➤ Earth science radioactive dating
Radiometric Dating and the Geological Time Scale: Circular Reasoning or Reliable Unfortunately the geologists date the rocks as the paleontologists tell them to. The newspapers and wire services lost interest and dropped the story. The discovery of the natural radioactive decay of uranium in by Dating rocks by these radioactive timekeepers is simple in theory, but. Copy editor: Peter Storer, Peter Storer Editorial Services. Cover, graphic . phrase 'dating methods' and we do not expect phrases such as 'radiocarbon dating' to be . Stuiver M, Reimer PJ, Bard E, Beck JW, Burr GS, Hughen KA, Kromer.
Geological specimens that are unearthed need to be assigned an appropriate age. To find their age, two major geological dating methods are used. These are called relative and absolute dating techniques. Absolute dating, also called numerical dating, arranges the historical remains in order of their ages. Whereas, relative dating arranges them in the geological order of their formation.
The relative dating techniques are very effective when it comes to radioactive isotope or radiocarbon dating. However, not all fossils or remains contain such elements. Relative techniques are of great help in such types of sediments. The following are the major methods of relative dating. The oldest dating method which studies the successive placement of layers. It is based on the concept that the lowest layer is the oldest and the topmost layer is the youngest.
An extended version of stratigraphy where the faunal deposits are used to establish dating. Faunal deposits include remains and fossils of dead animals.
Also, decent zircon crystals could hardly form if that molten rock cooled too quickly. The alternative is to imagine that those zircons were formed elsewhere and just happened to sort themselves out during the flood, and that they just happened to deposit themselves into the right strata to give the appearance of successive ages! The fictitious geologic column invented in the 's to discredit the Bible does not exist anywhere in the world except in textbooks.
Oh, sure, those early creationists invented the geologic column to discredit the Bible! That just makes loads of sense, doesn't it? Is it possible that Dr. Hovind, who taught earth science for 13 out of his 15 years as a high school science teacher, doesn't understand the concept behind the geologic column?
The thought boggles the mind! On top of that, Dr.
Radiometric dating - Wikipedia
Hovind is simply wrong in his claim that no place on Earth has a full set of representative strata. John Woodmorappe, a young-earth creationist, has admitted that representative strata from the Cambrian to the Tertiary have been discovered lying in their proper order in Iran, by the Caspian, the Himalayas, Indonesia, Australia, North Africa, Canada, South America, Japan, Mexico, and the Philippines! Woodmorappe,p.
Morton, a professional geophysicist, has reported that portions of Alaska also contain strata representing all these geologic periods lying in their exact textbook order. Phone conversation between Edward Babinski and Glenn Morton, as relayed to me. Sometime later he identified three wells for me in McKenzie County, North Dakota, which had penetrated all the geologic periods in their correct order.
Morton also indicated that the East China Sea, the Juixi pronounced jewshi basin in China and many more areas could be added to the list.
So, the geologic column definitely does exist! That is to say, there are a number of locations where every period of the geologic column from the Cambrian on up is present and in proper order.
Wherever we find relatively undisturbed areas without any of the obvious signs of mountain building, that strata is always in the textbook order. Some of the geologic periods may be missing, either because they were never laid down at that location or because they have since eroded away.
However, the relative order of those present is preserved. See Topics G4b and G4c for a discussion of missing and out-of-order strata. Showing that the geologic column is fully represented in various places is not my main concern here. Far more important is Dr.
Hovind's fundamental misunderstanding of the geologic column, which seems to be shared by many creationists. The geologic column is an ideal, complete, chronological reference frame that defines the status of those strata having more or less a worldwide distribution or correlation in time.
For example, local strata that can be traced to places where it lies above strata of the Mississippian Period, and to other places where it lies below strata of the Permian, or which can be dated or identified as belonging to that interval, is defined as belonging to the Pennsylvanian American or Upper Carboniferous European Period.
