{"id":7160,"date":"2026-11-06T10:31:29","date_gmt":"2026-11-06T15:31:29","guid":{"rendered":"https:\/\/canasanta.ca\/?p=7160"},"modified":"2026-11-06T10:31:29","modified_gmt":"2026-11-06T15:31:29","slug":"stonehenge-piedra-altar-origen-escocia","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/historia\/stonehenge-piedra-altar-origen-escocia\/","title":{"rendered":"STONEHENGE PIERDE OTRA PISTA SOBRE SU ORIGEN"},"content":{"rendered":"

Durante d\u00e9cadas, una enorme losa situada en el coraz\u00f3n de Stonehenge<\/strong> ha planteado una pregunta aparentemente sencilla: \u00bfde d\u00f3nde sali\u00f3? La llamada Piedra del Altar pesa alrededor de seis toneladas y mide unos 4,9 metros. Su composici\u00f3n no encaja con la de los grandes bloques que forman el c\u00e9lebre c\u00edrculo de piedra. Ahora, un nuevo an\u00e1lisis geol\u00f3gico publicado el 5 de noviembre de 2026<\/strong> vuelve a complicar la investigaci\u00f3n: las rocas examinadas en el noreste de Escocia no ofrecen una coincidencia completa con el misterioso monolito.<\/p>\n

El resultado no significa que los investigadores hayan identificado una procedencia alternativa. Significa que la hip\u00f3tesis escocesa, considerada especialmente prometedora durante los \u00faltimos a\u00f1os, necesita una comprobaci\u00f3n mucho m\u00e1s precisa. La investigaci\u00f3n, difundida por la Universidad de Gales del Sur<\/strong>, aparece en el Journal of the Geological Society<\/em> y combina varias t\u00e9cnicas para establecer una especie de huella geol\u00f3gica de la piedra.<\/p>\n

UNA PIEDRA QUE DESAF\u00cdA LAS HIP\u00d3TESIS<\/h2>\n

Durante buena parte del siglo XX se sostuvo que la losa hab\u00eda llegado desde el oeste de Gales, regi\u00f3n de donde proceden otras piedras menores del monumento. Sin embargo, estudios posteriores descartaron aquella explicaci\u00f3n. En 2024, el an\u00e1lisis de minerales microsc\u00f3picos reorient\u00f3 la b\u00fasqueda hacia la cuenca de Orcadia, en el noreste de Escocia, a cientos de kil\u00f3metros de la llanura de Salisbury.<\/p>\n

El nuevo equipo, dirigido por el ge\u00f3logo Duncan Pirrie<\/strong>, revis\u00f3 esa posibilidad examinando caracter\u00edsticas sedimentarias, minerales, composici\u00f3n qu\u00edmica y se\u00f1ales isot\u00f3picas. Tambi\u00e9n estudi\u00f3 fragmentos conservados en museos y compar\u00f3 los resultados con materiales procedentes de afloramientos geol\u00f3gicos. Ninguno de los lugares estudiados present\u00f3 la combinaci\u00f3n completa de propiedades buscada.<\/p>\n

Este matiz resulta fundamental: la falta de correspondencia entre las muestras disponibles no equivale a demostrar que toda Escocia queda descartada. El territorio es extenso y no se han analizado todas sus formaciones rocosas. Los autores consideran que el perfil obtenido permitir\u00e1 dirigir las pr\u00f3ximas expediciones hacia zonas m\u00e1s concretas y evitar b\u00fasquedas infructuosas.<\/p>\n

UN VIAJE DE CIENTOS DE KIL\u00d3METROS<\/h2>\n
\"Piedras
Stonehenge, Inglaterra. Fotograf\u00eda de contexto: Jessi Pena \/ Unsplash.<\/figcaption><\/figure>\n

En arqueolog\u00eda, saber de d\u00f3nde provino una piedra puede parecer un detalle secundario. En Stonehenge, sin embargo, esa informaci\u00f3n toca una cuesti\u00f3n central: c\u00f3mo se organizaron las comunidades prehist\u00f3ricas para construir un monumento que exig\u00eda transportar materiales pesados y coordinar trabajos durante generaciones. Una fuente remota implicar\u00eda redes de contacto, conocimientos t\u00e9cnicos y decisiones colectivas dif\u00edciles de reconstruir solo a partir de las piedras que permanecen en pie.<\/p>\n

Stonehenge fue levantado en distintas fases, aproximadamente entre el 3000 y el 1600 antes de nuestra era. Sus grandes bloques de arenisca silicificada, conocidos como sarsens<\/em>, conviven con piedras menores de otras procedencias. La Piedra del Altar ocupa una posici\u00f3n singular: permanece tendida y parcialmente cubierta por otras estructuras ca\u00eddas, lo que dificulta observarla directamente y obliga a aprovechar cuidadosamente las muestras hist\u00f3ricas.<\/p>\n

El debate sobre su viaje tampoco est\u00e1 resuelto. Algunas investigaciones han explorado la posibilidad de que antiguos glaciares desplazaran bloques hacia el sur antes de que grupos humanos los transportaran hasta su emplazamiento definitivo. Otras interpretaciones conceden mayor protagonismo al traslado deliberado por tierra o por rutas acu\u00e1ticas. Ninguna de esas reconstrucciones puede darse por demostrada mientras no se determine con suficiente confianza el origen exacto del material.<\/p>\n

LA IMPORTANCIA DE DESCARTAR CAMINOS<\/h2>\n

For Richard Bevins<\/strong> y Nick Pearce<\/strong>, participantes en la investigaci\u00f3n, excluir lugares que parec\u00edan plausibles tambi\u00e9n representa un avance. Cada comparaci\u00f3n fallida reduce el n\u00famero de candidatos y mejora los criterios para examinar nuevas muestras. La ciencia no siempre progresa con una respuesta definitiva; a veces lo hace mostrando por qu\u00e9 una explicaci\u00f3n atractiva todav\u00eda no est\u00e1 suficientemente respaldada.<\/p>\n

El estudio recuerda adem\u00e1s que las distintas pruebas geol\u00f3gicas no responden necesariamente a la misma pregunta. La edad de los granos minerales puede se\u00f1alar grandes regiones donde se formaron ciertos sedimentos, mientras que la textura, la qu\u00edmica y las asociaciones minerales permiten evaluar si una cantera o un afloramiento espec\u00edfico constituye una fuente probable. La coincidencia parcial entre dos rocas no demuestra que una proceda del lugar donde se encontr\u00f3 la otra.<\/p>\n

El enigma permanece abierto. La nueva investigaci\u00f3n ofrece una descripci\u00f3n m\u00e1s detallada de la Piedra del Altar, pero no autoriza a anunciar un origen descubierto ni a reconstruir una ruta de transporte definitiva. Hasta que aparezca una correspondencia geol\u00f3gica convincente, el monumento seguir\u00e1 conservando uno de sus secretos m\u00e1s importantes: el punto de partida de una piedra que termin\u00f3 ocupando un lugar central en la prehistoria brit\u00e1nica.<\/p>","protected":false},"excerpt":{"rendered":"

Un nuevo estudio geol\u00f3gico descarta coincidencias con las muestras analizadas en Escocia y mantiene abierto el origen de la Piedra del Altar.<\/p>","protected":false},"author":284226809,"featured_media":7158,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[33205457,3503],"tags":[33208674,33208673,33208672],"class_list":["post-7160","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-historia","tag-arqueologia-prehistorica","tag-piedra-del-altar","tag-stonehenge"],"acf":{"introduccion":"","fuentes_y_referencias":"Pirrie, D. et al. 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