More documents will be included with time. (Toque aqui para version en castellano)

.1 Geology "Round Mountain" Gold Mine, Nevada, ALGS
Geology of the “Round Mountain” gold mine in Nevada, United States of America, and potencial for exploration of similar deposits in the Andes. 6p extended abstract. Key-words: Andes, caldera, Colombia, Ecuador, Galeras volcano, gold, hydrothermal alteration, Guagua-Pichincha volcano, Hilaló volcano, hydrothermal ore deposit, leaching, low sulfidation, mineral exploration, Nevada, Nevado del Ruiz volcano, ore deposit, Perú, precious metal, pyroclastic rock, Quaternary, Round Mountain, tuff, United States of America, volcanic rock.

.2 Au & Cu dissemination, Saldaña Formation, Colombia, ALGS
Gold and copper dissemination in the igneous-volcanic Saldaña Formation, Natagaima, Tolima, Colombia, and Extension of the mineral province in the Andean Cordillera. 12p pdf extented abstract. Key-words: Andes, Colombia, copper, disseminated sulfides, gold, hydrothermal alteration, Jurassic, mineral deposits, mineral exploration, porphyry Cu, porphyry systems, Saldaña Formation, South America.

.3 Granitoid-related IOCG mineralization, Lufilian Arc, Africa, ALGS
Granitoid-related iron-oxide-copper-gold mineralisation, Greater Lufilian Arc, Zambia and Namibia. 4 p abstract. Key-words: Africa, anorogenic rocks, copper, gabbroid, gold, granitoid, IOCG, iron oxide, Namibia, mineral deposits, Zambia.

.4 Quartz Pods, IOCG exploration guide?, ALGS
Quartz pods: an exploration guide to iron-oxide–copper–gold mineralisation? Abstracts. Key-words: Africa, IOCG, Namibia, Greater Lufilian Arc, hydrothermal alteration, iron oxide bodies, mineral exploration, quartz, Zambia.

5 Granitoids & Volcs - Basement Central African Copperbelt, ALGS
Proterozoic A-Type granitoids and volcanic rocks that make the basement to the Central African Copperbelt, Zambia. GAC-MAC-SEG Conference, Quebec, Canada, May 2008. 1 page abstract. Key-words: Anorogenic, A-Type granite, Copperbelt, gabbroids, granitoids, rapakivi, volcanics, Zambia

6 Carajas Mineral Province, Brazil & IOCG mineralization, ALGS
Geological overview of the Carajás Mineral Province (Brazil) and its iron
oxide-copper-gold mineralization. GAC-MAC-SEG Conference, Quebec, Canada, May 2008. 1 page abstract. Key-words: Anorogenic rocks, Brazil, Carajas, copper, gold, granitoids, IOCG, iron ore, iron oxide-copper-gold, base metals, PGE

.7 Main portions of Ph.D. thesis, ALGS
Pre- and Post-Katangan granitoids of the Greater Lufilian Arc – geology, geochemistry and metallogenic significance. 14 pages (title, abbreviated contents, abstract and conclusions of Ph.D. thesis). Key-words: Africa, anorogenic ring complex clusters, anorogenic rock, ARCC, A-type granite, Bostwana, Chambishi, copper, Copperbelt, D.R.Congo, deposits, Domes Region, gabbro, gabbroid, geochemistry, geochronology, gold, granite, granitoid, Greater Lufilian Arc, Grootfontein, Hook Granite Batholith, iron, iron oxide-copper-gold, Kabompo Dome, Kalene Hill, Kalengwa-Kasempa, Kamanjab Batholith, Khorixas Inlier, Konkola, Lofdal, Mesopotamie, mineralization, Mufulira granite, Muliashi Porphyry, Mwombezhi Dome, Namibia, Nchanga, Nchanga Granite, Northwestern Zambia, Oas, Okwa, Otjiwarongo, Pb-U, Re-Os, rapakivi, Samba deposit, SHRIMP, sedimentary-hosted copper, Solwezi Dome, Summas Mountains, thorium, Ugab River, uranium, volcanics, West Lusaka/Kafue Flats, Witvlei, Zambia, zircon

.8 Jigsaw Breccias, ALGS
Jigsaw breccias – An introduction to hydrothermal breccias. ALGS, extended abstract, 5 page abstract. Key-words: breccia, jigsaw breccia, hydrothermal breccia, systematic description, de-pressurization, stockwork, mineral exploration, volcanic explosion, explosive fragmentation, methodology, second boiling, hydrothermal systems, field work, hydrothermal ore deposits, mineral deposits.

