Hornfels is a fine-grained nonfoliated metamorphic rock with no specific composition. It is produced by contact metamorphism. Hornfels is a rock that was baked while near a heat source such as a magma chamber, sill or dike. The specimen shown above is about two inches (five centimeters) across.
Industrial Hemp Facts. Industrial hemp is a variety of Cannabis sativa and is of the same plant species as marijuana. However, hemp is genetically different and distinguished by its use and chemical makeup. Industrial hemp refers to cannabis varieties that are primarily grown as an agricultural crop.
Cannabis strains of the type used for industrial purposes have relatively high levels of CBD versus THC. Drug strains are high in THC and low to intermediate in CBD [12] . Smoking hemp, high in CBD and very low in THC, actually has the effect of preventing the marijuana high [13] .Even when the amount of THC in a sample is as high as 2 percent, the psychological high is blocked by as little as 2 percent CBD [14] .OMMERCIAL PRODUCTION OF INDUSTRIAL HEMP IN CANADA. Industrial hemp can now be grown in Canada effective March 12, 1998, under authorization from Health Canada. Industrial Hemp is defined as the plants and plant parts of the Cannabis plant, whose leaves and flowering heads do not contain more than 0.3 percent THC.