https://padlet.com/3044461/lquvd8mtkvgg en-us 2018-01-16 16:35:58 UTC 2023-04-27 12:30:42 UTC hello@padlet.com 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221777621 The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time.]]> 2018-01-16 16:38:07 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221777621 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221778098 The geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock where formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-01-16 16:39:08 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221778098 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221778483 An idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.]]> 2018-01-16 16:39:57 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221778483 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221780688 A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age]]> 2018-01-16 16:44:47 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221780688 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221781515 The history of Earth concerns the development of planet Earth from its formation to the present day]]> 2018-01-16 16:46:22 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221781515 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221782721 the time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-16 16:48:43 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221782721 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221783518

a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.

]]> 2018-01-16 16:50:35 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221783518 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221784578 Another term for carbon dating.]]> 2018-01-16 16:53:02 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221784578 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221786606 The spontaneous transformation of an unstable atomic nucleus into a lighter one, in which radiation is released in the form of alpha particles, beta particles, gamma rays, and other particles.]]> 2018-01-16 16:56:58 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221786606 3044461 https://padlet.com/3044461/lquvd8mtkvgg/wish/221787330 This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.]]> 2018-01-16 16:58:31 UTC https://padlet.com/3044461/lquvd8mtkvgg/wish/221787330