Das jungpleistozäne Lössprofil von Nussloch (SW-Wand) im Aufschluss der Heidelberger Zement AG
Das jungpleistozäne Lössprofil von Nussloch (SW-Wand) im Aufschluss der Heidelberger Zement AG
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Das jungpleistozäne Lössprofil von Nussloch (SW-Wand) 在 Heidelberger Zement AG 的 Aufschluss der Heidelberger Zement AG
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
W. Rähle
中科院分区：
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作者：
E. Bibus;M. Frechen;Michael Kösel;W. Rähle
在海德堡以南的努斯洛赫地区，对最近暴露的新黄土墙进行了土壤学调查。对这些剖面进行了多学科研究，包括粒度光谱、有机物和碳酸盐含量、磁化率以及生物形态学和软体学以及红外光刺激发光（IRSL）。晚更新世下部包括细分的峨眉古土壤和厚约18 m的乌尔棉黄土。可以检测到 Bt 层、富含腐殖质的层（“Humuszone”）和几个不同强度的苔原灰土（“Nassboden”），有或没有 Bw 层。黄土中夹有五种棕壤（WB2 – WB6）。正如软体动物光谱所证明的那样，棕色土壤 WB2、WB4 和 WB5 与间期相关。此外，WB1 与三个早期乌尔眠间质层之一（“Mosbacher Humuszone”）相关。土壤WB1的年龄估计约为75 ka BP，代表了缩减的早乌尔眠序列。最密集的棕壤 (WB4) 具有北极棕壤的典型土壤标准，这很可能与约 30 ka 历史的 Lohne 土壤 (“Lohner Boden”) 相关。覆盖洛讷土的乌尔眠晚期黄土厚约 12 m，夹有至少 10 个苔原灰土。相当于 E2-纳斯博登的地区形成了苔原灰土复合体，还包括弱棕壤 WB5 和 WB6。最年轻的上乌尔棉黄土约 4.50 m 厚，覆盖了 Eltville 火山灰，并被指定为与 E4/E5 复合体相关。古土壤学结果与软体动物学和磁化率的结果和解释非常一致，能够进行详细的地层和古气候重建。
At the Nussloch section located south of Heidelberg, a more recently exposed new loess wall was pedologically investigated. The profiles were investigated multidisciplinarily including grain-size spectra, organic and carbonate content, magnetic susceptibility, as well as biomorphology and malacology and infrared optically stimulated luminescence (IRSL). The lower part of the Late Pleistocene includes the subdivided Eemian paleosol and the Wuermian loess about 18 m thick. A Bt horizon, a humic-rich horizon (“Humuszone”) and several tundra gleysols (“Nassboden”) of different intensity, with and without Bw horizons could be detected. Five brown soils (WB2 – WB6) are intercalated in the loess. The brown soils WB2, WB4 and WB5 correlate to interstadial periods, as evidenced by the mollusc spectra. Furthermore, WB1 correlates to one of the three Early Wuermian interstadials (“Mosbacher Humuszone”). Soil WB1 with an age estimate of about 75 ka BP represents the reduced Early Wuermian sequence. The most intensive brown soil (WB4) has the typical soil criteria of an arctic brown soil, which most likely correlates to the about 30 ka old Lohne Soil (“Lohner Boden”). The Late Wuermian loess covering the Lohne Soil is about 12 m thick and intercalated by at least ten tundra gleysols. The equivalent of the E2-Nassboden forms a tundra gley complex including also the weak brown soils WB5 and WB6. The youngest Upper Wuermian loess about 4.50 m thick covers the Eltville tephra and is designated to correlate to the E4/E5 complex. The paleopedological results are in excellent agreement with the results and interpretation by means of malacology and magnetic susceptibility enabling detailed stratigraphic and paleoclimatic reconstruction.