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.
Marijuana in the 1960s contained THC levels approaching those of today's hemp. Reality: The THC levels in industrial hemp are so low that no one can get high from smoking it. Moreover, industrial hemp, while low in THC, is high in another kind of cannabinoid, CBD, which counteracts THC's psychoactivity.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.