Changing Views of the History of the Earth

Its energy is found in fossil fuels as well as all living things. There is a great deal of information and enthusiasm today about the development and increased production of our global energy needs from alternative energy sources. Solar energy, wind power and moving water are all traditional sources of alternative energy that are making progress. The enthusiasm everyone shares for these developments has in many ways created a sense of complacency that our future energy demands will easily be met. Alternative energy is an interesting concept when you think about it. In our global society, it simply means energy that is produced from sources other than our primary energy supply: Coal, oil and natural gas are the three kinds of fossil fuels that we have mostly depended on for our energy needs, from home heating and electricity to fuel for our automobiles and mass transportation. The problem is fossil fuels are non-renewable. They are limited in supply and will one day be depleted.

Homo habilis

The main point of the debate seems to be the following: Over the past decades, several research groups of self-proclaimed creationist scientists have claimed discoveries of dinosaur bones that they have managed to date, using radiocarbon dating methods , at some age which is a lot below the ‘usual’ i. The age that these groups claim to find is usually on the order of thousands or tens of thousands of years old.

The particular example you bring up is one of the most famous such cases.

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January Fossils provide a record of the history of life. Smith is known as the Father of English Geology. Our understanding of the shape and pattern of the history of life depends on the accuracy of fossils and dating methods. Some critics, particularly religious fundamentalists, argue that neither fossils nor dating can be trusted, and that their interpretations are better. Other critics, perhaps more familiar with the data, question certain aspects of the quality of the fossil record and of its dating.

These skeptics do not provide scientific evidence for their views. Current understanding of the history of life is probably close to the truth because it is based on repeated and careful testing and consideration of data. The rejection of the validity of fossils and of dating by religious fundamentalists creates a problem for them: Millions of fossils have been discovered. They cannot deny that hundreds of millions of fossils reside in display cases and drawers around the world.

Perhaps some would argue that these specimens – huge skeletons of dinosaurs, blocks from ancient shell beds containing hundreds of specimens, delicately preserved fern fronds — have been manufactured by scientists to confuse the public. This is clearly ludicrous. Some skeptics believe that all fossils are the same age.

Carbon 14 dating of fossils and coal

So, how do we know how old a fossil is? There are two main methods determining a fossils age, relative dating and absolute dating. Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Before more precise absolute dating tools were possible, researchers used a variety of comparative approaches called relative dating. These methods — some of which are still used today — provide only an approximate spot within a previously established sequence: Think of it as ordering rather than dating.

Shop Now Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth. Many people have been led to believe that radiometric dating methods have proved the earth to be billions of years old. With our focus on one particular form of radiometric dating—carbon dating—we will see that carbon dating strongly supports a young earth. Note that, contrary to a popular misconception, carbon dating is not used to date rocks at millions of years old.

Basics Before we get into the details of how radiometric dating methods are used, we need to review some preliminary concepts from chemistry. Recall that atoms are the basic building blocks of matter. Atoms are made up of much smaller particles called protons, neutrons, and electrons. Protons and neutrons make up the center nucleus of the atom, and electrons form shells around the nucleus. The number of protons in the nucleus of an atom determines the element.

For example, all carbon atoms have 6 protons, all atoms of nitrogen have 7 protons, and all oxygen atoms have 8 protons.

Hominid Species

The fossils, found at Mazon Creek, Illinois, at the site of an nuclear plant, were uncovered earlier this year, with egg cases from the same species dating to about million years ago. The findings suggests that the prehistoric relative of modern day sharks lived in freshwater but migrated down rivers to give birth in salty seawater. All the finds were found preserved in rocks that formed within the coal and shale deposits of the abandoned mine.

It is said to be one of only a small handful of similar fossil locations left in the UK.

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Senior research scientist Alexander Cherkinsky specializes in the preparation of samples for Carbon testing. He directed the pretreatment and processing of the dinosaur bone samples with the Accelerator Mass Spectrometer, though he did not know the bones were from dinosaurs, and he signed the reports. Carbon dating at this facility is certainly the very best. But in , someone told the director of the facility, Jeff Speakman, that the Paleochronology group was showing the Carbon reports on a website and YouTube and drawing the obvious conclusions.

So when he received another bone sample from the Paleochronology group, he returned it to sender and sent an email saying: The scientists at CAIS and I are dismayed by the claims that you and your team have made with respect to the age of the Earth and the validity of biological evolution. Consequently, we are no longer able to provide radiocarbon services in support of your anti-scientific agenda. I have instructed the Radiocarbon Laboratory to return your recent samples to you and to not accept any future samples for analysis.

Doesn’t Carbon-14 Dating Disprove the Bible?

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Isochron Dating By Chris Stassen The article is well illustrated and well written. There is an introduction to the generic problem of radiometric dating, but this article concentrates on one well established method called the “isochron method”.

In , in an area called Chalkidiki in Petralona, Northern Greece, a shepherd came across a small opening to a cave, which became visible when a thick covering of snow finally melted. He gathered a group of villagers to help him clear the entrance so they could go inside and explore. They found a cave rich in stalactites and stalagmites.

But they also found something surprising — a human skull embedded in the wall later research also uncovered a huge number of fossils including pre-human species, animal hair, fossilized wood, and stone and bone tools. The agreement was that once the research was done, a museum would be opened featuring the findings from the Petralona cave, and the skull would be returned to be displayed in the museum — something that never happened.

Upon his return to Greece, Dr Poulianos was made aware of the discovery of the skull at Petralona, and immediately started studying the Petralona cave and skull.

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Dating refers to the archaeological tool to date artefacts and sites, and to properly construct history. All methods can be classified into two basic categories: Based on a discipline of geology called stratigraphy, rock layers are used to decipher the sequence of historical geological events. Relative techniques can determine the sequence of events but not the precise date of an event, making these methods unreliable.

Part 1A. A large, but by no means complete, list of transitional fossils that are known. Use this article to counter the common creationist canard that there are no intermediates in the fossil record.

One of the Olduvai hominins, OH 24, seems anatomically similar to Australopithecus in having prominent cheekbones and a flat nasal region. Such hollowing of the face is characteristic of some South African australopiths but is not seen in later Homo. The facial skeleton of ER is large relative to the braincase, and it shows flattening below the nose —Australopithecus-like features.

The walls of the nasal opening, however, are slightly everted, and there is at least an indication that the nose stands out in more relief than would be expected in australopiths. The face of ER is even more modern. The front teeth of H. The jaw itself may be quite heavily constructed like that of gracile australopiths.

This is the case for OH 7 and also for at least one specimen from Koobi Fora. Other jaws are smaller but still robust in the sense of being thick relative to height. For example, the mandible of OH 13 is similar in many respects to that of H. Only a few other skeletal parts have been discovered. Some limb bones from Olduvai and Koobi Fora have been grouped tentatively with H. These fossils, however, are not associated with any teeth or skulls, and it is probably not appropriate to use them as the basis for describing early Homo.

One individual for which body parts are more fully represented is OH

How accurate is radiocarbon dating?