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| and W. R. Bryant 13. Seismic stratigraphy of the deep Gulf of Mexico basin and adjacent margins . . ....orogenic belts rimming the Gulf of Mexico basin—the Sierra Madre Oriental in Mexico, the Ouachita orogenic...industrial organizations. To all of them I express my deep gratitude. The Bureau of Economic Geology of the...Columbus discovered the New World, most of the Atlantic coasts of both North and South America had been... Vasco Nunez de Balboa had reached the Pacific Ocean by crossing the isthmus of Panama, but the search |
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| beils \ Caledonian c=:J Vounger eonr Arehean mID r~~~:li~~'UkOSk i c=:J c=:J EJ Granu lil e be...of Finland, Bulletin 305 dissemination or as fracture filling in the brec ciated host rock. According...northern margin of the Lake Ladoga- Gulf of Bothnia zone and north-south aligned fractures. The deposit is...followed by syenite that intruded in the marginal zone and in the surrounding bedrock. The main constituents...ore deposits are located in a rather restricted zone extending in a W direction from Lake Ladoga (Mikkola |
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| Europe, the Jurassic of the much larger Pacific rim has been studied intensively only in the past few...zonal names. Scientific interchange between Pacific-rim countries often remained minimal, and the creation..."final" breakup of Pangea. The history of the Pacific Ocean (with its ancestor, Panthalassa) and the motions...to the Jurassic, which formed the oldest extant ocean floor. Palinspastic reconstructions by geophysicists...required for the Jurassic paleogeography of the Pacific rim, because most of the current continental margins |
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| and industrial minerals 28. Concentrations of "ilmenite" in the Miocene and post-Miocene formations near...correlative strata in Montana, western Wyoming, and northeastern Utah, by William J. Sando _________________...Cretaceous strand lines in northwestern Colorado and northeastern Utah, by A. D. Zapp and W. A. Cobban_ 113. Strn...___________________ _ 114. Salt anticlines and deep-seated structures in the Paradox basin, Colorado...141. The Republic graben, a major structure in northeastern VVashington, by Mortimer H. Staatz ____________________ |
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| Lava fountains near Aloi Crater, on the east rift zone of Kilauea volcano, in May 1969. Photo by U.S. Department...Stream Erosion 161 Mass Transfer 185 Work of the Ocean 195 Sedimentary Rocks 219 Work of the Wind 225 Work...of the Hawaiian Islands and other islands of the mid-Pacific have beckoned the traveler and charmed the...Introduction ACROSS THE FACE OF THE CENTRAL PACIFIC OCEAN, 2,000 miles from the nearest continent and 500...of a great mountain rising from the floor of the ocean. The islands in the northwestern part of the |
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| investigations_ Marine and coastal geology ------------------Atlantic continental margin --------------Shelf geophysical...Estuarine and co·astal hydrology --------------Atlantic coast ---------------------------Gulf coast -...________________ Department of Defense DSDP _____________ Deep Sea Drilling Project dyn _______ ------- _____ -----...joule JOIDES ____ Joint Oceanographic Institutions Deep Earth Sampling JTU ________________ Jackson turbidity...side-looking airborne radar SMOW __________ standard mean ocean water TAPS _________ trans-Alaska pipeline system |
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| B and G11B signatures in the shallow subduction zone forearc: Examples from Barbados, Costa Rica and...USA – (dsaffer@geosc.psu.edu) 2 Research Center Ocean Margins, Univ. Bremen, P.O.Box 330440, 28334 Bremen...boreholes and mud volcanoes indicate a contribution from deep sources. These observations include pore water freshening...one critical step toward characterizing subduction zone fluid transport. Here, we present a simple model...mudstones in subduction zones. In a generic subduction zone with a taper angle of 8º, we evaluate two end-member |
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| A. 1., Morozov S. A. The Kammenoozero structural zone . . ...... . .. . . . ....... ... ..... ... The...of the granite gneiss complex of eastern Finland .. ... . The granulite complex and associated formations..... Layered intrusions in the Archean basement complex ............... ... Nickel deposits associated............... . ... ... . . ... . ... . . . .... Deep structures as revealed on lhe gravimetric map .... ......... .. .............. . The ultramafic complex .. ................... .. .... . ........ . . |
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| relations are found along the profile through the northeastern Carpathians, where there is a positive anomaly...anomaly in the region of Munkacs and the zone of depression in Podolia. The conditions in the Carpathians...anomalies then reveal the broad features of the deep structure prolongation of the Hercynian arcs and...potential between the Mediterranean and the Atlantic Ocean]: Acad. Sci. Paris Comptes Rendus, tome 240...one on the Mediterranean and the other on the Atlantic, to determine the differ- GRAVITY 145 ence |
