Results 41 to 50 of about 146,316 (260)

Reconstructing the complex history of a small-volume basaltic volcano (Ngatutura volcanic field, New Zealand) : The role of subsurface processes and implications for diatreme formation : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Earth Science at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2016
Monogenetic volcanism is very common on continents and often occur very close to civilisation. Limiting the ability of volcanologists to predict the location and extent of future eruptions at monogenetic volcanic fields is the lack of knowledge about ...
Van Niekerk, Rickus
core  

Source and dynamics of a volcanic caldera unrest : Campi Flegrei, 1983–84 [PDF]

open access: yes, 2017
Acknowledgements We thank Tiziana Vanorio, Antonella Amoruso, Luca Crescentini, Nicholas Rawlinson, Yasuko Takei, and David Cornwell for the valuable suggestions regarding the methodology and interpretation.
Castellano, Mario   +7 more
core   +1 more source

Fine description and geologic modeling for volcanic gas reservoirs

open access: yesPetroleum Exploration and Development, 2010
To understand the geology of volcanic gas reservoir development, research was carried out on volcanic rock, body lithology, lithofacies, fractures, gas and water zones, reservoir classification, and geologic modeling for volcanic gas reservoirs.
Song Xinmin   +5 more
doaj   +1 more source

Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]

open access: yes, 2009
Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
Ellam, R.M.   +5 more
core   +1 more source

Activity Enhancement Study of Xinjiang Silica-Alumina Volcanic Rock Powder through Different Activation Processes

open access: yesApplied Sciences
In response to the dilemma of the scarcity of mineral additions and the high cost of long-distance transport in Hotan, Xinjiang, China, this paper presented an activation process study on the feasibility of volcanic rock powders unique to this region as ...
Shuhong Yang   +5 more
doaj   +1 more source

The Nature of Cima Dome [PDF]

open access: yes, 1954
In the Mojave Desert of southeasternmost California is a remarkably smooth, symmetrical rock-alluvial dome which takes its name from Cima on the Union Pacific Railroad. Lawson (1915, pp.
Sharp, Robert P.
core  

Influence of Curing Age and Mix Composition on Compressive Strength of Volcanic Ash Blended Cement Laterized Concrete [PDF]

open access: yes, 2012
This study investigates the influence of curing age and mix proportions on the compressive strength of volcanic ash (VA) blended cement laterized concrete. A total of 288 cubes of 100mm dimensions were cast and cured in water for 3, 7, 28, 56, 90 and 120
Babafemi, A. J   +2 more
core   +2 more sources

Diagenetic Evolution of Syngenetic Volcanogenic Sediment and Their Influence on Sandstone Reservoir: A Case Study in the Southern Huizhou Sag, Pearl River Mouth Basin, Northern South China Sea

open access: yesJournal of Marine Science and Engineering
The Paleogene sandstone reservoir of Huizhou Sag is an important target for deep exploration in the Pearl River Mouth Basin, South China Sea. Because of the intense volcanic activity, it had a significant impact on the development of reservoirs, making ...
Jiahao Chen   +7 more
doaj   +1 more source

Probabilistic enhancement of the Failure Forecast Method using a stochastic differential equation and application to volcanic eruption forecasts

open access: yes, 2018
We introduce a doubly stochastic method for performing material failure theory based forecasts of volcanic eruptions. The method enhances the well known Failure Forecast Method equation, introducing a new formulation similar to the Hull-White model in ...
Bevilacqua, Andrea   +5 more
core   +1 more source

Characteristics and accumulation mode of volcanic rock reservoir of the Fengcheng Formation in the southern of Mahu Sag, Junggar Basin

open access: yes地质科技通报
Objective To clarify the oil and gas accumulation patterns and main controlling factors of the thin weathered crust volcanic rock reservoir at the top of Member 2 of the Fengcheng Formation in the southern Mahu Sag(Manan Sag). Methods This paper provides
Xincai YOU   +9 more
doaj   +1 more source

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