Fossil.

Fossil (Latin: fossa which means "dug out of the ground") is the remains or traces of living things to stone or mineral. To be fossilized, the remains of animals or plants should be immediately covered with sediment. By distinguished experts several kinds of fossils. There's the usual stone fossils, fossils formed in amber, fossil tar, as it is formed in the La Brea tar wells in California. Animal or plant that was thought to be extinct but there was still called living fossils. The most common fossil skeleton is left as shells, teeth and bones. Fossils of soft tissues are rare. The study of fossils is paleontology, which is also a branch of science that embraced archeology.
Fossilization.
Fossilization is the process of accumulation of the remains of animals or plants that accumulate in sediments or sediments that undergo preservation either as a whole, in part or trace amounts. There are several requirements the pemfosilan among other things:
1. The organism has a hard body parts
2. Experiencing preservation
3. Free from spoilage bacteria
4. Occurs naturally
5. Contain high levels of oxygen in small amounts
6. Age more than 10,000 years ago.

Living fossils. 

The term "living fossil" is a term used of a living species that resembles a species known only from fossils. Some living fossils include fish coelacanth and ginkgo trees. Living fossils can also refer to a living species that do not have any other close species or a small group of close species that do not have other close species. An example of this last criterion is nautilus.

Place of fossil discoveries. 

Most fossils are found in sedimentary rocks (sediments) whose surface is open. Rock that contains many fossils called fosiliferus. Types of fossils contained in the rocks depending on the type of environment in which sedimentary scientifically sedimented. Marine sediments, of coastline and shallow seas, usually contains the most fossils.

The process of fossil formation. 

Fossils are formed from the process of the destruction of relics of once-living organisms. This often happens when a plant or animal is buried in an oxygen-free environment. Rare fossil preserved in its original form. In some cases, the mineral content change chemically or their remnants dissolved all so replaced with mold.

Utilization of fossils. 

Fossil is important to understand the history of the earth's sedimentary rocks. Subdivision of geologic time and compatibility with rock layers depending on the fossil. Organisms change with the passage of time and these changes are used to mark a period of time. For example, rocks containing fossil graptolites must be dated from the Paleozoic era. Geographic spread of fossils allow geologists to match the composition of rocks from other parts of the world.

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Thank you for reading this article. Written and posted by Bambang Sunarno.
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http://primadonablog.blogspot.com/2014/02/fossil.html
DatePublished: February 12, 2014 at 10:32
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Tag; Fossils