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 is actually stone that looks exactly like wood. Petrified wood is actually stone that looks exactly like wood. The detail in the stones is amazing-it looks just like wood but is much stronger and heavier. You can even see the tree rings.Petrified wood literally means wood turned into stone.The word petrify comes from the Greek word petro or rock - Petrify means to change organic matter into a stony concretion by encrusting or replacing its original substance with a calcareous, siliceous, or other mineral deposits.ou can even see the tree rings. Petrified wood literally means wood turned into stone. The word petrify comes from the Greek word petro or rock - Petrify means to change organic matter into a stony concretion by encrusting or replacing its original substance with a calcareous, siliceous, or other mineral deposits.
Petrified Forest National Park [1] is a United States National Park that is in eastern Arizona, in the Southwest region of the United States. The park takes its name from the remnants of ancient trees which have been transformed into brilliantly colored minerals through a series of geological processes.etrified Forest National Park features one of the world's largest and most colorful concentrations of petrified wood, the multi-hued badlands of the Chinle Formation known as the Painted Desert, historic structures, archeological sites, and displays of 225 million year old fossils.