Padlet: Sedimentary Principals and Fossils by Claudia Tejeda Flores https://padlet.com/305176/i19cjgm2lcz7 Made with whimsy en-us 2018-01-23 18:23:56 UTC 2026-01-28 04:32:41 UTC hello@padlet.com Principle of uniformitarianism 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223934448 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. 

]]> 2018-01-23 18:26:39 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223934448 Principle of superposition 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223937486 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]]> 2018-01-23 18:31:12 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223937486 Principle of original horizontality 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223939010 The Principle of Original Horizontality states that layers of sediment are originally deposited horizontally under the action of gravity .]]> 2018-01-23 18:33:54 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223939010 Principle of original lateral continuity 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223939847 The principle of lateral continuity states that layers of sediment initially extend laterally in all directions; in other words, they are laterally continuous. ]]> 2018-01-23 18:35:14 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223939847 principle of cross-cutting relationships 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223941019 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 18:37:01 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223941019 Principle of inclusions 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223941844 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 18:38:25 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223941844 Mold and Cast fossils 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223943034 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external cost can be made.]]> 2018-01-23 18:40:19 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223943034 Petrification Fossils 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223943876 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 18:41:49 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223943876 Footprints and Trackways Fossils 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223944566 A fossil trackway is a type of trace fossil, a trackway made by an organism. ]]> 2018-01-23 18:43:05 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223944566 Coprolites Fossils 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223945307 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. ]]> 2018-01-23 18:44:25 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223945307 Whole Body or True Form Fossils 305176 https://padlet.com/305176/i19cjgm2lcz7/wish/223946310 A true form fossil is a fossil of the whole/entire body of the organism, like an actual animal or animal part. ]]> 2018-01-23 18:46:02 UTC https://padlet.com/305176/i19cjgm2lcz7/wish/223946310