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| significantrock exposures are high in the crater rim. In most cases these exposed rocks proved entirely...kilobars. Both specimens are probably foreign to the rim environment and may represent remnants of ejecta...neither is there any evidence of such an origin in the rim rock exposures. An impact origin for the crater is...found by a further search for "exotic" rocks in the rim. INTRODUCTION The crater of Roter Kamm is situated...looks meteoritic, with its relatively low, narrow rim, broad floor and almost perfect circularity, Fig |
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| between the rocky body of New England and the open Atlantic. Written plainly along the margins of these fragile...never-ending work of the sea, you can see in action the complex and interwoven processes of land and sea, climate...Tertiary Swamps The Vineyard’s Greensand New England’s Mid-Tertiary Life and Climate Nantucket’s Middle Tertiary...Sandwich Moraine The Sandwich Moraine from the Mid-Cape Highway 113 The Sandwich Moraine from the...CHAPTER The X: SALT UPON Sea-Salt Industry Other Ocean xix SALT 201 202 204 Products CHAPTER XI: THESE |
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| between the rocky body of New England and the open Atlantic. Written plainly along the margins of these fragile...never-ending work of the sea, you can see in action the complex and interwoven processes of land and sea, climate...arise in the minds of those who stand beside the Mid- Cape Highway on Shoot Flying Hill and view the...Tertiary Swamps The Vineyard’s Greensand New England's Mid-Tertiary Life and Climate Nantucket’s Middle Tertiary...Cod’s Sandwich Moraine The Sandwich Moraine from the Mid-Cape Highway The Sandwich Moraine from the Old Kings |
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| immediately surrounding monogenetic scoria cones of the Sierra Chichinautzin Volcanic Field, central Mexico. Magma...pschaaf@geofisica.unam.mx KEY WORDS: Popocatépetl; Sierra Chichinautzin Volcanic Field; arc petrogenesis;...of an 80 km long, north–south-trending highland (Sierra Nevada) that includes Iztaccı́huatl volcano (5272...East Pacific Rise; OFZ, Orozco Fracture Zone; OGFZ, O’Gorman Fracture Zone. The numbers along the Middle...& Suárez, 1995). Volcanoes (triangles): SCVF, Sierra Chichinautzin Volcanic Field; NT, Nevado de Toluca; |
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| 4. Ground tilting at seismograph stations on the rim of Kilauea caldera during 1952____________________________________...more than 4,000 earthquakes originated beneath the ocean a few miles south of the island of Hawaii. Their...earthquakes commenced at foci along the east rift zone and beneath the caldera region of Kilauea volcano...fountain more than 800 feet high overtopped the rim of the crater at the beginning of the eruption. Gradually...part of the fissure. By 04h on June 28 only the northeastern quarter of the fissure was active, but at about |
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| the garnets reveal double-stage growth with a complex zoning pattern due to reaction-partitioning during...metapelites along a cross-section through the M n zone and the Higher Himalaya imply distinct readjustments...varying amounts everywhere along the MCT zone. This thrust zone (including the slightly north-northeast...garnetpairs, kyanite-garnet-plagioclase-quartz rutile-ilmenite-Al~i05-quartz assemblages along a section perpendicular...the centre, northeast of the Kishtwar window, a zone with huge gneiss domes with a concordant sedimentary |
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| 2014 Abstract The Triassic Dabie-Sulu collision zone along with recently identified ultrahigh-pressure...Pacific-type subduction of a Paleozoic South Tianshan ocean, and was exhumed to higher crustal levels during...that experienced mantle metasomatism and subduction-zone UHP metamorphism. P-T estimates for eclogites and...regional scale, the mechanism and rate at which such deep-seated rocks returned to the surface from mantle...Pacific-type subduction of a Paleozoic South Tianshan ocean at about 345 Ma, and were exhumed to higher crustal |
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| taken through a red filter. The view shows the northeastern portion of Valles Marineris and adjacent plana...arithmetic, but the latitude conversion is more complex. The nomenclature maps at the USGS Gazetteer of...daytime image of the larger interior crater and a fracture of the Sirenum Fossae (image I34775002, pixel...University). (d) and (e) Two views of the north rim of the smaller of the two interior craters (d: MOC-NA...3 Noctis Labyrinthus, a system of intersecting fracture valleys (at 5.25 S, 255 E) near the center of |
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| scattered relics of broken garnet and clinopyroxene. The zone that follows inwards consists of equal amounts of...actinolite. Rutile is rimmed concentrically by ilmenite and titanite. Other minerals are epidote, actinolite...actinolite, albite and quartz. The central, discontinuous zone mostly preserves the eclogite assemblage with rational...there is a smooth depletion pattern from core to rim for Fe:O 3 tot and Na20 , and an enrichment pattern...Statement of the problem The Voltri Group ophiolitic complex contains several "classical" rodingites characA |
