(SGER) Electron Spin Resonance Dating of Ancient Speleothems From Lechuguilla Cave, New Mexico

小行星9523977 他们建议开始探索新墨西哥州的龙舌兰洞的潜力，以获得整个更新世的氧同位素古气候记录。 在这个时候，著名的魔鬼洞方解石洞穴是唯一的稳定同位素记录追溯到中更新世在美国西南部（Winograd等人，1992年）。他们在龙舌兰洞发现了一个乳头状方解石洞穴，比魔鬼洞的方解石还要古老。 这个样本有可能通过氧同位素 （18O）测量，提供了一个古气候记录的分辨率可比的魔鬼洞。 任何此类研究的重要任务之一是发展数字年龄年表。 他们将使用电子自旋共振（ESR）光谱测年来实现这一目标。

9523977 Stuiver They propose to begin exploring the potential of Lechuguilla Cave, New Mexico, for obtaining oxygen-isotope paleoclimate records extending throughout the Pleistocene. At this time, the famous Devil Hole calcite speleothem is the only stable isotope record reaching back to the middle Pleistocene in the Southwestern US (Winograd et al, 1992). They have recovered a mammillary calcite speleothem from Lechuguilla Cave which is older than the Devils Hole calcite. This sample the has the potential, through oxygen isotope ( 18O) measurements, of providing a paleoclimate record comparable in resolution to that at Devils Hole. One of the significant tasks in any such study is the development of a numerical age chronology. They will use electron spin resonance (ESR) spectroscopic dating to accomplish this goal.