 | Duffield, W.A., Bullen, T.D., Clynne, M.A., Fournier, R.O., Janik, C.J., Lanphere, M.A., Lowenstern, Jacob, Smith, James G., Giorgis, L.W., Kahsai, Gabreab, Mariam, K.W., Tesfai, Theoderos (1997) Geothermal potential of the Alid Volcanic Center, Danakil Depression, Eritrea. Open-File Report Vol. 1997 (97-291) US Geological Survey doi:10.3133/ofr97291 | Report (issue) | | GEOTHERMAL POTENTIAL OF THE ALID VOLCANIC CENTER, DANAKIL DEPRESSION, ERITREA By: Wendell A. Duffield1 Thomas...Ministry of Energy, Mines and Water Resources, Eritrea Open-File Report 97-291 This report is preliminary...the terms of PAS A Number AOT-0002-P-00-5033-00. Alid structural dome as seen from the field camp. View...10, 1996, in the west part of the summit area of Alid. View is to the westnorthwest. Mountains in the...west of Alid graben. Back row, left to right: Glenn Anders, head ofUSAID mission in Eritrea; Leake W/Giorgis |  | | Report (issue) | | world ALID VOLCANO IN THE COLONY OF ERITREA (Translation of Angelo Marini's "IL VULCANO ALID NELLA COLONIA...COLONIA ERITREA")' Edited and Translated by Jacob B. Lowenstern 1 and Francesco Villa^ *originally published...1998 Alid Volcano in the Colony of Eritrea (Translation of Angelo Marini's "H Vulcano Alid nella Colonia...Colonia Eritrea") UNITED STATES DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL............................... 2 Alid Volcano in the Colony of Eritrea (L'Universo: Jan. 1938, v. 19, p |  | | Journal (article/letter/editorial) | | Abstract Rhyolite lavas and xenoliths from the Salton Sea geothermal field (Southern California) provide insights...silicic plutons in the subsurface of the Salton Sea geothermal field isotopically exchanged with meteoric...Elsevier B.V. All rights reserved. Keywords: Salton Sea geothermal field; U-238/Th-230; O-18/O-16; zircon;...sediment accumulation, high heat flow, magmatism and sea-floor spreading that accompanies fragmentation of...[1,2]. Onshore, the region hosts extensive geothermal systems (e.g., Salton Sea, Cerro Prieto), and there |  | | Journal (article/letter/editorial) | | the calculated peaks based upon the 246 amu mass region. Zirconium oxide molecular ion peaks (Fig. 2) were...is among the highest bulk rock U abundances for volcanic rocks in the Western U.S.A. (Castor and Henry...SB0402 sampled at Obsidian Butte: N 33°10â14.6ââ; W 115°38â03.1ââ. || SB0401 sampled at Red Island: N 33°11â59...are reported in Table 1 and plotted in Figure 4. Obsidian hydration dating of Salton Buttes rhyolite yielded...D. (2000) Geology, geochemistry, and origin of volcanic rock-hosted uranium deposits in northwestern Nevada |  | | Book | | three major structures of the Earthâs crust: the Red Sea, the Gulf of Aden and the East African Rift. Nearly...discoveryâalong the axis of the depressionâof some active volcanic ranges displaying magmatic and tectonic features...be attempted. Extensive radiometric dating of volcanic rocks, coupled with tectonic, petrological and...internal Afar was almost entirely floored by recent volcanic rocks (less than four million years old) and that...margin showed that the connection between the Red Sea and the Gulf of Aden spreading axes had to be found |  | | Journal (article/letter/editorial) | | The Terminal Stages of Rifting Preserved in the Northern East African Rift System Tyrone O. Rooney PII:...The Terminal Stages of Rifting Preserved in the Northern East African Rift System, LITHOS(2020), https://doi...The Terminal Stages of Rifting Preserved in the Northern East African Rift System Tyrone O. Rooney Dept...Afar Depression is a broad region of subdued topography wherein the Red Sea, Gulf of re Aden, and East...magmatism during the development of the rift in this region, however the surface distribution of magmatism |  | | Report (chapter) | | ucdavis.edu Mary r. reid Department of Geology Northern Arizona University Flagstaff, Arizona, 86011,...is isotopic dating. The timescales of many sub-volcanic magmatic processes such as magma transport, differentiation...unravel the most recent crystallization history of volcanic minerals. Summary. The net result is that the...efficient growth entrapment, respectively; the region where growth entrapment is possible is shaded....early on that crystallization of minerals in a volcanic rock could pre-date eruption by a significant |  | | Journal (article/letter/editorial) | | of finely ground trondhjemite and Lake County Obsidian (LCO), which was also fused at 1400 °C. The glasses...sample was placed within the assembly so that the center of the capsule would be at the âhot spotâ during...(°C) aTiO2 Taylor Creek rhyolite [13] Taupo[14] Alid volcanics [15] Yellowstone melt incl. [16] Bishop...A-type granophyre and rhyolite from the Alid Volcanic Center, Eritrea, Northeast Africa, J. Petrol. 38 (1997) |  | | Journal (article/letter/editorial) | | carbon dioxide is the second most common gas in volcanic exhalations (White and Waring 1963; Symonds et...corroborated by gas-rich groundwaters, CO2-rich volcanic gases, and the associ- Fig. 3 Solubility plot...basalt compositions from the submarine North Arch volcanic Âźeld, north of Oahu (Hawaii). They argue that...