https://padlet.com/303995/12xthsnritup en-us 2018-04-26 18:08:27 UTC 2018-04-26 18:29:27 UTC hello@padlet.com 303995 https://padlet.com/303995/12xthsnritup/wish/255777871 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-04-26 18:11:26 UTC https://padlet.com/303995/12xthsnritup/wish/255777871 303995 https://padlet.com/303995/12xthsnritup/wish/255778990 The process by which the porosity of a given form of sediment is decreased as a result of its mineral grains being squeezed together by the weight of overlying sediment or by mechanical means.]]> 2018-04-26 18:13:59 UTC https://padlet.com/303995/12xthsnritup/wish/255778990 303995 https://padlet.com/303995/12xthsnritup/wish/255780354 the binding together of particles or other things by cement.]]> 2018-04-26 18:16:43 UTC https://padlet.com/303995/12xthsnritup/wish/255780354 303995 https://padlet.com/303995/12xthsnritup/wish/255782063 In geology and related fields, a stratum is a layer of sedimentary rock or soil, or igneous rockthat were formed at the Earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-04-26 18:20:07 UTC https://padlet.com/303995/12xthsnritup/wish/255782063 303995 https://padlet.com/303995/12xthsnritup/wish/255782661 the process of eroding or being eroded by wind, water, or other natural agents.]]> 2018-04-26 18:21:16 UTC https://padlet.com/303995/12xthsnritup/wish/255782661 303995 https://padlet.com/303995/12xthsnritup/wish/255783634 wear away or change the appearance or texture of by long exposure to the air.]]> 2018-04-26 18:22:53 UTC https://padlet.com/303995/12xthsnritup/wish/255783634 303995 https://padlet.com/303995/12xthsnritup/wish/255783948 an idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.]]> 2018-04-26 18:23:21 UTC https://padlet.com/303995/12xthsnritup/wish/255783948 303995 https://padlet.com/303995/12xthsnritup/wish/255784266 A metamorphic rock is a type of rock which has been changed by extreme heat and pressure.]]> 2018-04-26 18:23:56 UTC https://padlet.com/303995/12xthsnritup/wish/255784266 303995 https://padlet.com/303995/12xthsnritup/wish/255785295 Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water, ice fossils.]]> 2018-04-26 18:25:50 UTC https://padlet.com/303995/12xthsnritup/wish/255785295 303995 https://padlet.com/303995/12xthsnritup/wish/255786519 Igneous rock  or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.]]> 2018-04-26 18:28:16 UTC https://padlet.com/303995/12xthsnritup/wish/255786519