Sedimentary Principals and Fossils by Christian Cruz Gonzalez https://padlet.com/304404/qdey25tmyfnb By Christian Cruz en-us 2018-01-23 16:33:38 UTC 2018-01-23 17:06:47 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Xmastree.png Principle of Uniformitarianism 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223867642 A geological doctrine that processes acting in the same manner as at present and over long spans of time are sufficient to account for all current geological features and all past geological changes — compare catastrophism.

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https://www.merriam-webster.com/dictionary/uniformitarianism ]]> 2018-01-23 16:36:37 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223867642 Principle of Superposition 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223867866 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.

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https://www.vocabulary.com/dictionary/principle%20of%20superposition]]> 2018-01-23 16:36:54 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223867866 Principle of Original Horizontality 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223868124 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.

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https://en.wikipedia.org/wiki/Principle_of_original_horizontality]]> 2018-01-23 16:37:16 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223868124 Principle of Original Lateral Continuity 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223869408 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.

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https://en.wikipedia.org/wiki/Principle_of_lateral_continuity]]> 2018-01-23 16:39:11 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223869408 Principle of Cross-Cutting Relationships 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223869688 Cross-cutting relationships is a principle of geology that states that the geologic feature which cutsanother is the younger of the two features.

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https://en.wikipedia.org/wiki/Cross-cutting_relationships
]]> 2018-01-23 16:39:36 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223869688 Principle of Inclusions 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223869963 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.

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https://en.wikipedia.org/wiki/Law_of_included_fragments]]> 2018-01-23 16:40:00 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223869963 Mold and Cast Fossils 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223870258 Mold & Cast Fossils. ... Most fossils do not contain actual body parts but are impressions, molds or casts of the original organism. Essentially, a mold fossil forms when the organic matter of the organism decomposes and leaves a cavity, or mold. Casts form when the cavity fills with sediment or minerals that harden.

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https://sciencing.com/mold-cast-fossils-6556194.html]]> 2018-01-23 16:40:27 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223870258 Petrification Fossils 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223870583 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.

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https://en.wikipedia.org/wiki/Petrifaction]]> 2018-01-23 16:40:49 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223870583 Footprints and Trackways Fossils 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223870737 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.

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https://en.wikipedia.org/wiki/Fossil_trackway]]> 2018-01-23 16:41:03 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223870737 Coprolites Fossils 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223870869 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").

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https://en.wikipedia.org/wiki/Coprolite]]> 2018-01-23 16:41:13 UTC https://padlet.com/304404/qdey25tmyfnb/wish/223870869 Whole Body or True Form Fossils 304404 https://padlet.com/304404/qdey25tmyfnb/wish/223871017 A true form fossil is a fossil of the whole/entire body of the organism, like an actual animal or animal part. How Are TheyFormed ? True form fossils are formed when the animals soft tissues or hard parts did not decay over the years. Comments.

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https://www.sites.google.com/site/fossilfinding/types-of-fossils/true-form-fossils
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