(with CO2/H2O by wt=2.5 in both). The mantle source region was inferred to be ÂŻuid absent, although the host...shallower than their source region. Matrix glass in lavas dredged from the seaÂŻoor at 4 km depth had degassed |  | | Journal (article/letter/editorial) | | b , Roland Mundil a b a Berkeley Geochronology Center Earth and Planetary Science, University of California...Post-Yellowstone caldera rhyolites were sampled from obsidian in the Central Plateau Member (CPM) flows of western...Pre-Long Valley caldera rhyolites were sampled from obsidian that composes the Glass Mountain (GM) domes of...populations exhibited by individual extrusions at young volcanic centers to define the age distribution of modelsimulated...exhibit zircon ages like those measured at young volcanic systems (inset is a stacked histogram, see text) |  | | Journal (article/letter/editorial) | | distributions of magma reservoir bubbles preceding volcanic eruptions. Studies considering bubbles in magmas...(Table 1): high-silica rhyolite obsidian MC78-58 from Panum Obsidian Dome, California (Bailey et al....acid (C2H2O4) along with 90 wt% powdered natural obsidian (40â50 mg) were loaded into 3 mm diameter Au capsules...weeks, and 1, 2, and 4 months. Powdered rhyolite obsidian (275 mg) plus 6 wt% H2O were welded into 4 mm...and bubble number density. Small ââ9ââ designates center of melt pool in 1-day and 2-week images. Note lower |  | | Report (chapter) | | composition of erupted magmas, and crystals in volcanic rocks provide a temporally constrained archive...can have ages spanning most of the history of a volcanic centre. Age populations for accessory phases show...producing the diversity of chemical compositions of volcanic and plutonic rocks, and, by extension, in producing...and therefore have implications for assessing volcanic hazards. There are important feedbacks between...understanding of process. For example, in many volcanic rocks, diverse compositions of both glass (i.e |  | | Journal (article/letter/editorial) | | paths in the upper crust. Keywords Rhyolite · Obsidian · Yellowstone · Experimental petrology · Granophyre...Central Plateau Member Rhyolites in the Yellowstone volcanic field with target flows identified, modified after...evolution of the system. Methods Samples of rhyolitic obsidian or pumice were collected from outcrops of Pitchstone...and clinopyroxene were handpicked from crushed obsidian samples. Compositional analyses Major-element...ÎŒm diameter spot in the matrix glass or near the center of the inclusions, with analytical duration of |  | | Journal (article/letter/editorial) | | Editorial responsibility: T.L. Grove leads to volcanic eruptions. This history is especially important...Yellowstone Plateau volcanic ïŹeld of western Wyomingâeastern Idaho. Since 2.1 Ma, three volcanic cycles have...three large calderas in the Yellowstone Plateau volcanic ïŹeld (Christiansen 1982, 1984b, 2001). Based on... magmas which are, in turn, associated with a volcanic system characterized by secular isotopic and chemical...represent 200 mg of hand picked and pristine obsidian. Analytical and chemical techniques as in WolïŹ |  | | Journal (article/letter/editorial) | | in the eastern part of the Trans re Mexican Volcanic Belt, MĂ©xico. The ACC produced three major explosive...(Pardo and Suarez, 1995) formed the Trans-Mexican Volcanic Belt (TMVB). The TMVB is emplaced on highly heterogeneous...present (e.g., GĂłmez-Tuena et al., 2018). This volcanic arc (Fig. 1) includes some economically viable...km behind the active front of the Sierra Nevada volcanic range (MacĂas et al., 2012), comprises one of...Flores-Ruiz, of 1996). The local basement in the ACC region is a cretaceous limestone exposed to the east and |  | | Book | | MELT INCLUSIONSIN VOLCANIC SYSTEMS Methods, Applications and Problems Photographs on cover (lower...Sciences, Virginia Tech, Blacksburg, Virginia, USA. (center) Vesuvius eruption of 1794. In: P. Gasparini and...Blacksburg, Virginia, USA. MELT INCLUSIONS IN VOLCANIC SYSTEMS Methods, Applicationsand Problems Edited...and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA;...in The Netherlands. Workshop-Short Course on Volcanic Systems - Melt Inclusions: Methods Applications |  | | Book | | MELT INCLUSIONSIN VOLCANIC SYSTEMS Methods, Applications and Problems Photographs on cover (lower...Sciences, Virginia Tech, Blacksburg, Virginia, USA. (center) Vesuvius eruption of 1794. In: P. Gasparini and...Blacksburg, Virginia, USA. MELT INCLUSIONS IN VOLCANIC SYSTEMS Methods, Applicationsand Problems Edited...and make payments through the Copyright Clearance Center, Inc., 222 Rosewood Drive, Danvers, MA 01923, USA;...in The Netherlands. Workshop-Short Course on Volcanic Systems - Melt Inclusions: Methods Applications |  | | Report (issue) | | plutonic environment, as well as inclusions from the volcanic or extrusive environment that have undergone slow...accepted technique to investigate melt evolution in volcanic systems (Clocchiatti 1975, Roedder 1979, Lowenstern...al. 2001, Anderson 2003, Schiano 2003). MI in volcanic rocks are commonly large (>50 ”m), glassy and...minerals, and are generally easy to identify. MI in volcanic rocks generally provide consistent and reasonable...behavior of two crystallized MI in quartz from the Red Mountain, Arizona, USA, porphyry copper deposit during |
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