Search Results - "LOWENSTERN, J. B"

Prodigious degassing of a billion years of accumulated radiogenic helium at Yellowstone by Lowenstern, J. B., Evans, W. C., Bergfeld, D., Hunt, A. G.

“…The study of gas emission rates, chemistry and isotopic analyses show that the rate of helium-4 emission from the crust at Yellowstone is orders of magnitude…”
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The 2017–19 activity at Mount Agung in Bali (Indonesia): Intense unrest, monitoring, crisis response, evacuation, and eruption by Syahbana, D. K., Kasbani, K., Suantika, G., Prambada, O., Andreas, A. S., Saing, U. B., Kunrat, S. L., Andreastuti, S., Martanto, M., Kriswati, E., Suparman, Y., Humaida, H., Ogburn, S., Kelly, P. J., Wellik, J., Wright, H. M. N., Pesicek, J. D., Wessels, R., Kern, C., Lisowski, M., Diefenbach, A., Poland, M., Beauducel, F., Pallister, J., Vaughan, R. G., Lowenstern, J. B.

“…After 53 years of quiescence, Mount Agung awoke in August 2017, with intense seismicity, measurable ground deformation, and thermal anomalies in the summit…”
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Magma Generation at a Large, Hyperactive Silicic Volcano (Taupo, New Zealand) Revealed by U–Th and U–Pb Systematics in Zircons by CHARLIER, B. L. A., WILSON, C. J. N., LOWENSTERN, J. B., BLAKE, S., VAN CALSTEREN, P. W., DAVIDSON, J. P.

“…Young (<∼65 ka) explosive silicic volcanism at Taupo volcano, New Zealand, has involved the development and evacuation of several crustal magmatic systems. Up…”
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Guidelines for volcano-observatory operations during crises: recommendations from the 2019 volcano observatory best practices meeting by Lowenstern, J. B., Wallace, K., Barsotti, S., Sandri, L., Stovall, W., Bernard, B., Privitera, E., Komorowski, J.-C., Fournier, N., Balagizi, C., Garaebiti, E.

“…In November 2019, the fourth Volcano Observatory Best Practices workshop was held in Mexico City as a series of talks, discussions, and panels. Volcanologists…”
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The role of magmas in the formation of hydrothermal ore deposits by Hedenquist, Jeffrey W, Lowenstern, Jacob B

“…Advances in understanding the hydrothermal systems that formed ore deposits have come from the study of their active equivalents, represented at the surface by…”
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Conversion of Wet Glass to Melt at Lower Seismogenic Zone Conditions: Implications for Pseudotachylyte Creep by Proctor, B. P., Lockner, D. A., Lowenstern, J. B., Beeler, N. M.

“…Coseismic frictional melting and the production of quenched glass called pseudotachylyte is a recurring process during earthquakes. To investigate how glassy…”
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Composition and origin of rhyolite melt intersected by drilling in the Krafla geothermal field, Iceland by Zierenberg, R. A., Schiffman, P., Barfod, G. H., Lesher, C. E., Marks, N. E., Lowenstern, J. B., Mortensen, A. K., Pope, E. C., Bird, D. K., Reed, M. H., Friðleifsson, G. Ó., Elders, W. A.

“…The Iceland Deep Drilling Project Well 1 was designed as a 4- to 5-km-deep exploration well with the goal of intercepting supercritical hydrothermal fluids in…”
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A review of contrasting behavior of two magmatic volatiles: chlorine and carbon dioxide by LOWENSTERN, J. B

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Magma Intrusion and Volatile Ascent Beneath Norris Geyser Basin, Yellowstone National Park by Wicks, C. W., Dzurisin, D., Lowenstern, J. B., Svarc, J.

“…Recent activity has provided new insights into the causes of surface deformation in and around the Yellowstone Caldera, a topic that has been debated since the…”
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Volatile emissions and gas geochemistry of Hot Spring Basin, Yellowstone National Park, USA by Werner, C., Hurwitz, S., Evans, W.C., Lowenstern, J.B., Bergfeld, D., Heasler, H., Jaworowski, C., Hunt, A.

