#brecciation

http://scitechnews.co.uk/space-exploration/meteorite-may-represent-bulk-background-of-mars-battered-crust/

Meteorite may represent 'bulk background' of Mars' battered crust

NWA 7034, a meteorite found a few years ago in the Moroccan desert, is like no other rock ever found on Earth.

It’s been shown to be a 4.4 billion-year-old chunk of the Martian crust, and according to a new analysis, rocks just like it may cover vast swaths of Mars.

View Original Article

detail (minus border rule, etc) of Plate xxiv, Jaspilite from Grand Rapids Mine, Negaunee illustrating Charles Richard Van Hise (1857-1918 *) and William Shirley Bayley (1861-1943). The Marquette iron-bearing district of Michigan, with atlas. Including a chapter on the Republic Trough, by Henry Lloyd Smith. Department of the Interior. Monographs of the U.S. Geological Survey. XXVIII. 1897. * The "two emphatic intrusions" found in the monochrome Google scan (of copy at Stanford University) were evidently a tear in the, or loose scrap of, paper. This poor snapshot of an original copy (at Harvard's Cabot Science Library) can only hint at the beauty — uniformly so — of the plates in this volume. The two presentations are incomparable and striking in their respective ways.