http://www.sciencedirect.com/science/article/pii/S167498711100079X   总被引：1，自引：0，他引：1  

H.A. Wanas 《地学前缘(英文版)》2011,2(4):491-507

Lower Paleozoic rocks exposed in various regions of Egypt (south central Sinai, north Eastern Desert and southwest Western Desert), in addition to occurring in the subsurface such as north Western Desert and the Gulf of Suez. The Lower Paleozoic rocks in Egypt include surface and subsurface rock units of formational status. The surface rock units are the Taba, Araba and Naqus formations. The subsurface rock units include the Shifa, Kohla and Basur formations. The Infracambrian Taba Formation has been discovered recently in the outcrops of the south eastern Sinai in the Taba-Ras El-Naqab area. It is missing and/or not recognized in the subsurface. The Taba Formation consists mainly of reddish brown, unfossiliferous gravelly fine-to medium-grained sandstones cemented by kaolinite and have subordinate beds of paleosols. The Cambrian Araba Formation and its subsurface equivalent (the Shifa Formation) are essentially composed of reddish brown, fine-grained laminated sandstone and siltstone with abundant Skolithos and Cruziana sp. In contrast, the Ordovician-Silurian Naqus Formation and its subsurface equivalents (Kohla Formation and Basur Formation) are mainly composed of white, unfossiliferous, cross-bedded, medium- to coarse-grained sandstones with haphazardly distributed pebbles and cobbles. Sedimentological analysis indicates that the Araba Formation and its equivalents were deposited in a marginal-marine environment, whereas the Naqus Formation and its equivalents were laid down in a fluvio-glacial environment. Integrated stratigraphic and sedimentological studies of the Lower Paleozoic rocks permit reconstruction of the paleogeography of Egypt at that time. Egypt has been largely controlled since the Cambrian by the pre-existing structural framework of the pre-Phanerozoic basement rocks inherited from the Late Proterozoic Pan-African event. Additionally, sedimentation processes were controlled during Cambro-Ordovician times by tectonic movements, whereas glacio-eustatic control predominated during the Late Ordovician-Silurian Period. These studies suggest that most areas of Egypt were exposed lands with episodically transgression by epicontinental seas related to the paleo-Tethys. These lands formed a part of a stable subsiding shelf at the northern Gondwana margin.  相似文献   

埃及“石头记”     

杨柳 《地球》2011,(3):93-95

尽管埃及96％的上地是沙漠或半沙漠,但存若干万年之前,有不少地方,曾是水草丰茂,森林覆盖。因为在埃及到处都可以看见术化石。一些政府机构和星级宾馆,常用它们点缀庭院。我们下榻的宾馆的院墙边,芒果树下的绿草坪上,也有3座用木化石砌起的高低错落的小假山。  相似文献   

利用瞬变电磁和多频电磁方法监测地下水位及其对Hawara遗址的影响   总被引：3，自引：2，他引：1       下载免费PDF全文

Usama MASSOUD  A.M.ABBAS  H.S.A.MESBAH  El Said A.RAGAB  Ayman TAHA 《地球物理学报》2010,53(3):638-645

利用瞬变电磁（TEM）和地面电磁（GEM）方法，本文研究了埃及Hawara遗址区的地下水对遗址的影响.这个遗址包括Hawara金字塔、北区墓地、以及被称作“迷宫”的南区墓葬场所.现今Hawara遗址已经完全荒废，被耕作区和Bahr Wahba运河包围.地表水和地下水会破坏Hawara金字塔和“迷宫”遗址的地基，现在金字塔入口已被淹没至地面下约6 m深处.本文在耕作区、金字塔以及“迷宫”等三个地区进行了TEM勘察；在“迷宫”地区进行了GEM勘察.综合分析以上两种勘察数据，我们发现，农业灌溉是浸入到地下的水的主要来源；本地区地下水位随着观测点及海拔的不同，在地面以下2~7 m之间变化.  相似文献   

“金字塔之国——埃及”一节的同课异构活动     

陆弘德  郭潇潇 《地理教学》2010,(17):30-32

二、总体评价 本次同课异构教学交流活动，秉承“聚焦课堂，提升效能”的理念，围绕“金字塔之国——埃及”同一课题，分别由张宏、马煜娇、王永生、郭潇潇老师来任教，致力于搭建一个关注课堂教学效益、提高教师执教能力的平台，引导教师思考、分享、讨论、反思、改进，在相互学习中共同进步。  相似文献   

埃及艳后的末路之战——亚克兴角海战     

深蓝 《海洋世界》2010,(2):70-72

安东尼与埃及女王返回埃及后均自杀。公元前30年，屋大维灭亡埃及托勒密王朝。从此埃及不再是一个独立的国家而只是罗马的一个行省。  相似文献   

埃及动荡不会引发第四次石油危机     

白明 《湖南地质》2011,(3):72-73

目前来看,国际石油供求形势并没有发生根本性变化,最主要的因素就是在于美国的量化宽松政策导致的流动性过剩。国际金融危机之后,美国的虚拟经济畸形发展着实害人不浅，过剩的流动性使各种热钱对于炒作美国资本市场心有余悸。  相似文献   

利用SRTM绘制东Sahara大型古排水盆地及其对南埃及新发展计划的影响(英文)   总被引：2，自引：0，他引：2  

Ahmed Mohamed Youssef 《地球空间信息科学学报》2009,12(3):182-190

In the current study, the shuttle radar topography mission (SRTM) data, with～90 m horizontal resolution, were used to delineate the paleodrainage system and their mega basin extent in the East Sahara area. One mega-drainage basin has been detected, covering an area of 256 000 km2. It is classified into two sub mega basins. The Uweinate sub mega basin, which is composed of four main tributaries, collected water from a vast catchment region and drained eastward from the north, west, and southwest, starting at...  相似文献   

“埃及”一课课堂提问的设计     

曹嵘  陆弘德 《地理教学》2009,(1):21-23

沪教版本节教材没有专门讲述埃及的各种自然地理特征，而是突出了“埃及的命脉——尼罗河”和“东方伟大的航道——苏伊士运河”这两个重点。所以，教师在设计时思考的出发点是如何通过学生的学习让他们自然而然得出这两个结论，因此设想通过“提问一设疑一解疑”的过程较符合学生的学习规律。这样，“提问”成为本节课教学设计的关键之处，担负着落实重点和难点的任务。  相似文献   

“泰坦尼克”号悲剧重演——埃及客轮“萨拉姆98”号红海沉没     

朱瑾 《海洋世界》2006,(3):24-29

“如果有必要,我们愿意一直等下去。”2006年2月5日,海难后的第三天,在埃及港口城市塞法杰,遇难者家属颤抖着坐在地毯上,等待亲人的消息。尽管遇难者获救的希望越来越渺茫,但是他们仍旧不会放弃希望。  相似文献   

“农业生产和粮食问题”一节需更新的内容     

郭能读 《地理教学》1998,(2):28-28

课本、地图册和读图作业图册(均为1995年版）中的世界小麦输出方向．有些已过时。如：课本和读图作业图册中,埃及小麦输入量过小,地图册中,小麦辖往西亚而不是埃及。近年为,埃及粮食生产虽有显著发展,但赶不上人口增长的需要,特别是城市人口,以小麦为主食,需大量进口小麦,1994／1995年度,小麦进口量仅次于我国居世界第二位。  相似文献