 | | Journal (article/letter/editorial) | | Iriondo c,d a Programa de Posgrado en Ciencias de la Tierra, Centro de Geociencias, Universidad Nacional...known Mesozoic examples are part of the QuitovacâLa Choya deposits in the Caborca Orogenic Gold Belt...(Fig. 2) are La Herradura, El Chanate, San Francisco-Llano, Soledad-Dipolos, Noche Buena, La Choya, and... 2001; see Table 1), and ReâOs model ages in magnetite and pyrite (Quintanar-RuĂz, 2008). However, recently...Nevertheless, the available structural models at La Herradura (de la Torre-Carlos, 2004, 2009) suggest that this |  | Izaguirre, Aldo, Iriondo, Alexander, Kunk, Michael J., McAleer, Ryan J., Atkinson, William W., MartĂnez-Torres, Luis M. (2017) Tectonic Framework for Late Cretaceous to Eocene Quartz-Gold Vein Mineralization from the Caborca Orogenic Gold Belt in Northwestern Mexico*. Economic Geology, 112 (6) 1509-1529 doi:10.5382/econgeo.2017.4519 | Journal (article/letter/editorial) | | number of deposits currently in production (e.g., La Herradura, San Francisco-Llano, El Chanate, Soledad-Dipolos...~66â49 Ma Orogenic gold provinces or belts ages (Ma) La Pinta Bridge River Noche Buena Tajitos 30° ja...ia La Colorada Tres Piedras El Arco a Piedras Verdes o f Batopilas C o La Guadalupana La Reforma...Range lf C ja Age ~69â36 Ma ) ic La Paz O c CuliacĂĄn La Azulita e Malpica a United States...belt of the United States and Mexico and related mine sites and prospects are also shown. Downloaded |  | | Journal (article/letter/editorial) | | districts, including the Andacollo-Huinganco and La Primavera. Four types of primary gold deposits are...continues to flow eastward for ca. 50 km until La Herradura, where it changes course to southeastward flowing...Huinganco Tributary Primary gold source Erica Mine Sofia Mine Methodology River alluvium samples were collected...(hornblende), actinolite, olivine, zircon, apatite, magnetite, and barite (Castro and Gamba, 1994; McCready...Primary barite source City Andacollo La Primavera 625 La Herradura Mayal Chos Malal A. R. 0 km 20 |  | Izaguirre, Aldo, Kunk, Michael J., Iriondo, Alexander, McAleer, Ryan J., Caballero-Martinez, Juan Antonio, Espinosa-ArĂĄmburu, Enrique (2016) The Laramide Caborca orogenic gold belt of northwestern Sonora, Mexico; white mica 40Ar/39Ar geochronology from gold-rich quartz veins. Open-File Report 2016-1008. US Geological Survey doi:10.3133/ofr20161008 | Report (issue) | | studies (K-Ar, Ar-Ar (white mica), and Re-Os (magnetite)) exist for parts of the COGB, and previous work...lecontents.pdf. Quintanar-RuĂz, F.J., 2008, La Herradura ore deposit; an orogenic gold deposit in northwestern...Alamo-7 2. American Boy 3. Ana Celia 4. Betty Lee Mine 5. Cantera 6. Carretera-1 7. Carretera-2 8. Celaya-1...11. Chip Mine 12. Costa-1 13. Costa-3 14. Costa-4 15. Cubabi 16. Dolores 17. El CapitĂĄn Mine 18. El Chanate...JerĂłnimo 22. La Colorada 23. La Esperanza 24. La Herradura Sells 25. La Pinta USA Mine 26. LH08-1 33° |  | | Book | | Lower Paleozoic Sediments of the Cordillera Real, Bolivia H.-J. Schneider . . . . . . . . . . . . . . . ... 137 The Stratabound Kellhuani Tin Deposits, Bolivia B. Lehmann . . . . . . . . . . . . . . . . . .... . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc...Stratabound Iron Ores in the Silurian of Argentina and Bolivia M.-A. Boso and C. R. Monaldi . . . . . . . . .... . . . . . . . . . . . . . . . . 