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1989年地球科学:每年12月,Science News把被认为各学科在当年发生的重大事件和进展列成一览表发表。其中包括地球科学和古生物学。无疑,这样的一览表在某种程度上说是主观的,它反映了引起地球科学编者所关注的部分内容,不过,对许多选择的项目很少会有不同意见。在地学方面,有以下几项:(1)1989年8月,一次5.2级地震沿着加利福尼亚圣克鲁斯山的圣安德烈斯断层发生,两个月以后,又有一次7.1级的地震在其近处发生,这是自1906年以来在该区发生最严重的一次地震。然而,10月份的这次地震尽管已经造成了大的破坏,但是,仍然没有使该区很多其它具危险性的断层释放应力,该区仍处于
1989 Earth Science: In December each year, Science News publishes a list of major events and developments that were deemed to have taken place during the year in all disciplines. These include geosciences and paleontology. Undoubtedly, such a list is subjective to some extent, reflecting some of the issues that have drawn the attention of earth science editors, although there is very little disagreement on many options. In geology, there are the following: (1) In August 1989, a magnitude 5.2 earthquake occurred along the San Andres Fault in Santa Cruz Mountains, California. Two months later, another 7.1 earthquakes In its immediate vicinity, this is the worst earthquake in the area since 1906. However, the earthquake in October, despite the considerable damage already done, did not relieve the stress of many other potentially dangerous faults in the area,