Difference between revisions of "Cambrian"

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The '''Cambrian''' [[period (geology)|period]] is part of the [[geologic system]] of classifying geologic formations.
 
The '''Cambrian''' [[period (geology)|period]] is part of the [[geologic system]] of classifying geologic formations.
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*During this geological period, many new and anatomically sophisticated creatures appeared suddenly in the sedimentary layers of the geologic column without any evidence of simpler ancestral forms in the earlier layers below, in an event that paleontologists today call the Cambrian explosion.<ref>[https://www.amazon.com/dp/0062071475/ref=as_li_qf_sp_asin_til?tag=anncoulter-20&camp=14573&creative=327641&linkCode=as1&creativeASIN=0062071475&adid=1QSNY85R152GT1QTA6NH&&ref-refURL=http%3A%2F%2Fwww.anncoulter.com%2F Darwin's Doubt], page 7 - [[Stephen C. Meyer]]</ref>
  
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The Cambrian period is the first period of the [[Paleozoic]] era, and is divided into Early, Middle, and Furongian epochs.  The Cambrian is preceded by the [[Pre-Cambrian]] era and followed by the [[Ordovician]] era.
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== Description ==
  
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The Cambrian was named by the geologist [[Adam Sedgwick]] for Cambria,<ref>http://www.ucmp.berkeley.edu/history/sedgwick.html</ref> Latin for [[Wales]], which has large areas of rock originating in, and characteristic of, the period.
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The Cambrian period is the first period of the [[Paleozoic]] era, and is divided into Early, Middle, and Furongian epochs.  The Cambrian is preceded by the [[Precambrian]] era and followed by the [[Ordovician]] era.The Cambrian was named by the geologist [[Adam Sedgwick]] for Cambria,<ref>http://www.ucmp.berkeley.edu/history/sedgwick.html</ref> Latin for [[Wales]], which has large areas of rock originating in, and characteristic of, the period.Common Cambrian [[fossil]]s are of [[trilobite]]s, and inarticulate [[brachiopod]]s,<ref>http://www.palaeos.com/Paleozoic/Cambrian/Cambrian.htm#bio</ref> [[coral]]s and primitive [[echinoderm]]s. They also include what are considered by evolutionists to be the first [[vertebrate]]s, "primitive" jawless fish. Fossil remains other than shells or carapaces are rare.  One notable site for soft-bodied Cambrian invertebrate remains is the [[Burgess Shale]] of [[British Columbia]].<ref>http://wwwalt.uni-wuerzburg.de/palaeontologie/Stuff/casu9.htm</ref>
  
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Under the uniformitarian dates assigned by secular geologists, it represents approximately the period of Earth's history from about 542 million years ago to 488 million years ago.<ref>Gradstein, F.M., and Ogg, J.G.,[http://www.stratigraphy.org/scale04.pdf Geologic Time Scale 2004 – Why, How, and Where Next!]</ref>  Young Earth creationists reject the uniformitarian assumptions behind the dates derived by secular geologists, so they reject these dates (see [[geologic system]]).
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== Era and evolution ==
  
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Evolutionists believe that the [[Cambrian Radiation]] gave rise to almost all living phyla, but often in extinct forms with small resemblance to typical living species. Common Cambrian [[fossil]]s are of [[trilobite]]s, and inarticulate [[brachiopod]]s,<ref>http://www.palaeos.com/Paleozoic/Cambrian/Cambrian.htm#bio</ref> [[coral]]s and primitive [[echinoderm]]s. They also include what are considered to be the first [[vertebrate]]s, "primitive" jawless fish.
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Under the uniformitarian dates assigned by secular geologists, it represents approximately the period of Earth's history from about 542 million years ago to 488 million years ago.<ref>Gradstein, F.M., and Ogg, J.G.,[http://www.stratigraphy.org/scale04.pdf Geologic Time Scale 2004 – Why, How, and Where Next!]</ref> Young Earth creationists reject the uniformitarian assumptions behind the dates derived by secular geologists, so they reject these dates (see [[geologic system]]). Instead, most would consider the Cambrian sediment to be early [[Flood Geology|Flood]] deposits.<ref>Snelling, Andrew, ''Radiohalos in Granite'', chapter 5 of DeYoung, Don, "Thousands, Not Billions", Master Books, 2005, p.89, ISBN 0-89051-441-0.</ref>
  
