太平洋凸缘微玻璃陨石的研究  

STUDY OF A FLANGED MICROTEKTITE COLLECTED FROM THE NORTH PACIFIC

作　　者：彭汉昌[1] 刘正坤[2] 庄世杰[3] 

机构地区：[1]国家海洋局第一海洋研究所,青岛266003 [2]湖南有色金属研究所,长沙410007 [3]中国有色金属工业总公司矿产地质研究院,桂林541004

出　　处：《海洋与湖沼》1992年第6期644-646,共3页Oceanologia Et Limnologia Sinica

基　　金：国家自然科学基金;4880234

摘　　要：于1985年,一颗独特的凸缘微玻璃陨石被发现于采自北太平洋(9°33′N,167°00′W;水深4928m)深海沉积物中。使用各种分析方法对它的显微特征、微结构和化学成分进行了研究。结果表明,太平洋凸缘微玻璃陨石的形态和结构与达尔文的凸缘澳大利亚石(或玻璃陨石)和查普曼的人造凸缘玻璃陨石相似,从而揭示了玻璃陨石和微玻璃陨石的凸缘结构是由空气动力消融作用的产物。这一研究具有重要的理论和实际意义。The origin of tektite has long been controversial. Some of scientists maintained that the tektites are of earthly origin, others maintain they are of extraterrestrial origin. The flanged button tektites (flanged australites) found by Charles Darwin and the remarkable australite-like specimens of Dean R. Chapman were believed to be important evidence of the extraterrestrial origin hypothesis.A rare peculiarly flanged microtekrite was found in deep-sea sediment collected from the North Pacific (9°33'N, 167°00'W; 4928 m water depth). Various analytic methods used to studies the microscopic characteristics, microstructures and chemical compositions showed that the morphology and structures of the Pacific flanged microtektite are similar to Darwin's flanged australite and Chapman's man-made flanged tektite, and that the flanged structure of the tektite and microtektite is produced by aerodynamical ablation. This study is of important theoretical and practical significance.

关 键 词：凸缘结构 微玻璃陨石 太平洋 陨石 

分 类 号：P185.83[天文地球—天文学]