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Choco Colombia

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Journal Article
Journal: Economic Geology
Published: 01 November 1979
Economic Geology (1979) 74 (7): 1687–1692.
Image
Backscattered-electron images of platinum nuggets from <span class="search-highlight">Chocó</span>, <span class="search-highlight">Colombia</span> (a, ...
Published: 01 March 2019
Fig. 1. Backscattered-electron images of platinum nuggets from Chocó, Colombia (a, b) and Córrego Bom Sucesso, Minas Gerais, Brazil (c, d). The Bom Sucesso nuggets are botryoidal and arborescent and consist of Pt and Pd in variable amounts. The Chocó nuggets are Pt-Fe intermetallic compounds
Journal Article
Published: 01 August 1971
Bulletin of the Seismological Society of America (1971) 61 (4): 1041–1049.
...J. E. Ramírez abstract On September 26, 1970, three main earthquakes, followed by over 300 aftershocks, caused havoc in Puerto Mutis and neighboring towns on the Pacific Coast of the Department of Chocó, Colombia. It was the first time in the seismic history of Colombia that an old fault showed...
Journal Article
Journal: Economic Geology
Published: 01 March 2019
Economic Geology (2019) 114 (2): 201–206.
...Fig. 1. Backscattered-electron images of platinum nuggets from Chocó, Colombia (a, b) and Córrego Bom Sucesso, Minas Gerais, Brazil (c, d). The Bom Sucesso nuggets are botryoidal and arborescent and consist of Pt and Pd in variable amounts. The Chocó nuggets are Pt-Fe intermetallic compounds...
FIGURES | View All (6)
Journal Article
Published: 21 January 2020
Mineralogical Magazine (2020) 84 (2): 289–299.
... of solid inclusions (abundant inclusions of Ir alloy as well as Os alloy, laurite–erlichmanite, bowieite, tulameenite and undetermined Pt–Pd–Ir–Rh antimonides and tellurides) that are very similar to those Pt–Fe alloys currently mined in western Colombia (the Chocó Department). These features allow us...
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Series: AAPG Memoir
Published: 01 January 2015
DOI: 10.1306/13531936M1083642
EISBN: 9781629812724
... found a CPD shallowing beneath Caguan–Putumayo and eastern Llanos Basins. Finally, based on the calculated geothermal gradient values in Colombia, we consider that the Golden zone of hydrocarbon occurrence most likely exists in the Choco–Uraba, eastern Cordillera, Guajira−Los Cayos, eastern Llanos...
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Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP316.7
EISBN: 9781862395640
... Abstract The macroseismic intensity of the 18 October 1992 Murindo-Atrato earthquake that affected the northwestern states of Colombia (Chocó and Antioquia) is reassessed using the newly developed INQUA Environmental Seismic Intensity Scale (ESI 2007) which is based on the evaluation...
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Series: GSA Special Papers
Published: 01 January 1995
DOI: 10.1130/SPE295-p75
... earthquake, active folding in the North Panama deformed belt, and a south-dipping Wadati-Benioff zone beneath Panama. Panama may also be continuing to collide eastward with the northern Andes. Rapid subduction is occurring at the Middle America (72 mm/yr), Ecuador (70 mm/yr), and Colombia (50 mm/yr) trenches...
Series: AAPG Memoir
Published: 01 January 2003
DOI: 10.1306/M79877C40
EISBN: 9781629810546
... Abstract New data on five regions of western Colombia combined with available information allow us to suggest that at least five structural complexes constitute the northwestern border of South America: Quebradagrande-Alao, Arquía-Guamote, Amaime-Chaucha, Cordillera Occidental, and Panamá-Chocó...
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Greenstone gold deposits in Venezuela: (a) <span class="search-highlight">Colombia</span> mine, El Callao; (b) Cr...
Published: 01 July 2005
FIGURE 4. Greenstone gold deposits in Venezuela: (a) Colombia mine, El Callao; (b) Croacia deposit, Choco; (c) La Camorra mine, El Dorado; (d) Las Cristinas–Brisas area, Km. 88; (e) Brisas deposit; (f) Las Cristinas deposit.
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The Baudo Pathway hypothesis posits that the earliest interchange of verteb...
