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.
Most computer problems are caused by software, not by hardware. In many cases, the error is only in memory. In this instance, the best solution is to turn the computer off, leave it off for at least thirty seconds, then turn it back on. This erases all of the memory so that you can restart the computer with a clean slate.