https://padlet.com/304917/thgkh914h3sq Science padlet en-us 2018-01-23 20:08:56 UTC 2025-06-19 15:22:19 UTC hello@padlet.com 304917 https://padlet.com/304917/thgkh914h3sq/wish/223995674 A geological doctrine that states that current geologic processes account for all of Earth's geological features. ]]> 2018-01-23 20:11:04 UTC https://padlet.com/304917/thgkh914h3sq/wish/223995674 304917 https://padlet.com/304917/thgkh914h3sq/wish/223995937 A basic law of geochronology that claims that in any undisturbed sequence of rocks deposited in layers, the youngest layers being on the top and oldest layers being under them.]]> 2018-01-23 20:11:36 UTC https://padlet.com/304917/thgkh914h3sq/wish/223995937 304917 https://padlet.com/304917/thgkh914h3sq/wish/224001348 This principle states that layers of sediment are originally deposited horizontally under the action of gravity.]]> 2018-01-23 20:22:35 UTC https://padlet.com/304917/thgkh914h3sq/wish/224001348 304917 https://padlet.com/304917/thgkh914h3sq/wish/224002958 The principle talks about how the layers of sediment initially extend laterally in all directions.  This also means that they are laterally continuous.]]> 2018-01-23 20:26:02 UTC https://padlet.com/304917/thgkh914h3sq/wish/224002958 304917 https://padlet.com/304917/thgkh914h3sq/wish/224004010 A principle of geology that states that the geologic feature which cuts another is the younger of the two features.  It is a relative dating technique in geology.]]> 2018-01-23 20:28:32 UTC https://padlet.com/304917/thgkh914h3sq/wish/224004010 304917 https://padlet.com/304917/thgkh914h3sq/wish/224004800 The principle states that, with sedimentary rocks, if inclusions are found in a formation, then the inclusions must be older than the formation that contains them.]]> 2018-01-23 20:30:36 UTC https://padlet.com/304917/thgkh914h3sq/wish/224004800 304917 https://padlet.com/304917/thgkh914h3sq/wish/224005873 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 20:32:58 UTC https://padlet.com/304917/thgkh914h3sq/wish/224005873 304917 https://padlet.com/304917/thgkh914h3sq/wish/224006935 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 20:35:21 UTC https://padlet.com/304917/thgkh914h3sq/wish/224006935 304917 https://padlet.com/304917/thgkh914h3sq/wish/224007753 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. ]]> 2018-01-23 20:37:16 UTC https://padlet.com/304917/thgkh914h3sq/wish/224007753 304917 https://padlet.com/304917/thgkh914h3sq/wish/224008592 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, like its diet.]]> 2018-01-23 20:39:21 UTC https://padlet.com/304917/thgkh914h3sq/wish/224008592 304917 https://padlet.com/304917/thgkh914h3sq/wish/224009388 A true form fossil is a fossil of the whole/entire body of the organism.  True form fossils are formed when the animals soft tissues or hard parts did not decay over the years.]]> 2018-01-23 20:41:17 UTC https://padlet.com/304917/thgkh914h3sq/wish/224009388