The Difference between Jurassic and Cretaceous Cherts in Central Europe and Its Heat Treatment befor

来源 :地质学期刊(英文) | 被引量 : 0次 | 上传用户:sophiechenq
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Rock-magnetic methods prove that the cultures in Moravia (Europe) 15,000 - 11,500 years ago might know the technique how to enhance knapping properties of Jurassic chert and Cretaceous flint in order to make stone tools.
其他文献
西班牙《国家报》2月15日报道,欧洲议会14日就建立外资审查机制法案进行表决,最终以500票赞成、49票反对和56票弃权结果通过法案。预计欧洲理事会将于3月5日批准法案。该法案
The sedimentary phosphate of marine origin mark the Paleo-Eocene period in the region of Tebessa, as elsewhere in northern Africa. The study sector of El Kouif
Iran has a various salt structures that their tectonic geomorphology is subject of this paper. Geologic situation of salt structures in Iran have determinate. A
Pushed by the results of a preceding publication on the possibly Quaternary Jebel Waqf as Suwwan Meteorite Crater, Jordan [5], where an amazing coincidence of R
当前,媒体融合正从相加走向相融、从理念变为行动、从愿景转为现实,并持续向“深水区”挺进。9月19日,中宣部在上海召开媒体深度融合现场推进会,认真学习领会和贯彻落实习近平总
期刊
根据海关统计,1-2月进出口4.54万亿元,同比(下同)增长0.7%。其中,出口2.43万亿元,增长0.1%;进口2.12万亿元,增长1.5%;顺差3086.8亿元,收窄8.7%。(按美元统计,1-2月,我国进出
In this research the fault parameters causing the September 27, 2010 Kazeron Earthquake with a magnitude of MW = 5.8 (BHRC) were determined using the random fin
目的探讨等比重罗哌卡因蛛网膜下腔阻滞麻醉(腰麻)用于肛门直肠手术的麻醉效果。方法ASAⅠ~Ⅱ级肛门直肠手术患者60例,随机法分成2组,分别采用0.5%布比卡因等比重(布比卡因组)和0.