Geological evolution
Page 1 of 1
Geological evolution
The geology of an area evolves through time as rock units are deposited and inserted and deformational processes change their shapes and locations.
Rock units are first emplaced either by deposition onto the surface or intrude into the overlying rock. Deposition can occur when sediments settle onto the surface of the Earth and later lithify into sedimentary rock, or when as volcanic material such as volcanic ash or lava flows, blanket the surface. Igneous intrusions such as batholiths, laccoliths, dikes, and sills, push upwards into the overlying rock, and crystallize as they intrude.
After the initial sequence of rocks has been deposited, the rock units can be deformed and/or metamorphosed. Deformation typically occurs as a result of horizontal shortening, horizontal extension, or side-to-side (strike-slip) motion. These structural regimes broadly relate to convergent boundaries, divergent boundaries, and transform boundaries, respectively, between tectonic plates.
______________________
womens sweater vest
College Flags
Rock units are first emplaced either by deposition onto the surface or intrude into the overlying rock. Deposition can occur when sediments settle onto the surface of the Earth and later lithify into sedimentary rock, or when as volcanic material such as volcanic ash or lava flows, blanket the surface. Igneous intrusions such as batholiths, laccoliths, dikes, and sills, push upwards into the overlying rock, and crystallize as they intrude.
After the initial sequence of rocks has been deposited, the rock units can be deformed and/or metamorphosed. Deformation typically occurs as a result of horizontal shortening, horizontal extension, or side-to-side (strike-slip) motion. These structural regimes broadly relate to convergent boundaries, divergent boundaries, and transform boundaries, respectively, between tectonic plates.
______________________
womens sweater vest
College Flags
meodingu- Member
- Posts : 153
BDB Credits : 421
Rep : 0
Age : 39
Location : vn hp
Job/hobbies : studient
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum
|
|
Fri Mar 23, 2012 11:58 am by ailsaparker15
» How can i play texan holden poker in my nokia C3-00?
Mon Nov 28, 2011 1:15 pm by Carstensen
» Pet Franchisee
Mon Nov 14, 2011 2:07 pm by ailsaparker15
» Anyone think these are good for my forum?
Mon Nov 14, 2011 12:42 pm by ailsaparker15
» hello everyone
Thu Nov 03, 2011 7:49 am by ClintonSparano
» Features of FM Antenna
Tue Oct 25, 2011 10:17 am by ailsaparker15
» Inventory Management Software for Effective Warehouse Goods Management
Fri Oct 21, 2011 7:34 am by ailsaparker15
» features of Half log siding system
Thu Oct 13, 2011 11:22 am by ailsaparker15
» Things to know before installing a solar power system.
Sat May 28, 2011 1:23 pm by JaneAlbert