Supplementary Table S1: Luminescence dates for the Southern and West coasts. (*IRSL= Infrared-Stimulated Luminescence). 

LOCALITY	DEPTH (m)	        COORDINATES	OSL AGE (ka)	AUTHOR	
		X
	Y			
NAHOON (East London, Fig. 2A)				117.3 ±6.2	Jacobs & Roberts 2009	
				115.8 ±7.5		
				122.2 ±5.9		
WILDERNESS
(CENTRAL SOUTH COAST-Fig. 2A)					Bateman et al. (2011)	
Sedgefield Ridge1	2.2	34o02’          	22o48’	2.35 ±0.13		
	4.2    	34o02’          	22o48’	3.02 ±0.17		
	5.2    	34o02’          	22o48’	2.91 ±0.16		
	6.1        	34o02’          	22o48’	2.54 ±0.14		
	7.1	34o02’     	22o48’	2.64±0.16		
	8.1	34o02’     	22o48’	2.96 ±0.16		
	9.2	34o02’     	22o48’	3.13 ±0.17		
Sedgefield Ridge2	2.0	34o02’     	22o48’	0.54 ±0.06		
	4.0	34o02’     	22o48’	0.50 ±0.07		
	6.0	34o02’     	22o48’	1.39 ±0.09		
	8.0	34o02’     	22o48’	1.66 ±0.09		
						
Castle Rock	2.8  	34o04’29’’ 	23o01’14’’	6.9 ±0.4		
	5.3	34o04’29’’ 	23o01’14’’	89 ±6		
	14.4	34o04’29’’ 	23o01’14’’	131 ±7		
	17 2	34o04’29’’ 	23o01’14’’	120 ±7		
	35 6	34o04’29’’ 	23o01’14’’	126 ±7		
						
Tulleken Quarry	8.1	33o59’47’’ 	22o40’28’’	133 ±9		
	9.15	33o59’47’’ 	22o40’28’’	142 ±7		
	13.05	33o59’47’’ 	22o40’28’’	149 ±9		
	16.15	33o59’47’’ 	22o40’28’’	129 ±7		
						
East Eilandvlei	46.1	33o59’     	22o 38’	128 ±7		
	26 0	33o59’     	22o 38’	127 ±8		
	46.1	33o59’     	22o 38’	120 ±7		
	41.5	33o59’     	22o 38’	129 ±8		
	14.2	33o59’     	22o 38’	114 ±6		
	4.9	33o59’     	22o 38’	110 ±6		
						
Buffels Bay	5 3	34o4’      	22o58’	86 ±5  		
	7 3	34o4’      	22o58’	91 ±5		
		
Groenvlei area	17.2	34o03’     	22o54’	79 ±9		
	28.1	34o03’     	22o54’	102 ±5   		
	24.3	34o03’     	22o54’	82 ±5		
	35.2	34o03’     	22o54’	91 ±5		
						
Kleinkrantz	28.6	34o 0’     	22o 39’	131 ±7  		
	29 1	34o 0’     	22o 39’	133 ±7		
		
Gerickespunt area	125.5	34o02’     	22o45’	138 ±8    		
	127.7	34o02’     	22o45’	143 ±8		
	128.4	34o02’     	22o45’	148 ±10		
	128.7	34o02’     	22o45’	112 ±6		
	127.6	34o02’     	22o45’	123 ±6		
	126.8	34o02’     	22o45’	154 ±8		
	126.4	34o02’     	22o45’	149 ±8		
	128.3	34o02’     	22o45’	129 ±7		
	65 0	34o02’     	22o45’	112 ±6		
	81 0	34o02’     	22o45’	132 ±7		
	130	34o02’     	22o45’	392 ±5		
		
Eastern Swartvlei	136	33o 59’    	22o46’	231 ±15  		
	136	33o 59’    	22o46’	184 ±12		
	0.5	33o 59’    	22o46’	139 ±8		
	57.2	33o 59’    	22o46’	142 ±18		
	64	33o 59’    	22o46’	160 ±10		
	1.3	33o59’    	22o46’	131 ±7		
		