175 The "La Helvecia" Pb, Zn, and Barite Deposit, Argentina A. Brodtkorb |  | | Report (issue) | | Cu Skarn Pb-Zn Skarn Fe Skarn Volcanic-Hosted Magnetite Au-Ag-Te Vein Comstock Epithermal Vein Creede...geologicas-mineras sobre cobre en los prospectos de "Los Alisos", "La Caridad" y "El Alacran"- Reconocimiento geologico...L., and Gomez Caballero, A., 1986, Resultados de la evaluacion del deposito de boratos del area Tubutama...hierro de La Perla y La Negra, municipio de Camargo, Chihuahua [Iron deposits of La Perla and La Negra,...Cendejas F., C., and Barcenas R., A., 1978, Geologia de la region cuprifera del Transvaal, municipio de Cumpas |  | | Journal (article/letter/editorial) | | is a stable transformation product of biogenic magnetiteâRavi K. Kukkadapu, John M. Zachara, James K. Fredrickson...modelling of sulphidic waste rock dumps at the Aitik mine site, SwedenâClaire M. Linklater, Daniel J. Sinclair...Neoproterozoic and Early Tertiary alkaline magmatism in the La Biche River area, southeast Yukon TerritoryâL.C....BULLETIN DE LA SOCIĂTĂ GĂOLOGIQUE DE FRANCE Ăvolution tectonique et morphodynamique de la bordure sud...sud du Massif central, entre la Cesse et lâHĂ©rault (France)âJ.-P. Larue A linear model and topology for |  | | Report (issue) | | RICO ere ter eaxcsereu asfoie EO og ce eee EN ea La i John A. Dembosky Jr. and Thomas H. Anderson ae...Gulf of Mexico. They show that the Huizachal rocks (La Boca Formation) record Jurassic volcanism and plate... (Note: Cerro Berruga is distinct from Sierra de la Berruga, nearby to the south, underlain principally...eastward beneath the broad alleviated valley to Sierra La Vibora, where exposures of similar granite are overlain...stratigraphic relationships among the exposures in Sierra La Vibora (DeJong et al., 1988). Damon et al. (1962) |  | | Book (volume) | | 80301 Cover Photo: Chapter 20. 10 La Caridad Copper Mine, I. Salas, Guillermo P. 90-28579 â ...geothermal field, Puebla F. Romero R. . 77 8. La Primavera geothermal field, Jalisco . Saul Vengas...Geology and mineral deposits of the El Boleo copper mine, Santa Rosalia district, Baja California Sur . Ivan...copper deposit, Sonora Guillermo P. Salas 199 . 20. La Caridad disseminated copper deposits, Sonora Guillermo... H. Monje H. 215 23. Geology of the Tayoltita Mine, San Dimas District, Durango H. M. Clark . 219 |  | | Report (issue) | | Mexicana in the following issues of the BoletĂn de la Sociedad GeolĂłgica Mexicana, Volumen Conmemorativo...TectĂłnicas de MĂ©xico, and no. 2, Aspectos HistĂłricos de la GeologĂa en MĂ©xico, edited by Susana A. Ălaniz-Alvarez...F. Nieto-Samaniego; and no. 3, Temas Selectos de la GeologĂa Mexicana, edited by Ăngel F. Nieto-Samaniego...E Chihuahua A. S. U. ico ex M E W Fig. 4 E La Paz W Durango MazatlĂĄn E Pacific plate 20° Rivera...Cretaceous-Paleocene intrusive rocks ? 100° W ? La Paz 20° N Durango MazatlĂĄn ? ? ? 200 km ? ? Gdl |  | | Report (issue) | | 1035 A view of the main ore zone at the Carlin mine, Nevada. Popovich Hill is on the left and is underlain...geochemistry in the vicinity of the Adelaide Crown mine, Humboldt County, Nevada-by Theresa M. Cookro and...mapper (TM) data, Systeme Probatoire d'Observation de la Terre (SPOT) 10-m panchromatic stereo data, and Thermal...Sample localities from the low hills to the north of La Abra Plain have anomalous concentrations of molybdenum...direct reflection of the deposit at the New Cornelia mine. It is a zoned anomaly , and molybdenum is confined |  | Ruzicka, Alex, Grossman, Jeffrey, Bouvier, Audrey, Herd, Christopher D. K., Agee, Carl B. (2015) The Meteoritical Bulletin, No. 101. Meteoritics & Planetary Science, 50 (9) 1661 doi:10.1111/maps.12490 | Journal (article/letter/editorial) | | Luc Labenne on a gravel surface in 1999 near the mine named Toro, 70 km northeast of Taltal. Physical...are 3.0 wt.