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Tucumán, Argentina

Provincia de Tucumán, Argentina

Geological features and history:
The province of Tucumán in their 22,524 km2 of extension approximately, has the most varied morphological characteristics: mountains high, partly sterile, but generally covered with vegetation, with numerous streams, extensive plains, small desert areas, everything crossed by a dense drainage network that ply practically its territory to go to lead the general collector than the river "Salí".
Petrografically its mountain ranges are formed by deposits of various types and geological age.
The core of its mountains consists of older deposits of Precambric age, composed of so-called metamorphic rocks, i.e. rocks which have undergone transformation processes by the action of physical and chemical agents. These ancient metamorphic rocks, forming the so-called "crystalline basement" and are especially slate, shale filitics, micacits quartz, etc... in part migmatized and with intrusions of igneous rocks.
On this complex of ancient rocks were deposited more modern sediments, possibly of Mesozoic age. These Mesozoic deposits would be formed by the destruction resulting conglomerates and consolidation of reddish sandstones, ancient rocks, partly calcareous Marly, i.e. a series of deposits still not completely well chronologically identified.
Then in the tertiary sediments of fluvial origin, generally reddish sandstones, conglomerates, also volcanic gaps, tufaceos deposits, are deposited after having largely been eroded deposits previously cited, these along with the more modern; composed of sediments of one smaller grain size, mud, sand, you loess and gravel deposits fanglomerados thick gravel, and medium-sized sands, especially in terraces, usually form the surface of the flat areas of the province.

Geological history:
In the Precambric or in the early stages of the Earth's history were depositing sediments silty, clay, charcoal and fine sands, as a result of a process of sedimentation at the bottom of the sea, which at that time covered much of the surface of Tucumán.
To remove the sea or raise these lands, materials that were gradually consolidated and later were affected by this already announced metamorphism, which transformed these sediments in metamorphic rocks that we see today. As result of this metamorphism and movements affecting the Earth's crust cracks and planes of separation where subsequently ascended the granitic magma (material in a State of fusion from the interior of the Earth) form which cooled and crystallized form bodies granite like "San Ignacio", "Potrerillos", "Balcosna", etc...
After these events, the region suffered orogenic processes, i.e. suffered an uprising and the weathering agents acted on this formations staying too long in this state of mind, until the invasion of a sea possibly of Mesozoic age which deposited marine sediments to his retirement, continuing until mid-tertiary sedimentation processes or end of this erathat brings a new event, volcanic activity, as a result, the accumulation of materials and formation of deposits of ash, tuffs, gaps and eruptive rocks observable in many parts.
Later suffers the basement a promotion and an erosion motivating the deposition of sediment conglomeradics.
Then appear the first glacial demonstrations at summits as a result of the drop in temperature, this already in the Quaternary era.
You spend glaciation, improves the climate, the temperature climbs, produced the effects of glacial erosion, glacial deposits, then dragging those deposits of foothills, later reaching the stage of rainfall and minor rivers drag force.




Mineral List

Mineral list contains entries from the region specified including sub-localities
'Albite-Anorthite Series'
'Allanite'
Almandine
Alumohydrocalcite
Amphibole Supergroup
'Asphaltum'
Augite
Autunite
'Autunite Group'
Azurite
Baryte
Beryl
var: Aquamarine
var: Emerald
'Biotite'
Calcite
var: Manganoan Calcite
Cassiterite
Chalcocite
Chalcopyrite
'Chlorite Group'
'Clinopyroxene Subgroup'
'Columbite'
Copper
 Cordierite
Corundum
Covellite
Cryptomelane
Diopside
Dolomite
Ferberite
Fluorite
Galena
'Garnet'
'Geode'
Gold
Graphite
'Gummite'
Gypsum
Halite
Hausmannite
Hematite
var: Martite
var: Specularite
Hübnerite
Hydroxylapatite
Ilmenite
'Iron Ochre'
 Kaolinite
Kasolite
'Limonite'
Magnetite
Malachite
'Manganese'
'Manganese Oxides'
'var: Manganese Dendrites'
Manganite
'Meta-autunite Group'
'Meteoritic Iron'
'Mica Group'
Microcline
Mirabilite
Molybdenite
Muscovite
'Olivine'
Opal
var: Wood Opal
Phlogopite
'Psilomelane'
Pyrite
Pyrolusite
'Pyroxene Group'
 Quartz
var: Chalcedony
var: Citrine
var: Rock Crystal
var: Rose Quartz
var: Smoky Quartz
Sanidine
Schorl
'Serpentine Group'
Sillimanite
Silver
Sphalerite
Spodumene
Staurolite
'Tantalite'
Thenardite
'Tourmaline'
'var: Rubellite'
Tungstite
Uraninite
Uranophane
'Wolframite'
Zeolite Group


171 entries listed. 57 valid minerals.

Localities in this Region

Argentina
Argentina

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Hugo A. Peña (1970): Minerales y rocas de aplicación de la Provincia de Tucumán. Dirección Provincial de Minas. Tucumán. República Argentina.

