需要多长时间,形成琥珀吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t12:26:34z //www.hoelymoley.com/feeds/question/2296 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/2296 10 需要多长时间,形成琥珀吗? 多瑙河的水手 //www.hoelymoley.com/users/77 2014 - 07 - 28 - t09:50:58z 2020 - 11 - 29 - t16:02:04z < p >琥珀的形成需要多长时间?有近似的最小时间需要树脂转化为琥珀色的最有利条件?< / p > < p >可以生产琥珀在人类寿命的时间尺度? < / p > //www.hoelymoley.com/questions/2296/-/2372 # 2372 5 答案由plannapus多长时间形成琥珀吗? plannapus //www.hoelymoley.com/users/87 2014 - 08 - 15 - t10:06:04z 2014 - 09 - 24 - t07:22:39z

In Schmidt & Dilcher 2007, the authors were interested specifically on how amber can trap aquatic organism, so this is a specific, out-of-the-norm case study but it might give you at least on order of magnitude. Here is an extract:

Within the first day or two after initial contact with water, all three resin fractions were traps for limnetic organisms. The resinous film at the surface then dried out and broke into small centimeter-sized fragments, so no long-term preservation can be expected for this exudate. The pieces of resin hanging at the water surface became more and more solid within a few days because of air contact at their upper surface. After 1 week, these pieces were nearly solidified (Fig. 1 D).

And later:

In contrast, the large resin bodies on the ground did not solidify as long as they were covered with water. But this resin was also initially a trap for microorganisms before a thin hardened skin developed at the resin surface after 1 or 2 days in the water, which prevented tiny organisms from getting stuck. Nonetheless, the resin remained liquid inside, and therefore large arthropods that were able to break through this skin could become entrapped over a couple of weeks. [...] The resin solidified when exposed to the air in the laboratory or by decreasing water level in the swamp during the summer.

So the polymerization process to go from resin to solidified resin (copal) takes weeks. At that point, the system is already closed meaning the contained organisms correspond to that time interval.

The next step (amberification) consists of further polymerization as well as oxydation and can take several million years (Poinar 1992). However the minimum time needed for this process is unknown.

Reference:
Poinar Jr, 1992. Life in amber. Stanford University Press.
Schmidt A. R. & Dilcher D. L., 2007. Aquatic organisms as amber inclusions and examples from a modern swamp forest. PNAS, 104(42): 16581-16585.

Baidu
map