Results 11 to 20 of about 28,756 (261)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 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.
Richard E. Ernst   +8 more
wiley  

+23 more sources

A Log‐Ratio‐Based Algorithm for Petrologic Mass‐Balance Problems and Uncertainty Assessment

open access: yesGeochemistry, Geophysics, Geosystems, 2023
We provide a new algorithm for mass‐balance calculations in petrology and geochemistry based on the log‐ratio approach championed initially by John Aitchison (e.g., Aitchison, 1982, https://doi.org/10.1111/j.2517-6161.1982.tb01195.x; Aitchison, 1984 ...
Kelsey Prissel   +2 more
doaj   +1 more source

How inclusive is volcanology? Insights from global bibliometric analyses

open access: yesVolcanica, 2023
In this study, we use bibliometric methods to assess the way in which local researchers are included in volcanological publications by comparing the affiliation of authors with the country in which researched volcanoes are located.
Geoffrey A Lerner   +4 more
doaj   +1 more source

A new permanent, low-cost, low-power SO2 camera for continuous measurement of volcanic emissions

open access: yesFrontiers in Earth Science, 2023
Since its introduction to volcanology in the mid-2000 s, the SO2 camera has become an important instrument for the acquisition of accurate and high time-resolution SO2 emission rates, aiding in hazard assessment and volcanological research. However, with
Thomas Charles Wilkes   +10 more
doaj   +1 more source

Vegetation dieback as a proxy for temperature within a wet pyroclastic density current: A novel experiment and observations from the 6th of August 2012 Tongariro eruption [PDF]

open access: yes, 2014
The 6th of August 2012 eruption of Te Maari (Mt Tongariro, New Zealand) generated wet pyroclastic density currents (PDCs) which caused widespread dieback of vegetation (singed, brown foliage) in their path.
Bylsma, Rebecca Johanna   +5 more
core   +2 more sources

Distal occurrence of mid-Holocene Whakatane Tephra on the Chatham Islands, New Zealand, and potential for cryptotephra studies [PDF]

open access: yes, 2011
The Whakatane Tephra, a rhyolitic tephra erupted ca. 5500 cal. BP from Okataina Volcanic Centre, central North Island, has been identified on the Chatham Islands which lie ˜900 km east of Christchurch, New Zealand.
Hogg, Alan G.   +3 more
core   +2 more sources

Exploring and Modeling the Magma–Hydrothermal Regime

open access: yesGeosciences, 2020
This special issue comprises 12 papers from authors in 10 countries with new insights on the close coupling between magma as an energy and fluid source with hydrothermal systems as a primary control of magmatic behavior.
John Eichelberger   +4 more
doaj   +1 more source

Spherulite formation in obsidian lavas in the Aeolian Islands, Italy [PDF]

open access: yes, 2017
The authors wish to gratefully acknowledge Andy Tindle (The Open University) for assistance with EMP analyses, and Richard Darton and David Evans (Keele University) for assistance with XRD and Prof Alun Vaughan and Nicola Freebody (University of ...
Bullock, Liam A.   +2 more
core   +2 more sources

The impact of secondary mineral formation on Na-K-geothermometer readings: a case study for the Valley of Geysers hydrothermal system (Kronotsky State Nature Biosphere Reserve, Kamchatka)

open access: yesЗаписки Горного института, 2023
The temperature in the Valley of Geysers (Kamchatka) geothermal reservoir calculated using the feldspar Na-K-geothermometer has been steadily increasing over the past 10 years on average from 165 to 235 °C, which is close to the temperature values of a ...
Anastasia V. Sergeeva   +6 more
doaj  

Chemical weathering fluxes from Paramushir volcanic island (Kuril Island arc, Russia) [PDF]

open access: yesE3S Web of Conferences, 2019
The rates of the chemical erosion for Paramushir Island, north Kuril Arc, were studied. The rates of the chemical erosion for Paramushir Island, north Kuril Arc, were studied.
Kalacheva Elena   +2 more
doaj   +1 more source

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