https://padlet.com/304892/avf8plh9amzi Sedimentary Principals and Fossils en-us 2018-01-23 17:35:46 UTC 2026-01-18 08:59:23 UTC hello@padlet.com 304892 https://padlet.com/304892/avf8plh9amzi/wish/223904414 Uniformitarianism is a geological doctrine. It states that current geologic processes, occurring at the same rates observed today, in the same manner, account for all of Earth's geological features]]> 2018-01-23 17:38:01 UTC https://padlet.com/304892/avf8plh9amzi/wish/223904414 304892 https://padlet.com/304892/avf8plh9amzi/wish/223905019 In physics and systems theory, 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 17:39:00 UTC https://padlet.com/304892/avf8plh9amzi/wish/223905019 304892 https://padlet.com/304892/avf8plh9amzi/wish/223905309 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 17:39:33 UTC https://padlet.com/304892/avf8plh9amzi/wish/223905309 304892 https://padlet.com/304892/avf8plh9amzi/wish/223905610 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 17:40:05 UTC https://padlet.com/304892/avf8plh9amzi/wish/223905610 304892 https://padlet.com/304892/avf8plh9amzi/wish/223905921 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 17:40:34 UTC https://padlet.com/304892/avf8plh9amzi/wish/223905921 304892 https://padlet.com/304892/avf8plh9amzi/wish/223906080 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 17:40:49 UTC https://padlet.com/304892/avf8plh9amzi/wish/223906080 304892 https://padlet.com/304892/avf8plh9amzi/wish/223906775 Shells, bone, and wood often form as molds or casts. Some trace fossils (ichnofossils), such as tracks and burrows can form as casts or molds. Tracks andburrows can provide clues to the behavior and biomechanics of an organism while it was alive. Concretions often encapsulate a fossil mold and cast.]]> 2018-01-23 17:41:54 UTC https://padlet.com/304892/avf8plh9amzi/wish/223906775 304892 https://padlet.com/304892/avf8plh9amzi/wish/223907281 A petrified fossil is different from other fossils such as resin fossils or permineralized fossils because the original material of the organism is still intact in resin fossils or permineralized fossils. ]]> 2018-01-23 17:42:47 UTC https://padlet.com/304892/avf8plh9amzi/wish/223907281 304892 https://padlet.com/304892/avf8plh9amzi/wish/223907717 A fossil trackway is a type of trace fossil, a trackway made by an organism. Many fossil trackways were made by dinosaurs, early tetrapods, and other quadrupeds and bipeds on land. Marine organisms also made many ancient trackways (such as the trails of trilobites and eurypterids like Hibbertopterus).]]> 2018-01-23 17:43:36 UTC https://padlet.com/304892/avf8plh9amzi/wish/223907717 304892 https://padlet.com/304892/avf8plh9amzi/wish/223908254 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.]]> 2018-01-23 17:44:32 UTC https://padlet.com/304892/avf8plh9amzi/wish/223908254 304892 https://padlet.com/304892/avf8plh9amzi/wish/223908635 A true form fossil is a fossil of the whole/entire body of the organism, like an actual animal or animal part. True form fossilsare formed when the animals soft tissues or hard parts did not decay over the years.]]> 2018-01-23 17:45:10 UTC https://padlet.com/304892/avf8plh9amzi/wish/223908635