火山岩

The data show the following ages: 1894±17 Ma and 1847±59 Ma for garnet pyroxenite of the Tiantangshan Group complex, indicating a Paleoproterozoic age; 1462±28 Ma for the metabasic volcanic rocks of the Yunkai Group complex, indicating the presence of fragments of the Meso- and Neoproterozoic oceanic crust in the Yunkai area; 906±24 Ma for the granitic gneiss intrusion is, which should be the product of the global Grenville collisional orogeny occurring around 1000 Ma BP. In addition, an inherited detrital zircon age of 2702±13 Ma was also obtained, which is the oldest age in the Yunkai area and even in Cathaysia, proving the presence of Neoarchean continental crustal material in Cathaysia.

获得天堂山岩群石榴辉石岩的形成年龄为1894Ma±17Ma和1847Ma±59Ma，表明其时代为古元古代；云开岩群洋中脊型变质基性火山岩的喷发年龄为1462Ma±28Ma，证明该地区存在中元古代的古洋壳残片；获得花岗质片麻岩的侵入年龄为906Ma±24Ma，应为1000Ma前后发生的全球性Grenville期造山作用的产物，并获得2702Ma±13Ma的继承碎屑锆石年龄，这是云开地区乃至华夏古陆目前获得的最古老年龄，证明华夏古陆曾存在新太古代陆壳物质。

These complicated volcanic rocks might have resulted from strike-shift and angled subduction of Faralong, Izanagi and Kula plates relative to Asian continent and the NE-NNE trending strike-shift shearing and extension generated from the plates movement.

本区复杂的火山岩很可能是晚中生代时期古太平洋巨大板块中Faralong、Izanagi、Kula等板块相对亚洲大陆走滑和斜向俯冲及在大陆内产生的NE－NNE向平移剪切－伸展拉张的结果。

People in Albay province, about 466 kilometers (290 miles) south of the capital, Manila, flocked to town centers to catch a glimpse of glowing lava cascading down the slopes of Mayon.

在距首都Manila南约446公里的Albay省的人们，成群地涌入镇中心意图一瞥灼热的火山岩沿Mayon的坡面滚落而下。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。