Cubic Zirconiums and dinosaurs - geochronology marches on!

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Messages 21 - 23 of total 23 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
mechrist

Gym climber
South of Heaven
Mar 25, 2013 - 02:31pm PT
This formed the organic rich source rocks which created the oil in the middle east, which I believe is late Jurassic.

It is very interesting because there is an actual case of global climate change that was induced by CO2 released naturally by a huge volcanic event.

and we are releasing that stored carbon again... but over a period of hundreds of years, rather than tens of thousands.
tuolumne_tradster

Trad climber
Leading Edge of North American Plate
Mar 25, 2013 - 09:06pm PT
yup...the rate of increase in atmospheric CO2 during the last 100 years appears to be unprecedented in earth history
RP3

Big Wall climber
El Portal/Chapel Hill
Mar 26, 2013 - 09:59am PT
Here are some CL images of zircons from the Fish Canyon Tuff from SW Colorado (Schmitz and Bowring 2001). Tuff, of course, being my second favorite rock after granite.

It amazes me how many geoscientific applications there are for zircons. The field would be hurting if they didn't exist!

Credit: RP3
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