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Geoarchaeological and historical implications of late Holocene landscape development in the Carseolani Mountains, central Apennines, Italy

机译:意大利亚平宁山脉中部Carseolani山脉晚期全新世景观发展的地质考古和历史意义

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摘要

This study investigates the relationship between late Holocene landscape development and early human interaction by means of geomorphological and sedimentological analyses supported by CIS modeling operations. The selected geoarchives are sedimentary valley fills of two subwatersheds located in the upper Turano River drainage basin (60 km northeast of Rome, Italy), where humans settled at least since the earliest classic period. First the alluvial plains were identified and mapped through multiple CIS operations. Thereafter, 12 cores were taken from the alluvial plains, collecting in total 68 m of alluvial profiles. By sedimentological analyses (i.e., grain size, carbon determination) together with 36 AMS-radiocarbon dates, we identified phases when changes in the geomorphological evolution of the study area occurred. Starting around 4200 cal BP, eight distinct clusters of increased cumulated probability density functions of the ~(14)C dates were observed, representing enhanced alluvial deposition and/or fluvial activity. The shift from a phase of prevailing biostasy to a period of anthropic rhexistasy occurred after 4200 cal BP in the Rio di Riccetto and around 2200 cal BP in the more remote Ovito watersheds. Dividing the alluvial sediment volumes by the potential erosion areas and assuming a sediment delivery ratio (SDR) between 0.21 and 0.46, we obtained an average late Holocene surface lowering of 370 to 540 mm in the Rio di Riccetto and 400 to 510 mm in the Ovito watersheds. Our results show that notable land reshaping occurred in the vicinity of the city of Rome, which can be attributed to human-induced land cover changes.
机译:这项研究通过CIS建模操作支持的地貌和沉积学分析研究了全新世晚期景观发展与人类早期互动之间的关系。选定的地质档案是位于图拉诺河上游流域(意大利罗马东北60公里)的两个子集水区的沉积谷填充物,人类至少在最早的古典时期就定居于此。首先,通过多个CIS作业确定冲积平原并绘制地图。此后,从冲积平原上取走了12个岩心,总共收集了68 m的冲积剖面。通过沉积学分析(即粒度,碳含量测定)以及36个AMS-放射性碳年代,我们确定了研究区域地貌演化发生变化的阶段。从大约4200 cal BP开始,观测到〜(14)C日期累积概率密度函数增加的八个不同簇,表示冲积沉积和/或河流活动增强。在里约热内托河(Rio di Riccetto)4200 cal BP之后和更偏远的奥维托(Ovito)集水区大约2200 cal BP之后,发生了从普遍的生物稳态过渡到人类兴奋性躁狂期。将冲积沉积物体积除以潜在的侵蚀面积,并假设沉积物输送比(SDR)在0.21至0.46之间,我们在里奥迪里卡托(Rio di Riccetto)和晚卵(Ovito)的平均全新世晚期平均下沉量分别为370至540 mm和400至510 mm分水岭。我们的结果表明,在罗马市附近发生了显着的土地重塑,这可能归因于人为引起的土地覆盖变化。

著录项

  • 来源
    《Geomorphology》 |2014年第1期|26-39|共14页
  • 作者单位

    Joint Research Centre of the European Commission, Institute for Environment and Sustainability, Via E. Fermi 2749,I-21027 Ispra, VA, Italy ,Department of Earth Sciences, Physical Geography, Freie Universitaet Berlin, Malteserstrasse 74-100, Haus H, 12249 Berlin, Germany;

    Department of Earth Sciences, Physical Geography, Freie Universitaet Berlin, Malteserstrasse 74-100, Haus H, 12249 Berlin, Germany;

    Department of Earth Sciences, Physical Geography, Freie Universitaet Berlin, Malteserstrasse 74-100, Haus H, 12249 Berlin, Germany;

    Department of Earth Sciences, Physical Geography, Freie Universitaet Berlin, Malteserstrasse 74-100, Haus H, 12249 Berlin, Germany;

    Joint Research Centre of the European Commission, Institute for Environment and Sustainability, Via E. Fermi 2749,I-21027 Ispra, VA, Italy;

    Department of Earth Sciences, Physical Geography, Freie Universitaet Berlin, Malteserstrasse 74-100, Haus H, 12249 Berlin, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Carbon-14 dating; Alluvium; Geoarchives; Land use change; Human impact; GIS;

    机译:Carbon-14约会;冲积;地理档案;土地用途变化;对人类的影响;地理信息系统;
  • 入库时间 2022-08-18 03:36:31

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