Results 1 to 10 of about 20,752 (258)

Permian Large Igneous Provinces and Their Paleoenvironmental Effects

open access: yesGeophysical Monograph Series, Page 417-434., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley  

+8 more sources

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

open access: yesCejing 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   +6 more
doaj   +2 more sources

Pyroclastic Rocks

open access: yesJournal 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]

open access: yesمجله 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   +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]

open access: yesE3S 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   +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

open access: yesEnergies, 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   +5 more
doaj   +1 more source

Evolution Magmatism of Nagasari Volcano Dieng, Central Java, Indonesia

open access: yesJGEET: 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   +6 more
doaj   +1 more source

Volcanic facies development characteristics of Yingcheng Formation in Songliao Basin: A case study of field outcrops in Jiutai area of Jilin Province [PDF]

open access: yesYouqicang pingjia yu kaifa
To explore the intricate relationship between volcanic rock types, volcanic facies, and genetic models within the Yingcheng Formation of the Songliao Basin, and to understand their implications for oil and gas exploration, a comprehensive analysis was ...
SHEN Yanjie   +4 more
doaj   +2 more sources

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

open access: yesE3S 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   +2 more
doaj   +1 more source

Formation Mechanism and Prediction Method for the Permian Fused Breccia Tuff Reservoir, Wuxia Region, Junggar Basin

open access: yesGeofluids, 2021
Fused breccia tuff occurs globally, but its formation mechanism is very controversial. Volcanic reservoirs have developed at the bottom of the Permian Fengcheng Formation in the Wuxia region of the Junggar Basin, and here, the lithology is fused breccia ...
Duonian Xu   +6 more
doaj   +1 more source

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