https://padlet.com/3045353/gg7msosjf79n Made with fortitude en-us 2018-01-23 16:31:06 UTC 2024-10-28 02:58:46 UTC hello@padlet.com 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223864619 Uniformitarianism is defined in the authoritative Glossary of Geology as "the fundamental principle or doctrine that geologic processes and natural laws now operating to modify the Earth's crust have acted in the same regular manner and with essentially the same intensity throughout geologic time, and that past]]> 2018-01-23 16:32:19 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223864619 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223865785 n. (geology) the principle that in a series of stratified sedimentary rocks the lowest stratum is the oldest. 2. n. the displacement of any point due to the superposition of wave systems is equal to the sum of the displacements of the individual waves at that point]]> 2018-01-23 16:34:00 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223865785 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223868346 The Principle of Original Horizontality states that layers of sediment are originally deposited horizontally under the action of gravity . It is a relative dating technique. The principle is important to the analysis of folded and tilted strata]]> 2018-01-23 16:37:37 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223868346 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223869338 The principle of lateral continuity states that layers of sediment initially extend laterally in all directions; in other words, they are laterally continuous. As a result, rocks that are otherwise similar, but are now separated by a valley or other erosional feature, can be assumed to be originally continuous]]> 2018-01-23 16:39:05 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223869338 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223870197 Cross-cutting relationships is a principle of geology that states that the geologic feature which cutsanother is the younger of the two features. It is a relative dating technique in geology]]> 2018-01-23 16:40:22 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223870197 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223871337 This is a restatement of Charles Lyell's original principle of inclusions and components from his 1830 to 1833 multi-volume Principles of Geology, which states that, with sedimentary rocks, if inclusions (or clasts) are found in a formation, then the inclusions must be older than the formation that contains them]]> 2018-01-23 16:41:54 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223871337 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223872052 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external cast can be made. Molds and casts are three dimensional and preserve the surface contours of the organism]]> 2018-01-23 16:43:03 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223872052 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223872966 In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals]]> 2018-01-23 16:44:37 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223872966 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223873532 A fossil trackway is a type of trace fossil, a trackway made by an organism. ... Marine organisms also made many ancient trackways (such as the trails of trilobites and eurypterids like Hibbertopterus). Some basic fossil trackway types: footprints. tail drags]]> 2018-01-23 16:45:33 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223873532 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223874839 A coprolite is fossilized feces. Coprolites are classified as trace fossils as opposed to body fossils, as they give evidence for the animal's behaviour (in this case, diet) rather than morphology. The name is derived from the Greek words κόπρος (kopros, meaning "dung") and λίθος (lithos, meaning "stone").]]> 2018-01-23 16:47:45 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223874839 3045353 https://padlet.com/3045353/gg7msosjf79n/wish/223875568 True form fossils are when the actual plant or animal IS the fossil; that is, the whole organism has been preserved. The soft tissues of the organism never decay. These fossils are made when a plant or animal gets trapped in ice, tar, or amber]]> 2018-01-23 16:48:53 UTC https://padlet.com/3045353/gg7msosjf79n/wish/223875568