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Archean
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太古代的
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详细解释：
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以下为句子列表：
英文: In this paper, the authors used such geophysical exploration methods as the high-precision geomagnetic method, the resistivity profiling method and the induced polarization method to synthetically study the exhausted areas of the Archean sedimentary metam
中文: 摘要应用高精度磁法、电阻率剖面法、激发化法等常规地球物理勘查方法对冀东地区太古宙沉积变质铁矿采空区进行综合研究，建立冀东铁矿采空区有效的地球物理勘查组合模型，总结不同地质环境条件下各种地球物理勘查方法在冀东铁矿采空区勘探中的适用性和有效性。
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英文: Isua's four-kilometer-wide belt of Archean rocks stretches 35 kilometers along the western edge of the bluish-gray monolith of the Greenland ice cap.
中文: 这片矿藏可不好找，它是四公里宽的太古代岩层，沿著蓝灰色格陵兰冰帽硬块的西缘延伸35公里。
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英文: Such low levels of sulfate indicate that the Archean atmosphere was virtually devoid of oxygen.
中文: 如此低的硫酸盐浓度，表示太古代大气中的氧气极为稀薄。
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英文: The minerogenetic epoch lasted from Paleoarchean to Sinian, with Neoarchean, Paleoproterozoic and Mesoproterozoic-Qingbaikouan being the culmination periods.
中文: 成矿时代从古太古代到震旦纪，但以新太古代、古元古代、中元古代－青白口纪3个地质时期为成矿高峰期。
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英文: The peak is composed of banded biotite tonalite of fine mediate grain developing in Mengshan rock suit of Fuping period of Archean era about 2.7billion years ago. It's very steep.
中文: 由27亿年左右形成的太古代阜平期蒙山岩套条带状中细粒黑云母英云闪长岩构成，柱状节理发育，差异性风化剥蚀作用强烈，组成云蒙“山”峰，俗称“挂心崛子”，形容云蒙峰之陡峻。
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