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Fossil remains other than shells or carapaces are rare, leading evolutionists to conclude that many of the organisms of the Cambrian were soft-bodied [[invertebrate]]s. One notable site for soft-bodied Cambrian invertebrate remains is the [[Burgess Shale]] of [[British Columbia]].<ref>http://wwwalt.uni-wuerzburg.de/palaeontologie/Stuff/casu9.htm</ref>
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Evolutionists believe that the [[Cambrian Radiation]] gave rise to almost all living phyla, but often in extinct forms with small resemblance to typical living species.
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The rarity of shells or carapaces leads evolutionists to conclude that many of the organisms of the time were soft-bodied [[invertebrate]]s.
  
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== Young earth creationist scientists view ==
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One objection to the [[Theory of evolution]] came from [[Louis Agassiz]]:
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[[Young earth creationist]] scientists believe that the [[Theory of evolution|evolutionary]] [[Geology|geological]] timescale is in error. <ref>http://www.trueorigin.org/geocolumn.asp</ref><ref>http://www.icr.org/index.php?module=articles&action=view&ID=54</ref><ref>http://www.allaboutcreation.org/geologic-time-scale.htm</ref>  These scientists believe that the earth is young and has multiple lines of evidence from the field of geology showing that the earth is young. <ref>http://www.answersingenesis.org/home/area/faq/geology.asp</ref><ref>http://www.creationism.org/topbar/geology.htm</ref><ref>http://www.grisda.org/georpts/gr11.htm</ref><ref>http://www.nwcreation.net/geologylinks.html</ref><ref>http://globalflood.org/</ref>  Also, young earth creationist scientists assert that there is an abundance of scientific arguments in addition to geology showing the earth and universe are both approximately 6,000 years in age.<ref>http://www.answersingenesis.org/home/area/faq/young.asp</ref><ref>http://www.answersingenesis.org/home/area/faq/astronomy.asp</ref><ref>http://www.icr.org/article/1842/</ref>  In addition, young earth creationist scientists have a number of arguments against the position of an extremely old age for the earth and the universe.<ref>http://www.answersingenesis.org/home/area/faq/dating.asp</ref><ref>http://www.answersingenesis.org/home/area/faq/astronomy.asp</ref><ref>http://www.apologeticspress.org/modules.php?name=Read&cat=1&itemid=22</ref><ref>http://www.answersingenesis.org/docs2002/0809_cdk_davies.asp</ref> [[Flood Geology|Flood geologists]] also point out that [[catastrophism]] is increasingly being accepted in the field of geology. <ref>http://www.grisda.org/origins/12061.htm</ref>
 
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<ref>http://www.icr.org/index.php?module=articles&action=print&ID=84</ref>  In addition, creationists also assert that old earth uniformitarian geology has numerous [[Anomaly|anomalies]].  For example, creationists cite the work of [[William R. Corliss]] who catalogued numerous anomalies in the old earth uniformatarian geology [[paradigm]]. <ref>http://www.science-frontiers.com/sourcebk.htm</ref><ref>http://www.apologeticspress.net/articles/184</ref> Corliss wrote regarding [[Paraconformity|paraconformities]] the following:
 
