Results 61 to 70 of about 14,958 (174)

A direct optical method for the study of grain boundary melting

, 2009
The structure and evolution of grain boundaries underlies the nature of polycrystalline materials. Here we describe an experimental apparatus and light reflection technique for measuring disorder at grain boundaries in optically clear material, in ...
E. S. Thomson, J. S. Wettlaufer, Kamb W. B., L. A. Wilen, Mader H. M., Walford M. E. R.   +5 more
core   +1 more source

Coesite Discovery in Eclogites Confirms UHP Metamorphism in the Orlica‐Śnieżnik Dome (SW Poland)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Eclogite lenses are exposed within the orthogneiss‐dominated core of the Orlica‐Śnieżnik Dome in the Sudetes, which forms the northeastern margin of the Bohemian Massif (Variscan Belt of Central Europe). The presence of coesite inclusions in garnet and omphacite confirms that these eclogites underwent ultrahigh‐pressure metamorphism.
Małgorzata Nowak, Lucie Tajčmanová, Marcin Dąbrowski, Iris Buisman, Jacek Szczepański   +4 more
wiley   +1 more source

Earthquakes: from chemical alteration to mechanical rupture

, 1998
In the standard rebound theory of earthquakes, elastic deformation energy is progressively stored in the crust until a threshold is reached at which it is suddenly released in an earthquake.
Abercrombie, Aines, Aki, Aki, Aki, Alekseevskaya, Anderson, Anderson, Andrews, Anooshehpoor, Atkinson, Backus, Backus, Badro, Bailey, Bak, Bambauer, Bardet, Barton, Baumberger, Beeler, Beeler, Beeman, Behrmann, Ben-Zion, Ben-Zion, Beroza, Biarez, Bird, Bird, Blacic, Blanpied, Blanpied, Bocquet, Bolt, Bowden, Bowman, Brace, Brace, Brehm, Brodie, Bruhn, Brune, Bufe, Bufe, Burridge, Burst, Byerlee, Byerlee, Campillo, Carlson, Caroli, Caroli, Chen, Chester, Chester, Chirone, Choy, Cochard, Cochard, Cotton, Cowie, Dahl, David, Dieterich, Dieterich, Dieterich, Dieterich, Dieterich, Dieterich, Dieterich, Dieterich, Dodge, Ellsworth, Ellworth, Etheridge, Evans, Evans, Fisher, Fleischmann, Freiman, Freund, Frischbutter, Frohlich, Frohlich, Gabrielov, Gavrilenko, Geller, Gilbert, Gokhberg, Grasso, Green II, Griggs, Griggs, Gu, Hadizadeh, Harrison, Heaton, Heggie, Heggie, Heggie, Heine, Henyey, Herrmann, Heuze, Hickman, Hickman, Hill, Hobbs, Hobbs, Hobbs, Houston, Ishimaru, Ito, Janecke, Jeffreys, Jensen, Johansen, Jones, Jones, Jordan, Kagan, Kagan, Kanamori, Kanamori, Kanamori, Keilis-Borok, King, King, King, Kirby, Kirby, Klein, Knipe, Knipe, Knopoff, Knopoff, Knopoff, Knopoff, Knopoff, Kronenberg, Kuge, Lachenbruch, Lachenbruch, Lachenbruch, Lachenbruch, Lachenbruch, Langer, Li, Linde, Lindh, Lockner, Lomnitz, Lomnitz-Adler, Lonsdale, Madariaga, Maeda, Main, Massonnet, Massonnet, Melosh, Miltenberger, Mogi, Moore, Mora, Mori, Morrow, Mulargia, Nicolas, Nitsan, Nur, O'Neil, Ogawa, Ouillon, Paquet, Paterson, Paterson, Peacock, Pearson, Pecher, Pietronero, Pinkston, Pisarenko, Poole, Poole, Poole, Poole, Poole, Post, Purton, Ranalli, Rao, Renard, Renard, Rice, Rice, Robert, Rubie, Ruina, Rundle, Russo, Rydelek, Saleur, Salje, Salje, Salje, Sass, Schallamach, Schmittbuhl, Schmittbuhl, Scholz, Scholz, Scholz, Scholz, Scholz, Scholz, Scholz, Sciortino, Scott, Scott, Segall, Shaw, Shaw, Shaw, Shaw, Shen, Shen, Sibson, Sibson, Sibson, Sibson, Silver, Sleep, Smirnov, Smith, Snay, Sokoloff, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Stel, Streit, Sturtevant, Sykes, Tanguy, Tanguy, Tsunogai, Tsunogai, Tsuruoka, Tsutsumi, Tsutsumi, Turcotte, Turner, Van Albada, Van Tiggelen, Varotsos, Vernon, Walcott, Walcott, Walmann, Weber, Westwood, Westwood, Wintsch, Wyss, Wyss, Xu, Zhang, Zhao, Zoback, Zoback, Zoback   +276 more
core   +1 more source

