primary air-fall processes. Early diagenesis is marked by the devitrification of volcanic glass into clay minerals, which significantly influenced rock porosity and overall properties. Regionally, the Genteng Formation exhibits higher textural maturity due to more extensive transport and reworking, while the Cipacar Formation reflects distal volcanic facies with a dominant primary volcanic input. These findings enhance the understanding of the depositional processes and volcanostratigraphic evolution within the Java volcanic arc.
PENGARUH PENAMBANGAN BATUBARA RAKYAT TERHADAP KUALITAS AIR SUNGAI PANASAN, MUARA ENIM M. F. Gunawan; Harnani Harnani
Jurnal Pertambangan Vol. 8 No. 3 (2024): Agustus 2024
Publisher : Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jp.v8i3.1645

Abstract

Penambangan batubara rakyat merupakan salah satu kegiatan pertambangan batubara oleh masyarakat sekitar dalam skala kecil dan gotong royong sebagai salah satu bentuk mata pencaharian. Penambangan rakyat ini terkadang tidak memenuhi standar dalam aspek lingkungan, sehingga bersifat merusak alam dan menyebabkan terganggunya keseimbangan antara lingkungan dan pengelolaan sumber daya alam. Kegiatan eksploitasi tersebut dapat berdampak terhadap kualitas lingkungan masyarakat itu sendiri terutama terhadap kualitas aliran sungai apabila dibiarkan secara terus-menerus. Oleh karenanya penelitian ini bertujuan untuk menentukan kualitas baku mutu air Sungai Panasan yang terdampak oleh adanya penambangan batubara rakyat pada daerah penelitian. Penentuan kualitas air sungai merujuk pada parameter dalam Peraturan Menteri Kesehatan RI Nomor 32 Tahun 2017, kemudian menggunakan metode Storet dalam menentukan indeks pencemaran sungai menurut Keputusan Menteri Lingkungan Hidup Nomor 115 Tahun 2003. Dari hasil penelitian didapatkan bahwa kondisi parameter kimia (Flourida, Kesadahan, Fe, Ph) dan fisika (kekeruhan, bau, DHL, dan rasa) di daerah penelitian tidak memenuhi syarat sesuai baku mutu dengan nilai Indeks Storet sebesar -25 atau tergolong tercemar sedang. Dengan demikian kondisi tersebut membahayakan bagi masyarakat dan lingkungan sekitar aliran Sungai Panasan.
Co-Authors Dwi Vina Febrim Elisabet Dwi Mayasari Idarwati Idarwati M. F. Gunawan Salsabila Salsabila Yogie Zulkurnia Rochmana