The frequency with which certain simple motifs appear in these oldest sites has led rock-art researchers to adopt a descriptive term-the Panaramitee style-a label which takes its name from the extensive rock pavements at Panaramitee North in desert South Australia, which are covered with motifs pecked into the surface.
句子语法结构分析如下：

句子主语：The frequency （频率）

修饰主语定于从句：with which certain simple motifs appear in these oldest sites
翻译版本（1）（以这种频率,某些简单的装饰图形出现在这些最古老老的遗址中.）
翻译版本（2）（某些简单的装饰图形出现在这些最古老老的遗址中所使用的这种频率）

句子谓语：has led rock-art researchers to adopt a descriptive term
翻译版本（1）（这种频率）使得石头艺术的研究者们采用了一个描述性/叙述性的术语
翻译版本（2）（这种频率）导致岩石艺术研究者们采用了一个解释/说明经/描写性专门术语

句子同位语（1）：the Panaramitee style

句子同位语（2）：a label

句子同位语（2）定于从句：which takes its name from the extensive rock pavements at Panaramitee North in desert South Australia

修饰ROCK PAVEMENT 的定语从句：which are covered with motifs pecked into the surface.