We present a method for ⁴⁰Ar/³⁹Ar step‐heating measurements on anhydrous K‐bearing minerals. Samples placed in dimples on Ta foil platforms are heated indirectly with a laser while temperatures are measured with a two‐color pyrometer. The system provides a simple, inexpensive, and reliable means for the heating of samples as small as a few to tens of micrograms. Results for plagioclase separates from the Rustenburg Layered Suite of the circa 2.06 Ga Bushveld Complex closely match previously published data.

中文翻译：

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Ta平台微炉对亚毫克样品的40Ar / 39Ar热年代学，并附有Bushveld配合物的插图

我们提出了一种对无水含K矿物进行⁴⁰ Ar / ³⁹ Ar步进加热测量的方法。将放置在Ta箔平台上的凹坑中的样品用激光间接加热，同时用双色高温计测量温度。该系统提供了一种简单，廉价和可靠的方式来加热小至几十至数十微克的样品。斜长石的结果与大约2.06 Ga Bushveld Complex的Rustenburg分层套件分离，与先前发布的数据非常匹配。