Beltanelloides sorichevae Sokolov, 1965 is one of these simple forms. This taxon was originally described from sediments of the Upper Vendian of the European Platform, in the White Sea region. Organisms were typically preserved as negative, rounded impressions with thin, irregular concentric wrinkles on the periphery of an organic film. Remains lay in beds of massive, structureless clay. Such i...

A study was undertaken to determine why bacteria could penetrate lengths of consolidated sandstone (Berea) faster when the sandstone was sterilized by autoclaving than when dry heat (150 degrees C, 3 h) was used. Changes in permeability, porosity, and pore entrance size of the rock as a result of autoclaving were not sufficient to explain the differences in penetration times observed, but elect...

ABSTRACT: Frequent occurrence of seismic activities has drawn attention of various researchers, cutting across science and engineering discipline. The domain of earthquake geotechnical engineering has extended from determination of attenuation of seismic wave to providing suitable foundation under liquefied and unliquefied soil conditions. The seismic data can be fully intrepreated by use of se...

A new six-channel aircraft multispectral scanner has been developed to exploit mineral signature information at wavelengths between 8 and 12 micrometers. Preliminary results show that igneous rock units can be identified from their free silica content, and that carbonate as well as clay-bearing units are readily separable on the digitally processed images.

 Mineralogical Association of Canada Short Course 43, Winnipeg MB, May 2013, p. xx-xx INTRODUCTION The direct disposal of spent nuclear fuel in geologic repositories, built several hundred metres underground, has been under consideration internationally for 20 to 30 years. Various geologic formations are being, or have been, studied including tuff rock, salt domes, sedimentary clay deposits an...

the petroleum potential of the seyahou (ordovician) and sarchahan (lower silurian) formations in northern bandar abbas has not been investigated sufficiently. these sediments crop out as thinly laminated shales and are about 100 meters thick. a number of thirty-five selected samples were subjected to rock-eval pyrolysis followed by transmitted, reflected and uv light microscopy together with cl...

tashtab mountain is located 25 km from the city of khur in northeastern isfahan province. several bentonite mines formed in this area as a result of the eocene volcanic alteration. these mines are classified as the khur bentonite horizon. studies on trace elements in parent rock and clays show that the studied bentonites formed from andesite-basaltic parent rocks. the xrd analysis shows that st...