Glossary entry (derived from question below)
Spanish term or phrase:
manto de tosca
English translation:
calcrete layer/ hardpan layer
Spanish term
manto de tosca
El cultivo de trigo es uno de los cultivos mas importantes de la Planicie con tosca de la Región Semiárida Pampeana Central, y como tal se encuentra sometido a las importants variaciones de los elementos del clima que le impone la condición de semiaridez de la región. Asi mismo, los suelos se caracterizan por un alto contenido de limo que los hacen propensos a sufrir serios problemas de compactación y a limitar por esa condición su capacidad de almacenaje, capacidad que de por sí se encuentra disminuída por la presencia de mantos de tosca imprmeables a no mas de 1,40 m de produndiad. Esta situación impone al cultivo de trigo situaciones de estrés hídricos que hecen que los rendimientos unitarios sean muy variables y como tal la producción regional.
Thanks a lot for your help
Ceci
| 4 +1 | calcrete layer/ hardpan layer |
Ashwin Goud
|
| 4 | hardpan stratum |
margaret caulfield
|
| 2 | mantle of volcanic rock (in Colombia Tosca is a volcanic rock overlying the auriferous strata) |
Taña Dalglish
|
Apr 14, 2009 23:26: Richard Boulter changed "Level" from "Non-PRO" to "PRO"
Apr 19, 2009 19:09: Ashwin Goud changed "Edited KOG entry" from "<a href="/profile/0">'s</a> old entry - "manto de tosca"" to ""calcrete layer/ hardpan layer""
PRO (3): Ashwin Goud, Taña Dalglish, Richard Boulter
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Proposed translations
Spain
Your translation is my business
Native in: English 
, Spanish
Works in: Spanish to English, English to Spanish, Chinese to Spanish, and 5 more.
calcrete layer/ hardpan layer
| agree |
Lisa McCarthy
: Calcrete layers - http://www.ecomanage.info/products/Deliverable2_7_BBlanca.pd...
16 mins
|
Jamaica
Translating the Ideas Behind the Words
Native in: English (Variant: British)
Works in: Spanish to English, English to Spanish, French to English, and 2 more.
mantle of volcanic rock (in Colombia Tosca is a volcanic rock overlying the auriferous strata)
mantos de tosca impermeables - mantles of impermeable volcanic rock
http://www.archive.org/stream/spanishenglishdi00lucarich/spa...
72 SPANISH-ENGLISH
Tosca (Col.) - - A volcanic rock overlying the
auriferous strata.
http://www.mijnwoordenboek.nl/EN/theme/GO/EN/ES/P/1.html
pan
EN: pan, hardpan
ES: capa endurecida, capa tosca
Definition EN: a) generally, any hard and/or compact(ed) layer; b) more particularly, a chemically indurated layer, the soil particles being cemented with organic matter, SiO2,sesquioxides or CaCO3
Suerte.
Accurate, natural and very hard-working
Native in: English , Spanish
Works in: Spanish to English, English to Spanish, French to English, and 3 more.
hardpan stratum
(b) means attached to said frame for creating a fracture zone in said subsurface hardpan stratum and said topsoil stratum, wherein said fracturing means ...
www.patentstorm.us/patents/5437336/claims.html - Páginas similares
Method and apparatus for creating an advantageous growing zone in ... - [ Traducir esta página ]In certain regions of the world, a subsurface hardpan stratum lies below an upper stratum of soil in which plants are planted. This hardpan stratum is ...
www.patentstorm.us/patents/5437336/description.html - Páginas similares
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Method for fracturing sub-surface hardpan by drawing a ... - [ Traducir esta página ]A method for lifting an fracturing a sub-surface stratum of hardpan having a level of upper extent and a level of lower extent, in soil having a supporting, ...
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de DC Symonds - 1990 - Citado por 1 - Artículos relacionados - Las 2 versiones
The Geotechnics of Hard Soils--soft Rocks: Proceedings of the ... - Resultado de la Búsqueda de libros de Googlede A. Evangelista, L. Picarelli - 2000 - Soil mechanics
The latter stratum may be under as much as 9 m of head if there is a hydraulic ... in the hardpan stratum, four case studies are summarized in Table 2. ...
books.google.es/books?isbn=9058090213...
hard pan - definition from dictionary.die.net - [ Traducir esta página ][Local, U. S.] Hard pan, the hard stratum of earth lying beneath the soil; hence, figuratively, the firm, substantial, fundamental part or quality of ...
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Diaphgragm Wall Excavation: Case Studies - [ Traducir esta página ]The south slurry wall was braced by tiebacks inclined 45° at El. -10ft CCD at the slurry wall face, with fixed length within the hardpan stratum. ...
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Discussion
If the context shows that the mantle is composed of volcanic rock in this text, then 'hardpan' would not apply. 'Volcanic soils', as in mantles of volcanic ash overlying other types of soil, can be excellent for growing crops on the surface. Some types of volcanic ash can also be compressed into impermeable hardpan at depths in the earth above the aquifer (or below it, for that matter).
'Mantle' seems more commonly used than 'layer' in subterranean geological references of this type, in my experience.
Here manto de tosca is referred to as calcretes.