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.
句子語法結(jié)構(gòu)分析如下：

句子主語：The frequency （頻率）

修飾主語定于從句：with which certain simple motifs appear in these oldest sites
翻譯版本（1）（以這種頻率,某些簡單的裝飾圖形出現(xiàn)在這些最古老老的遺址中.）
翻譯版本（2）（某些簡單的裝飾圖形出現(xiàn)在這些最古老老的遺址中所使用的這種頻率）

句子謂語：has led rock-art researchers to adopt a descriptive term
翻譯版本（1）（這種頻率）使得石頭藝術(shù)的研究者們采用了一個(gè)描述性/敘述性的術(shù)語
翻譯版本（2）（這種頻率）導(dǎo)致巖石藝術(shù)研究者們采用了一個(gè)解釋/說明經(jīng)/描寫性專門術(shù)語

句子同位語（1）：the Panaramitee style

句子同位語（2）：a label

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

修飾ROCK PAVEMENT 的定語從句：which are covered with motifs pecked into the surface.