"Vredefort Dome, approximately 120 km south-west of Johannesburg, is a
representative part of a larger meteorite impact structure, or
astrobleme. Dating back 2,023 million years, it is the oldest astrobleme
yet found on Earth. With a radius of 190 km, it is also the largest and
the most deeply eroded. Vredefort Dome bears witness to the world’s
greatest known single energy release event, which had devastating global
effects including, according to some scientists, major evolutionary
changes. It provides critical evidence of the Earth’s geological history
and is crucial to understanding of the evolution of the planet. Despite
the importance of impact sites to the planet’s history, geological
activity on the Earth’s surface has led to the disappearance of evidence
from most of them, and Vredefort is the only example to provide a full
geological profile of an astrobleme below the crater floor." -http://whc.unesco.org
Hi Retha! Thank you so much for this really wonderful card!
I so much appreciate the love and effort on the art work you added on it!
I really need this today to brighten up my gloomy day.
I wish you a great great day too! ^-^
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