Abstract The Dinner Creek Tuff is an important unit of mid-Miocene rhyolite volcanism contemporaneous to flood basalts the Columbia River magmatic province. Field mapping along with analytical data tuff samples identify two calderas, Castle Rock and Ironside Mountain as venting sites widespread ignimbrites Tuff. Both calderas lie within area proposed general storage main-phase Basalt magmas. ca...

Explosive volcanic eruptions can occur within days to years after an earthquake, suggesting a causal relation between them. Such paired seismic–volcanic events in the past, which occurred on human timescale, only be confirmed by field relationship of eruptive products. The Southern Kusandong Tuff (SKT) is ignimbrite Cretaceous backarc basin Korea, shows north-to-south variations grain component...

11 The Orapa Diamond Mine (Republic of Botswana) exposes a bi-lobate kimberlite 12 pipe that erupted during the Late-Cretaceous epoch (∼93 Ma) through Archaean 13 basement and volcano-sedimentary rocks of the Karoo Supergroup. Geological map14 ping of the crater zone of the South Pipe has revealed a 15–25 m thick in-situ 15 kimberlite pyroclastic flow deposit. The pyroclastic deposit fills in t...

We have developed seismic velocity models for the heated rock surrounding a tunnel in Yucca Mountain tuff and compared the results with field data obtained at the Yucca Mountain drift scale test DST facility from 1998 to 2002. During that time, the tunnel was heated to replicate the effects of long-term storage of decaying nuclear waste and to study the effects of extreme temperatures on the su...

The tuff, a part of coal-bearing strata, in the Zhongliangshan coal mine, Chongqing, southwestern China, hosts a rare metal deposit enriched in rare earth elements (REE), Ga and Nb. However, the extraction techniques directly related to the recovery of rare metals in coal-bearing strata have been little-studied in the literature. The purpose of this paper is to investigate the extractability of...

On Ioto Island (Iwo-jima), 44 phreatic eruptions have been recorded since 1889, when people began to settle there. Four of these eruptions, after the beginning of continuous observation by seismometers in 1976, were accompanied by intense seismic activity and rapid crustal deformation beforehand. Other eruptions on Ioto were without obvious crustal activities. In this paper, we discuss the mech...

Natural radioactivity is the main source of radiation which affects the human body [1]. Anthropogenic activities (e.g. high-altitude fl ights, mining and living in buildings) have increased the exposure to these sources [2]. In particular, the problem of natural radioactivity in buildings is of great interest since the building materials are of terrestrial origin and they consequently contain s...

Abstract Enhanced geothermal systems (EGS) offer the potential for a much larger energy source than conventional hydrothermal systems. Hot, low-permeability rocks are prevalent at depth around world, but challenge of extracting thermal depends on ability to create and sustain open fracture networks. Laboratory experiments were conducted using suite selected rock cores (granite, metasediment, rh...

Alongside volcanic eruptions in the middle and late Permian, sedimentary environment process changed, lithofacies characteristics varied conspicuously marine deposits of Sichuan Basin (China). The tuffaceous rocks, as a new type unconventional reservoir, provide strong evidence for influences on lithology reservoir potential rocks. With experimental studies relying field outcrops, thin sections...