Results 1 to 10 of about 623,895 (284)

Welded pyroclastic rock at Tongariro [PDF]

New Zealand Journal of Geology and Geophysics, 1963
Abstract Although the rocks of Tongariro National Park have been mapped and their petrograplty is reasonably well known, little attention has so far been paid to their physical character and modes of eruption. Lava, scoria, and ash are the most common types, though hot avalanches that erupted in 1949 and 1954 have been described by Battey (1949) and ...
J. H. Healy
semanticscholar   +3 more sources

PETROGRAPHY OF PYROCLASTIC ROCK MOUNT MASURAI JAMBI PROVINCE

JOURNAL ONLINE OF PHYSICS
The magmatic arc of Sumatra Island, which is indicated by the presence of the Barisan Mountains zone on the west side of Sumatra Island with a general direction northwest - southeast, makes Mount Masurai, which is administratively in Merangin Regency, Jambi Province, become one of the volcanoes on Sumatra Island.
Kirana, Febiyora Chandra, Nuriil Tadersi, Risnaliyah, Hasbullah, Andrea, Siregar, Anggi Deliana, Ritonga, D.M Magdalena, Utama, Hari Wiki, Misnawati, Misnawati   +6 more
semanticscholar   +5 more sources

Mineralogical and petrophysical research of pyroclastic rock of volcano Eyjafjallajokull (Iceland)

RUDN Journal of Engineering Research, 2011
Take a mineralogical and petrophysical research of pyroclastic rock of volcano Eyjafjallajökull. Test a mineral composition and petrophysical properties of pyroclastic rock.
V Yu Abramov, G N Kolosova, T V Kondratieva   +2 more
doaj   +1 more source

Evaluation Method of Pyroclastic Rock Reservoir Based on Gravel Parent Rock Composition

Cejing jishu
The fault system of a basin is complex and has the characteristics of multiple source, short source and rapid phase transition. T formation develops a set of stable sand conglomerate, which has great exploration potential.
DONG Lei, LI Wentao, DING Yonghao, ZHANG Zhiguo, XIA Xue, PANG Jiarui, GAO Feng   +6 more
doaj   +2 more sources

Pyroclastic Rocks

Journal of Volcanology and Geothermal Research, 1985
Most of the advances in volcanology during the past 20 years have concerned the recognition, interpretation, and mode of emplacement of pyroclastic rocks. The literature on pyroclastic rocks is widely scattered, in part because the field draws from sedimentology, igneous petrology, physics, and fluid mechanics, and there have been few review papers on ...
G. Camus, P. Boivin
  +7 more sources

The application of vertical electrical sounding in geomechanical recognition of host rock mass of anomaly III of Narigan deposit, Bafgh region, Central Iran zone [PDF]

مجله علوم و فنون هسته‌ای, 2023
The electrical method as a geophysical survey can show the geological parameters including fragmentation, rock mass alteration index, saturation percentage and groundwater quality.
S.H. Beheshti Bafqi, A.R. Yarahmadi Bafqi, A. Gorbani, H. Gari   +3 more
doaj   +1 more source

Multi-Rock Mass Classification Systems for the Assessment of Excavation Method and Support Design of Spillway Tunnel, Sidan Dam, Bali, Indonesia [PDF]

E3S Web of Conferences, 2023
This paper presents the implementation of rock mass classification systems to determine the excavation method and the support design of the Spillway Tunnel, Sidan Dam, Bali, Indonesia.
Arianto Benny, Indrawan I. Gde Budi, Warmada I. Wayan   +2 more
doaj   +1 more source

Reservoir Characteristics and Controlling Factors of Sedimentary Pyroclastic Rocks in Deep-Buried Basins: A Case Study of Yingtai Fault Depression, Southern Songliao Basin

Energies, 2022
In this article, based on core description, thin section, scanning electron microscope (SEM), well logging and reservoir physical properties, the reservoir controlling factors of sedimentary pyroclastic rocks in deep-buried basins are assessed via the ...
Ranlei Zhao, Xiao Xu, Wentao Ma, Cunlei Li, Qiushi Zhang, Qingyou Yue   +5 more
doaj   +1 more source

Evolution Magmatism of Nagasari Volcano Dieng, Central Java, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2022
Nagasari Volcano, part of the Dieng volcanic complex, is one of the unique volcanoes in Central Java. Around this volcano grow eruption craters, volcanic cones, and pyroclastic flow ridges. There were several 14 eruption centers around Mount Nagasari, so
Dwi Fitri Yudiantoro, Intan Paramita Haty, Setia Pambudi, Elisabet Magdalena, Armala Putri, I. Takashima, M. Abdurrachman   +6 more
doaj   +1 more source

Recommendations of excavation and support systems of Pamukkulu Dam diversion tunnel based on correlation of rock mass classification between RMR and GSI [PDF]

E3S Web of Conferences, 2021
This paper presents the results of geological engineering research conducted to determine the character of rock masses, recommendations of tunnel excavation method and support system based on standup time estimates in unsuported conditions.
Nasrulloh Dico, Setianto Agung, Indrawan I Gde Budi   +2 more
doaj   +1 more source