Environmental Engineering Reference
In-Depth Information
(a)
3%
0.02%
0.01%
Date
251.880 Ma ± 0.0123 %
2%
0.01%
0.02%
1%
Date
1%
2%
Deccan
Traps
Siberian
Traps
3%
Karoo-Ferrar LIP
CAMP
Weighted mean
206
Pb-
238
U and plateau
40
Ar-
39
Ar dates
(b)
253
252.6 ± 0.2 Ma
Mundil
et al.
, 2004
252.5
252.5 ± 0.3 Ma
Mundil
et al.
, 2001
252.17 ± 0.06 Ma
Shen
et al.
, 2011
252
251.902 ± 0.024 Ma
Burgess
et al.
, 2014
251.5
25
1
.4
±
0.3 Ma
Bowring
et al.
, 1998
251
250.5
250
249.83 ± 0.15 Ma
Renne
et al.
, 1995
Recalculated by Reichow
et al.
, 2009
249.5
249.25 ± 0.14 Ma
Reichow
et al.
, 2009
Date of publication
Figure 4.5
(a) 2
percent
internal uncertainty on U
Pb weighted-mean
σ
-
206
Pb
39
Ar plateau dates published on the Siberian Traps
LIP, the Deccan Traps LIP, the CAMP, and the Karoo
238
U dates and
40
Ar
-
-
Ferrar LIP. Each vertical
line represents a single published plateau age or weighted-mean date, the length
of which is equal to the 2
-
percent uncertainty on that date. The black line through
the entire dataset, which is shown zoomed in the inset, is the 2
σ
percent internal
σ
uncertainty on the
206
Pb
238
U weighted-mean date de
ning cessation of the
-
