https://padlet.com/303916/ikvcapml9sqf en-us 2018-01-23 16:40:06 UTC 2024-05-31 21:27:12 UTC hello@padlet.com 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223871188 "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." (https://learningfossils.weebly.com/true-form-fossils.html)]]> 2018-01-23 16:41:41 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223871188 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223871985 "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." (https://en.wikipedia.org/wiki/Coprolite)]]> 2018-01-23 16:42:56 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223871985 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872099 "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. ... Some basic fossil trackway types: footprints."(https://en.wikipedia.org/wiki/Fossil_trackway)]]> 2018-01-23 16:43:09 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872099 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872186 " 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. Permineralization is often confused with petrification because it is the first step in the petrification process." (https://sciencing.com/petrified-fossil-10017264.html)]]> 2018-01-23 16:43:19 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872186 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872348 "Molds and casts are three-dimensional impressions in which the surface contours of an organism are preserved. Organisms buried in sediment slowly decompose, leaving a cavity that contains an exact imprint of the organisms’ shape and size. When this hollow space fills with material, this material takes the shape of the mold, forming a cast. Although the fossil may exhibit characteristics of the original organism, normally no organic material remains." (https://sciencing.com/mold-cast-fossils-6556194.html)]]> 2018-01-23 16:43:33 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872348 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872479 "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." (https://en.wikipedia.org/wiki/Law_of_included_fragments)]]> 2018-01-23 16:43:45 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872479 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872575 "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." (https://en.wikipedia.org/wiki/Cross-cutting_relationships)]]> 2018-01-23 16:43:55 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872575 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872655 "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." (https://en.wikipedia.org/wiki/Principle_of_lateral_continuity)]]> 2018-01-23 16:44:04 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872655 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872748 "The Principle of Original Horizontality states that layers of sediment are originally deposited horizontally under the action of gravity." (https://en.wikipedia.org/wiki/Principle_of_original_horizontality)]]> 2018-01-23 16:44:13 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872748 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872826 "A basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it." (http://www.dictionary.com/browse/law-of-superposition)]]> 2018-01-23 16:44:23 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872826 303916 https://padlet.com/303916/ikvcapml9sqf/wish/223872931 Uniformitarianism is defined as "the fundamental principle 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 geologic events can be explained by phenomena and forces observable today; the classical concept that 'the present is the key to the past'." (https://www.uniformitarianism.net/)]]> 2018-01-23 16:44:33 UTC https://padlet.com/303916/ikvcapml9sqf/wish/223872931