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.
If you shut down the computer properly, no. The danger is basically that you stop writing data to the drive halfway through. If your tell the computer to switch off, it will finish what it's doing first (I think. May be exceptions). If you turned off the computer by unplugging it, then yes that would be bad.