Electronic Supplement to
Stream Channel Offset and Late Holocene Slip Rate of the San Andreas Fault at the Van Matre Ranch Site, Carrizo Plain, California

by Gabriela R. Noriega, J Ramón Arrowsmith, Lisa B. Grant, and Jeri J. Young

Supplemental Table 1. Radiocarbon Data

UCI AMS #	Sample name	Other ID	AMS del 13C (per mil)	+/-	Fraction Modern	+/-	D14C (per mil)	+/-	14C age (BP)	+/-	DEL 14C	+/-
9309	UCIG3672	T6'_3*	-8.5	0.7	1.0453	0.0057	45.3	5.7	-350	45	38.5	5.7
9310	UCIG3673	T6'_4	-18.9	0.1	0.9018	0.0021	-98.2	2.1	830	20	-104.1	2.1
9311	UCIG3676	T7_4*	-6.0	0.3	0.7938	0.0016	-206.2	1.6	1855	20	-211.4	1.6
9314	UCIG3677	T7_5 snail*	-10.9	0.3	0.9243	0.0019	-75.7	1.9	635	20	-81.7	1.9
9315	UCIG3680	T8_3	-9.7	0.1	0.9158	0.0019	-84.2	1.9	705	20	-90.1	1.9
9316	UCIG3681	T8_4	-18.5	0.3	0.9246	0.0019	-75.4	1.9	630	20	-81.4	1.9
9319	UCIG3682	T8_5	-19.0	0.3	0.9192	0.0018	-80.8	1.8	675	20	-86.8	1.8
9320	UCIG3683	T8_6 snail*	-1.8	0.3	0.8227	0.0016	-177.3	1.6	1570	20	-182.6	1.6
9321	UCIG3684	T8_7 snail*	-1.8	0.2	0.9294	0.0023	-70.6	2.3	590	25	-76.6	2.3
9322	UCIG3685	T8_8*	-18.5	0.2	0.8937	0.0018	-106.3	1.8	905	20	-112.1	1.8
9325	UCIG3686	T8_9	-11.4	0.2	0.9204	0.0018	-79.6	1.8	665	20	-85.6	1.8
9326	UCIG3687	T8_10	-7.5	0.2	0.9193	0.0018	-80.7	1.8	675	20	-86.7	1.8
9327	UCIG3688	T8_11	-14.6	0.2	0.9057	0.0022	-94.3	2.2	795	20	-100.2	2.2
9329	UCIG3712	vmr_uss modern snail*	-5.3	0.2	0.9339	0.0020	-66.1	2.0	550	20	-72.2	2.0
9330	UCIG3738	T8_1	-16.8	0.2	0.9260	0.0023	-74.0	2.3	615	25	-80.0	2.3
9331	UCIG3739	T8_2	-22.2	0.7	0.9245	0.0024	-75.5	2.4	630	25	-81.5	2.4
9596	UCIG3778	SR5156 bone	-14.7	0.1	0.0034	0.0002	-996.6	0.2	45730	400	-996.7	0.2
9599	UCIG3669	T2_1(B)**	-24.3	0.4	1.1421	0.0036	142.1	3.6	-1065	30	134.7	3.6

Notes:

• Radiocarbon concentrations are given as fractions of the Modern standard, D14C, conventional radiocarbon age and DEL14C, following the conventions of Stuiver and Polach (Radiocarbon, v. 19, p.355, 1977).
• Sample preparation backgrounds have been subtracted, based on measurements of 14C-free coal (organics), calcite (carbonate) and Whale bone (bone - UCIG# 3778).
• AMS - d13C values were measured on prepared graphite using the AMS spectrometer. These can differ slightly (typically by 1-3 per mil) from those of the original material, if fractionation occurred during sample graphitization.
• *Excluded dates. USS: undisturbed surface snail
• **Bone sample. Excluded.

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