Slow Heart Beat (Bradycardia) An abnormally slow sinus heart rate is called the âsick sinus syndromeâ and, if severe, results in symptoms of fatigue. In some such cases a permanent pacemaker is needed to be implanted to generate a normal heart rate. Many people with sick sinus syndrome also develop atrial fibrillation.
Petrified wood (from the Greek root petro meaning rock or stone; literally wood turned into stone) is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization.lements such as manganese, iron, and copper in the water/mud during the petrification process give petrified wood a variety of color ranges. Pure quartz crystals are colorless, but when contaminants are added to the process the crystals take on a yellow, red, or other tint.
This Site Might Help You. RE: How much is my petrified wood worth? I have a piece of petrified wood that is about 18 inches long and in log form. The inside is not visible and I have no idea of it&#39;s worth.I was wondering how to get it appraised.Any ideas would be most welcome. have a piece of petrified wood that is about 18 inches long and in log form. The inside is not visible and I have no idea of it&#39;s worth. I was wondering how to get it appraised. Any ideas would be most welcome.