New paper about Luizi impact structure, Congo
There is a new paper about the Luizi impact structure in the Congo.
Ferriere, L., F. G. R. Lubala, R. T. Osinski, and P. K. Kaseti,
2011, The newly confirmed Luizi impact structure,
Democratic Republic of Congo—Insights into central uplift
formation and post-impact erosion. Geology. vol. 39, no. 9,
pp. 851–854. doi:10.1130/G31990.1; 4
September 2011 Geology Highlights: new research posted 5 August
"Because of its preservation state and the shape of the
structure, with an inner ring, the Luizi crater also provides
insights into the formation of mid-sized impact craters on
Earth. Ferriere and colleagues estimate that the crater was
made by the collision of a kilometer-wide asteroid with a
speed of about 72,000 km per hour. However, based on
their investigations, they can only say that the crater is
younger than about 575 million years, the age of the rocks
that have been excavated."
Older articles are;
Collision With Huge Asteroid Caused 17 Kilometer
Diameter Crater Found in Congo, August 9, 2011
Huge Impact Crater Found in Remote Congo: Expedition
confirms a meteor hit central Africa millions of years ago.
by Victoria Jaggard, National Geographic News, March 8, 2011