R. Mon, A. Urdaneta y L. Suayter (1971)- Estudio Geológico de las Sierras del Campo y La Ramada (Provincia de Tucumán). Acta Geológica Lilloana, Tomo X1: 15. Fundación e Instituto Miguel Lillo, Universidad Nacional de Tucumán.

H. G. Albornoz.CARACTERIZACIÓN DEL “SCRAP” DE MICA EN LOS YACIMIENTOS DE TALAPAZO, EL PICHAO Y RINCÓN DE QUILMES, SIERRA DE QUILMES, TUCUMÁN.
SEGEMAR. Delegación Tucumán. hgalbornoz@yahoo.com.ar


Sub Secretaría de Minería de la Nación (1974). Reporte Técnico. Argentina.

Celestino Danieli, Víctor Fabre, B. Quartino (1960) - Restos óseos uraníferos de la zona de El Brete, Dpto. Candelaria, Prov. de Salta; Acta geológica Lilloana. Tomo III, PÁG. 3-5. Fundación e Instituto Miguel Lillo, Universidad Nacional de Tucumán.

Raúl J. Tauber Larry (1972) - Informe sobre la expedición al "Brete", límite Tucumán - Salta. Tucumán. Informe Personal.

J. F. Bonaparte, J. A. Salfity, G. Bossi y J. E.Powell(1977). Hallazgo de dinosaurios y aves cretácicas en la Formación Lecho de El Brete (Salta), próximo al límite con Tucumán. Acta Geologica Lilloana, 14, 5-17..

Walking on Eggs: The Astonishing Discovery of Thousands of Dinosaur Eggs in the Badlands of Patagonia, by Luis Chiappe and Lowell Dingus. (June 19, 2001), Scribner. ISBN 0-7432-1211-8.

J. E. Powell (1992). Osteología de Saltasaurus loricatus (Sauropoda-Titanosauridae) del Cretácico Superior del Noroeste argentino. Actas del segundo curso de paleontología en Cuenca. Los Dinosaurios y su entorno biótico, J.L. Sanz y A.D. Buscalioni (eds.), J. L. Sanz y A. D. Buscalioni166-230.

J. F. Bonaparte & J. E. Powell (1980). A continental assemblage of tetrapods from the Upper Cretaceous of Northwestern Argentina (Sauropoda-Coelurosauria-Carnosauria-Aves). Mémoires de la Société Géologique de France, 139, 19-28.

J. Bonaparte y G. E. Bossi (1967). Sobre la presencia de dinosaurios de la formación Pirgua del grupo Salta y su significado cronológico. Acta Geológica Lilloana. Tomo 9: 25-44.

Carlos Díaz (1920): Yacimientos mineros de la Provincia de Tucumán. Informe del departamento de investigaciones industriales de la Universidad Nacional de Tucumán.

Abel Peirano (1943): Estudio geológico de la Quebrada de Amaicha, Dpto. de Tafí, Provincia de Tucumán. Cuaderno de mineralogía y geología. Tomo IV, Nº 14. Univ. Nacional de Tucumán.

Ruiz Huidobro: Hoja 11 e "Santa María" Dirección Nacional de Minería (inédita).

R. Chomnales (1963).

Carlos M. Falcón, LOS BASALTOS OLIVÍNICOS DEL EXTREMO AUSTRAL DE LA SIERRA DE LA RAMADA,PROVINCIA DE TUCUMÁN. Cátedra de Geología de Combustibles. INSUGEO.Facultad de Ciencias Naturales e Instituto Miguel Lillo. Miguel Lillo 205. 4000. Tucumán,Argentina.falcon@csnat.unt.edu.ar

R. Mon, A. Urdaneta y L. Suayter (1971). Estudio Geológico de las Sierras del Campo y de La Ramada (Provincia de Tucumán). Acta Geológica Lilloana, Tomo XI: 15, PÁGS. 291-306. Universidad Nacional de Tucumán. Fundación e Instituto Miguel Lillo.

Hugo A. Peña (1970) - La presencia de minerales de Uranio en una pegmatita de la sierra de Quilmes o El Cajón, Provincia de Tucumán.
Acta Geológica Lilloana TOMO XI:5. Fundación e Instituto Miguel Lillo, Universidad Nacional de Tucumán.

Hugo A. Peña (1965) - Las Pegmatitas Micacíferas del Cerro Pichao, Colalao del Valle, Dpto. Tafí. Informe inédito de la Dirección Prov. de Minas, Tucumán.

Víctor Angelelli (1961) - El Berilo en la República Argentina. Comisión Nacional de Energía Atómica. Informe Nº 60. Buenos Aires.

Juan C. Porto (1961) - Informe sobre una inspección a las pegmatitas de Alto Cazadero y Cueva Bazán, Sierras de Quilmes. Tucumán. Dirección Prov. de Minas. Inédito. Tucumán.

Hugo A. Peña (1965) - Las pegmatitas micacíferas de las sierras de Quilmes o El Cajón, Dpto. de Tafí (Tucumán).

Alfredo Kihien (1968) - Estudio geológico y petrográfico del cuerpo granítico de Loma Colorada, Colalao del Valle, Dpto. de Tafí (Tucumán). Dpto. de Geología del Instituto Miguel Lillo. Trabajo de Seminario. Tucumán (inédito).

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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