I just looked at the September 2016 SCIENTIFIC AMERICAN around page 32 and found an article on "What mark will we leave on the Planet". It is part of nine or so related articles. One of the ideas discussed is the "Anthropocene" age. A Dutch researcher (Paul Crutzen) in year 2000, decided we were not part of the 11.700 year old Holocene age, but a new age-- The Antropocene Age.
The question about this is have we really entered a new geologic age. The author (Jan Zalasiewicz) thinks we have changed earth enough to warrant calling it a new age. He thinks that evidence of this age will still be around thousands of years from now. He views metals like Aluminum which exists in pure form enough to cover the world with aluminum foil as the old "rocks" which will be found. Other rocks will be the half a trillion tons of concrete. Humans now shift more sediment than natural forces such as rivers and wind do.
Radioactive particles will be around for thousands of years as a result of nuclear bomb use and tests. The radioactive layer is an abrupt Anthropocene signature. All this and things like metal in teeth, skeletons with artificial metal hips will be pushed up millions of years from now and some newly minted cliff will reveal a distinctive Anthropocene layer. Despite this idea, the concept of an Anthropocene Age is not settled. "The jury is still out."
I have left out a lot in this short summary, but the article and the rest of the magazine are worth reading.
***Stay tuned even if your trash and work will not leave evidence around for millions of years.-- Doug Wiken