منابع مشابه
Subsurface microbial diversity in deep-granitic-fracture water in Colorado.
A microbial community analysis using 16S rRNA gene sequencing was performed on borehole water and a granite rock core from Henderson Mine, a >1,000-meter-deep molybdenum mine near Empire, CO. Chemical analysis of borehole water at two separate depths (1,044 m and 1,004 m below the mine entrance) suggests that a sharp chemical gradient exists, likely from the mixing of two distinct subsurface fl...
متن کاملMesonorms of granitic rock analyses
SINCE Cross, Iddings, Pirsson, and Washington 09o3) first published their system of deriving normative minerals from chemical analyses, the CIPW norm has been successfully used to identify, compare, and classify trends in igneous rocks with similar or differing mineral compositions. The norm has been used for metamorphic rocks and rocks of somewhat uncertain mode of origin (Bowes, ~967). Variou...
متن کاملMicrobial life in deep subseafloor coal beds.
Deep beneath the seafloor, microbial communities thrive on the leftovers of organic material that in the past settled down from the surface layers of the ocean to the sediment. As the organic matter was buried deeper and deeper over geological time it became increasingly recalcitrant to microbial degradation. Microbial cells that still persist in these ancient deposits appear to survive at the ...
متن کاملMineralogical and Morphological Features of Fractured Granitic Rock Tested under Water-rock Interaction
Chemical analysis of the Water-rock interaction showed that hydrothermal altered rock contains large amount of fluoride. Considering that alteration has mainly occurred at the fractures’ cleavages, the aim of this paper is to investigate the change of the mineral composition between the cleavages and other parts of the granite surfaces. Scanning electron microscope with energy-dispersive spectr...
متن کاملThriving Microbial Life in Ancient Groundwater Deep Inside Earth’s Crust
Did you know that the earth beneath your feet is teeming with life? Imagine yourself standing outside. If you started digging, at some point beneath the soil you would eventually hit hard rock—that is the bedrock forming the Earth’s crust. Even this seemingly solid material has cracks and pores that contain groundwater (water that is held in the ground), and where there is water, there can be l...
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ژورنال
عنوان ژورنال: Episodes
سال: 1997
ISSN: 0705-3797,2586-1298
DOI: 10.18814/epiiugs/1997/v20i1/002