% FeO, 5.1 ppm Sc, 80 ppm Ni, 1.4 ppm La, 0.6 ppm Sm, 0.69 ppm Eu, 0.48 ppm Yb, 0.2 ppm Th...are 9.8 wt.% FeO, 24 ppm Sc, 320 ppm Ni, 8.1 ppm La, 3.7 ppm Sm, 0.75 ppm Eu, 3.2 ppm Yb, 1.7 ppm Th...with accessory Fe-Ti oxides (intergrown ilmenite+magnetite), chromite, pyrrhotite, merrilite and chlorapatite...pyroxene, plagioclase. Opaque phases are mainly magnetite and sulfides. Geochemistry: Olivine and pyroxene |  | | Report (issue) | | between the guerrillas of the Farabundo Marti para la Liberacion Nacional (FMLN) and the El Salvadorian...Chalchuapa Sierra de Apaneca Ahuachapan Yah AA La Hachadura Quezaltepeque Caluco SE vents Armenia...Ocean ( ) San Salvador avalanche deposit cA . » La Libertad , Nâ Figure 1. Location map. Triangles...Ataco caldera, ApâApaneca Naranjos, MCâMalacara, La Ninfas, LVâLaguna Verde, CuâCuyanausol, LRâLas Ranas...CVâCerro Verde, ECâEI Conejal, EAâEI Astillero, LOâLa Olla, CCâCerro Chino, SMâSan Marcelino. Modern Santa |  | Ruzicka, Alex, Grossman, Jeffrey, Bouvier, Audrey, Herd, Christopher D. K., Agee, Carl B. (2015) The Meteoritical Bulletin, No. 102. Meteoritics & Planetary Science, 50 (9) 1662 doi:10.1111/maps.12491 | Journal (article/letter/editorial) | | wt.%) FeO 2.9, Na2O 0.69, CaO 16, (in ppm) Sc 4.6, La 1.2, Sm 0.58, Eu 1.6, Yb 0.36, Th 0.08, and 1.1 ppb...was found by Luc Labenne at EstaciĂłn Zaldivar near la Mina Escondida while hunting for pallasites near...Presence of dusty olivine. Abundant assemblages of magnetite and sulfides (troilite) up to 100 ÎŒm. Rare metal...metal. Based on magnetic measurements, magnetite content is estimated to ~19 wt.% under the form of fine...objects are composed predominantly of Cr-bearing magnetite and Ni-bearing pyrrhotite with accessory djerfisherite |  | | Journal (article/letter/editorial) | | contains silica phase. Accessories are ilmenite, magnetite, troilite and rare iron metal. Geochemistry: (N...5.6, Na2O 0.369, CaO 15.2, and (in ppm) Sc 11.7, La 2.3, Sm 1.17, Eu 0.79, Yb 1.01, and Th 0.37. Oxygen...26, Na2O 0.372, CaO 15.4, and (in ppm) Sc 11.32, La 2.8, Sm 1.35, Eu 0.79, Yb 1.10, and Th 0.41. Classification:... 5 vol%), and dark matrix (approx. 60 vol%). Magnetite is abundant, troilite very rare. All fragments...Feldspar is typically >50 ÎŒm in size. Abundant magnetite, sulfides largely weathered. Shock grade S2. Geochemistry: |  | | Book (volume) | | Antonio Acosta-Vigil Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Armilla, Granada, Spain Alexandra...GeologĂa & Centro de Estudios Avanzados en Ciencias de la Tierra (CEACTierra), Campus de Linares, Universidad...Ambientales y BioquĂmica, Universidad de Castilla-La Mancha, Toledo, Spain Tiago Alves 3D Seismic Lab...Recerca Geomodels and Departament de DinĂ mica de la Terra i de lâOceĂĄ, Universitat de Barcelona, Barcelona... Spain Marcos Aurell Departamento de Ciencias de la Tierra, Facultad de Ciencias, Instituto de InvestigaciĂłn |  | | Book | | resulting from landslides caused by recent volcanism on La Palma and of the sub-marine eruption in 2011 a few...Canaria, Tenerife, La Gomera, La Palma, and El Hierro, along with the four smaller islets of La Graciosa, Alegranza...Lanzarote 143,000, Fuerteventura 107,000, La Palma 82,000, La Gomera 21,000, and El Hierro 11,000. In addition...approximately 400,000 visitors to the Taburiente Caldera on La Palma, but approximately 3.5 million to Teide volcano...exception of La Gomera, display signs of Holocene volcanism. Lanzarote, Tenerife, and La Palma had historical |
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