极地研究2013，Vol.25Issue(1)：25-34,10.DOI:10.3724/SP.J.1084.2013.00025
环南极区域古水深演化特征
A PRELIMINARY STUDY ON THE EVOLUTION OF CIRCUM-ANTARCTIC PALEOBATHYMETRY
摘要
Abstract
Paleobathymetry and historical plate position are important reference factors for studying ancient currents, ancient climate, and historical geological events. Reconstructing paleobathymetry around Antarctica first involves palinspastic reconstructions, which restore seafloor features and landmasses to their original geographic positions at a given point in time. In this paper we reconstruct the plate using the Euler rotation method described by Greiner. The Euler poles refer mainly to the finite poles based on the Atlantic-Indian Ocean hotspots reference frame described by Miiller, but some parameters have been converted. Regions where the oceanic crust was younger than the target age had to be removed. We reconstruct 15 positions of the plates in and around Antarctica since 130 Ma. Combining diverse data including bathymetric parameters, crustal age, and sediment thickness, we adjust the present-day bathymetry for the effects of thermally driven crustal subsidence, sedimentation, and isostatic rebound, and reconstruct the paleobathymetry south of 30°S. We develop paleobathymetry maps for different times, and the evolution of the Southern Ocean since 130 Ma is briefly analyzed.关键词
南极/欧拉旋转/板块重构/古水深Key words
Antarctic, Euler rotation, plate reconstruction, paleobathymetry引用本文复制引用
孙运凡,高金耀,张涛,周志远,杨春国..环南极区域古水深演化特征[J].极地研究,2013,25(1):25-34,10.基金项目
南北极环境综合考察与评估专项(CHINARE2012-01-03,CHINARE2012-03-03)和中国极地科学战略研究基金项目(20120210)联合资助 （CHINARE2012-01-03,CHINARE2012-03-03）
