{"id":206,"date":"2011-12-02T16:34:17","date_gmt":"2011-12-02T16:34:17","guid":{"rendered":"http:\/\/cms.impact-structures.com\/?page_id=206"},"modified":"2012-03-10T11:35:08","modified_gmt":"2012-03-10T11:35:08","slug":"impact-ejecta-and-megabreccia","status":"publish","type":"page","link":"http:\/\/estructuras-de-impacto.impact-structures.com\/?page_id=206","title":{"rendered":"Eyecta de impacto y Megabrecha"},"content":{"rendered":"

En un sentido amplio, el t\u00e9rmino BRECHA puede ser tambi\u00e9n aplicado a los eyecta de impacto y a las masas de roca desplazadas dentro del cr\u00e1ter.\u00a0El manto de eyectas de la estructura de impacto de Ries (Alemania) est\u00e1 compuesto por las denominadas\u00a0brechas Bunte (multicolores)<\/strong>\u00a0(de tama\u00f1o de clasto < 25 m) y por megabloques al\u00f3ctonos (clastos coherentes > 25m). La distinci\u00f3n, que ha sido realizada por razones cartogr\u00e1ficas, es por otra parte arbitraria. Desechando esta arbitrariedad, el eyecta del crater de Ries puede ser en conjunto tambi\u00e9n denominado\u00a0megabrecha.<\/strong><\/p>\n

En la literatura de impacto, las brechas extensas que contienen grandes componentes se denominan por lo general megabrechas, y han sido frecuentemente citadas (p.e., para las estructuras de impacto de Wells Creek, la cuenca de Steinheim, Goces Bluff, Sierra Madera y Wetumpka). Tal vez la m\u00e1s impresionante megabrecha es la del Alamo (verhttp:\/\/www.mines.edu\/students\/m\/mmorgan\/<\/a><\/span>),\u00a0del dev\u00f3nico tard\u00edo, que proporciona la evidencia de un gigantesco impacto a poca distancia de la costa.<\/p>\n

Debajo, se muestran im\u00e1genes de la megabrecha polim\u00edctica del cr\u00e1ter de Ries (eyecta de la brecha Bunte) y de megabrechas polim\u00edcticas (masas de rocas desplazadas) de la cuenca de impacto de Rubielos de la C\u00e9rida (Espa\u00f1a)<\/p>\n

M\u00e1s informaci\u00f3n sobre megabrechas puede obtenerse en:<\/p>\n

http:\/\/www.impact-structures.com\/impact-spain\/the-rubielos-de-la-cerida-impact-basin\/megabreccias\/<\/span><\/a><\/span><\/p>\n

http:\/\/www.impact-structures.com\/impact-spain\/the-azuara-impact-structure\/the-azuara-megabreccia-near-belchite-and-herrera-de-los-navarros\/<\/span><\/a><\/span><\/p>\n

\"\"<\/a><\/p>\n

Fig. 1.\u00a0Megabrecha: eyecta de la brecha Bunte en la cantera de Ronheim. Estructura de impacto de Ries.<\/p>\n

\"\"<\/a><\/p>\n

Fig. 2. Aspecto de la megabrecha cercana a Barrachina, en la cuenca de impacto de Rubielos de la C\u00e9rida. La brecha polim\u00edctica coloreada tiene bastante en com\u00fan con la brecha Bunte del cr\u00e1ter de Ries.<\/p>\n

\"\"<\/a><\/p>\n

Fig. 3. Brecha Bunte de la estructura de impacto de Ries. Cantera de Ronheim.<\/p>\n

\"\"<\/a><\/p>\n

Fig. 4. Aspecto de la megabrecha de Barrachina, en la cuenca de impacto de Rubielos de la C\u00e9rida.<\/p>\n

\"\"<\/a><\/p>\n

Fig. 5. Brecha Bunte del cr\u00e1ter de Ries; cantera de Ronheim.<\/p>\n

\"\"<\/a><\/p>\n

Fig. 6. Megabrecha polim\u00edctica en la parte sureste del borde de la cuenca de impacto de Rubielos de la C\u00e9rida.<\/p>\n

\"\"<\/a><\/p>\n

\n

Fig. 7. Bunte brecha de la estructura de impacto de Ries; cantera de Gundelsheim. La altura de la pared es de 6 m.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

En un sentido amplio, el t\u00e9rmino BRECHA puede ser tambi\u00e9n aplicado a los eyecta de impacto y a las masas de roca desplazadas dentro del cr\u00e1ter.\u00a0El manto de eyectas de la estructura de impacto de Ries (Alemania) est\u00e1 compuesto por las denominadas\u00a0brechas Bunte (multicolores)\u00a0(de tama\u00f1o de clasto < 25 m) y por megabloques al\u00f3ctonos (clastos … Continuar leyendo \u00abEyecta de impacto y Megabrecha\u00bb<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1407,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"sidebar-page.php","meta":{"footnotes":""},"class_list":["post-206","page","type-page","status-publish","hentry"],"yoast_head":"\nEyecta de impacto y Megabrecha - ERNSTSON CLAUDIN ESTRUCTURAS DE IMPACTO - CR\u00c1TERES METEOR\u00cdTICOS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/estructuras-de-impacto.impact-structures.com\/?page_id=206\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eyecta de impacto y Megabrecha - 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