How is relative dating used to evaluate geologic time joy of single christian dating
Sediments are solid fragments of inorganic or organic material that come from the weathering of rock and soil erosion, and are carried and deposited by wind, water, or ice (Figure 3-7).Sediments may be made up of rock fragments ranging is size from boulders down to microscopic particles, and may contain organic matter.Examples of igneous rocks include granite, gabbro, and basalt.Rocks of igneous origin are discussed in Chapter 9.Geologists attempt to unravel geologic history by studying the geometry of outcrops in an area.
One of the products of this collective investigation over time is the geologic time scale (Figure 3-2).
The word igneous applies to any rock or mineral that solidified from molten or partly molten material (referring to magma underground or lava on the surface).
The word igneous also applies to the processes related to the formation of such rocks.
Igneous rocks includes intrusive rocks (rocks that cooled below the surface) and volcanic rocks formed on the Earth's surface by volcanism.
Igneous rocks also form from melting associated with extraterrestrial impacts.