Palynological evidence for a latest Carboniferous-Early Permian glaciation in Northern Ethiopia

被引：32
|
作者：
Bussert, Robert [1 ]
Schrank, Eckart [1 ]
机构：
[1] Tech Univ Berlin, Inst Angewandte Geowissenschaften, D-10587 Berlin, Germany
来源：
JOURNAL OF AFRICAN EARTH SCIENCES | 2007年 / 49卷 / 4-5期
关键词：
glaciation; Northern Ethiopia; pollen; spores; Latest Carboniferous-Early Permian; glaciolacustrine sediments;
D O I：
10.1016/j.jafrearsci.2007.09.003
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Palynomorphs extracted from glacigenic sediments in Northern Ethiopia are latest Carboniferous-Early Permian in age. These sediments were hitherto thought to be either of Upper Ordovician or of Late Carboniferous-Early Permian age. The predominantly glaciolacustrine and glaciofluviatile sediments were deposited in glacial troughs and valleys that were eroded into Precambrian basement rocks and into Early Palaeozoic deposits, possibly equivalents of Upper Ordovician sediments in Eritrea. In the latest Carboniferous-Early Permian, glaciated uplands to the north of Ethiopia must have existed in Eritrea and/or in southern or central Saudi Arabia. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：201 / 210
页数：10
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