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CF has always been a site that welcomes people from different backgrounds and beliefs to participate in discussion and even debate. That is the nature of its ministry. In view of recent events emotions are running very high. We need to remind people of some basic principles in debating on this site. We need to be civil when we express differences in opinion. No personal attacks. Avoid you, your statements. Don't characterize an entire political party with comparisons to Fascism or Communism or other extreme movements that committed atrocities. CF is not the place for broad brush or blanket statements about groups and political parties. Put the broad brushes and blankets away when you come to CF, better yet, put them in the incinerator. Debate had no place for them. We need to remember that people that commit acts of violence represent themselves or a small extreme faction.
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Gracchus
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So, without further comment, here is a refutation posted a thousand times. (I am willing to bet that "True Science" will not take the time to read it, and if he does, he will not understand it.)
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So, without further comment, here is a refutation posted a thousand times. (I am willing to bet that "True Science" will not take the time to read it, and if he does, he will not understand it.)
Read what?
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Americans do not realise the damage this video and others like it will do to many young people in America, why would anyone want to retard their child's education? the video was made to deliberately deceive.
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Videos like that is what drives people away from Christianity. If one must lie and misrepresent science to support ones' belief in God, then why would anyone want to believe in that God?
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Why would anyone decide to be a Scientologist or a Moony? they need something they can cling onto no matter what it is,
desperate people do desperate things and sadly quite a few Americans are very desperate indeed.
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freezerman2000
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juvenissun
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You read something about stratigraphy. What is your rebuttal about the idea of strata shown in the video (a few minutes since 30' in the video)? How could a volcanic eruption make such a detailed stratification?
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Gracchus
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The "minutely layered strata" are all the same mineral composition, differing only in the size of the grain. It is all pyroclastic flow.
Pyroclastic flow is turbulent, and the speed of the flow varies over time and from place to place, so the grain size of the deposit varies from time to time and place to place. Think of how fast flowing water will carry along pebbles but deposit cobbles, while slower moving water will carry clay but deposit sand.
Now in the Grand Canyon, for instance, the layered formations differ not only in grain size but in chemical composition. Some of the sandstone is aeolian deposits, wind-blown sand dunes with spider tracks, later covered by very still ocean water which deposits limestone or shale with the burrows of marine tube worms. Again, limestone forms underwater, but the caves in the limestone form above water, and those caves, in turn have been covered over by water born deposits.
I took a summer school course in geology in high school, and even I could distinguish the layering of limestones, sandstones, clays and conglomerates from the layering of pumice deposited by pyroclastic flow.
Read a book, and go look at the rocks yourself.
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juvenissun
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You did not answer my question: "How could a volcanic eruption make such a detailed stratification?"
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juvenissun
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The "minutely layered strata" are all the same mineral composition, differing only in the size of the grain. It is all pyroclastic flow.
Pyroclastic flow is turbulent, and the speed of the flow varies over time and from place to place, so the grain size of the deposit varies from time to time and place to place. Think of how fast flowing water will carry along pebbles but deposit cobbles, while slower moving water will carry clay but deposit sand.
I appreciate your answer very much, consider that you are not trained in geology.
But, exactly because the nature of pyroclastic flow as you described, we should not expect a fine laminated deposition like what we found on the ash/sand/pebble deposition. When later forceful flows ran over the earlier deposits, we should even expect frequent erosion and gouging of the loose sediments deposited slightly earlier.
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I didn't answer it the way you wanted it answered, but I did answer it. My answer was directed to the misrepresentation of the video in the OP. An erupting volcano can lay down many unconsolidated layers depending upon the intensity of eruptions, prevailing winds affecting deposition, and variability in ash and or debris, content, and size. Other factors can come into play as well. Bottom line, the video is misrepresenting stratigraphic process.
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