Geochemistry of Valanginian samples
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Marine and terrestrial sediments of the Valanginian age display a distinct positive d13C excursion, which has recently been interpreted as the expression of an oceanic anoxic...
凡兰吟阶（Valanginian）的海相及陆相沉积物均呈现出显著的d¹³C正偏移，近期该偏移被解读为海洋缺氧（oceanic anoxic）现象的表征……