Published: 01 May 2014
Figure 7 The Baudo Pathway hypothesis posits that the earliest interchange of vertebrates in the GABI occurred in the late Miocene, probably no later than ∼10.0 Ma, via the Serranías de San Blas-Darién and the Serranía de Baudo as the allochthonous Choco Terrane was being attached to the west
Journal Article
Journal: Economic Geology
Published: 01 November 2021
Economic Geology (2021) 116 (7): 1737–1738.
... America, with subheadings for the Chortis block or terrane (Guatemala, Honduras, El Salvador, Nicaragua), the Siuna block (Nicaragua), the Chorotega block (Costa Rica, Panama), the Panamá-Chocó block (Panama, Colombia), and the Central America Volcanic Arc (Guatemala to Colombia), which is described...
Journal Article
Journal: SEG Discovery
Published: 01 July 2022
SEG Discovery (2022) (130): 22–34.
... of Colombia and is known for its wet climate and the prevalence of artisanal gold and platinum placer mining. American-owned Compañia Minera Chocó Pacífico S.A. mined the placer deposits with six large Bucyrus bucket-wheel dredges for about 60 years, starting in 1916. In 1974 the company was sold to a newly...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1950
AAPG Bulletin (1950) 34 (10): 1998–2006.
.... F. C. Porter spent considerable time with the writer and at various times other geologists were assigned areas in the geosyncline in Colombia. Mention should be made of J. B. Miller, L. W. Whipple, and D. N. Klemme for their work in the Choco district of Colombia. The writer has compiled geologic...
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Samples of “platina” recovered from the placer deposits in the <span class="search-highlight">Choco</span> distri...
Published: 01 August 2008
FIGURE 3 Samples of “platina” recovered from the placer deposits in the Choco district of Colombia. Similar material was described by William Lewis to the Royal Society of London in 1754 and served as the feedstock for the first purification of Pt, Pd, Ir, and Os by Smithson Tennant and William
Journal Article
Journal: Palynology
Published: 01 February 2009
Palynology (2009) 33 (2): 99–104.
... on material from Colombia and the Gulf of Mexico. Details of processing are unknown, except for normal demineralization, oxidation and heavy liquid flotation. The late George R. Fournier collected a series of surface samples along the Choco River, Colombia. One sample yielded a residue consisting of 99...
FIGURES
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Tectonic terranes of northwest South America. Abbreviations: CAM = Caribbea...
Published: 01 May 2018
Fig. 2. Tectonic terranes of northwest South America. Abbreviations: CAM = Caribbean Mountain terrane, CAT = Caribbean terranes, CA-VA = Cajamarca-Valdivia, CCB = Central Colombia block, CCSP = Central Continental subplate realm, CG = Cañasgordas, CHO = Choco arc, DAP = Dagua-Piñon, EC = Eastern
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Main chronostratigraphic units in the northern Andes of <span class="search-highlight">Colombia</span> and the Pa...
Published: 21 November 2019
Figure 12. Main chronostratigraphic units in the northern Andes of Colombia and the Panamá-Chocó block (PCB) that are considered as potential source areas for lower Eocene–upper Oligocene rocks from the San Jacinto Fold Belt (SJFB) (modified from Gómez et al., 2015 ). All Paleogene rocks
Journal Article
Journal: GSA Bulletin
Published: 09 February 2022
GSA Bulletin (2022) 134 (9-10): 2453–2468.
... imprints at the front of the Chocó-Panamá indenter: Field data from the North Cauca Valley Basin, Central Colombia : Tectonophysics , v. 460 , p. 134 – 157 , https://doi.org/10.1016/j.tecto.2008.07.015 . Taboada , A. , Rivera , L.A. , Fuenzalida , A. , Cisternas , A. , Philip...
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Journal Article
Journal: SEG Discovery
Published: 01 July 2005
SEG Discovery (2005) (62): 5–22.
...FIGURE 4. Greenstone gold deposits in Venezuela: (a) Colombia mine, El Callao; (b) Croacia deposit, Choco; (c) La Camorra mine, El Dorado; (d) Las Cristinas–Brisas area, Km. 88; (e) Brisas deposit; (f) Las Cristinas deposit. ...
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