tjärdel
Tjärdel is a Swedish term that translates to "tar deposit" or "tar pool" in English. It refers to a natural accumulation of tar, a thick, black, flammable liquid, often found in areas where geological formations containing organic matter have undergone pyrolysis or destructive distillation. These formations are typically ancient peat bogs, coal seams, or oil shale deposits that have been subjected to intense heat over geological timescales, either through volcanic activity or deep burial. The process breaks down the organic material, releasing volatile hydrocarbons that condense and accumulate as tar.
Tjärdel can vary greatly in size, from small seepages to extensive underground reservoirs. The tar itself can