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    Academic Journals

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• 40Ar/39Ar dating into the historical realm: calibration against Pliny the Younger

  Authors:P.R. Renne and W.D. SharpFrom:Science (Vol. 277, Issue 5330) Peer-Reviewed

  Aug. 29, 19972,137 words Article Laser incremental heating of sanidine from the pumice deposited by the Plinian eruption of Vesuvius in 79 A.D. yielded a [sup.40.Ar]/[sup.39.Ar] isochron age of 1925 [+ or -] 94 years ago. Close agreement with the...

• A low-cost device for measuring local magnetic anomalies in volcanic terrain

  Authors:Bertwin M. de Groot and Lennart V. de GrootFrom:Geoscientific Instrumentation, Methods and Data Systems (Vol. 8, Issue 2) Peer-Reviewed

  Aug. 22, 2019217 words Author abstract, Bri...

  Reconstructions of the past behavior of the geomagnetic field critically depend on the magnetic signal stored in extrusive igneous rocks. These rocks record the Earth's magnetic field when they cool and retain this...

• Formation and evolution of a proterozoic magmatic arc: geochemical and geochronological constraints from meta-igneous rocks of the ongole domain, eastern Ghats Belt, India

  Authors:Tapabrato Sarkar, Volker Schenk, and Jasper BerndtFrom:Contributions to Mineralogy and Petrology (Vol. 169, Issue 1) Peer-Reviewed

  Jan. 201510,359 words Article 1430LGeochemical data and U-Pb zircon results are presented for the intrusive meta-igneous rocks of the Ongole domain, a granulite-facies terrain of the Eastern Ghats Belt in India, with the aim of inferring the tectonic...

• Evolution of polygonal fracture patterns in lava flows

  Authors:Atilla Aydin and James M. DeGraffFrom:Science (Vol. 239, Issue 4839) Peer-Reviewed

  Jan. 29, 19882,531 words Article Evolution of Polygonal Fracture Patterns in Lava Flows MANY VOLCANIC ROCKS, ESPECIALLY BASALTIC LAVA flows, are divided by fractures into slender prismatic columns (Fig. 1a). In plan view, these column-bounding...

• Field relations, geochemistry, and age of Paleoproterozoic igneous rocks in the Northeastern Kaipokok Bay area, Makkovik Province, Labrador

  Authors:Sandra M. Barr, Chris E. White, and John W.F. KetchumFrom:Atlantic Geology (Vol. 43) Peer-Reviewed

  Annual 20078,335 words Report 1510LABSTRACT The northeastern part of Kaipokok Bay is located in the Makkovik Province of Labrador, in the boundary zone between the Kaipokok and Aillik domains. The Kaipokok domain is characterized by reworked Archean...

• Evidence for a heterogeneous upper mantle in the Cabo Ortegal Complex, Spain

  Authors:Jacques Girardeau, Jose Ignaki Gil Ibarguchi, and Nejib Ben JamaaFrom:Science (Vol. 245, Issue 4923) Peer-Reviewed

  Sept. 15, 19892,344 words Article Evidence for a Heterogeneous Upper Mantle in the Cabo Ortegal Complex, Spain STUDIES OF ULTRAMAFIC INCLUSIONS in lavas and of ultramafic rocks in orogenic massifs have shown that pyroxenites [1] are an important...

• Spatial variability in hydrologic properties of a volcanic tuff

  Authors:J.D. Istok, C.A. Rautman, L.E. Flint, and A.L. FlintFrom:Ground Water (Vol. 32, Issue 5) Peer-Reviewed

  September-October 19945,355 words Article Spatial variability of hydrologic properties was quantified for a nonwelded-to-welded ash flow tuff at Yucca Mountain, Nevada, the potential site of a high-level, nuclear waste repository. Bulk density, porosity,...

• Architecture of the Canadian portion of the high arctic large igneous province and implications for magmatic Ni-Cu potential

  Authors:B.M. Saumur, K. Dewing, and M.-c. WilliamsonFrom:Canadian Journal of Earth Sciences (Vol. 53, Issue 5) Peer-Reviewed

  May 20169,818 words Report 1460LThe Cretaceous to Paleogene High Arctic Large Igneous Province (HALIP) occurs in circum-Arctic regions, and the largest portion of the province occurs in Canada's Arctic Archipelago. This paper reviews and documents the...

• Intrusion and contamination of high-temperature dunitic magma: the Nordre Bumandsfjord pluton, Seiland, Arctic Norway

  Authors:W.L. Griffin, B.A. Sturt, C.J. O'Neill, C.L. Kirkland, and Suzanne Y. O'ReillyFrom:Contributions to Mineralogy and Petrology (Vol. 165, Issue 5) Peer-Reviewed

  May 201314,049 words Article 1360LThe Caledonian Nappe Complex of Arctic Norway provides rare insights into the interaction between mafic-ultramafic magmas and the deep continental crust. The Kalak Nappe Complex contains >25,000 [km.sup.3] of mafic...

