Re-evaluating the age of the Haughton impact event

SC Sherlock; SP Kelley; J Parnell; P Green; P Lee; GR Osinsk; CS Cockell

Re-evaluating the age of the Haughton impact event

SC Sherlock^*, SP Kelley, J Parnell, P Green, P Lee, GR Osinsk, CS Cockell

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We have re-evaluated the published age information for the Haughton impact structure, which was believed to have formed similar to 23 Ma ago during the Miocene age, and report new Ar/Ar laser probe data from shocked basement clasts. This reveals all Eocene age, which is at odds with the published Miocene stratigraphic, apatite fission track and Ar/Ar data; we discuss our new data within this context. We have found that the age of the Haughton impact structure is similar to 39 Ma, which has implications for both crater recolonization models and post-impact hydrothermal activity. Future work on the relationship between flora and fauna within the crater, and others at high latitude, may resolve this paradox.

Original language	English
Pages (from-to)	1777-1787
Number of pages	11
Journal	Meteoritics & planetary science
Volume	40
Issue number	12
Publication status	Published - Dec 2005

Keywords / Materials (for Non-textual outputs)

DEVON-ISLAND
HYDROTHERMAL SYSTEM
ARCTIC CANADA
SUDBURY STRUCTURE
FLUID INCLUSION
RIES CRATER
DRILL CORE
AR-40/AR-39
AR-40-AR-39
ROCKS

Cite this

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title = "Re-evaluating the age of the Haughton impact event",

abstract = "We have re-evaluated the published age information for the Haughton impact structure, which was believed to have formed similar to 23 Ma ago during the Miocene age, and report new Ar/Ar laser probe data from shocked basement clasts. This reveals all Eocene age, which is at odds with the published Miocene stratigraphic, apatite fission track and Ar/Ar data; we discuss our new data within this context. We have found that the age of the Haughton impact structure is similar to 39 Ma, which has implications for both crater recolonization models and post-impact hydrothermal activity. Future work on the relationship between flora and fauna within the crater, and others at high latitude, may resolve this paradox.",

keywords = "DEVON-ISLAND, HYDROTHERMAL SYSTEM, ARCTIC CANADA, SUDBURY STRUCTURE, FLUID INCLUSION, RIES CRATER, DRILL CORE, AR-40/AR-39, AR-40-AR-39, ROCKS",

author = "SC Sherlock and SP Kelley and J Parnell and P Green and P Lee and GR Osinsk and CS Cockell",

year = "2005",

month = dec,

language = "English",

volume = "40",

pages = "1777--1787",

journal = "Meteoritics & planetary science",

issn = "1086-9379",

publisher = "Wiley",

number = "12",

}

TY - JOUR

T1 - Re-evaluating the age of the Haughton impact event

AU - Sherlock, SC

AU - Kelley, SP

AU - Parnell, J

AU - Green, P

AU - Lee, P

AU - Osinsk, GR

AU - Cockell, CS

PY - 2005/12

Y1 - 2005/12

N2 - We have re-evaluated the published age information for the Haughton impact structure, which was believed to have formed similar to 23 Ma ago during the Miocene age, and report new Ar/Ar laser probe data from shocked basement clasts. This reveals all Eocene age, which is at odds with the published Miocene stratigraphic, apatite fission track and Ar/Ar data; we discuss our new data within this context. We have found that the age of the Haughton impact structure is similar to 39 Ma, which has implications for both crater recolonization models and post-impact hydrothermal activity. Future work on the relationship between flora and fauna within the crater, and others at high latitude, may resolve this paradox.

AB - We have re-evaluated the published age information for the Haughton impact structure, which was believed to have formed similar to 23 Ma ago during the Miocene age, and report new Ar/Ar laser probe data from shocked basement clasts. This reveals all Eocene age, which is at odds with the published Miocene stratigraphic, apatite fission track and Ar/Ar data; we discuss our new data within this context. We have found that the age of the Haughton impact structure is similar to 39 Ma, which has implications for both crater recolonization models and post-impact hydrothermal activity. Future work on the relationship between flora and fauna within the crater, and others at high latitude, may resolve this paradox.

KW - DEVON-ISLAND

KW - HYDROTHERMAL SYSTEM

KW - ARCTIC CANADA

KW - SUDBURY STRUCTURE

KW - FLUID INCLUSION

KW - RIES CRATER

KW - DRILL CORE

KW - AR-40/AR-39

KW - AR-40-AR-39

KW - ROCKS

M3 - Article

SN - 1086-9379

VL - 40

SP - 1777

EP - 1787

JO - Meteoritics & planetary science

JF - Meteoritics & planetary science

IS - 12

ER -

Re-evaluating the age of the Haughton impact event

Abstract

Keywords / Materials (for Non-textual outputs)

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