.9 S.P. profiling for exploration, case study, ALGS
Application of Spontaneous Potential profiles in the exploration of gold rich-epithermal low sulphidation veins in a humid region. 27 page pdf version of Power Point presentation and paper. Key-words: electricity, epithermal mineralization, geophysics, gold, humid environments, mineral exploration, natural potential, spontaneous potential, veins. Palabras-clave: ambiente húmedo, duplexa cizalla, electricidad, exploración minera, geofísica, geología estructural, mineralización epitermal, oro, potencial espontáneo, potencial natural, S.P., sistema de vetas, tropical, veta.

.10 Volcanic-hosted Au deposits "sandwich-style", ALGS
Volcanic strata-hosted gold deposits in quaternary volcanoes: The “sandwich-style” model – and applications for exploration in the Russian Far East. Key-words: Andes, Colombia, Ecuador, high sulfidation, hydrothermal, Kamchatka, lava, low sulfidation, mineral exploration, mineralization, Peru, pyroclastics, Quaternary, sandwich-style, volcanoes, volcanics.

11 Underground stratigraphy of NE Bogota. ALGS
"Estratigrafía del Material No-Consolidado en el Subsuelo del Nororiente de Santafé de Bogotá (Colombia) con Algunas Notas Sobre Historia Geológica". Presentado en el VII Congreso Colombiano de Geología, I Seminario Sobre el Cuaternario, agosto 26 de 1996. Key-words: Andes, angular unconformity, Bogota, Colombia, depositional environment, geology, historical geology, lacustrine deposits, lacustrine dynamics, Los Lagartos Fault, Quaternary, Sabana de Bogota, Sabana de Bogota Lake, Sabana Formation, stratigraphy, tectonics, Tunjuelo Formation, un-consolidated material, well. Palabras-clave: ambientes deposicionales, Andes, Bogotá, Colombia, Cuaternario, depósitos lacustres, discordancia angular, dinámica lacustre, estratigrafía, Falla de Los Lagartos, formación Sabana, formación Tunjuelo, geología, historia geológica, Lago de la Sabana de Bogotá, material no-consolidado, pozo, Sabana de Bogotá, tectónica.

.12 Underground geology of NE Bogota – Abstract, ALGS
"Geología del Subsuelo del Nororiente de la Ciudad de Santafé de Bogotá, D.C." –: 9 page abstract of undergraduate thesis, Geosciences Dpt., Universidad Nacional de Colombia, Nov. 1994. Key-words: Key-words: Andes, angular unconformity, Bogota, Colombia, depositional environments, geology, historical geology, lacustrine deposits, lacustrine dynamics, Los Lagartos Fault, non-consolidated material, pozo, Sabana de Bogotá, Sabana de Bogotá Lake, Quaternary, Sabana Formation, stratigraphy, tectonics, Tunjuelo Formation, well.

13 Groundwater in Colombia – Paper, ALGU
18 page paper published in 1987, Hydrological Sciences Journal, co-authored with Jaakov Gilboa. Key-words: aquifers, Cauca Valley, Cesar Valley, Colombia, exploitation, geology, groundwater, Guajira, hydrogeological basins, hydrogeology, Llanos Orientales, Magdalena Valley, Pacific coastal area, pozo, replenishment, Sabana de Bogota, recharge, water well.

