15

The sequence of events you describe has never happened, for several reasons. As Sabre Tooth mentions in the comments, vehicle emissions have a negligible effect on stratospheric ozone. (Note that while vehicle emissions can lead to ozone production at ground level, the ozone layer is several kilometres above the Earth's surface and isn't really affected by ...


6

I will try to plainly answer your question about an artificial radionuclide production/diffusion resulting from human activities, without getting into the discussion of deciding if this is geochronologically relevant or not. I would point Figure 1 of this paper which indicate the average tritium (3H) levels in the northern hemisphere between 1945 and 2008. ...


6

Certain anthropogenic radionuclides have pragmatic advantages as markers for the start of the anthropocene. The advantage of radionuclides over anthropogenic stable nuclides is that the primordial production of all but a few radionuclides has decayed away. Thus natural background levels are below detection by sensitive analytical methods except in a few ...


5

The chapter on the Anthropocene (Zalasiewicz et al., 2012) of "The Geological Timescale 2012" quote 3 papers that used artificial radionucleotides as stratigraphic markers: Schwikowski (2004), Turetsky et al. (2004) and Marshall et al. (2007). The first one (Schwikowski, 2004) used them in the context of dating ice cores from Alpine glaciers and the second ...


4

Some simplifying assumptions This is quite a broad and complex question to answer, so I'm going to simplify it shamelessly to make it a little more answerable. Firstly, there are a huge number of different plastics with a huge variety of physical characteristics. You mention that you're interested in ‘the most common type of plastics’, so I'm going to ...


4

Of course it happens elsewhere! However, I'm not sure there's a specific term, generally. Even in the "montaintop removal" country of Appalachia, there is no more prosaic term for the practice other than MTR. Too bad! It surely deserves a better term! And...despite the complete excising of an entire mountain within the Oquirh mountains, even the Salt Lake ...


3

There are various charts but not exactly what you want. This one combines burning, industry and cement but shows land sources and sinks separately: CarbonBrief, Le Quéré, C. et al. (2016)


2

It happened and it is still happening: In the USA, there's the Bingham Canyon copper mine in Utah. In Australia, there's the Mount Whaleback and Mount Tom Price iron ore mines in Western Australia and former mines like Iron Knob and Iron Monarch in the Middleback Ranges of South Australia, near Whyalla. In West Papuan province of Indonesia there's the ...


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