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Interpreting the ice dynamics and palaeogeography of Cryogenian - Cambrian glacial geology of China

中国冰冻纪-寒武纪冰川地质的冰动力学和古地理解释

基本信息

批准号：
1917577
负责人：
金额：
--
依托单位：
Royal Holloway University of London
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1917577
关键词：
Interpreting ice dynamics palaeogeography Cryogenian

项目摘要

The Ediacaran to Cambrian aged Luoquan Formation (> 521 Ma, North China) comprises exquisitely preserved subglacially striated pavements, overlain by a range of subglacial to proglacial deposits. This project seeks to better understand its depositional context and processes, along with the character, extent and dynamics of its glacial ice. This will be achieved through outcrop investigation using well-established geological techniques, such as measured sections, mapping and sedimentary structure orientation. This study will improve understandings of how our past planet worked: (1) Striated pavements are globally rare upon such ancient rocks and those of the Luoquan Formation are amongst the best Precambrian examples. They yield important information about the overlying ancient ice, yet scant data is published on the Luoquan pavements and they are imminently threatened by anthropogenic destruction; (2) Whether any glacial strata of Cambrian age occur globally remains unconfirmed; (3) The North China Craton was at mid to low latitudes during Luoquan Formation deposition. The presence of sea-level ice at these latitudes during the preceding Cryogenian Period is considered diagnostic evidence of pan-global "Snowball Earth" glaciation. A sea-level depositional context for ice rafted debris of the Luoquan Formation would significantly change understandings of Ediacaran to Cambrian global climate. Study of these deposits will be complimented by comparison to preserved striated surfaces from Cryogenian strata of NW China, USA and modern surfaces of Austria.

埃迪卡拉纪至寒武纪的罗泉组（> 521 Ma，华北）包括保存完好的冰下条纹状路面，覆盖着一系列冰下至冰前沉积物。该项目旨在更好地了解其沉积背景和过程，以及冰川冰的特征、范围和动态，沿着。这将通过使用测量剖面、绘图和沉积结构定向等成熟的地质技术进行露头调查来实现。这项研究将提高对我们过去的星球是如何运作的理解：（1）在这种古老的岩石上，条纹路面是全球罕见的，罗泉组是前寒武纪最好的例子之一。它们提供了有关上覆古冰的重要信息，但有关罗泉组的资料很少，它们面临着人类活动的威胁;（2）全球是否存在寒武纪冰期地层尚未得到证实;（3）华北冰柱在罗泉组沉积时处于中低纬度地区。在上一个低温纪期间，这些纬度地区海平面冰的存在被认为是泛全球“雪球地球”冰川作用的诊断证据。罗圈组冰筏碎屑的海平面沉积背景将显著改变对埃迪卡拉纪至寒武纪全球气候的认识。这些矿床的研究将通过与中国西北部、美国和奥地利现代地表的低温期地层中保存的条纹状表面进行比较来补充。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Subglacial bedforms and landscapes formed by an ice sheet of Ediacaran-Cambrian age in west Henan, North China

DOI：
10.1016/j.precamres.2020.105727
发表时间：
2020-07
期刊：
Precambrian Research
影响因子：
3.8
作者：
Xiaoshuai Chen;H. Kuang;Yongqing Liu;Yuchong Wang;Zhenrui Yang;T. Vandyk;Daniel Paul Le Heron;Shiyan Wang;Y. Geng;H. Bai;Nan Peng;Xiaoxu Xia
通讯作者：
Xiaoshuai Chen;H. Kuang;Yongqing Liu;Yuchong Wang;Zhenrui Yang;T. Vandyk;Daniel Paul Le Heron;Shiyan Wang;Y. Geng;H. Bai;Nan Peng;Xiaoxu Xia

MACHINE LEARNING FOR CLASSIFICATION OF AN ERODING SCARP SURFACE USING TERRESTRIAL PHOTOGRAMMETRY WITH NIR AND RGB IMAGERY

使用近红外和 RGB 图像的陆地摄影测量进行侵蚀岩壁表面分类的机器学习

DOI：
10.5194/isprs-annals-v-3-2020-431-2020
发表时间：
2020
期刊：
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
影响因子：
0
作者：
Bernsteiner H
通讯作者：
Bernsteiner H

Temperate glaciation on a Snowball Earth: Glaciological and palaeogeographic insights from the Cryogenian Yuermeinak Formation of NW China