• Insights into collisional magmatism from isotopic fingerprints of melting reactions. (Reports)

  Authors:Kurt M. Knesel and Jon P. DavidsonFrom:Science (Vol. 296, Issue 5576) Peer-Reviewed

  June 21, 20022,547 words Article Piston-cylinder experiments in the granite system demonstrate that a variety of isotopically distinct melts can arise from progressive melting of a single source. The relation between the isotopic composition of Sr and...

• Igneous differentiation by deformation.

  Authors:N. Petford, M. A. Koenders, and J. D. ClemensFrom:Contributions to Mineralogy and Petrology (Vol. 175, Issue 5) Peer-Reviewed

  Apr. 20, 202013,827 words Article 1600LIn a paper published in 1920, Bowen conceived of a situation where forces acting on a crystalline mesh could extract the liquid phase from the solid, and in doing so cause variations in chemistry distinct from the purely...

• Corrected Late Triassic latitudes for continents adjacent to the North Atlantic

  Authors:Dennis V. Kent and Lisa TauxeFrom:Science (Vol. 307, Issue 5707) Peer-Reviewed

  Jan. 14, 20052,838 words Article 1710LWe use a method based on a statistical geomagnetic field model to recognize and correct for inclination error in sedimentary rocks from early Mesozoic rift basins in North America, Greenland, and Europe. The congruence...

• Mesosiderite clasts with the most extreme positive europium anomalies among solar system rocks

  Authors:David W. Mittlefehldt, Alan E. Rubin, and Andrew M. DavisFrom:Science (Vol. 257, Issue 5073) Peer-Reviewed

  Aug. 21, 19923,124 words Article Pigeonite-plagioclase gabbros that occur as clasts in mesosiderites (brecciated stony-iron meteorites) show extreme fractionations of the rare-earth elements (REEs) with larger positive europium anomalies than any...

• A two-dimensional model of the passive coastal margin deep sedimentary carbon and methane cycles

  Authors:D. E. Archer, B. A. Buffett, and P. C. McGuireFrom:Biogeosciences (Vol. 9, Issue 8) Peer-Reviewed

  Aug. 1, 201230 words Brief article Byline: D. E. Archer, B. A. Buffett, P. C. McGuire To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link:...

• Activities and volatilities of trace components in silicate melts: a novel use of metal-silicate partitioning data

  Authors:Bernard J. Wood and Jon WadeFrom:Contributions to Mineralogy and Petrology (Vol. 166, Issue 3) Peer-Reviewed

  Sept. 20136,812 words Article 1560LIan Carmichael spent 45 years thinking about and working on the activities of components in silicate melts and their use to estimate physicochemical conditions at eruption and in the source regions of igneous rocks....

• Linking phosphorus sorption and magnetic susceptibility in clays and tropical soils.

  Authors:C.C. Poggere, V. Barron, A.V. Inda, J.Z. Barbosa, A.D.B. Brito, and N. CuriFrom:Soil Research (Vol. 58, Issue 5) Peer-Reviewed

  Aug. 20207,583 words Report 1450LMaghemite (Mh) and magnetic susceptibility have been little studied in relation to phosphorus (P) sorption, despite the fact that tropical soils--particularly those derived from mafic rocks--may contain substantial...

• Geochemical evaluation of mineralization and igneous activity in the vicinity of the Elmtree deposit, northeastern New Brunswick, Canada.

  Authors:Aaron L. Bustard, David R. Lentz, and James A. WalkerFrom:Atlantic Geology (Vol. 57) Peer-Reviewed

  Annual 2021445 words Article 1560LThe Elmtree deposit is situated approximately 5 km west of Petit Rocher and hosts a resource of over 300 000 ounces of gold and subordinate polymetallic (Ag, Zn, Pb, Sb) mineralization in three zones: West Gabbro, South...

• Pulverized volcanic rock provides catalysts for nanotubes

  From:Advanced Materials & Processes (Vol. 165, Issue 4) Peer-Reviewed

  Apr. 2007150 words Brief article 1220LIgneous rock from Mount Etna has been pulverized to act as a catalyst to produce carbon nanotubes and fibers directly by deposition from the gas phase by researchers from the Fritz Haber Institute in Berlin, Germany....

• Support for cool early earth

  Author:Katie L. BurkeFrom:American Scientist (Vol. 105, Issue 4)

  July-August 2017110 words Brief article 1120LAnalysis of the mineral grains from the oldest rocks indicates that 4.4 billion years ago, land on Earth was flat and almost entirely covered with water. The research indicates that zircon mineral grains from Australia...

• Predicting iron staining of siderite-bearing microsyenites intended for dimension stone use

  Authors:G.W. Quick and V. SirivivatnanonFrom:Construction and Building Materials (Vol. 22, Issue 3) Peer-Reviewed

  Mar. 20083,885 words Article 1510LAbstract This paper reports on the investigation into the performance of a microsyenite rock containing siderite, as a secondary mineral phase, from the disused Mt Gibraltar quarry in the Bowral district, 100 km...