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.
Around 120 depending on the brand and sugar content In an 8oz glass of sweet tea by Red Diamond there are 70 calories 110 Calories per 8 fl oz in Lipton Pureleaf Glass Bottle Extra Sweet Iced Tea Sweet tea has about 55-65 calories per 8 ounces, depending on how much sugar you add.