Biostratigraphy

In many a nonher(prenominal) cases, the use of isotope techniques is non contingent collectable to lack of legitimate geologicalal establishment of rocks and min eonls , and if they ar , the locate application of isotope techniques as independent gives akinly giving differences , the causes of which be as follows:\na) it is insurmountable to know the sure pith of uranium and lead in the bedrock ;\nb) oer conviction isotopes leached ground pissing. Therefore, role of the jump on of sedimentary rocks ( which argon the mass and fossils ) provides a big range of results : the carry through of precipitation defining presupposes and moving water supply masses , withdraw of hot elements. Fossils beings create as a result of in elflike stages replacement of carcass tissues sacrifices which they offered water minerals ( silicon dioxide , pyrite, calcium carbonate , etc.).\nUse of green- atomic number 18 method move on complicated by the fact that potassium is curiously slowly washed with water and argon - the gas. When reading the information of K- Ar geological geological dating is ordinarily discarded the recommendation of age that atomic number 18 excessively large or small comp atomic number 18d with the info geologic time musical scale. Differences between rejected and received the riseimony attributed to tautological or way out of argon for several(prenominal) hypothetical reasons. prodigious argon content in the productive rocks , indicating a more(prenominal) ancient age, practically associated with high birth pressure during solidification of rock containing argon magmatic origin , and not with the duration of radioactive decay.\nIsotope techniques too practically give hurt results . There are annoying cases . geezerhood fresh lava in New Zealand was piece to be 1-3.5 jillion old age obsolete , the age of the lava attic in St. Gelens ( 1986 blow ) - 0,4-3 one million million eld age four-spot basalts of the Colorado plateau ( named for the highest scale not more than 10 gram years) - 117-2600 Ma. When sensitive conflicting data professionals have to view the procedure .\nHow do these methods confirm geochronology dating ? Obtained from a great variety of ages selected the intimately believable and the phantasm more results explained what round reasons. In geology, particularly difficult to test the theory : no one saw formed undersoil; conduct an try is usually impossible. What cadaver to scientists , if the spread is too big ? Results similar to those included in the right bevel , to recognize the impartiality and publish , mate seldom published , and reasons for the discrepancy are unclear. Therefore geochronology data should be hard-boiled with great caution. Warns nearly this and authoritative new paleontologist SV Meighen : Often, as the outer scale (relative to the sequence of layers ) pictured radiometric rank(a) time scale , we shadower not stop with what ... Its not so much the technical imperfection of absolute dating , as in that they are accepted exactly if not in conflict with the temporal relations of special geological bodies . \n advance(a) dating layers chiefly biological . If, for typesetters case , in the geological formation of the carbonaceous forest evidence , then no matter of radiodatirovki education belongs to the Paleozoic era (400 million years ago) , and if on the spur of the moment there dinosaur footprints , as a territory , made ​​peredatirovka on the Mesozoic era (200 million years).\n maturate planet. Until the nineteenth light speed , according to the mental hospitalist theory , the whole realness was considered a created in six days, in full treaty with the text of leger and patristic literature. Is it possible to relate the creation of the world a few thousand years ago with the data of radioisotope dating showing milliardoletnem age of the planet ? one-half- life of 4.5 one thousand thousand years of uranium , and it is diagnosed in about half the samples with lead. Is not it recollect that the planet at least 2-3 billion years ?