Structural Controls on Shallow Cenozoic Fluid Flow in the Otago Schist, New Zealand

Table 3

Whole-rock Sr-Nd isotope ratios (±2σ errors), including age correction to 20 Ma to represent a Miocene age.

Sample	Rb (ppm)	Sr (ppm)	Sm (ppm)	Nd (ppm)	^87Sr/^86Sr	±2σ	^87Sr/^86Sr (20 ma)	±2σ	^143Nd/^144Nd	±2σ	(20 ma)	^143Nd/^144Nd (20 ma)	±2σ
BRWR-1	93.5	42.7	3.33	18.1	0.71917	0.000014	0.71791	0.000014	0.51260	0.000009	-0.43	0.51259	0.000009
BRWR-2	96.8	63	4.22	21.4	0.71455	0.000017	0.71328	0.000017	0.51265	0.000012	0.41	0.51263	0.000012
BRWR-3	55.3	92.9	3.83	19.6	0.70939	0.000013	0.70890	0.000013	0.51264	0.000010	0.19	0.51262	0.000010
BRWR-4A	37.6	652	5.91	26.6	0.70639	0.000015	0.70634	0.000015	0.51262	0.000012	-0.15	0.51260	0.000012
BRWR-4B	47.4	563	5.24	22.5	0.70662	0.000011	0.70655	0.000011	0.51264	0.000010	0.17	0.51262	0.000010
BRWR-5	44.6	469	2.86	13	0.70649	0.000021	0.70641	0.000021	0.51264	0.000011	0.17	0.51262	0.000011
BRWR-6	58.8	364	3.44	16.8	0.70696	0.000011	0.70636	0.000011	0.51263	0.000010	0.06	0.51262	0.000010
BRWR-7	36.2	296	2.41	11.6	0.70689	0.000013	0.70679	0.000013	0.51264	0.000011	0.29	0.51263	0.000011
BRWR-8	73.4	350	2.6	12.6	0.70769	0.000012	0.70751	0.000012	0.51250	0.000010	-2.42	0.51249	0.000010