“…Scaling to planetary interiors and high pressure mineral experiments indicates that molten silicates and volatiles are entrained toward the iron core and initiate buoyant thermochemical plumes that later oxidize and hydrate the upper mantle. Surface volcanism from thermochemical plumes releases oxygen and volatiles linking atmospheric growth to the Earth’s mantle and core processes.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Chemical characteristics of dome-forming rhyolites akin to those of presently active small volcanic cones are different from those of supereruption. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Here, we show that simple extrapolations of integral models for Plinian columns to those of super-eruption plumes are not valid and their dynamics diverge from current ideas of how volcanic plumes operate. The different regimes of air entrainment lead to different shaped plumes. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Such compositional segregation was predicted, from petrological and numerical convection studies, to occur near hot deep mantle upwellings like the one often invoked to cause volcanic activity on Hawaii.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…These observations indicate that the volcanic front in subduction zones is formed both by the ascending flow and the addition of slab-derived H(2)O.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Podoconiosis is a debilitating chronic swelling of the foot and lower leg caused by long-term exposure to irritant red volcanic clay soil in the highland regions of Africa, Central America, and India. …”
Enlace del recurso
Enlace del recurso

“…We surmise that global early and middle Eocene warmth gradually diminished the weatherability of continental rocks and hence the strength of the silicate weathering feedback, allowing for the prolonged accumulation of volcanic CO(2) in the oceans and atmosphere during the MECO. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…In AD 79 the town of Herculaneum was suddenly hit and overwhelmed by volcanic ash-avalanches that killed all its remaining residents, as also occurred in Pompeii and other settlements as far as 20 kilometers from Vesuvius. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…During the Late Cretaceous and early Cenozoic the Earth experienced prolonged climatic cooling most likely caused by decreasing volcanic activity and atmospheric CO(2) levels. However, the causes and mechanisms of subsequent major global warming culminating in the late Paleocene to Eocene greenhouse climate remain enigmatic. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Geological evidence indicates that dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions. However, apart from the presumption that climate change and interference with food supply contributed to their extinction, no biological mechanism has been suggested to explain why such a diverse range of terrestrial vertebrates ceased to exist. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…WA wines were uniquely distinguished in large part with low D/H ratios and Mn concentrations derived from the isotopically light precipitation and volcanic loess soils encountered in this region, respectively. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Flank instability and sector collapses, which pose major threats, are common on volcanic islands. On 22 Dec 2018, a sector collapse event occurred at Anak Krakatau volcano in the Sunda Strait, triggering a deadly tsunami. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The results showed that the OER activity could be a function of the decorated transition metal-sulfur (M-S) bond orders with a volcanic-shaped correlation, and a strong correlation could be found when the difference of the M-S bond orders and corresponding metal-oxygen (M-O) bond orders were taken into consideration, implying that the difference in M-S and M-O bond orders could be a predictive descriptor of OER activity for M-UMON system. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…These fossils preserve evidence of simultaneous increases in coastal marine temperatures and mercury concentrations at a global scale, which appear attributable to volcanic CO(2) and mercury emissions. These early findings warrant further investigation with additional records of combined Late Cretaceous temperatures and mercury concentrations of biogenic carbonate.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Distorted olivines of enigmatic origin are ubiquitous in erupted products from a wide range of volcanic systems (e.g., Hawaiʻi, Iceland, Andes). Investigation of these features at Kīlauea Volcano, Hawaiʻi, using an integrative crystallographic and chemical approach places quantitative constraints on mush pile thicknesses. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…As the Kumamoto setting is representative of volcanic aquifer systems at convergent margins where seismotectonic activity is common, our observations and proposed model should apply more broadly.…”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The exoskeleton of the insect was primarily zeolitized during the alteration of the host rocks and later sealed in opal deposited by silica-rich fluids derived from the continental weathering of the volcanic host rocks. Organic matter is preserved in the form of amorphous carbon. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…The simulated cooling mode is determined by changes in the seasonal cycle of Arctic sea-ice that are forced by orbital variations and volcanic eruptions. The warming mode dominates in the mid-Holocene, whereas the cooling mode takes over in the late Holocene. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Geological flows—from mudslides to volcanic eruptions—are often opaque and consist of multiple interacting phases. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We studied and quantified the effects of hydrothermal processes on the composition of volcanic rocks by a novel application of the Shannon entropy, which is a measure of uncertainty and commonly applied in information theory. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso