 | e Silva, Jonas Mota, Ferreira Filho, Cesar Fonseca, Bühn, Bernhard, Dantas, Elton Luiz (2011) Geology, petrology and geochemistry of the “Americano do Brasil” layered intrusion, central Brazil, and its Ni–Cu sulfide deposits. Mineralium Deposita, 46 (1) 57-90 doi:10.1007/s00126-010-0312-9 | Journal (article/letter/editorial) | | and geochemistry of the “Americano do Brasil” layered intrusion, central Brazil, and its Ni–Cu sulfide...Springer-Verlag 2010 Abstract The “Americano do Brasil” Complex (ABC) is part of a cluster of coeval...during the Brasiliano/Pan-African Orogenic Cycle in Brazil. The medium-sized ABC consists of interlayered...of olivine (up to Fo88) and the crystallization sequence of the ABC (Ol+Chr≥Ol+Opx+ Chr ≥ Cpx + Opx ≥ Opx...websterite and gabbronorite in the more fractionated sequence of the ABC, is a cluster of several Editorial |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit (1927)...‘Brazilian system’ defined by Alcide d’Orbigny in Brazil (Beaumont 1844), arguably corresponding to the...first to correlate the Damara and Gariep belts of southern Africa with the Ribeira Belt of South America...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart |  | | Book | | complexities, and was happy to learn that platinum–palladium do exist at Sukinda–Nausahi Belt. However, what I saw...wild animals and a few tribal villages. I used to do geological studies in the forest from early morning...tpa/d SIC SUC USGS/USBM Bushveld Igneous Complex Complex Department of Mines and Geology Department...annum/day Sudbury/Stillwater Igneous Complex Sukinda Ultramafic Complex United States Geological Survey/...significant in Canada, United States, Australia, Africa, Brazil, New Caledonia, Philippines, Indonesia, and the |  | | Report (issue) | | regional fault in east-central Massachusetts and southern New Hampshire, by Robert F. Novotny_____________...site on the Mullica River in the Wharton Tract, southern New Jersey, by S. M. Lang _____ ----- _______..._________ 318. Correlation of end moraines in southern Rhode Island, by J. P. Schafer_ ______________________...____________ 319. Residual sea water in the basement complex of the Fall Zone in the vicinity ·of Fredericksburg...Artesian water in the Spiritwood buried valley complex, North Dakota, by C. J. Huxel, Jr_ _____ ,,,.. |  | | Report (issue) | | ............ Hornblendite, hornblende diorite, quartz diorite ..................................... Twin...Chemical trends in gabbro, pyroxenite, and hornblende diorite ................................. Chemical and...Granodiorite ..................... Hornblende diorite and hornblendite............... Petrogenesis ....outcrops of layered and foliated biotitic hornblende diorite and massive pyroxenite ................... Photomicrographs...hornblende in Boulder Creek Granodiorite and hornblende diorite . Diagram of phase relations for Boulder Creek |  | Childe, F. C., Thompson, J. F. H., Mortensen, J. K., Friedman, R. M., Schiarizza, P., Bellefontaine, K., Marr, J. M. (1998) Primitive Permo-Triassic volcanism in the Canadian Cordillera tectonic and metallogenic implications. Economic Geology, 93 (2) 224-231 doi:10.2113/gsecongeo.93.2.224 | Journal (article/letter/editorial) | | BritishColumbia,contri- of centralBritishColumbia, and a sequence of felsievolcanic bution 83. and intrusive rocks...Energold MiningLtd.,900-543Granville Street,Van- southern eouver,BritishColumbia,CanadaV6C 1XS. suggest...qtz.-pag. porphynj northem sequence 7.• trondhjemite <•[• southern sequence • Triassic KutchoAssemblage...Jurassic +• granodiorite Early Triassic •.• diorite totonalire • trondhjemlte fault ..... road ...sulfidedeposits. tad andGabrielse, 1986);cappingthe sequence are marine Geologyof the KutchoAssemblage sedimentary |  | | Report (issue) | | Higgins and N.J. Soper 79 An Archaean sill complex and associated supracrustal rocks, Arveprinsen...K. Schønwandt 87 The Archaean Atâ intrusive complex (Atâ tonalite), north-east Disko Bugt, West Greenland...Garde and A. Steenfelt 141 Deformation at the southern boundary of the late Archaean Atâ tonalite and...and south of Torsukattak . Boye Sø anorthosite complex .................................................Nunataq ........................... Shear zones in southern Nuussuaq and the boundary between the Nuussuaq |  | | Book | | Geochemistry 2. D.R. HUNTER (Editor) Precambrian of the Southern Hemisphere 3. K.C. CONDIE Archean Greenstone Belts...Department of Geological Sciences, Universityof Southern California, Los Angeles, CA 90089, U.S.A. NICOLAS...Department of Geological Sciences, University of Southern California, Los Angeles, CA 90089, USA. P. JONATHAN.... . . . . .......... ....... ....... Lewisian Complex, northwest Scotland . . . . . . . . . . . . . ...Pharusian belt. 63 - Dahomey belt. 64 Damara belt. southern Africa . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | Chukot orogenic zones, which consist of Verkhoyansk complex deposits and the median massif of Kolyma. Intensive...along the coast of the Okhotsk Sea and in the southern part of the Chukot Peninsula [Chukotskiy Poluostrov]...and represent an entirely independent intrusive complex. The cause of sharp lineation in location of minor...of the complex consist mainly of porphyries: Quartz -albite, quartz -albite -orthoclase, diorite, quartz-diorite...quartz-diorite, and very rarely granodiorite. An extremely characteristic feature of the porphyry rocks of |  | | Report (volume) | | 49 1 no. 7 1 p. 1087 1 for the Pleistocene of southern California. ll Geoloaical Society of London...Formation) Middle Ordovician: Southeastern Missouri, southern Illinois, and western Kentucky. J. S. Templeton...Paper 431, p. 36-38, pl. 1. Predominantly clastic sequence including shale and siltstone, dolomitic sandstone...south end of northern belt and along west side of southern blocks. Adams Argillite Lower Cambrian: East-central...(table 1), 79-87, pl. 1. Name proposed for thick sequence of gently dipping andesitic and basaltic flows |  | | Journal (article/letter/editorial) | | compositional differences of the aliquots. The data do not permit to distinguish beyond any doubt whether...absolute age determinations were collected from a southern, older and northern, younger suite of granitic...15.400 15.404 II. Leucocratic granite of southern sequence S-56 S-57 S-57 r S-57 r S-57' S-57 r S-57...Salem suite rocks, compositionally ranging from diorite (Smith 1965; Miller 1973), adamellite (Miller 1973)...comprise Salem-type but also related granotoids that do not possess the characteristical macroscopic properties |  | Nokleberg, Warren J., MollStalcup, E.J., Miller, T.P., Brew, D.A., Grantz, Arthur, Reed, J.C., Plafker, George, Moore, Thomas E., Silva, S.R., Patton, W.W. (1994) Tectonostratigraphic terrane and overlap assemblage map of Alaska. Open-File Report Vol. 1994 (94-194) US Geological Survey doi:10.3133/ofr94194 | Report (issue) | | terrane. Fragment of a mildly to intensely deformed complex of turbidite deposits and variable amounts of oceanic...oceanic crust and associated rocks that exhibit a complex structural history, occur in a major thrust zone...the fragments and matrix in the complex. An example is the McHugh Complex in the northern Chugach terrane...inferred faults, or an intensely-deformed structural complex bounded by faults. Some terranes may be interpreted...shallow-water and nonmarine deposits. In eastern-southern Alaska, coarse KA Kandik River overlap assemblage |  | | Report (issue) | | Ryan Preface INTRODUCTION The Caribbean is a complex region that has attracted a variety of geologic...Surrounding this composite arc terrane are zones of complex tectonic activity, including the Puerto Rico and...Greater Antilles occurred dur- entire volcanic sequence and provides a framework on which other chapters...counterclockwise rotation of north coast carbonate sequence, Puerto Rico: Geophysical Research Letters, v...platform, representative strata of the entire sequence are exposed. The island is subdivided into three |  | | Report (issue) | | of ore deposits in Mexico from 1922 to 1926, in southern Arizona, Virginia and the Central Mining District...chiefly limestones, shales and intercalated quartz diorite sills, were thrust aside laterally by the magma...environments. "(d) 'Epithermal' ore bodies commonly do not outcrop, but the apex of the ore is at shallow...Billingsley and Locke long ago. Triple or more complex intersections are especially potent as localizers...units. "The chief copper-producing area is in southern Arizona and just over the borders of neighboring |  | Nokleberg, Warren J., Parfenov, Leonid M., Monger, James W.H., Baranov, Boris B., Byalobzhesky, Stanislav G., Bundtzen, Thomas K., Feeney, Tracey D., Fujita, Kazuya, Gordey, Steven P., Grantz, Arthur, Khanchuk, Alexander I., Natal'in, Boris A., Natapov, Lev M., Norton, Ian O., Patton, William W., Plafker, George, Scholl, David W., Sokolov, Sergei D., Sosunov, Gleb M., Stone, David B., Tabor, Rowland W., Tsukanov, Nickolai V., Vallier, Tracy L., Wakita, Koji (1994) Circum-North Pacific tectonostratigraphic terrane map. Open-File Report Vol. 1994 (94-714) US Geological Survey doi:10.3133/ofr94714 | Report (issue) | | original tectonic environment. For terranes with complex geologic histories, the chosen color indicates...offshore Cenozoic and Cretaceous sedi mentary basins do not matc h contacts of onshore Cenozoic and Cretaceous...terrane. Fragment of a mi ldly to intensely deformed complex consisting of varying amounts of turbidite deposits...terranes denotes both fragments and matrix in the complex. Many subduction zone terranes contain fragments...oceanic crust and associated rocks that exhibit a complex structural history, occur in a major thrust zone |  | | Report (issue) | | Centeno-Garcia 10. Lower Mesozoic facies and crosscutting sequence boundaries: Constraints on displacement ofthe:...along the Sawmill Canyon fault zone, southern Arizona: A sequence analysis of an intra-arc strike-slip...the Ouachita-Marathon-Sonora orogenic margin of southern Laurentia: Stratigraphic and structural implications...fault that projected into the Mojave Desert of southern California. In this region, the westward protuberance...diverse kinds of new data from northern Mexico and southern Arizona and provide information needed to test |  | Nokleberg, W.J., Parfenov, J.W., Norton, I.O., Khanchuk, A.I., Stone, D.B., Scholl, D. W., Fujita, Kazuya (1998) Phanerozoic tectonic evolution of the circum-north Pacific. Open-File Report Vol. 1998 (98-754) US Geological Survey doi:10.3133/ofr98754 | Report (issue) | | occurred subparallel to continental margins. The complex tectonics of this region is analyzed by the following...in major dextral-slip faulting in Interior and Southern Alaska, and along the western part of the Aleutian-Wrangell...also consist of an intensely deformed structural complex bounded by faults. Some terranes may be displaced...environment is difficult to determine. For terranes with complex geologic histories, the chosen tectonic environment...latitudes (for terranes with paleomagnetic data that do not conflict with stratigraphic and faunal data) |  | Corfu, Fernando, W. Davis, Donald, Stone, Denver, Moore, Michelle L (1998) Chronostratigraphic constraints on the genesis of Archean greenstone belts, northwestern Superior Province, Ontario, Canada. Precambrian Research, 92 (3) 277-295 doi:10.1016/s0301-9268(98)00078-3 | Journal (article/letter/editorial) | | 1991). Metasedimentary rocks are widespread at the southern edge of the subprovince and can be linked to the...overall structure of the Red Lake greenstone belt is complex and still poorly understood. The belt can be subdivided...(1995) and Corfu and Stone (1998a). northern and southern flanks, suggesting a general anticlinal structure...with subordinate tholeiitic components in the southern part, and yields a range of ages between ca 2760...represented a heterolithic pyroclastic unit and yielded complex U–Pb results that could have meant either the presence |  | | Report (issue) | | subduction-related deformation in the Proterozoic regime of southern Churchill Province, which did not permit either...(Fig. 1) of the Canadian Shield. The Bear and Southern provinces are not considered and a separate... The structural style of Superior Province is complex; recent studies (Poulsen et al., 1980; Schwerdtner...areas, although some areas appear to have less complex steeply dipping homoclinal sequences. THE GREENSTONE...and Thurston, tuff-breccia unit from the lower sequence at North Spirit Lake is 3013 Ma (Nunes and Wood |  | | Report (issue) | | the central Transverse Ranges is a structurally complex region that is traversed by several major fault...complexes. The Crafton Hills horst-and-graben complex, the Tokay Hill and Peters faults in the Cajon...Cajon Pass region, and the Beaumont Plain fault complex are extensional fault zones. The compressional and...transform fault system. The Banning fault has had a complex history that includes both left- and right-lateral...Valley, and San Bernardino Mountains segments. The complex San Bernardino Mountains segment consists of multiple |  | | Book | | ..,, RO BE RT G. D O U G L AS University of Southern California Cover picture by Miriam Smith of... 14 MIDDLE MIOCENE PALEOGEOGRAPHY OF COASTAL SOUTHERN CALIFORNIA AND THE CALIFORNIA BORDERLAND -- EVIDENCE...STRIKE-SLIP FAULTS OF THE LAKE MEAD REGION OF SOUTHERN NEVADA .. ... . . . . . . . . . . . . . . . ....with the previous volumes, the realities of a complex tectonic history have rendered "final" paleogeographic...of the circum-Pacific rim has undergone a more complex tectonic evolution during the Cenozoic than the |  | | Report (volume) | | colored rocks) of the Avan Hills mafic-ultramafic complex (Jurassic), western Brooks Range. The emplacement...mechanism of the Siniktanneyak mafic-ultramafic complex, which is also located in the western Brooks Range...is similar to the Avan Hills mafic-ultramafic complex, is the subject of a paper by Morin and Moore in...Gravity models of the Siniktanneyak mafic-ultramafic complex, western Brooks Range, Alaska: evidence for thrust...others, 1985) that compose part of an accretionary complex located seaward of the Contact fault. Volcanogenic |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . 30 Southern Cass, Todd, and western Stearns counties. . ................ 38 Northern Mille Lacs, Kanabec, southern Aitkin, and western Pine counties. . . . . . .... . . . . . . . . . . . 63 Pine, Carlton, and southern St. Louis counties. . . . . . . . 65 90 Outcrops...of the general similarity of the rocks and the complex deformation which they have suffered. As regards...l\IINNESOTA The basal rocks of Minnesota consist of a complex of granite, gneiss, and greenstone of Archean age |  | | Report (issue) | | of hypogene uranium minerals is a part of this sequence. Abstract of published article (S. C) Author...graben with recently active subsidence in the southern part. Author abstract The Pennsylvanian System...the Paria Plateau area of northern Arizona and southern Utah the Chinle Formation of Upper Triassic age...and Deseret Formations and is associated with a diorite intrusi VB. Hydrothermal alteration products were...greater than 50 feet. The contact zone of the quartz diorite intrusive and the Deseret Limestone-Dolomite has |  | | Report (volume) | | accumulation of plagioclase phenocrysts. The basalt sequence in and north of the northern half of the quadrangle...dark dense basalt, whereas the sequence in and south of the southern half lacks such flows and instead...xenolith in Columbia River Basalt, collected in the southern part of the quadrangle. The little petrologic...central Washington and in the Snake River Plain of southern Idaho, but he (1901) subsequently revised the...or formation, forms most of the surface of the southern two-thirds of Washington and the northern one-third |
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