Volcanism following the initiation of subduction is vital to our understanding of this specific magma-generation environment. This setting is represented by the first development of the Izu-Bonin-Mariana arc system as subduction commenced along the Western Pacific margin in the Eocene. A new collection of volcanics recovered from the islands and exposed crustal sections of the Bonin Ridge span the first 10 Myr of arc evolution. An elemental and radiogenic isotope dataset from this material is presented in conjuction with new ⁴⁰Ar/³⁹Ar ages and a stratigraphic framework developed by a detailed mapping campaign through the volcanic sections of the Bonin Islands.

中文翻译：

---

俯冲引发后弧和平板的地球化学演化：日本波宁群岛的记录

俯冲作用开始后的火山作用对于我们对这种特定的岩浆生成环境的理解至关重要。随着俯冲在始新世的西太平洋边缘开始俯冲，伊祖-波宁-马里亚纳弧系的首次发展便代表了这一背景。从岛屿和波宁岭的裸露地壳部分中发现的新火山集合跨越了弧演化的前10 Myr。结合新的⁴⁰ Ar / ³⁹ Ar年龄和详细的制图运动通过波宁群岛的火山区开发的地层学框架，给出了该材料的元素和放射性同位素数据集。