Of course, we are assuming the usual order here. Allowances must be made for overturned strata, etc. In the geologic column American versionthe Pennsylvanian Period is the sixth period in the Paleozoic era and is characterized in many places by great coal- oil- and gas-bearing deposits.
It contains the record of the first reptiles, etc. The geologic column is like a yearbook with the pictures of all the graduating students in it. No one expects that every one of those students will show up for a particular dance! Neither does the geologist expect that some locality must exhibit all the known strata. The point is that the earth's strata has a very definite chronological order to it, and that order, taken at its most complete, ideal form, serves as an abstract reference frame for defining the actual strata of each locality.
The question as to whether some locality has all the periods in the geologic column is only of academic interest; it has no bearing on the fitness of the concept. That is usually what is meant when one refers to the geologic column. If not that, then the phrase is simply being pressed, rather loosely, as another name for the strata of some locality or localities.
Poly-strata fossils, missing layers, layers out of order, misplaced fossils, and layers in reverse order all invalidate the geologic column. None of these charges amount to a hill of discarded beans. We can't examine every such claim, but we can look at a few examples.
Two FAQs on false creationist claims about "polystrate fossils. Hovind means fossils which cross several strata. Usually that means fossilized, vertical tree trunks. Creationists are attacking a straw man. No geologist claims that every little stratum requires thousands of years to be laid down!
The strata associated with polystrate fossils invariably show evidence of relatively rapid deposition. Eldredge,p.
They show a photo of the Yahtse River area in Alaska, which depicts a number of upright, broken-off stumps stripped of most of their branches. The taller stumps poke out above the alluvial mud. This is the result of natural processes accompanying river course change.
A couple of pages later we find a photograph showing how trees can be buried fairly quickly in another way. In this case, volcanic ash has partially buried a forest whose trees are mostly reduced to broken-off stumps stripped of their branches.
Continuing volcanic eruptions over a period of years dead trees last a long time! In some cases, burial might well be less than instantaneous. In the San Francisco area fossils of cedar and redwood dated at 23, years are found in place 20 feet below present sea level. This may be due to a rising sea level from melting ice-caps.
Encyclopedia Americana, Annual [Geology]. A similar find exists off the coast of Japan where remnants of a forest of willows and alders are found in 70 feet of water. They are some 10, years old Chorlton,p. Thus, we have polystrate fossils in the making, without the aid of Noah's flood. As to the foot whale, standing on its tail, which was found by the GREFCO Corporation near Lompoc, that being an outstanding example of a polystrate fossil, you may rest assured that geologists do not assume that it remained on its tail until slowly buried by diatoms!
More likely it died a natural death, sank to the bottom for a time, and was buried in some kind of underwater avalanche which left it in its vertical position. Here's what a Christian geologist had to say: Before the discovery of rapid, submarine sediment flows the circumstances under which these animals were buried was very much a mystery As pointed out in the early parts of this section on rapid burial, we now know of large sediment flows in various parts of the world which apparently had all of the characteristics necessary for overwhelming and burying both swift and large marine animals.
Wonderly,pages 56,58 Thus, the mystery of Lompoc poses no problems for standard-brand geology. However, we can do even better. Thanks to that modern wonder of wonders, the Internet, a complete accounting of the Lompoc whale mystery is only keystrokes away! His material comes directly from those folks at the Los Angeles Museum of Natural History who were involved in the excavation.
The original source of our story appears to be K. Russel, who wrote an article in Chemical and Engineering News Oct. Some "facts" were wrong from the start. To begin with, the whale fossil was not buried vertically. The angle was more like degrees from the horizonal. Most importantly, the skeleton lay parallel to the bedding plane, meaning that the site was, more or less, once a level sea floor.
The fossil was buried by the same kind of diatomites that accumulated in deep bays and basins along the Pacific Coast during Miocene times. These sediments lack any sedimentary structures that would indicate catastrophic deposition.
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Relative Vs. Absolute Dating: The Ultimate Face-off
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