Maurette, M.2; Hammer, C.2; Brownlee, D. E.2; Reeh, Niels3; Thomsen, H. H.2
1 National Space Institute, Technical University of Denmark2 unknown3 Department of Civil Engineering, Technical University of Denmark
A concentration process occurring in the melt zone of the Greenland ice cap has produced the richest known deposit of cosmic dust on the surface of the earth. Extraterrestrial particles collected from this region are well preserved and are collectable in large quantities. The collected particles are generally identical to cosmic spheres found on the ocean floor, but a pure glass type was discovered that has not been seen in deep-sea samples. Iron-rich spheres are conspicuously rare in the collected material.