Late Quaternary Valley Fills and Paleoenvironments of the Southern High Plains

南部高原的晚第四纪河谷充填物和古环境

基本信息

  • 批准号:
    8803761
  • 负责人:
  • 金额:
    $ 17.7万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1988
  • 资助国家:
    美国
  • 起止时间:
    1988-08-01 至 1991-07-31
  • 项目状态:
    已结题

项目摘要

The research examines late-Quaternary sediments on the Southern High Plains for information on past environments. A number of dry valleys (draws) cross the region and have slowly filled with sediments for the past +11,000 years. Previous scattered geomorphic investigations strongly suggest synchroneity in late Quaternary depositional and soil-forming events and similar regional environmental changes. The first objective of the research is to document the late Quaternary stratigraphic histories of the draws to test the hypothesis of synchronous, regional geomorphic and soil-forming events. Another objective is to understand environmental and hydrologic changes at the end of the Pleistocene. There are marked out-of-phase hydrologic changes from flowing to standing water along and among the draws between 11,000 and 10,000 yrs. B.P. It is unclear whether these variations are due to local geomorphic conditions or environmental differences. The third objective is aimed at understanding middle Holocene environments. There appears to have been regional, massive eolian deposition at this time, suggestive of severe widespread aridity. The proposed research will help establish the late Quaternary paleoenvironmental record for a vast region (over 120,000 km), hitherto known only from a few sites. The record appears to be one of dramatic environmental changes, which is clearly the case for historic times. Understanding these past changes could help in dealing with future climatic extremes.
该研究检查了南部高平原的晚第四纪沉积物,以获取有关过去环境的信息。 许多干涸的山谷穿过该地区,并在过去 11,000 多年里慢慢地被沉积物填满。 先前的分散地貌调查强烈表明第四纪晚期沉积和成土事件以及类似的区域环境变化具有同步性。 该研究的首要目标是记录第四纪晚期地层历史,以检验同步区域地貌和土壤形成事件的假设。 另一个目标是了解更新世末期的环境和水文变化。 11,000 至 10,000 年间,沿河和河段之间存在从流动水到静止水的明显的异相水文变化。 B.P. 目前尚不清楚这些变化是由于当地地貌条件还是环境差异造成的。 第三个目标旨在了解全新世中期环境。 此时似乎出现了区域性的大规模风成沉积,表明存在严重的大面积干旱。 拟议的研究将有助于建立广阔地区(超过 120,000 平方公里)的晚第四纪古环境记录,而迄今为止仅在少数地点了解这一记录。 这一记录似乎是环境发生巨大变化的记录之一,历史时期显然就是这样。 了解过去的这些变化有助于应对未来的极端气候。

项目成果

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Vance Holliday其他文献

Vance Holliday的其他文献

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{{ truncateString('Vance Holliday', 18)}}的其他基金

Doctoral Dissertation Improvement Award: The Interaction of Long Term Canal Irrigation and Wetland Development
博士论文改进奖:长期运河灌溉与湿地开发的相互作用
  • 批准号:
    1665525
  • 财政年份:
    2017
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
DDRIG: Soil-Stratigraphy and Landscape Evolution in Subarctic Lowlands: A Paleoenvironmental Framework for Human Colonization and Occupation of Eastern Beringia
DDRIG:亚北极低地的土壤地层学和景观演化:人类殖民和占领东白令海峡的古环境框架
  • 批准号:
    1636716
  • 财政年份:
    2016
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
DIGG Proposal: Terminal Pleistocene and Early Holocene Geoarchaeology and Terrestrial Paleoecology in the Lowlands of the Middle Tanana Valley, Subarctic Alaska
DIGG 提案:亚北极阿拉斯加塔纳纳山谷中部低地的更新世末期和全新世早期地质考古学和陆地古生态学
  • 批准号:
    1107631
  • 财政年份:
    2011
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Improvement Grant: Paleoenvironmental Context of Ancestral Puebloan Demographic and Subsistence Change in West-Central New Mexico
博士论文改进补助金:新墨西哥州中西部普韦布洛人祖先人口统计和生计变化的古环境背景
  • 批准号:
    1041950
  • 财政年份:
    2010
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Research: Climate and Sea Level Control of Holocene Environments in South Florida
博士论文研究:南佛罗里达全新世环境的气候和海平面控制
  • 批准号:
    9900840
  • 财政年份:
    1999
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
ESH: Late Quaternary Paleoenvironmental Record of Small Playa-Basins on the Southern High Plains
ESH:南部高原小普拉亚盆地的晚第四纪古环境记录
  • 批准号:
    9807347
  • 财政年份:
    1998
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant
Global Change: Genesis & Paleoenvironmental Record of Dunes on the Southern High Plains
全球变化:创世记
  • 批准号:
    9218593
  • 财政年份:
    1993
  • 资助金额:
    $ 17.7万
  • 项目类别:
    Standard Grant

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