Supplemental Table 1. Radiocarbon Data

Noriega, et al. Stream Channel Offset and Late Holocene Slip Rate of the San Andreas Fault at the Van Matre Ranch Site, Carrizo Plain, California

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.