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Arc Magmatism Reading: Winter, Chapter 16 Island Arc Magmatism Activity along arcuate volcanic island chains along subduction zones Distinctly different from the ...
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Subduction zone magmatism
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Archaean magmatism NB- Archean (US spelling) or Archaean (UK spelling) Why? Somehow different from modern magmas Interesting to test our understanding of petrogenetic ...
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either large tholeitic basaltic provinces (CFB = Continental Flood Basalts) ... Snake River-Yellowstone hot spot by Geist and Richards (1993) Geology, 21, 789-792. ...
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either large tholeitic basaltic provinces (CFB = Continental Flood Basalts) ... After Schairer and Bowen (1935) Trans. Amer. Geophys. Union, 16th Ann. ...
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Chapter 17: Continental Arc Magmatism Potential differences with respect to Island Arcs: Thick sialic crust contrasts greatly with mantle-derived partial melts may ...
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Title: Slide 1 Author: Don Francis Last modified by: donf Created Date: 10/11/2005 10:21:21 PM Document presentation format: On-screen Show (4:3) Company
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Magmatism of the Snake River Plain Yellowstone region ...
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... 17: Continental Arc ... of an active continental margin subduction zone, showing ... (including enriched sub-continental lithospheric mantle), crustal ...
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Chapter 19: Continental Alkaline Magmatism Alkaline rocks occur in all tectonic environments, including the ocean basins Conversely, Chapters 12, 15, 17, and 18 have ...
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SUBDUCTION TECTONICS, MAGMATISM AND SURFACE HEAT FLOW IN THE ANDEAN ARC Will Gosnold and Shan de Silva University of North Dakota Department of Space Studies Overview ...
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Prentice Hall. Figure 16-6. c. ... Prentice Hall. Subducted Crust. Dehydration D releases water in mature arcs (lithosphere 25 Ma) ...
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Subduction is responsible for much plutonism, volcanism, metamorphism and orogenesis ... Dominantly subalkaline. Both tholeiitic and calc-alkaline, but overall ...
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Olivine composition changes with oxygen fugacity such that it has an enormous ... from Righter (2003) Metal-silicate partition coefficients are fO2 dependent ...
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SUBDUCTION TECTONICS, MAGMATISM AND SURFACE HEAT FLOW IN THE ANDEAN ARC Will Gosnold and Shan de Silva University of North Dakota Department of Space Studies
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SUBDUCTION TECTONICS, MAGMATISM AND SURFACE HEAT FLOW IN THE ANDEAN ARC Will Gosnold and Shan de Silva Overview HFD data Data treatment Characteristics of each HFD ...
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Acknowledgements: We thank all who sailed with us on RRS Charles Darwin cruise ... UK Natural Environment Research Council, Amerada Hess Ltd and The Royal Society. ...
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THE GEOCHEMICAL EVOLUTION OF GREATER THAN 100 MILLION YEARS ... Calculate the composition and size of residual assemblages created during batholith formation. ...
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... 0.2 Al2O3 12.4 14.4 13.8 17.6 12.5 Fe2O3 2.0 1.0 2.2 1.9 6.6 FeO 7.5 11.9 8.9 5.0 6.5 MgO 17.0 12.4 9.4 6.0 12.0 CaO 10.3 ... high-SiO2 - low FeO*/MgO is ...
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Ages of Rhyolitic Magmatism in the Salton Sea Geothermal Field Determined by Ion Microprobe Dating o
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... (Nash & Hahn, 1986) HYDROTHERMAL - Cretaceous-Tertiary, related to magmatism (Anderson, 1947) Metamorphosed exhalative (Modreski,1985; Nold, 1990) ...
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... accretion of Coast Range Ophiolite Farallon Plate Subduction Begins Voluminous Arc Magmatism Crustal Shortening Emplacement of Mega-Thrust Sheet ...
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... Peridotite Formation of Hydrous Curtains General Characteristics of Arc Magmatism Generation of Arc Basalt Magmas Seismic Tomography Image beneath NE Japan ...
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North of CREST: Evidence of the 410-water-filter ('410-LVL' ... Petrology; 36-5 Ma Post-Laramide magmatism. San Juan Mountains, 39-Mile Volcanic Field ' ...
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How Laramide-Age Hydration of North American Lithosphere by the ... Removal of slab exposes hydrated lithosphere to hot asthenosphere. Widespread magmatism ...
