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古地磁学是一门新兴的学科,自五十年代以来,我国就已进行了大量的研究工作。但海洋古地磁的研究近几年才开始。中国科学院海洋研究所自1974年起,开始筹建实验室,现已具雏形,正式开始测试研究。为此,就有关问题介绍如下。 一、标本定向 海洋古地磁研究的目的是根据被测标本所提供的参数,恢复标本形成时所在海域地磁场的历史。地磁场参数是一个空间向量,因而要求待测标本必须定向。这在陆域采取手标本是很容易做到的。但目前我所采取海洋沉积物所用的重力取样管,尚无定向系
Paleomagnetism is a new discipline, and since the 1950s, a great deal of research work has been done in our country. However, the study of marine paleomagnetic has only begun in recent years. Institute of Oceanology, Chinese Academy of Sciences Since 1974, began to build a laboratory, is now a prototype, the official test and research. To this end, the relevant issues are described below. I. Specimen Orientation The purpose of the marine paleomagnetism research is to recover the history of the geomagnetic field in the sea where the specimen was formed according to the parameters provided by the specimen under test. The geomagnetic field parameter is a space vector, thus requiring the specimen to be tested to be oriented. This is easy to do with hand specimens in the land. However, at present, the gravity sampling pipe that I have taken for marine sediment has no orientation system