نتایج جستجو برای: tufa
تعداد نتایج: 222 فیلتر نتایج به سال:
Understanding carbon dioxide (CO2) reservoir to surface migration is crucial successful capture and sequestration approaches; especially fault/reservoir interactions under injection pressure. Through seismic imaging, we explore regolith shallow stratigraphy across the Little Grand Wash fault. The presence of natural CO2 seeps, travertine tufa deposits confirm modern ancient fault-controlled lea...
This study, focused on the well-exposed terrace deposits of Guadalaviar and Turia rivers associated slopes, provides a better understanding genetic connection between river-terrace sediments slope accumulations in setting influenced by temperate to cold (extraglacial) climates: Sierra de Albarracín Alfambra–Teruel depression (Iberian Chain, eastern Spain). The system comprises seven levels, Qt1...
Gothic arch calcite, a specific crystallographic variety of calcite known from some hot springs and tufa streams, has been newly recognized in the Koněprusy Caves. The gothic-arch occurs on exteriors exotic coralloid speleothems where it coexists with scalenohedral (dogtooth) spar crystals. crystals exhibit microscopic ultrastructural features including deeply eroded topography, etch pits, spik...
0022-1694/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.jhydrol.2012.03.015 ⇑ Corresponding author at: Department of Geology a University, 98 Beechurst Ave., Morgantown, WV 26506 fax: +1 304 293 6522. E-mail addresses: [email protected] [email protected] (H.M. Edenborn). Dissolved CO2 in groundwater is frequently supersaturated relative to its equilibrium with at...
Isernia La Pineta (south-central Italy, Molise) is one of the most important archaeological localities of the Middle Pleistocene in Western Europe. It is an extensive open-air site with abundant lithic industry and faunal remains distributed across four stratified archaeosurfaces that have been found in two sectors of the excavation (3c, 3a, 3s10 in sect. I; 3a in sect. II). The prehistoric att...
In [I], we have reported the construction and characterization of two hybrid ColEl plasmids, pTUB1 and pTUB2, in which the 8.9 kilobases (kb) (18.6% h-unit) EcoRI fragment derived from transducing phage XrifdlS was inserted in two different orientations into a ColEl derivative plasmid RSF2124. The 8.9 kb fragment contained a part of rrnB, genes for 4 tRNAs (glyT, tyrU, thrT, and thrum), tujB, a...
We have identified ribosomal protein genes carried by several EroRI DNA fragments which were originally derived from XxpcI or Xfctx2 transducing phages and then cloned into Charon 3 and Charon 4 vector phages (see the preceding paper (Williams, B. G., Blattner, F. It., Jaskunas, S. R., and Nomura, M. (1977) J. Rid. Chem. 252, 7344-7354)). Ultraviolet (LJV)-irradiated E.srheri~hia coli cells wer...
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