There are two possibilities I can think of. One, is that someone wants to subpoena you for a deposition. Are you involved in some sort of law suit? The second possibility is that you have already been subpoenaed and failed to show up. If that is the case, and depending on the state you are in, it is possible the lawyer taking the deposition went to the court to ask for an order to enforce your attendance. The best thing to do is call the law firm back and ask for details. For instance, who subpoeaned you? In what case? Who are the parties? What is the case number? In which court was the case filed? If you are not involved in any kind of lawsuit or are not a witness in some civil or criminal case, then is likely not genuine.
Do not however give any personal information such as SSN, drivers license number, address, etc. Once you get the information, call the clerk of the court, give them the case number and ask them to advise you what the "deposition warrant" is and what you can do to get it cleared up.
If you know an attorney, you could also run it by him/her for advice and assistance.
depositional
A deferred junction is typically associated with depositional landforms. It forms when sediment is deposited at the intersection of two rivers or streams, creating a more stable junction point.
it is erosional
Eskers were formed by depositional processes. They are long, winding ridges of sand and gravel that were deposited by meltwater streams flowing in tunnels beneath glaciers during the last Ice Age.
depositional :)
the erosion zone
both
a depositional mountain
A swamp
Sedimentary depositional environment
Erosional landforms dominate an area where the ice flows to, while depositional landforms are found where ice flows from.
floodplain