[meteorite-list] Where have all the craters gone?

[Paul H.]

Where have all the craters gone? Geological Society 
of America, ScienceDaily, May 27, 2014
http://www.sciencedaily.com/releases/2014/05/140527154715.htm

The paper is:

Johnson, B. C., and T. J. Bowling, 2014, Where have 
all the craters gone? Earth's bombardment history and 
the expected terrestrial cratering record. Geology.
First published online May 22, 2014, doi: 10.1130/G35754.1
http://geology.gsapubs.org/content/early/2014/05/21/G35754.1

An older and related article is:

Tiny 'spherules' reveal details about Earth's asteroid 
impacts, Purdue University, April 25, 2012
http://www.purdue.edu/newsroom/research/2012/120425MeloshImpacts.html
http://www.sciencedaily.com/releases/2012/04/120425140316.htm

The paper is:

Johnson, B. C., and H. J. Melosh, 2012, Impact 
spherules as a record of an ancient heavy bombardment 
of Earth. Nature. vol. 485, no. 7396, pp. 75–77.
http://www.nature.com/nature/journal/v485/n7396/full/nature10982.html

Yours,

Paul H.