منابع مشابه
Image analysis for quantification of bacterial rock weathering.
A fast, quantitative image analysis technique was developed to assess potential rock weathering by bacteria. The technique is based on reduction in the surface area of rock particles and counting the relative increase in the number of small particles in ground rock slurries. This was done by recording changes in ground rock samples with an electronic image analyzing process. The slurries were p...
متن کاملRock and Mineral Weathering Experiments under Model Venus Conditions
Introduction. Chemical analyses of rock and rego-lith at the Venera and Vega landing sites [1] suggest that Venus' surface consists of basaltic rocks with variable amounts of S, either as a primary constituent or as a secondary product of atmospheric interactions. Starting with these chemistries, models of Venus mineralogy predict that the surface is composed of primary basaltic minerals, unrea...
متن کاملEffects of Weathering on Tir Spectra and Rock Classification
1376. [14] Michalski, J. R. et al. (2005), LPSC XXXVI, Abstract #1188. [15] Hamilton and Lucey (2005), LPSC XXXVI, Abstract #1272. [16] Christensen et al. (2000), JGR, 105, 9735-9739. [17] Reyes, D. P. (1994), M.S. Thesis, Arizona State University, Tempe, AZ. Figure 2: Variation of components between the weathered and cut surfaces of the granitic samples. Plagioclase feldspar and quartz values ...
متن کاملDraft Genome Sequence of Rhizobium sp. H41, a Rock-Weathering Bacterium from a Weathered Rock Surface
Rhizobium sp. H41 isolated from weathered tuff can weather tuff and release Fe, Si, and Al from the rock under nutrient-poor conditions. Here, we report the draft genome sequence of strain H41, which may facilitate a better understanding of the molecular mechanism involved in rock weathering by the bacterium.
متن کاملMicrobial populations and activities in the rhizoplane of rock-weathering desert plants. I. Root colonization and weathering of igneous rocks.
Dense layers of bacteria and fungi in the rhizoplane of three species of cactus (Pachycereus pringlei, Stenocereus thurberi, Opuntia cholla) and a wild fig tree (Ficus palmeri) growing in rocks devoid of soil were revealed by bright-field and fluorescence microscopy and field emission scanning electron microscopy. These desert plants are responsible for rock weathering in an ancient lava flow a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geological Magazine
سال: 1899
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s001675680014258x