Microtektite ejecta matrix in Thunder Bay
-Natural History Story-
Absolute Chaos in Thunder Bay area 400 miles (660 km) away from an asteroid impact crater in Sudbury 1.85 billion years ago. This 2m x 3m section of impact debrisite outcrop consists of a transported cobble of rusty iron formation, transported boulders of grey sedimentary rock and white dolomite from the local Proterozoic paleo-surface, all within a fine-grained dark-coloured matrix of microtektite ejecta.
www.lakesuperiorgeology.org/publications/proceedings.html
and find ILSG's 2012 annual publication, see papers 1 and 5 for Thunder Bay area sites
impact.ese.ic.ac.uk/ImpactEffects/
Earth Impact Effects Program is a profoundly disturbing university application that calculates the physical effects from any rock from space large enough to form a crater on Earth. One of the largest known space rocks of all time was the 1.85 Ga Sudbury impactor. It laid a stupefying "whupping" that was at least a continent wide upon ancient Earth.
en.wikipedia.org/wiki/Sudbury_Basin
Here's a link to my photo of the more well-known "dinosaur killer" Cretaceous-Tertiary boundary ash layer in Alberta.
www.flickr.com/photos/31856336@N03/5090097984/
Microtektite ejecta matrix in Thunder Bay
-Natural History Story-
Absolute Chaos in Thunder Bay area 400 miles (660 km) away from an asteroid impact crater in Sudbury 1.85 billion years ago. This 2m x 3m section of impact debrisite outcrop consists of a transported cobble of rusty iron formation, transported boulders of grey sedimentary rock and white dolomite from the local Proterozoic paleo-surface, all within a fine-grained dark-coloured matrix of microtektite ejecta.
www.lakesuperiorgeology.org/publications/proceedings.html
and find ILSG's 2012 annual publication, see papers 1 and 5 for Thunder Bay area sites
impact.ese.ic.ac.uk/ImpactEffects/
Earth Impact Effects Program is a profoundly disturbing university application that calculates the physical effects from any rock from space large enough to form a crater on Earth. One of the largest known space rocks of all time was the 1.85 Ga Sudbury impactor. It laid a stupefying "whupping" that was at least a continent wide upon ancient Earth.
en.wikipedia.org/wiki/Sudbury_Basin
Here's a link to my photo of the more well-known "dinosaur killer" Cretaceous-Tertiary boundary ash layer in Alberta.
www.flickr.com/photos/31856336@N03/5090097984/