Normal view MARC view ISBD view

Massive sulfide deposits related to submarine volcanic activity / Luis Jaramillo.

By: Jaramillo, Luis [Autor].
Material type: materialTypeLabelBookPublisher: Bogotá, Colombia : Instituto Nacional de Investigaciones Geológico Mineras (INGEOMINAS) 1968-2004, 1978Description: 25 Hojas : Ilustraciones, Cuadros, Gráficas, 22 cm.Subject(s): Aguas minerales -- Revistas | Geología -- Revistas | Volcanes Submarinos -- Revistas | Mineralogía -- Revistas | Volcanes -- Revistas
Contents:
Geosynclinal igneous activity -- Geological environments of massive sulfides -- Wall rock alteration -- Regional metamorphism -- Genesis of the ore minerals -- Exploration guides -- Conclusions -- References.
In: Geology 822 Metallogenesis Term PaperSummary: Massive sulfide deposits are commonly related to volcanic rocks and associated sediments that accumulated in eugeosynclines. Ore bodies may occur in both, volcanic and sedimentary rocks but probably more than 80% of the massive sulfides in the world are genetically related to volcanic rocks of the basalt-andesite-rhyolite association. By reason of their early appearance in geosynclinal belts volcanics and related sediments have been affected by regional metamorphism; this masks some of the associated massive sulfides. Considerable evidence support their formation from submarine hydrothermal emanations. Marine environments seems to be very important in the concentration of the metals. In subaerial eruptions the ore fluids are dispersed or lost to the atmosphere whereas in subaqueous eruptions they mix with sea water and with increasing concentration the metals precipitate and accumulate in favourable sites. Aparetly some deposits of manganese, chert, banded silica and iron formation that usually accompany massive sulfides, were produced by similiar processes. Most of the important deposits in the world show evidence of submarine environment. Such evidence is found in mining districts of Jafan, Cyprus, United States and Canada.
    average rating: 0.0 (0 votes)
Item type Current location Collection Call number Copy number Status Date due Barcode
Analítica Analítica SGC - Bucaramanga
Hemeroteca - Separatas SBU-00067 (Browse shelf) 2 Available 076029
Informes técnicos Informes técnicos SGC - Medellin
Informes técnicos I-5176 (Browse shelf) 1 Available 080908

La Biblioteca posee dos ejemplares, copia a blanco y negro.

Incluye Contenido, Incluye Referencias Bibliográficas.

Geosynclinal igneous activity -- Geological environments of massive sulfides -- Wall rock alteration -- Regional metamorphism -- Genesis of the ore minerals -- Exploration guides -- Conclusions -- References.

Massive sulfide deposits are commonly related to volcanic rocks and associated sediments that accumulated in eugeosynclines. Ore bodies may occur in both, volcanic and sedimentary rocks but probably more than 80% of the massive sulfides in the world are genetically related to volcanic rocks of the basalt-andesite-rhyolite association.

By reason of their early appearance in geosynclinal belts volcanics and related sediments have been affected by regional metamorphism; this masks some of the associated massive sulfides.

Considerable evidence support their formation from submarine hydrothermal emanations. Marine environments seems to be very important in the concentration of the metals. In subaerial eruptions the ore fluids are dispersed or lost to the atmosphere whereas in subaqueous eruptions they mix with sea water and with increasing concentration the metals precipitate and accumulate in favourable sites.

Aparetly some deposits of manganese, chert, banded silica and iron formation that usually accompany massive sulfides, were produced by similiar processes. Most of the important deposits in the world show evidence of submarine environment. Such evidence is found in mining districts of Jafan, Cyprus, United States and Canada.

There are no comments for this item.

Log in to your account to post a comment.

Click on an image to view it in the image viewer

Servicio Geológico Colombiano

biblioteca@sgc.gov.co

DIRECCIÓN: Diagonal 53 N0. 34 - 53 - Bogotá D.C. Colombia

Teléfonos:

(601) 220 0200 - (601) 220 0100 - (601) 222 1811

Línea de Atención al Ciudadano y Denuncias:

01 - 8000 - 110842 - Fáx: (601) 220 02 00

Línea de atención 24 horas para emergencias radiológicas +57 3173662793 - lunes a viernes 8.00 a.m. a 5 p.m. en todas nuestras sedes.

Todos los derechos reservados 2016. Apartado Aéreo A.A 4865

Tecnología Koha implementada por