14 Effects of aquifer overexploitation, Bogota Sabana – Paper, ALGU
4 page paper published in 2003, Materials and Geoenvironment. Key-words: Andes, Aquifer, Bogota Sabana, Colombia, cracking, Cundinamarca, Eastern Cordillera, engineering geology, exploitation, geology, groundwater, hydrogeology, potentiometric level descent, pozo, Quaternary, sedimentary rock, subsidence, subsurface, urban geology, water well.

15 Study of access tunnel to the powerhouse of the Guavio Project (Gachalá, Colombia), ALGU
Presentation at IAEG Congress, Lisbon, 1994. Key-words: Bieniawski Geomechanics Classification of Rock Masses, Colombia, Eastern Cordillera, geological balance, groundwater, hydroelectric project, sedimentary rocks, tunnel, tunnel advance rates

16 Geologia e Hidrogeologia de Bogota y su Sabana, ALGU
"Geology and Hydrogeology of Bogota and its Sabana", Key-words: Bogota, Colombia, Cretaceous, engineering geology, geology, glacial lake, groundwater, hydrogeology, northern Andes, pozo, Sabana de Bogota, sedimentary rocks, Tertiary, Quaternary

17 Descenso niveles de agua subterranea en la Sabana de Bogota, ALGU
"Groundwater level dropdown, Sabana de Bogota Basin", Key-words: Bogota, Colombia, engineering geology, glacial lake, hydrogeology, pozo, Sabana de Bogota, sedimentary rocks, static level dropdown.

18 Retos de la hidrogeologia colombiana en el Siglo XXI, ALGU
"Challenges of Colombian hydrogeology in the XXI Century", Key-words: Colombia, exploration, groundwater, hydrogeology, management, natural resources, policy, pozo.

.19 Politica y gestion del agua subterranea en Colombia, ALGU
"Groundwater Policy and Management in Colombia", Key-words: Colombia, exploration, groundwater, hydrogeology, management, natural resources, policy, pozo, well.

.20 Gestion del agua subterranea en Colombia, ALGU
"Groundwater Management in Colombia", Key-words: Colombia, exploration, groundwater, hydrogeology, management, natural resources, policy.

.21 Colombian Infrastructure, ALGU
"Colombian Infrastructure" Review paper on Colombian geology. Key-words: Colombia, geology, geological history, mineral resources, northern Andes, regional geology, stratigraphy.

.22 Geologia y vocacion minera del oriente colombiano, ALGU
Review paper on potential of eastern Colombia based on geology and ore deposits. Key-words: Amazonia, Arauca, bauxite, Caqueta, Casanare, Colombia, copper, diamonds, geology, geological history, gold, Guainia, Guaviare, iron ore, Llanos Orientales, Meta, mineral resources, northern Andes, Orinoquia, Putumayo, regional geology, stratigraphy, Vaupes, Vichada.

.23 La Falla de Bogota, ALGU
"The Bogota Fault", Key-words: active faults, Bogota, Colombia, engineering geology, faults, neotectonics, northern Andes, Sabana de Bogota, seismic evaluation, structural geology, tectonics, urban geology.

.24 Geological field trip around Sabana de Bogota, ALGS
"Geological field trip in the Sabana de Bogota". Key-words: Applied geology, Bogota, Colombia, engineering geology, environmental geology, faults, geology, glacial lake, groundwater, hydrogeology, mineral resources, northern Andes, Quaternary geology, raw materials, Sabana de Bogota, sedimentary rocks, stratigraphy, structural geology, subsidence, thermal springs, urban geology.
Palabras-clave: agua subterránea, agua termal, Bogotá, estratigrafía, excursión, fallas, formaciones, fuentes de materiales, geología, geología ambiental, geología aplicada, geología del cuaternario, geología estructural, geología urbana, geotecnia, lago de la Sabana de Bogotá, lago glaciar, pozo, Sabana de Bogotá, subsidencia.

