Taphonomy is the study of the fate of the remains of organisms after they die. The term taphonomy, (from the Greek taphos meaning burial, and nomos meaning law), was introduced to palaeontology in 1940 by Russian scientist, Ivan Efremov, to describe the study of the transition of remains, parts, or products of organisms, from the biosphere, to the lithosphere, i.e. the creation of fossil assemblages, (e.g. see Shipman 1981 p.5-6, Greenwood 1991, Lyman 1994).
Taphonomists study such phenomena as biostratinomy, decomposition, diagenesis, and epibiont encrustation.
The primary motivation behind the study of taphonomy is to better understand biases present in the fossil record. Fossils are ubiquitous in sedimentary rocks, yet paleontologists cannot draw the most accurate conclusions about the lives and ecology of the fossilized organisms without knowing about the processes involved in their fossilization. For example, if a fossil assemblage contains more of one type of fossil than another, one can either infer that that organism was present in greater numbers, or that its remains are more resistant to decomposition.
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Time dilation experimentAn experiment using civilian aircraft and atomic clocks to provide evidence for Einsteins time dilation theory. Source- http://staff.jccc.net/wkoch/Astronomy... Time dilation applies to satellites that orbit the earth as they move forward in time by 0.01 seconds per year. This may not seem much but the clocks on the satellites need to take this into account to stay in sinc with the clocks on earth. The ISS, which has been orbiting the earth for 6 years at 27,685 km/h has moved a total of 0.06 seconds into the future. |