< p > < a href = " https://www.sciencemag.org/news/2016/03/hobbit-was-separate-species-human-new-dating-reveals " rel = " nofollow noreferrer " > ScienceMag < / >表示:< / p > < blockquote > < p >而不是直接约会他们破坏化石,沉积物的研究小组发现了他们。他们发现块木炭在沉积物中类似的深度,和认为这是代理自己年龄的化石。木炭碎片可以上溯到19000和13000到11000年之前。< br >但梁Bau拥有一个非常复杂的地质历史,淤泥和粘土的层与层风化灰岩交错,松散的碎石和火山灰。在许多地方,这些层被侵蚀、冲刷被渗出的水,改变由构造活动和混乱。< br >…< br >约会的砾质沉积物层包含化石暗示这是100000至60000年前之间沉积;上面是一层火山灰追溯到大约60000年前。这表明,化石本身不可能比60000岁的年轻团队报告发表在今天的《自然》。< br >上限,球队现在已经直接约会化石本身。最初,分析人员回避,因为害怕伤害他们,Tocheri说。但是这一次,他们感到他们需要这样做。 “It wasn’t until [we] were reasonably convinced that [the fossils] were probably older than 50,000 years old that we decided we needed to date them directly to be absolutely certain,” he says.
The team dated three arm bones found at different locations within the cave during previous excavations. Using uranium-thorium dating—which is based on the radioactive decay of uranium and thorium isotopes in a material—they found dates ranging from about 66,000 to 87,000 years old. I could not find how the "charcoal bits" were dated, but it would be in the range for carbon dating.