Análisis diagenético de tetrápodos del Triásico Superior, Grupo Puesto Viejo, Argentina [PDF]

, 2016
The Puesto Viejo Group crops out in the San Rafael Block, southwest Mendoza, Argentina. This group is an important unit for the knowledge theTriassic faunas.
de la Fuente, Marcelo Saul, Mancuso, Adriana Cecilia, Previtera, Maria Elena, Sánchez, Eloy S.   +3 more
core   +1 more source

Location, Location, Location: Monazite Behaviour During UHT Metamorphism and Melt Crystallization

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Monazite is a robust mineral for recording the suprasolidus evolution of migmatites and granulites. However, monazite commonly has diverse compositions and yields variable dates in a single sample; understanding the controls on monazite behaviour and composition during partial melting and melt crystallization are not always straightforward ...
Chris Yakymchuk, Jessica Gareau, Michael Williams   +2 more
wiley   +1 more source

Occurrence and distribution of barite in the permo-triassic siksikpuk formation along the Brooks Range haul road [PDF]

, 1980
Barite commonly occurs in Permian to Triassic age rocks along the north flank of the Brooks Range. The Siksikpuk Formation (Wolfcampian to lowest Guadalupian age) is noted for its barite and is well exposed in the vicinity of Galbraith Lake along the ...
Payne, M.W.
core  

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source

An investigation into the controls of granite plutonism in the Sierra da Freita region, Northern Portugal [PDF]

, 2012
The Serra da Freita region of north central Portugal was chosen for study as it displays the complex relationships between regional structure, plutonism, regional and contact metamorphism typical of this part of Iberia.
Reavy, Reginald John
core  

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert, Airaghi, Airaghi, Airaghi, Ansberque, Arne, Beyssac, Billerot, Burchfiel, C. J. Warren, Chen, Cook, D. Deldicque, Deng, Densmore, Deschamps, Dirks, Dubacq, Godard, Guo, Harrison, Harrowfield, Huang, Huang, Hubbard, Hubbard, J. de Sigoyer, Jia, Jiang, Kapp, Kapp, Kirby, L. Airaghi, Lanari, Lanari, Li, Li, Li, Li, Liao, Lichun, Liu, Massonne, Meng, Meng, Michele, Passchier, Robert, Robert, Robert, Roger, Roger, Roger, S. Guillot, SBGMR (Sichuan Bureau of Geology and Mineral Resources), Sigoyer, Sigoyer, Stipp, Tan, Tan, Tian, Vidal, Vidal, Wang, Wang, Wang, Weller, Whitney, Worley, Xu, Xu, Xue, Yan, Zhang, Zhang, Zhang, Zhang, Zheng, Zheng, Zhou, Zhou   +80 more
core   +3 more sources

Sampling the volcanic plumes at Io: Impact speeds and shock conditions

Meteoritics &Planetary Science, EarlyView.
Abstract The desire to sample material from the interior of Io, by flying through its volcanic plumes, requires consideration of the flyby speed and the types of sample collection techniques that can be utilized. Low speed collection (1–2.5 km s−1) would require an orbit around Io itself, which is unlikely due to the accumulated radiation dose that ...
M. J. Burchell, R. C. Ogliore, P. J. Wozniakiewicz   +2 more
wiley   +1 more source