https://padlet.com/305130/dlurffyec7yf Made with charisma en-us 2018-01-23 22:31:02 UTC 2026-02-26 02:56:11 UTC hello@padlet.com 305130 https://padlet.com/305130/dlurffyec7yf/wish/224038879 The principle of uniformitarianism states that the processes affecting Earth today are the same ones that affected it in the past.]]> 2018-01-23 22:31:50 UTC https://padlet.com/305130/dlurffyec7yf/wish/224038879 305130 https://padlet.com/305130/dlurffyec7yf/wish/224040043  the superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.]]> 2018-01-23 22:38:20 UTC https://padlet.com/305130/dlurffyec7yf/wish/224040043 305130 https://padlet.com/305130/dlurffyec7yf/wish/224040413 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 22:40:31 UTC https://padlet.com/305130/dlurffyec7yf/wish/224040413 305130 https://padlet.com/305130/dlurffyec7yf/wish/224040684 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 22:42:03 UTC https://padlet.com/305130/dlurffyec7yf/wish/224040684 305130 https://padlet.com/305130/dlurffyec7yf/wish/224040927 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 22:43:20 UTC https://padlet.com/305130/dlurffyec7yf/wish/224040927 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041154 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 22:44:42 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041154 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041241 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 22:45:11 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041241 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041398 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 22:46:04 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041398 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041574 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 22:46:59 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041574 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041843 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 22:48:43 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041843 305130 https://padlet.com/305130/dlurffyec7yf/wish/224041974 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. ... This evidence gives scientists the BEST observation of past plants and animals.]]> 2018-01-23 22:49:19 UTC https://padlet.com/305130/dlurffyec7yf/wish/224041974