Impacts and the Early Earth

Exobiology: Laboratory tests of the impact related aspects of Panspermia.- Macromolecular organic materials in carbonaceous chondrites: A review of their sources and their role in the origin of life on the early earth.- Effects of atmospheric heating on infalling meteorites and micrometeorites: Relevance to conditions on the early earth.- Search for petrographic and geochemical evidence for the late heavy bombardment on earth in early archean rocks from Isua, Greenland.- The oldest impact deposits on earth — First confirmation of an extraterrestrial component.- Early archean spherule beds in the Barberton mountain land, South Africa: Impact or terrestrial origin?.- Particles in late archean carawine dolomite (Western Australia) resemble muong nong-type tektites.- Fossil micrometeorites from Finland — Basic features, scientific potential, and characteristics of the mesoproterozoic host rocks.- Impact diamonds as indicators of shock metamorphism in strongly-reworked Pre-Cambrian impactites.- Deeply exhumed impact structures: A case study of the Vredefort structure, South Africa.- Identification of ancient impact structures: Low-angle faults and related geological features of crater basements.- Basic remote sensing signatures of large, deeply eroded impact structures.- The terrestrial cratering rate over the last 125 million years.- Impact melting of carbonates from the Chicxulub crater.- The Gallejaur structure, Northern Sweden.- Neugrund structure — the newly discovered submarine early Cambrian impact crater.- Impact-induced replacement of plagioclase by K-feldspar in granitoids and amphibolites at the Kärdla Crater, Estonia.