Radiocarbon Dating is used on organic objects only, so the fact that your whole example is based on inorganic rocks and radio carbon dating only suggests that you do not know with any detail or understanding the topic that you are discussing.
There are 2 calories in 1 cup of Unsweetened Iced Tea. Calorie breakdown: 0% fat, 97% carbs, 3% protein.
Drinking unsweetened iced tea may be good for your heart. The Linus Pauling Institute reports that epidemiological evidence indicates that consuming 24 ounces of black tea a day may decrease your risk of having a heart attack by 11 percent.