.25 Petroleum basin of the Sabana de Bogota, Colombia, ALGS
"Report on the Petroleum Basin of the Sabana de Bogotá, Colombia", Key-words: Bogota, coal, coalbed methane, Colombia, Cretaceous, exploration, gas, hydrocarbon, northern Andes, oil, petroleum, Sabana de Bogota, Sabana de Bogota Basin, sedimentary basin, structural style, stratigraphy, Tertiary, well.

.26 Case Study: Exploration in auriferous large epithermal low sulfidation vein system, ALGS
“Estudio de Caso: Exploración en Sistema Grande de Vetas
Auríferas de Baja Sulfuración – Investigaciones Desarrolladas en el Proyecto Minero Antapite, Huancavelica, Perú", Key-words: Andes, deformation ellipsoid, epithermal, exploration, geophysics, gold, Huancavelica, low sulfidation, Peru, sponteneous potential, stratigraphy, structural geology, vein system, volcanics. Palabras-clave: Andes, Antapite, elipsoide de deformación, epitermal, estratigrafía, exploración geofísica, exploración minera, geofísica, geología estructural, oro, Peru, potencial espontáneo, rocas volcánias, sistema de vetas, veta.

.27 Rockfalls that occurred during 1997 in tunnels of the Chingaza Aqueduct, ALGU
"Los Derrumbes Ocurridos Durante 1997 en Túneles del Acueducto de Chingaza",Key-words: Andes, Bienawski Geomechanical Classification, black shale, Bogota, case study, Chingaza Aqueduct, Chuza-Ventana tunnel, Colombia, Cretaceous, Eastern Cordillera, fault, ground water, slump, strain, stratigraphy, underground erosion, Une Formation, Chipaque Formation, engineering geology, forensic geology, geology, geotecnics, hydrogeology, hydrostatic pressure, lining, mudstone, physical weathering, Pozo 4-Simaya tunnel, sedimentary rocks, structural geology, subsurface, tunnel.

.28 Human life in Space - Solution to problems of humanity, ALGS
Vida humana sostenida con exploración minera espacial – Solución a problemas de la humanidad. 1 page pdf abstract. Palabras-clave: escases mundial, espacio exterior, futuro, humanidad, minería espacial, recursos naturales, vida humana.

. 29 Yacimientos OHCO y prospectividad en Colombia, ALGS
Notas sobre yacimientos de tipo Oxido de Hierro-Cobre-Oro y su prospectividad en Colombia. 2p, pdf abstract. Palabras-clave: Africa, Andes, Brasil, Carajas, Colombia, Chile, cobre, exploracion minera, gabroides, granitoides, grupos de complejos anulares anorogenicos, mineral de hierro, mineralizacion, Nambia, oro, Peru, rocas anorogenicas, tierras raras, Zambia.

. 30 Brechas de Rompecabezas, ALGS
Brechas de rompecabezas. Resumen de 3p en pdf. Palabras-clave: brecha, brecha de rompecabezas, brechas hidrotermales, descripción sistemática, despresurización, estoverca, exploración minera, explosión volcánica, fragmentación explosiva, metodología, segunda ebullición, sistemas hidrotermales, trabajo de campo, yacimientos hidrotermales, yacimientos minerales.

. 31 Method of the multiple working hypothesis in geology, ALGS
Re-descubrimiento del método de las múltiples hipótesis de trabajo en geología. Articulo de 9 paginas en pdf. Palabras-clave: aulacógeno, Chamberlin, Conglomerado de Lima, filosofía, geología, Grandes Lagos de Norteamérica, Lima, método científico, múltiples hipótesis de trabajo, pensamiento geológico, Jurásico, Pérmico superior, Perú, rift, Suramérica, teoría del conocimiento, trabajo geológico, Triásico.

. 32 Alphabetical code to describe sediments, ALGS
Código alfabético para descripción de sedimentos y rocas sedimentarias en sondeos, excavaciones y afloramientos. Articulo de 7 p en pdf. Palabras-clave: código, codificación, descripción, metodología, perforaciones, pozo, rocas sedimentarias, sedimentos, sondeos, trabajo de campo.