“…We characterize and quantify volatile emissions at Hot Spring Basin (HSB), a large acid-sulfate region that lies just outside the northeastern edge of the…”
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Late Pleistocene granodiorite source for recycled zircon and phenocrysts in rhyodacite lava at Crater Lake, Oregon by Bacon, Charles R., Lowenstern, Jacob B.

“…Rhyodacite tephra and three lavas erupted ∼27 ka, interpreted to be early leaks from the climactic magma chamber of Mount Mazama, contain ubiquitous resorbed…”
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Extreme U-Th Disequilibrium in Rift-Related Basalts, Rhyolites and Granophyric Granite and the Timescale of Rhyolite Generation, Intrusion and Crystallization at Alid Volcanic Center, Eritrea by LOWENSTERN, J B, Charlier, B L A, CLYNNE, M A, Wooden, J L

“…Rhyolite pumices and co-erupted granophyric (granite) xenoliths yield evidence for rapid magma generation and crystallization prior to their eruption at 15·2 ±…”
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U–Th dating of single zircons from young granitoid xenoliths: new tools for understanding volcanic processes by Lowenstern, J.B, Persing, H.M, Wooden, J.L, Lanphere, M, Donnelly-Nolan, J, Grove, T.L

“…Multiple U–Th isotopic analyses of individual zircon crystals by ion microprobe define isochrons that discriminate between different crystallization ages of…”
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Causes of distal volcano-tectonic seismicity inferred from hydrothermal modeling by Coulon, C.A., Hsieh, P.A., White, R., Lowenstern, J.B., Ingebritsen, S.E.

“…Distal volcano-tectonic (dVT) seismicity typically precedes eruption at long-dormant volcanoes by days to years. Precursory dVT seismicity may reflect…”
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Monitoring gas and heat emissions at Norris Geyser Basin, Yellowstone National Park, USA based on a combined eddy covariance and Multi-GAS approach by Lewicki, J.L., Kelly, P.J., Bergfeld, D., Vaughan, R.G., Lowenstern, J.B.

“…We quantified gas and heat emissions in an acid-sulfate, vapor-dominated area (0.04-km2) of Norris Geyser Basin, located just north of the 0.63Ma Yellowstone…”
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Carbon dioxide and hydrogen sulfide degassing and cryptic thermal input to Brimstone Basin, Yellowstone National Park, Wyoming by Bergfeld, D., Evans, W.C., Lowenstern, J.B., Hurwitz, S.

“…Brimstone Basin, a remote area of intense hydrothermal alteration a few km east of the Yellowstone Caldera, is rarely studied and has long been considered to…”
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Evidence for Extreme Partitioning of Copper into a Magmatic Vapor Phase by Lowenstern, Jacob B., Mahood, Gail A., Rivers, Mark L., Sutton, Stephen R.

“…The discovery of copper sulfides in carbon dioxide-- and chlorine-bearing bubbles in phenocryst-hosted melt inclusions shows that copper resides in a vapor…”
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New data on magmatic H2O contents of pantellerites, with implications for petrogenesis and eruptive dynamics at Pantelleria by LOWENSTERN, J. B, MAHOOD, G. A

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River solute fluxes reflecting active hydrothermal chemical weathering of the Yellowstone Plateau Volcanic Field, USA by Hurwitz, Shaul, Evans, William C., Lowenstern, Jacob B.

“…In the past few decades numerous studies have quantified the load of dissolved solids in large rivers to determine chemical weathering rates in orogenic belts…”
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Extreme U–Th Disequilibrium in Rift-Related Basalts, Rhyolites and Granophyric Granite and the Timescale of Rhyolite Generation, Intrusion and Crystallization at Alid Volcanic Center, Eritrea by LOWENSTERN, J. B., CHARLIER, B. L. A., CLYNNE, M. A., WOODEN, J. L.

“…Rhyolite pumices and co-erupted granophyric (granite) xenoliths yield evidence for rapid magma generation and crystallization prior to their eruption at 15·2 ±…”
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