DOI: 10.1002/2016GL069868
论文题名: The self-secondary crater population of the Hokusai crater on Mercury
作者: Xiao Z. ; Prieur N.C. ; Werner S.C.
刊名: Geophysical Research Letters
ISSN: 0094-8855
EISSN: 1944-8586
出版年: 2016
卷: 43, 期: 14 起始页码: 7424
结束页码: 7432
语种: 英语
英文关键词: impact cratering
; Mercury
; secondary craters
Scopus关键词: Deposits
; Floors
; Mercury (metal)
; Age determination
; Complex craters
; Crater population
; Impact cratering
; Impact craters
; Impact melt
; Melt pool
; Secondary craters
; Mercury deposits
; age determination
; crater
; ejecta
; impact
; Mars
; Mercury (planet)
; Moon
; sedimentation
; solidification
英文摘要: Whether or not self-secondaries dominate small crater populations on continuous ejecta deposits and floors of fresh impact craters has long been a controversy. This issue potentially affects the age determination technique using crater statistics. Here the self-secondary crater population on the continuous ejecta deposits of the Hokusai crater on Mercury is unambiguously recognized. Superposition relationships show that this population was emplaced after both the ballistic sedimentation of excavation flows and the subsequent veneering of impact melt, but it predated the settlement and solidification of melt pools on the crater floor. Fragments that formed self-secondaries were launched via impact spallation with large angles. Complex craters on the Moon, Mercury, and Mars probably all have formed self-secondaries populations. Dating young craters using crater statistics on their continuous ejecta deposits can be misleading. Impact melt pools are less affected by self-secondaries. Overprint by subsequent crater populations with time reduces the predominance of self-secondaries. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979735985&doi=10.1002%2f2016GL069868&partnerID=40&md5=cb1e13c3de822b4abc381ec8944a9d5e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9818
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Planetary Science Institute, School of Earth Sciences, China University of Geosciences, Wuhan, China
Recommended Citation:
Xiao Z.,Prieur N.C.,Werner S.C.. The self-secondary crater population of the Hokusai crater on Mercury[J]. Geophysical Research Letters,2016-01-01,43(14).