. 33 Hydrology and Hydrogeology of the Colombian Pacific Region, ALGU
"Hidrologia e hidrogeologia de la Region Pacifica colombiana" 16 page pdf document. Key-words: Andes, aquifer, Bahia Solano, Baudo Sierra, Buenaventura, Cauca, Choco, coast, Colombia, groundwater, hydrogeology, hydrology, Nariño, Pacific, Pacific Coast Strip, Pacific Ocean, Pasto, permeability, pluviosity, precipitation, Quibdo, river, San Juan Valley, Tumaco, Upper Patia Valley, Valle, Western Cordillera.

34 Geological study of landslides along the La Palma-Pacho Highway (Cundinamarca, Colombia), ALGS
"Estudio geológico de los deslizamientos en la Carretera La Palma-Pacho entre el K 6 + 300 y el K 5 + 750 (Cundinamarca, Colombia)" Key-words: Andes, black shale, Colombia, Cretaceous, Cundinamarca, Eastern Cordillera, engineering geology, erosion, geomorphology, La Palma-Pacho Highway, landslide, mass wasting, organic mudstone, rainfall, regional geology, sedimentary rock, stratigraphy, structure, Villeta Group

. 35 Geological factors that affect excavations in Bogotá D.C., Colombia, ALGS
"Factores geológicos que afectan las excavaciones en Bogotá D.C., Colombia" 25 page pdf document. Key-words:Andes, Bogota, Bogota Sabana, Colombia, colluvium, engineering geology, geology, geological history, geotechnics, Sabana Formation, soil, stratigraphy, subsurface investigation, Tunjuelo Formation, urban geology.

. 36 Fieldwork Photographic Techniques - Workshop, ALGS
"Tecnicas fotograficas utiles en el trabajo de campo - Taller teorico-practico". Short course on applied field photography that is offered both in English and Spanish. Key-words: Digital photography, field geology, geology, illumination, panoramic photo, photography, sequential photo, stereoscopy, tips, workshop. Palabras-clave: Estereoscopía, fotografía, fotografia digital, fotos estereoscópicas, fotos panorámicas, fotos secuenciales, geología, geología de campo, iluminación, recomendaciones, taller.

37 Draft of Confidenciality Agreement to evaluate exploration project - Spanish text, LOGEMINSA
"Borrador de Acuerdo de Confidencialidad para evaluacion de un Proyecto Minero - Texto en castellano para evaluacion de las partes". Palabras-clave: acuerdo, arbitramento, Cámara de Comercio de Bogotá, Colombia, confidencialidad, contrato, derecho de contraofertar, exploración minera. Key-words: agreement, arbitration, Bogota Chamber of Commerce, Colombia, confidentiality, contract, mineral exploration, right of first refusal.

38 Precision Agriculture and Electrical Conductivity Mapping, ALGS
Technology to increase crop efficiency. 7 page Spanish document, with tables and figures.PDF format. Key-words: cationic exchange, cattle forage Colombia, electrical soil conductivity, GPS, harvest follow-up, mapping crops, mapping tools, organic matter content, precision agriculture, site-specific soil salinity, sampling, soil depth, soil difference characterization, soil productivity, soil properties, tropical crops, yield map, variable input, texture, soil variabilitty, zonificación detailed local zonation.

39 Electrical Conductivity Mapping, ALGS
Adaptation for Colombia of Site-Specific Guide 30, prepared by the U.S. Government and research institutions. By T. Doerge, N.R. Kitchen and E.D. Lund, Translated and adapted for Colombia by Alberto Lobo-Guerrero Sanz, LOGEMIN S.A. 7 page Spanish document with text, tables and figures. Key-words: cationic exchange, cattle forage Colombia, electrical soil conductivity, GPS, harvest follow-up, mapping crops, mapping tools, organic matter content, precision agriculture, site-specific soil salinity, sampling, soil depth, soil difference characterization, soil productivity, soil properties, tropical crops, yield map, variable input, texture, soil variabilitty, zonificación detailed local zonation.