Siliciclastic sediment volumes and rates of the North Pyrenean retro-foreland basin,Basin Research

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Siliciclastic sediment volumes and rates of the North Pyrenean retro-foreland basin
Basin Research ( IF 2.8 ) Pub Date : 2022-03-15 , DOI: 10.1111/bre.12665
Alexandre Ortiz ₁ , François Guillocheau ₁ , Cécile Robin ₁ , Eric Lasseur ₂ , Justine Briais ₂ , Charlotte Fillon ₃

Affiliation

Sediment accumulation rates in foreland basins result from a complex interplay between surface and deep processes in both the exhumed relief domain and sedimentary basins. The growth and decay of a mountain belt during orogenic and post-orogenic phases have been largely studied, thanks to thermochronological and structural studies. The sedimentary response of the orogenic phases in the preserved sediments of the surrounding basins is well known in terms of sedimentary filling patterns and architecture, but much less better quantified. Here, we performed a measurement of the siliciclastic sediment volumes of the Pyrenean retro-foreland basin—the Aquitaine Basin and the Bay of Biscay during Cenozoic times—for a better understanding of the erosion and the sediment transfer and deposition during the convergence (syn-orogenic) to post-convergence (post-orogenic) periods of the Pyrenees Mountain. The measurement of the compacted siliciclastic sediment is based on sediment thickness (isopach) maps of known lithologies, derived from the interpretation of 40,000 kms of seismic profiles. Thanks to the siliciclastic sediment volumes quantification and a well-known retro-foreland basin tectono-sedimentary evolution, we bring quantitative results as:

中文翻译：

北比利牛斯后前陆盆地硅质碎屑沉积物体积和速率

前陆盆地的沉积物积累速率是由挖掘出的浮雕域和沉积盆地的地表和深层过程之间复杂的相互作用造成的。由于热年代学和结构研究，在造山和造山后阶段山带的生长和衰变得到了广泛的研究。周围盆地保存下来的沉积物中造山相的沉积响应在沉积填充模式和结构方面是众所周知的，但量化的更好。这里，我们测量了新生代比利牛斯山脉后前陆盆地（阿基坦盆地和比斯开湾）的硅质碎屑沉积物体积，以便更好地了解辐合过程中的侵蚀以及沉积物转移和沉积（同造山带）到比利牛斯山脉的汇合后（造山后）时期。压实硅质碎屑沉积物的测量基于已知岩性的沉积物厚度（等厚）图，源自对 40,000 公里地震剖面的解释。由于硅质碎屑沉积物体积量化和著名的逆前陆盆地构造沉积演化，我们得出的定量结果如下：压实硅质碎屑沉积物的测量基于已知岩性的沉积物厚度（等厚）图，源自对 40,000 公里地震剖面的解释。由于硅质碎屑沉积物体积量化和著名的逆前陆盆地构造沉积演化，我们得出的定量结果如下：压实硅质碎屑沉积物的测量基于已知岩性的沉积物厚度（等厚）图，源自对 40,000 公里地震剖面的解释。由于硅质碎屑沉积物体积量化和著名的逆前陆盆地构造沉积演化，我们得出的定量结果如下：

更新日期：2022-03-15

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