 | Dill, H. G., Skoda, R., Weber, B., Berner, Z. A., Muller, A., Bakker, R. J. (2012) A Newly Discovered Swarm of Shear-Zone-Hosted Bi-As-Fe-Mg-P-Rich Aplites and Pegmatites in the Hagendorf-Pleystein Pegmatite Province, Southeastern Germany: A Step Closer to the Metamorphic Root of Pegmatites. The Canadian Mineralogist, 50 (4) 943-974 doi:10.3749/canmin.50.4.943 | Journal (article/letter/editorial) |
| 3749/canmin.50.4.943 A NEWLY DISCOVERED SWARM OF SHEAR-ZONE-HOSTED Bi–As–Fe–Mg–P-RICH APLITES AND PEGMATITES...deepest parts of the pegmatite, close to its root zone, and on the other, within the uppermost parts of...pegmatites (i.e., not exposed). Keywords: shear zone, pegmatite–aplite swarm, phosphate, sulfide, arsenide...sandwich-like within metamorphic country-rocks along a shear zone, addresses four pivotal questions. 1. How is the...pegmatite province, embarking on a comparison with shear-zone related mineralization in general at the western |
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| . . . . 1.2 Northern Grauwackenzone (Greywacke Zone), Land Salzburg 1.3 Hohe Tauern, Land Salzburg ... . . . . . . . . . 4.1.1 Ilimaussaq Intrusive Complex, Kvanefjeld . . 4.1.2 Puissagtaq Area, Igaliko.... . . . . . . . 6.4.1 Saint-Hippolyte Area, Northeastern Vosges, Dpt. Haut-Rhin . . . . . . 6.4.2 Pegmatitic...Sedimentary Basins in Saxony . . . . 7.3.1 Elbtal Zone. . . . . . . . . . . . . . . . 7.4 Northwest Saxony...West Carpathians . . . . . . 14.1.1 North Gemer Zone . . . . . . . . . . . . . . . . . . . . 14.1.2 Central |
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| collected at Shorty Crater. (3) Orange soil on the rim of Shorty Crater with the gnomon in the background...coverage, and its glorious splashdown in the Pacific Ocean surely marked Apollo 17 as the mission most impressively...detailed analysis of the Apollo 15 imagery. The rim of the Serenitatis basin in the Taurus-Littrow region...billion years ago or earlier. In comparison, the ocean basins of the Earth are younger than 300 million...to place num concentrations constraints on the deep lunar interior temperatures, the terra or highland |
 | Liou, J. G., Tsujimori, T., Zhang, R. Y., Katayama, I., Maruyama, S. (2004) Global UHP Metamorphism and Continental Subduction/Collision: The Himalayan Model. International Geology Review, 46 (1) 1-27 doi:10.2747/0020-6814.46.1.1 | Journal (article/letter/editorial) |
| contributions to the studies of both HP and UHP subduction-zone metamorphism and tectonics. We emphasize the interactions...continental crust. Eclogites with compositions of mid-oceanic ridge basalt (MORB) + H2O have been experimentally...consist of rock assemblages forming an accretionary complex, including bedded cherts, MORB-origin greenstones...lithosphere and development of an accretionary complex, forearc basin, huge tonalite-trondhjeimite-granitoid...Northeast Greenland Southeast Brazil Chuacus Complex, northern Guatemala Rhodope Massif, Greece Lanterman |
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| original textures are well preserved. The Bushveld Complex and the associated Rooiberg Group lava flows are...Group preceded the emplacement of the Bushveld Complex in the northern part of the craton. The Bushveld...1997), the mafic-layered rocks of the Bushveld Complex per se (the Rustenberg Layered Suite; 2058.9 ±...attributed the Rooiberg Group and the Bushveld Complex to the simultaneous impact of several comets or...the Rooiberg Group and the associated Bushveld Complex to partial melting of subcontinental lithosphere |
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| appropriated for electrical power production in the mid 1930s. Back: (Top) Lizard Butte near Marsing, an...magmatic, structural, and tectonic evolution of this complex geologic system. We have organized the book into...midpoint of the 1,100-km-long NevadaOregon rift zone. Strontium isotopic variations reflect crustal and...lithosphere variations along the trend of this rift zone, with the basalt area of Oregon and Washington lying...generated by the interaction of a relatively fixed deep thermal plume with a moving lithospheric plate. |
 | Groulier, Pierre-Arthur, Indares, Aphrodite, Dunning, Gregory, Moukhsil, Abdelali, Jenner, George (2018) Syn-orogenic magmatism over 100 m.y. in high crustal levels of the central Grenville Province: Characteristics, age and tectonic significance. Lithos, 312. 128-152 doi:10.1016/j.lithos.2018.04.025 | Journal (article/letter/editorial) |
| juxtaposition of the low-P Belt with the high-T mid-P Belt in the hinterland of the Grenville Province...Rivers et al., 1989) is an US assembly of high-P to mid-P (dominant) granulite facies rock units that were...Krogh, 2002) in the central and southern part of the mid-P hinterland, also referred to as T the thermal...are particularly US abundant and diverse in the mid-P hinterland of the central Grenville (Owens and...environment. These are correlated with the Cap-à-l’Est complex defined farther north by Hébert and Lacoste (1998) |
