L Paul Knauth
Affiliation: Arizona State University
- Impact origin of sediments at the Opportunity landing site on MarsL Paul Knauth
Department of Geological Sciences, Arizona State University, Box 871404, Tempe, Arizona 85287 1404, USA
Nature 438:1123-8. 2005..Layered sequences observed elsewhere on heavily cratered Mars and attributed to wind, water or volcanism may well have formed similarly. If so, the search for past life on Mars should be reassessed accordingly...
- The late Precambrian greening of the EarthL Paul Knauth
School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287 1404, USA
Nature 460:728-32. 2009..As a result, biotically enhanced weathering generated carbon-bearing soils on a large scale and their detrital sedimentation sequestered carbon. This facilitated a rise in O(2) necessary for the expansion of multicellular life...
- Life in extreme environments: survival strategy of the endolithic desert lichen Verrucaria rubrocinctaLaurence A J Garvie
School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 1404, USA
Naturwissenschaften 95:705-12. 2008..Biodeterioration of the caliche concomitant with biomineralization of a protective surface coating of micrite results in the distinctive anatomy of V. rubrocincta...