@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
nalt:306927_def
  a <https://lod.nal.usda.gov/naltv#Definition> ;
  rdf:value "Del latín durus, duro; capa dura. Horizonte en el subsuelo, cementado por la sílice iluvial a un grado tal que menos del 50 % del volumen de fragmentos secados al aire se enfrían en el agua o durante una inmersión prolongada en ácido clorhídrico (HCL). Pueden variar en cuanto al grado de cementación por sílice. Comúnmente contienen cementos adicionales, principalmente carbonato de calcio."@es, "A duripan (L. durus, hard; meaning hardpan) is a subsurface horizon that is cemented by illuvial silica to the degree that less than 50 percent of the volume of air-dry fragments slake in water or during prolonged soaking in acid HCl). Duripans vary in the degree of cementation by silica. In addition, they commonly contain accessory cements, chiefly calcium carbonate."@en ;
  dc:source "US, Environmental Protection Agency" .

<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

<https://lod.nal.usda.gov/naltv#Topic>
  a owl:Class ;
  rdfs:label "Topic"@en .

nalt:306927
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  dc:created "2017-08-16"^^xsd:date ;
  dc:modified "2017-11-10"^^xsd:date ;
  skos:broader nalt:213766 ;
  skos:definition nalt:306927_def ;
  skos:inScheme <https://lod.nal.usda.gov/nalt> ;
  skos:prefLabel "duripán"@es, "duripans"@en ;
  skos:related nalt:56445, nalt:21098 ;
  ns0:marc001 "81198" .

nalt:213766
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:306927 ;
  skos:prefLabel "toscas"@es, "hardpans"@en .

nalt:56445
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "sílice"@es, "silica"@en ;
  skos:related nalt:306927 .

nalt:21098
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "carbonato de calcio"@es, "calcium carbonate"@en ;
  skos:related nalt:306927 .