More recently introduced terms such as 'annually laminated' are synonymous with varve. Of the many rhythmites in the geological record, varves are one of the most important and illuminating in studies of past climate change. Varves are amongst the smallest-scale events recognised in stratigraphy.
Computer Randomly Shuts Down: Possible Reasons. If your laptop or computer shuts down by itself randomly, then there can be many possible reasons for it. Knowing the problems due to which your PC keeps shutting down frequently will help you deal with them accordingly. Reason #1: Virus Infiltration.
The following are some of the reasons why your PC keeps shutting down randomly. Computer Virus. The most common cause of computer keeps shutting down is a computer virus. This virus causes unexpected changes in your computer and makes vital changes in your computer operating system. This interference from the virus causes your PC to shut down automatically.