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- Ordovician_meteor_event abstract "The Ordovician meteor event is a proposed shower of L chondrite meteors that occurred during the Middle Ordovician period, roughly 470 million years ago. This theory was proposed by Swiss and Swedish researchers based on the comparatively tight age clustering of L chondrite grains in sediments in southern Sweden. They proposed that a large asteroid transferred directly into a resonant orbit with Jupiter, which shifted its orbit to intercept Earth.In addition to the northern European evidence, there is circumstantial evidence that several Middle Ordovician meteors fell roughly simultaneously 469 million years ago in a line across North America, including the Ames crater in Oklahoma, the Decorah crater in Iowa, the Slate Islands crater in Lake Superior, and the Rock Elm crater in Wisconsin.".
- Ordovician_meteor_event thumbnail Middle_Ordovician_craters.jpg?width=300.
- Ordovician_meteor_event wikiPageID "38606615".
- Ordovician_meteor_event wikiPageRevisionID "599826438".
- Ordovician_meteor_event hasPhotoCollection Ordovician_meteor_event.
- Ordovician_meteor_event subject Category:Impact_craters_of_the_United_States.
- Ordovician_meteor_event subject Category:Ordovician_impact_craters.
- Ordovician_meteor_event comment "The Ordovician meteor event is a proposed shower of L chondrite meteors that occurred during the Middle Ordovician period, roughly 470 million years ago. This theory was proposed by Swiss and Swedish researchers based on the comparatively tight age clustering of L chondrite grains in sediments in southern Sweden.".
- Ordovician_meteor_event label "Ordovician meteor event".
- Ordovician_meteor_event sameAs m.0r8kw_w.
- Ordovician_meteor_event sameAs Q7100912.
- Ordovician_meteor_event sameAs Q7100912.
- Ordovician_meteor_event wasDerivedFrom Ordovician_meteor_event?oldid=599826438.
- Ordovician_meteor_event depiction Middle_Ordovician_craters.jpg.
- Ordovician_meteor_event isPrimaryTopicOf Ordovician_meteor_event.