放射性計時
什么是放射性計時? - 放射性計時有多準確﹖
- 怎樣使用放射性計時﹖
- 是否有其它的設想﹖
- 什么是最常見的放射性計時形式﹖
- 什么是鉀-氬計時﹖
- 什么是最準確的計時方法﹖
- 什么樣的岩石用鉀-氬計時?
- 用鉀-氬計時的玄武岩是否給予可靠的結果?
- 對于我們已經知道時間的火山熔岩又是怎麼樣的呢﹖
- 所觀察的鉀-氬同位素在玄武岩中的比例真正告訴的我們是什么﹖
- 鉀-氬計時是否在其它的岩石中有良好的實用性﹖
- 岩石中的氬是否只來自于鉀-40的衰退。
- 什么是What is Rubidium-Strontium Dating (Rb/Sr) ?
- How are Rb/Sr dates calculated?
- 什么是“一套樣品”﹖ 是從同一塊岩石樣品還是從不同塊岩石樣品中采取的礦物質﹖
- 為什么我們聽到這麼多日期 ﹖ 哪一種日期與進化論計時基準相吻合﹖
- 非常古老的年代是怎么樣解釋地﹖
- 非常年輕的年代是怎么樣解釋地﹖
- 那些相信地球生物只有較短生命的人是否可以解釋這些日期﹖
- What is Uranium-Thorium-Lead (U/Th/Pb) Dating?
- How does Uranium-Thorium-Lead Dating work?
- Can scientists using this method correct for migration of isotopes?
- Do the "discordia lines" give accurate ages?
- Is there any other explanation of the observed ratios?
- What is Carbon-14 dating?
- Where does C-14 come from?
- How is C-14 used in dating?
- How is C-14 measured?
- How accurate is C-14 dating?
- Is there any C-14 in fossil animals and plants?
- Why do creation/flood models predict that carbon-14 might be found in fossil material?
- How does a short-age model, with a flood only a few thousand years ago, explain these C-14 dates in the 55,000 year range?
- Could this slight amount of C-14 observed in fossils be contamination?
- Could this C-14 be formed from radioactivity underground?
- What would this residual activity mean for the evolutionary timescale?
- What are radiohaloes ?
- How can haloes show the age of a mineral?
- How reliable are ages based on halo damage?
- Are haloes formed by elements other than uranium?
- Are haloes found in other kinds of rocks besides granites?
- What could oval haloes in coal indicate about time?
- Are there uranium haloes in this coal?
- What is Fission Track Dating ?
- How are the fission tracks identified?
- How reliable are the results?
- How does the amino acid racemization method work?
- Does it give an accurate time-clock?
- How are the observed D/L ratios interpreted?
- What other methods are used?
- Can a rock be dated by more than one method?
- If multiple methods are used carefully in conjunction with fossils, does this mean that we can be sure that the date obtained gives the correct age?
- How would you summarize the situation with radiometric dating?
- How do you explain the consistent pattern of dates given by, say, K/Ar dating methods.
- What about, for example, the age of the Hawaiian Islands? The Hawaiian Islands are the remnants of a long chain of islands, youngest in the southeast (i.e. Hawaii, where the active volcanoes are) and progressively older toward the northwest. A consistent relationship has been found between the distance of a volcano from Hawaii and its radiometric age.
- How do you explain this: Using the estimated radiometric ages of the individual islands, and assuming uniform easterly movement, an estimate of 9cm/yr can be made for the Pacific Plate. Satellites have confirmed that rate.
什么是放射性計時? 放射性計時有多準確﹖ 怎樣使用放射性計時﹖是否有其它的設想﹖什么是最常見的放射性計時形式﹖什么是鉀-氬計時﹖ 什么是最準確的計時方法﹖什么樣的岩石用鉀-氬計時? 用鉀-氬計時的玄武岩是否給予可靠的結果? 對于我們已經知道時間的火山熔岩又是怎麼樣的呢﹖ 所觀察的鉀-氬同位素在玄武岩中的比例真正告訴的我們是什么﹖ 鉀-氬計時是否在其它的岩石中有良好的實用性﹖ 岩石中的氬是否只來自于鉀-40的衰退。什么是What is Rubidium-Strontium Dating (Rb/Sr) ? How are Rb/Sr dates calculated? 什么是“一套樣品”﹖ 是從同一塊岩石樣品還是從不同塊岩石樣品中采取的礦物質﹖ 為什么我們聽到這麼多日期 ﹖ 哪一種日期與進化論計時基準相吻合﹖ 非常古老的年代是怎么樣解釋地﹖ 非常年輕的年代是怎么樣解釋地﹖ 那些相信地球生物只有較短生命的人是否可以解釋這些日期﹖What is Uranium-Thorium-Lead (U/Th/Pb) Dating? How does Uranium-Thorium-Lead Dating work? Can scientists using this method correct for migration of isotopes? Do the "discordia lines" give accurate ages? Is there any other explanation of the observed ratios? What is Carbon-14 dating? Where does C-14 come from? How is C-14 used in dating?How is C-14 measured? How accurate is C-14 dating? Is there any C-14 in fossil animals and plants? Why do creation/flood models predict that carbon-14 might be found in fossil material? How does a short-age model, with a flood only a few thousand years ago, explain these C-14 dates in the 55,000 year range?Could this slight amount of C-14 observed in fossils be contamination?Could this C-14 be formed from radioactivity underground?What would this residual activity mean for the evolutionary timescale?What are radiohaloes ? How can haloes show the age of a mineral? How reliable are ages based on halo damage? Are haloes formed by elements other than uranium?Are haloes found in other kinds of rocks besides granites? What could oval haloes in coal indicate about time? Are there uranium haloes in this coal? What is Fission Track Dating ? How are the fission tracks identified? How reliable are the results? How does the amino acid racemization method work? Does it give an accurate time-clock? How are the observed D/L ratios interpreted? What other methods are used? Can a rock be dated by more than one method? If multiple methods are used carefully in conjunction with fossils, does this mean that we can be sure that the date obtained gives the correct age?How would you summarize the situation with radiometric dating? How do you explain the consistent pattern of dates given by, say, K/Ar dating methods. What about, for example, the age of the Hawaiian Islands? The Hawaiian Islands are the remnants of a long chain of islands, youngest in the southeast (i.e. Hawaii, where the active volcanoes are) and progressively older toward the northwest. A consistent relationship has been found between the distance of a volcano from Hawaii and its radiometric age. How do you explain this: Using the estimated radiometric ages of the individual islands, and assuming uniform easterly movement, an estimate of 9cm/yr can be made for the Pacific Plate. Satellites have confirmed that rate.