The pink areas are new deposits of volcanic ash; the orange plug is older material. (newscientist.com)
Rather, there are known supplies of oil, coal and other natural resources whose quantities tend to expand as their prices rise, making it more profitable to explore for new deposits. (religion-online.org)
If you extend it for five years after that, you will still receive the rate of interest and start making new deposits and enjoy tax benefit. (policybazaar.com)