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Moreover, a sub-continental magmatism, with WPT affinity, characterizes some ... West of the plateau, continental fragments (i.e., Chortis) and volcanic arc ...
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... for common tectonic scenarios. P-T-t paths for common tectonic scenarios ... P-T-t paths for common tectonic scenarios. Crustal thickening. Shallow magmatism ...
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Present work: Nature and origin of pulse of intense magmatism of 30 my ... What are sensible time- and space-scales of asthenosphere uprise and. thermal event? ...
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Himalayas from space
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either large tholeitic basaltic provinces (CFB = Continental Flood Basalts) ... CO2 (modified by Freestone and Hamilton, 1980, to incorporate K2O, MgO, FeO, and ...
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Determination of relative ... Tests - Geochemistry ... Geochronology and geochemistry of limited Larmide volcanic rocks. Clasts in Early Tertiary seds. ...
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Late Cenozoic and Quaternary Extension and Volcanism. Late Laramide Effects ... Overthickening of crust during Laramide, gave crust potential energy ...
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Convergence to the west compresses and thickens crust in Arizona. ... Fault angle decreases below surface, faults truncate into regional detachment fault. ...
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merge 'old school' field geology with digital mapping. techniques ... not seen in recent and modern tectonic environments (10 20 km deep) ...
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Layer 2A & B = pillow basalts. Layer 2C = vertical sheeted dikes ... Submarine eruptions and pillows. Sheeted Dyke / Lava Transition ...
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Title: Granites and collisions Author: Information Technology Last modified by: Information Technology Created Date: 4/6/2006 1:53:40 PM Document presentation format
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Mountain Building or Orogeny involves rock deformation and burial which includes: ... Batholith- large irregularly shaped igneous intrusion ...
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Prsentation PowerPoint
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AFM diagram distinguishing tholeiitic and calc-alkaline series. ... Activity along arcuate volcanic island chains along subduction zones ...
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Earthquakes extend to 600 km beneath Lau Basin. Note that tomographic image slab appears to terminate at 660 km ... Island Arc Petrogenesis. Figure 16-11b. ...
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E.R. Lundin & A.G. Dor . NGU. Geological Survey of Norway. Layout. Atlantic volcanic margins ... From Lundin & Dor , in press. Some Arctic - NE Atlantic comparisons ...
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Title: Chapter 18: Granitoid Rocks Author: John D Winter Last modified by: John Winter Created Date: 1/27/1997 12:16:50 AM Document presentation format
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... tool that helps constrain physical properties -400. 400 km -450 -500 ... We need: more physical properties & heat flow data; indicators of thermal state ...
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2. Blue Ridge- Precambrian and Cambrian metamorphosed ... Gneiss and granite. Metamorphosed basalt. More intense deformation at Great Smoky than Shenandoah ...
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GEOS 112 Lecture Topics 22003
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Title: Granites and collisions Author: Information Technology Last modified by: Information Technology Created Date: 4/6/2006 1:53:40 PM Document presentation format
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will start to melt before reaching same T as surrounding mantle ... Eclogite melts in the mantle react with peridotite to form pyroxenite ...
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Temperature Measurements, Thermal Gradients and Heat Flow in Geothermal Exploration
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Hot upwellings of relatively primordial material which rise from ... De Paolo and Manga, Science, 2003. P-wave velocities under Hawaii: red=slow, blue=fast. ...
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... to and Controlling the Spatial and Temporal Patterns of Strain ... Was strain localization in the Walker lane triggered by removal of a lithospheric keel? ...
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The Formation of Intermediate (and Basic) Magmas at Destructive / Convergent ... and solidify as a plutonic batholith there is little volcanic activity but ...
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Mesozoic North Sea alkaline volcanism and the upside-down dripping tap hypothesis Mark C. Beaumont, J. G. Fitton, J. R. Underhill, J. E. Dixon School of GeoSciences ...
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On The Significance Of Tectonic Underplating Beneath Continental Margins
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CHRONOLOGY AND COMPOSITION OF VOLCANICLASTIC ASH LAYERS IN THE CENTRAL TYRRHENIAN BASIN (SITE 974)1 Paul van den Bogaard,2 Beate Mocek,2 and Marianne Stavesand2
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... Ophiolite Obduction Oceanic Crust and Upper Mantle Structure Typical Ophiolite Layer 1 A thin layer of pelagic sediment Pillow lavas in the Semail ...
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