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High-resolution late Middle Pleistocene paleoclimatic record from the Galería Complex, Atapuerca archaeological site, Spain - An environmental magnetic approach
Quaternary Science Reviews ( IF 3.2 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.quascirev.2020.106721
M.F. Bógalo , B. Bradák , J.J. Villalaín , M. Calvo-Rathert , M.I. González , F. Heller , A.I. Ortega , J.M. Parés

Abstract The Galeria Complex is a cave sediment succession at the Atapuerca paleoanthropological site (Burgos, Spain) that offers detailed environmental information about the late Middle Pleistocene, especially the period between marine oxygen isotope stages MIS10 and MIS7. Previous studies have reconstructed the chronology and detailed the environmental development of this key succession. We introduce rock magnetic climate proxies from the sedimentary units of the Galeria succession that we correlate with the global climate record as represented by the marine oxygen isotope record. The cave sediment sequence consists of five infilling phases, four of which were sampled at high resolution across a 5 m thick composite profile. We propose a novel goethite climate proxy along with a frequently used ultrafine ferrimagnetic mineral proxy for paleoclimate reconstruction and detailed chronostratigraphic correlation with isotope stages and substages MIS10/MIS10-9, MIS9e-a and MIS8. The proxies reveal new paleoenvironmental information about paleoprecipitation and indicate that MIS9e was a humid (∼650 mm/year maximum annual precipitation) and intense interglacial in northern Spain that declined in steps into the globally weak glacial stage MIS8. MIS8 consisted of drier periods with 430–510 mm/year annual precipitation and at least one humid substage (600 mm/year).

中文翻译:

西班牙 Atapuerca 考古遗址 Galería Complex 的高分辨率晚期中更新世古气候记录 - 一种环境磁性方法

摘要 Galeria Complex 是 Atapuerca 古人类遗址(西班牙布尔戈斯)的洞穴沉积层序,提供了中更新世晚期的详细环境信息,尤其是海洋氧同位素阶段 MIS10 和 MIS7 之间的时期。先前的研究已经重建了这个关键演替的年表并详细描述了这个关键演替的环境发展。我们从 Galeria 序列的沉积单元中引入了岩石磁性气候代理,我们将其与以海洋氧同位素记录为代表的全球气候记录相关联。洞穴沉积物序列由五个填充阶段组成,其中四个阶段是在 5 m 厚的复合剖面上以高分辨率采样的。我们提出了一种新的针铁矿气候代理以及一种常用的超细亚铁磁性矿物代理,用于古气候重建以及与同位素阶段和亚阶段 MIS10/MIS10-9、MIS9e-a 和 MIS8 的详细年代地层相关性。这些代理揭示了有关古降水的新古环境信息,并表明 MIS9e 是西班牙北部的潮湿(每年最大降水量为 650 毫米/年)和强烈的间冰期,并逐步下降到全球弱冰川阶段 MIS8。MIS8 由年降水量为 430-510 毫米/年的干燥期和至少一个潮湿亚级(600 毫米/年)组成。代理揭示了有关古降水的新古环境信息,并表明 MIS9e 是西班牙北部的潮湿(~650 毫米/年最大年降水量)和强烈的间冰期,逐渐下降到全球弱冰川阶段 MIS8。MIS8 由年降水量为 430-510 毫米/年的干燥期和至少一个潮湿亚级(600 毫米/年)组成。代理揭示了有关古降水的新古环境信息,并表明 MIS9e 是西班牙北部的潮湿(~650 毫米/年最大年降水量)和强烈的间冰期,逐渐下降到全球弱冰川阶段 MIS8。MIS8 由年降水量为 430-510 毫米/年的干燥期和至少一个潮湿亚级(600 毫米/年)组成。
更新日期:2021-01-01
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