3 ms·
Yes, it will definitely be possible via hundreds of different pathways, some of which they thought of in the paper and others that they didn't. > The Anthropoc
by rmtech 6y ago
Yes, it will definitely be possible via hundreds of different pathways, some of which they thought of in the paper and others that they didn't.
> The Anthropocene layer in ocean sediment will be abrupt and multi-variate, consisting of seemingly concurrent specific peaks in multiple geochemical proxies, biomarkers, elemental composition, and mineralogy. It will likely demarcate a clear transition of faunal taxa prior to the event compared to afterwards. Most of the individual markers will not be unique in the context of Earth history, but the combination of tracers may be. However, we speculate that some specific tracers that would be unique, specifically persistent synthetic molecules, plastics, and (potentially) very long-lived radioactive fallout in the event of nuclear catastrophe.
One that they didn't mention was our artifacts on the moon which will last 100 million years or so. Geostationary and HEO satellites will stay for a while but I'm not exactly sure how long.
However if you wait 50 million years or so, most of the stuff on earth won't be obvious and you would need to check very carefully.
- dvdkhlng 6y ago> One that they didn't mention was our artifacts on the moon which will last 100 million years or so. Geostationary and HEO satellites will stay for a while but I'm not exactly sure how long. Erosion due to micrometeorites erodes the surface of the moon at 1mm per 1e6 years [1]. I wonder whether erosion of human-made moon artifacts will commence at a comparable rate. Note that the hull thickness of the apollo lander is just 0.3 mm [2]. Part of the propulsion system, tanks etc. would be the components to last longest, butt 100 million years may be quite a stretch. [1] https://mauricejscollins.wixsite.com/moonscience https://mauricejscollins.wixsite.com/moonscience [2] https://space.stackexchange.com/questions/924/what-would-have-happened-if-the-skin-of-an-apollo-lunar-module-was-ruptured https://space.stackexchange.com/questions/924/what-would-hav...
- rmtech 6y agoWell, 100mm is not that much, I suspect there is something in all that stuff that is at least that thick. Maybe the bags of excrement? That would be pretty funny.