Hispanopedia WikiMoss is a carbonaceous chondritemeteorite that fell over the communities of Rygge and Moss in Østfold county, southeast southern Norway in the morning of midsummer day, July 14, 2006.
The last time a type CO3 meteorite fell from the sky was in 1937 with Kainsaz, Russia. There are 6 known falls of a CO3 meteorite. Being of the rare carbonaceous subtype, 'meteorite man' Robert Haag stated to the media that this was the most important meteorite fall since the Canadian Tagish Lake fall in January 2000.
History
Prelude
The summer of 2006 was the meteorite summer in Norway. The summer was very warm and dry. It was perfect weather to protect the valuable droppings that the skies let fall over Norway. It started in the beginning of June when on the 7th a very large meteor explosion was seen and heard over large areas in northernmost Norway. Although no meteorites was found from that event, its size stirred a whole world of meteorite aficionados and a stunned scientific community in Norway and abroad.
Then on the 10th of July it was announced on NRK1, Norway's number one TV channel, that a meteorite had been found in a man's driveway south of Stavanger. The story was soon denounced by the experts as being a plutonic rock from a nearby source.
But then, incredible as it was, just four days later the skies opened for a true meteorite fall event. This turned out to be the 13th find of a meteorite in Norway. At the same time its 9th fall.
As if this was not enough, at the end of August a very large fireball was seen north from Troms county to south of Bergen, almost along the whole coast of the country, but no meteorites were found.
Fall
At about 10:20 a.m. on the 14th of July a large meteor was seen in broad daylight by a large number of people heading north-northwest over Østfold county, Norway. It split into 4 or 5 smaller objects. It was seen from a large area extending outwards in all directions from the Oslofjord area, in north limited to roughly Lake Mjøsa, in east from Årjäng, Sweden, and in the southwest to the coast area of Sørlandet. Over Rygge and Moss a loud explosion and a rumbling sound was heard. A man near his summer cabin in Rygge saw and heard a small piece of stone hit an aluminium sheet about 2 meter away. This was the only directly observed impacting stone from the fall.
Finds
En total hubo cinco hallazgos separados [ 2 ] [ 3 ] [ 4 ] del meteorito Moss CO3.6. Se distribuyeron en un campo de dispersión de unos 6 kilómetros (3,7 millas) de largo desde el sureste en Rygge hasta el noroeste en partes del norte de Moss .
El hallazgo más grande, la masa principal , estaba hecha pedazos, ya que parte de ella se rompió al chocar contra una cerca. Pesaba casi 2 kilogramos (4,4 lb) . El peso total de todos los hallazgos superaba los 4 kilogramos (8,8 lb) . [ 1 ]
Clasificación y estudios científicos
Se han publicado varios artículos científicos sobre el estudio detallado del meteorito. El primer estudio preliminar de agosto de 2006 reveló que contiene numerosos cóndrulos pequeños , la mayoría de <0,2 mm y pequeños agregados ameboides de olivino (AOA) de <1 mm, así como pequeñas inclusiones de calcio y aluminio ( CAI ). También contiene granos aislados de olivino , troilita y kamacita en una matriz gris .
Se ha clasificado como condrita carbonácea de tipo CO3 - tipo Ornans . Su designación aceptada es CO3.6. Su tipo petrológico 3.6 significa que está ligeramente metamorfizada por calentamiento desde su estado original, pero más que la mayoría de las otras 5 caídas de CO3. Su pariente más cercano de estas caídas es Ornans, el espécimen tipo del grupo. Contiene solo alrededor del 0,25 por ciento de carbono , parte del cual se presenta como compuestos orgánicos . Típicamente benceno , tolueno , C2-alquilbenceno y trazas de bifenilo, benzonitrilo e hidrocarburos alifáticos.
La etapa de choque es S2.
Referencias
Véase también
- meteoritos condríticos
- Caída de meteoritos
- Campo de dispersión
- Se han encontrado meteoritos en Noruega.
- Ciencias planetarias
- 2006 en ciencia
- 2006 en Noruega