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| columns of DSDP Sites after Initial Reports of the Deep Sea Drilling Project. Note: Leg 79 Sites 544-547...sediment cover the birth and evolution of the Atlantic Ocean Basins during the past 200 million years. Due...multichannel seismic reflection lines, numerous Deep Sea Drilling Project (DSDP) sites and petroleum...During the late 1970's, the International Phase of Ocean Drilling (IPOD), including its pre- and post-site...the offshore petroleum potential of the North Atlantic continental margins helped also to stimulate new |
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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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| 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 |
 | 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...microdiamond in zircon, kyanite, and garnet from gneiss 2. Rutile with α-PbO2 structure 1. Protoliths are oceanic |
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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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| 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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| 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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| 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...the centre, northeast of the Kishtwar window, a zone with huge gneiss domes with a concordant sedimentary |
 | 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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| 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 ____________________...Evidence for two stages of deformation in the western Sierra Nevada metamorphic belt, California, by Lorin D |
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| scattered relics of broken garnet and clinopyroxene. The zone that follows inwards consists of equal amounts of...barroisitic amphibole, grading outwards to actinolite. Rutile is rimmed concentrically by ilmenite and titanite...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 |
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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 .. ................... .. .... . ........ . . |
 | | Book |
| . . . . 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 |
 | Reimold, Wolf U., Koeberl, Christian, Wright, Cedric, McDonald, Iain (2001) Comment on “Origin of a late Eocene to pre-Miocene buried crater and breccia lens at Fohn-1, North Bonaparte Basin, Timor Sea: A probable extraterrestrial connection” by J. D. Gorter and A. Y. Glikson. Meteoritics & Planetary Science, 36 (5) 747-749 doi:10.1111/j.1945-5100.2001.tb01911.x | Journal (article/letter/editorial) |
| The major disturbances in the areas of the alleged rim and central uplift structures of Fohn-1 that appear...affect the overlying strata including the northeastern rim area, where disturbance seems to extend to...have been discussed. Imagine crossing the so-called rim of the disturbed structure in Gorter and Glikson's...of the glassy component in the carbonate breccia zone. We feel, however, that the first step has to be...microfossils in the drill chips, which suggested deep excavation; (3) lack of seismic evidence for volcanic |
 | | Report (issue) |
| INIS Clearinghouse. FOREWORD Since about the mid seventies, the International Atomic Energy Agency...the year 2000 and implies that somewhere in the mid-nineties additional production will be needed, which...Complete control of the Rabbit Lake mine/mill complex was purchased by Eldorado Mines, Ltd., a Crown...exploration in Canada (Table 1). In the early to mid-1960s, concerns were expressed that as nuclear power...GROUPS EXPLORING FOR URANIUM IN CANADA During the mid-to-late 1970s, uranium exploration in Canada was |
 | 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) |
 | Stark, J. T., Johnson, J. H., Behre, C. H. Jr., Powers, W. E., Howland, A. L., Gould, Don B. (1949, January) Geology and Origin of South Park, Colorado. GSA Memoir 33. Geological Society of America doi:10.1130/mem33 | Report (issue) |
| ... . . .......... . ...... . .... . 95 Basin Ridge group ... ... .. ... ... ... . ............... ...... ....... . . . . . ... . . . .. . . . Basin Ridge syncline .. . . . .. ...... ... . ... . . . . ......... . .. . .. . . . ... . .. . ... . Mexican Ridge anticline ............. . ............ . . . . ... . . . . . . . . . . . . . . . . . . . . Basin Ridge volcanic rocks. . .. . . . . . . . . . . . . . ...boulders on surface and in loose soil of Mexican Ridge. . . . . . . . . . . . . . . . . . . . . . . 117 |
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| gem-quality zincite crystals, displaying a magnificent deep red colour have been cut. One example weighing 20...closest to the diaphragm display small needles of complex morphology (Figure 3a). The more distant zones...(reductive environment) Secondary zincite crystals form complex groups, commonly on relict primary zincites, and...with diverse pyramidal terminations (Figure 7). Complex pyramidal crystals showing pronounced hemimorphism...brown. Their colour intensity varies from pale to deep and saturated. Colour distribution in the larger |
 | | Report (issue) |
| 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 |
 | | Report (issue) |
| Society of America Memoir 80 STILLWATER IGNEOUS COMPLEX, MONTANA A QUANTITATIVE MINERALOGICAL STUDY H...Edward Sampson began the study of the Stillwater complex, Montana, in 1930. The writer commenced a detailed...detailed study of the mineralogy of the complex in 1935 after several periods in the field in preceding years...Peoples would write the general geology of the complex, Howland the floor rocks and sulfide deposits,...have published a number of short papers on the complex. (Peoples, 1933; 1936; Howland, Peoples, and Sampson |
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| near vicinity (⬃1 km) of the Carthage-Colton suture zone that separates the Lowlands from the Adirondack...displacement of the two terranes along the Carthage-Colton zone at ca. 1050 Ma. Peak metamorphism conditions in...temperatures were reached near the Carthage-Colton zone (760°C; Liogys and Jenkins, 2000), and in the southeastern...at ca. 1045 to 893 Ma within the Bancroft shear zone that separates the Bancroft from the adjacent Elzevir...from a pegmatite located ca. 5 km east of the northeastern rim of the Harney Peak granite contact at the |
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| only the more stable species: zircon, tourmaline, rutile, ilmenite, magnatite, and leucoxene. Authigenic...of the Sangamon arch in western Illinois and northeastern Missouri, the Cedar Valley Formation is the...the Miami Bend and the Logansdoes not specify fracture fillings which are port Limestones, separated...equivalent Bass Island beds mity. Each has an arenaceous zone at the base. The southeastern part of the Michigan...Basin to the Chattanooga Shale. Along the northeastern rim of the dome, a sandstone is present at the |
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| matter, but their relationships remain still very complex. References: [l]Flynn G.J. (1989)Icams, 77, 287-310...the degree of melting was insufficient for magma ocean development, thereby avoiding global isotopic homogenization...approximately 2 . 5 as chondrites [l]. All other factors (fracture density, exposure history, initial mass, etc.)...[2-41 as well as in a piece of KfT bolide found in ocean sediments [5]. In light of the fact that E chondrites...much of the ll comes from the Si/ S/Ar zone or/and the Ni zone (see [2] for a definition of type I1 SN |
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| melt was formed by shock fusion of a basement complex, consisting of about 80% biotite granite and 20%...multi-colored breccia is exposed, the chilled bottom zone is about f m thick. The boundary between vitreous...microscopic size are equally vitreous in the chilled zone and devitrified in the interior of the mass. In...layers have survived erosion even the upper chilled zone has been observed (Zipplingen, Otting). The thickness...glass with brown rim. Vitreous bomb fl'om Grossohrheim (138) Fig. 5. Brown colored zone, rich in mineral |
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| Chicago & Northwestern, the Duluth, South Shore & Atlantic, and the Lake Superior & Ishpeming. The Northwestern...chert. Little slaty material is found within it. A zone of from 50 to 100 ft. on top of the Siamo slate...planes are the loci of the orebodies along this rim of the basin, and along them are situated the orebodies...the dike with the footwall, but in a brecciated zone between the slate footwall and the dike. The ore...JR. 13 pitch of all orebodies along the north rim of the basin results from the northwest dip of the |