  
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{{cquote|
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*Agassiz concluded that the fossil record, particularly the record of the explosion of Cambrian animal life, posed an insuperable difficulty for Darwin's theory. [https://www.amazon.com/dp/0062071475/ref=as_li_qf_sp_asin_til?tag=anncoulter-20&camp=14573&creative=327641&linkCode=as1&creativeASIN=0062071475&adid=1QSNY85R152GT1QTA6NH&&ref-refURL=http%3A%2F%2Fwww.anncoulter.com%2F Darwin's Doubt], page 8 - [[Stephen C. Meyer]]
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"Potentially more important to geological thinking are those [[unconformity|unconformities]] that signal large chunks of geological history are missing, even though the strata on either side of the unconformity are perfectly parallel and show no evidence of erosion. Did millions of years fly by with no discernible effect? A possible though controversial inference is that our geological clocks and stratigraphic concepts need working on." William R. Corliss, Unknown Earth (Glen Arm, Maryland: The Sourcebook Project, 1980), p. 219. <ref>http://www.cs.unc.edu/~plaisted/ce/flood.html</ref>
 
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}}
 
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The science journal [[New Scientist]] wrote regarding Corliss's work the following: "All I can say to Corliss is carry on cataloging." <ref>http://www.science-frontiers.com/sourcebk.htm</ref>  Young earth creationist scientists assert that paraconformaties pose a serious challenge to the old earth uniformitarian geology paradigm. <ref>http://www.grisda.org/georpts/36.pdf</ref><ref>
 
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http://www.grisda.org/2003-FSC-open/Roth-RecentCreation.htm</ref><ref>http://www.seeking-god.co.uk/id188.htm</ref>
 
  
 
==References==
 
==References==
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[[Category:Geological systems]]
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[[Category:Geologic Systems]]

Latest revision as of 05:51, April 9, 2019

The Cambrian period is part of the geologic system of classifying geologic formations.

  • During this geological period, many new and anatomically sophisticated creatures appeared suddenly in the sedimentary layers of the geologic column without any evidence of simpler ancestral forms in the earlier layers below, in an event that paleontologists today call the Cambrian explosion.[1]

Description

The Cambrian period is the first period of the Paleozoic era, and is divided into Early, Middle, and Furongian epochs. The Cambrian is preceded by the Precambrian era and followed by the Ordovician era.The Cambrian was named by the geologist Adam Sedgwick for Cambria,[2] Latin for Wales, which has large areas of rock originating in, and characteristic of, the period.Common Cambrian fossils are of trilobites, and inarticulate brachiopods,[3] corals and primitive echinoderms. They also include what are considered by evolutionists to be the first vertebrates, "primitive" jawless fish. Fossil remains other than shells or carapaces are rare. One notable site for soft-bodied Cambrian invertebrate remains is the Burgess Shale of British Columbia.[4]

Era and evolution

Under the uniformitarian dates assigned by secular geologists, it represents approximately the period of Earth's history from about 542 million years ago to 488 million years ago.[5] Young Earth creationists reject the uniformitarian assumptions behind the dates derived by secular geologists, so they reject these dates (see geologic system). Instead, most would consider the Cambrian sediment to be early Flood deposits.[6]

Evolutionists believe that the Cambrian Radiation gave rise to almost all living phyla, but often in extinct forms with small resemblance to typical living species. The rarity of shells or carapaces leads evolutionists to conclude that many of the organisms of the time were soft-bodied invertebrates.

One objection to the Theory of evolution came from Louis Agassiz:

  • Agassiz concluded that the fossil record, particularly the record of the explosion of Cambrian animal life, posed an insuperable difficulty for Darwin's theory. Darwin's Doubt, page 8 - Stephen C. Meyer

References

  1. ↑ Darwin's Doubt, page 7 - Stephen C. Meyer
  2. ↑ http://www.ucmp.berkeley.edu/history/sedgwick.html
  3. ↑ http://www.palaeos.com/Paleozoic/Cambrian/Cambrian.htm#bio
  4. ↑ http://wwwalt.uni-wuerzburg.de/palaeontologie/Stuff/casu9.htm
  5. ↑ Gradstein, F.M., and Ogg, J.G.,Geologic Time Scale 2004 – Why, How, and Where Next!
  6. ↑ Snelling, Andrew, Radiohalos in Granite, chapter 5 of DeYoung, Don, "Thousands, Not Billions", Master Books, 2005, p.89, ISBN 0-89051-441-0.
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