Four-billion-year-old rocks yield clues about Earth's earliest crust

Four-billion-year-old rocks yield clues about Earth's earliest crust

Four-billion-year-old rocks yield clues about Earth's
earliest crust. ScienceDaily, University of Alberta
http://www.sciencedaily.com/releases/2014/05/140529112057.htm
News360 at http://news360.com/article/241073278 ; and

Ancient rocks yield clues about Earth's earliest crust
by Bryan Alary, University of Alberta, May 28, 2014
http://news.ualberta.ca/newsarticles/2014/may/ancient-rocks-yield-clues-about-earths-earliest-crust

Reimink, J. R., T. Chacko, R. A. Stern, L. M. Heaman,
2014, Earth’s earliest evolved crust generated in an
Iceland-like setting. Nature Geoscience. Published
online May 25, 2014 10.1038/ngeo2170
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2170.html

A related article is:
Lunar Rocks Are First Direct Evidence of Collision
That Formed Moon, National eographic, June 6, 2014.
http://news.nationalgeographic.com/news/2014/06/140605-earth-moon-theia-evidence-space-science/

Body that formed the Moon came from a different
neighborhood. (The body that smacked into Earth
has a distinctive elemental signature.) Ars Technica
http://arstechnica.com/science/2014/06/body-that-formed-the-moon-came-from-a-different-neighborhood/

Herwartz, D., A. Pack, B. Friedrichs, and A. Bischoff,
2014, Identification of the giant impactor Theia in lunar
rocks. Science. vol. 344, no. 6188, pp. 1146-1150
DOI: 10.1126/science.1251117
http://www.sciencemag.org/content/344/6188/1146

yours,

Paul H.