Akses terbuka Jurnal
MINERALOGICAL ANALYSIS OF ROCK WEATHERING AND ITS INFLUENCE ON SLOPE FAILURE ALONG THE JAYAPURA CITY RING ROAD
Jurnal Ilmiah Ilmu Terapan Universitas Jambi · Vol. 10 No. 2 (2026) · hlm. 804–822
- ISSN
- 2580-2259, 2580-2240
- Terbit
- 2026-04-29
- Penerbit
- LPPM Universitas Jambi
- Bahasa
- en
Abstrak
Slope failure along the Jayapura City Ring Road persisted despite shotcrete reinforcement, indicating that instability is not controlled solely by slope geometry or surface confinement. Field evidence points to weakening within foliated metamorphic rocks affected by tropical weathering, where mineral alteration progressively modifies the internal structure. This study examines how mineralogical transformations govern subsurface degradation and contribute to failure beneath reinforced slopes. A case study approach was applied using two representative samples (ST-01 and ST-02) obtained directly from the failure zone. Petrographic analysis of ~30 μm thin sections was conducted to evaluate mineral textures, fabric orientation, and alteration pathways. X-ray diffraction (XRD) was used to identify and semi-quantify the mineral phases, including albite, quartz, chlorite, muscovite, sericite, and magnetite. Subsurface conditions were assessed using ADMT resistivity profiling across a frequency range of 0.0001–10,000 Hz, reaching depths of approximately 300 m. The results indicate a mineralogical transition from a wollastonite–actinolite–chlorite assemblage in ST-01 to a chlorite–muscovite–sericite-dominated system in ST-02. The XRD data show a decrease in albite from ~19.74% to ~11.61%, while an unresolved fraction exceeding ~20% suggests the presence of poorly crystalline phases. Petrographic observations revealed that chlorite and sericite were concentrated along foliation and microfractures. The resistivity data identified a low-resistivity zone (10–20 Ωm) at depths of ~10–60 m, corresponding to altered and fluid-influenced domains. These findings indicate that weathering reduces cohesion along structurally controlled planes while preserving partial framework integrity, shifting the locus of failure to the subsurface beneath the shotcrete layer.
Kata kunci
Jaringan kolaborasi para penulis
23 penulis · 56 tautan kepenulisan bersama · 11 lintas organisasi
Arahkan kursor atau ketuk sebuah nama untuk menyorot rekan penulisnya. Klik dua kali untuk membuka halaman penulis.
- Cenderawasih University
- Hasanuddin University
- Sumatera Institute of Technology
- Organisasi berbeda
- Organisasi sama
- Afiliasi tidak diketahui
- Garis lebih tebal = lebih banyak artikel bersama · lingkaran lebih besar = lebih banyak artikel
Tampilkan sebagai tabel
| Rekan penulis | Organisasi | Artikel bersama |
|---|---|---|
| Harnanti Yogaputri Hutami | Sumatera Institute of Technology | 4 |
| Harsan Ingot Hasudungan | Cenderawasih University | 3 |
| Thomas Pagasis | Cenderawasih University | 1 |
| Hendra Kurniawan Maury | Cenderawasih University | 1 |
| Leonard Siregar | Cenderawasih University | 1 |
| Rosye H.R. Tanjung | Cenderawasih University | 1 |
| Rosye H.R. Tanjung | Cenderawasih University | 1 |
| Kalvin Paiki | Cenderawasih University | 1 |
| Korinus Rejauw | Cenderawasih University | 1 |
| Novita Reskiyah Sari | Hasanuddin University | 1 |
| Muh Resky Ariansyah | Hasanuddin University | 1 |
| Muh Reza Pahlevi | Hasanuddin University | 1 |
| Bambang Harimei | Hasanuddin University | 1 |
| Muhammad Nasri | Hasanuddin University | 1 |
| Syamsuddin Syamsuddin | Hasanuddin University | 1 |
| Erlangga Ibrahim Fattah | Sumatera Institute of Technology | 1 |
Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.