摘要
柴达木盆地第三纪磁性地层剖面由西岔沟和路乐河东沟地面露头剖面联接而成,厚5490m,上覆层为第四纪下更新世七个泉组,下伏层为白垩纪犬牙沟群。经古地磁样品采集、加工、测试、对比后建立的磁性柱厚5245m,划分出从第29极性时起至第3极性时止共83个正、反极性时段,分别代表着古新统、始新统、渐新统、中新统和上新统等五套地层,提供了距今65Ma至2.Ma的磁性地层年代表。
This profile is composed of two outcrops at Xichagou and Donggou, Lulehe, being 5490m thick. Tertiary formations are overlain by lower Pleistocene Qigequan formation,and underneath by Cretaceous Quanyagou group. A 5245m thick paleomagnetic profile has been established, after sampling, processing, examination and correlation. Eighty-three positive and negative polar time intervals from 29th to the 3rd polar time intervals are recog-nized. They represent Paleocene, Eocene, Oligocene, Miocene and Pliocene series respectively. A paleomagnetic stratigraphic time scale from 65 Ma to 2.8 Ma is presented.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1992年第2期97-101,共5页
Acta Petrolei Sinica
基金
国家自然科学基金