Western Swartvlei	24.8	33o59’    	22o44’	154 ±9		
	2.6	33o59’    	22o44’	93 ±6		
	44.2	33o59’    	22o44’	165 ±10		
		
Rondevlei	2.75	33o59’    	22o42’	138  ±7  		
	4.2	33o59’    	22o42’	163  ±8		
		
Protea Ridge	0.5	33o58’    	22o42’	128 ±7   		
		
Goukamma	166	34o02’    	22o56’	250 ±13   		
	123	34o02’    	22o56’	247 ±15		
		
North Swartvlei 	39.6	33o59’...  	22o46’	205 ±11		
	40.8	33o59’...  	22o46’	>149		
	
					Bateman et al. (2008)	
Sedgefield	20.5	34o02’56’’	22o50’14’’	1.87 ± 0.27		
	21.1	34o02’56’’	22o50’14’’	2.55 ± 0.2		
					Bateman et al. (2004)	
Otto Sands Quarry	0.8	33o59’60’’	22o40’55’’	10.7 ±0.5		
	5.1	33o59’60’’	22o40’55’’	73 ±3		
	2.65	33o59’60’’	22o40’55’’	90 ±4		
	7.85	33o59’60’’	22o40’55’’	128 ±6		
	
					Carr et al. (2007)	
Tulleken Quarry	1.0	33o59’46’’	22o40’35’’	21.3 ±0.97		
	1.5	33o59’46’’	22o40’35’’	39 ±1.9		
	2	33o59’46’’	22o40’35’’	84.2 ±4.3		
	2.5	33o59’46’’	22o40’35’’	104 ±5.4		
	3.0	33o59’46’’	22o40’35’’	115 ±6.6		
	3.5	33o59’46’’	22o40’35’’	125 ±6.5		
	4.0	33o59’46’’	22o40’35’’	142 ±7.2		
	4.5	33o59’46’’	22o40’35’’	129 ±6.5		
	5.0	33o59’46’’	22o40’35’’	132 ±6.8		
	5.5	33o59’46’’	22o40’35’’	157 ±7.9		
	6.0	33o59’46’’	22o40’35’’	154 ±8.2		
	
					Carr et al. (2010)	
Swartvlei Mouth	15.2	34o01’53’’	22o48’02’’	3.67 ±0.17		
	14.7	34o01’56’’	22o47’51’’	95 ±4		
	11.7	34o01’56’’	22o47’51’’	112 ±5		
	7.0	34o01’56’’	22o47’51’’	106 ±6		
	6.5	34o01’56’’	22o47’51’’	113 ±6		
	
WESTERN SOUTH COAST		
					Roberts et al. (2012)	
Mossel Bay		34o 05’28’’	22o08’24’’	374 ±30*		
		34o 05’28’’ 	22o08’24’’	394 ±32*		
		34o 12’18’’	22o 03’20’’	377 ±19*		
		34o 12’18’’	22o 03’20’’ 	401 ±23*		
		34o 05’28’’	22o08’24’’	125 ±7		
					Roberts et al. (2008)	
Still Bay East	3.0	34o21’30.5’’	21o32’17’’	8.6 ±0.4		
	4.3	34o21’30.5’’	21o32’17’’	91 ±4.6		
	38.0	34o21’30.5’’	21o32’17’’	136 ±8		
	48.0	34o21’30.5’’	21o32’17’’	140 ±8		
Still Bay West	78.1	34o21’55’’.	21o34’41’’	114±7		
	81.0	34o21’55’’.	21o34’41’’	121±7		
	82.0	34o21’55’’.	21o34’41’’	126 ±7		
	
WEST COAST					Roberts et al. (2009)	
False Bay East	2.6	34o4’19’’. 	18o39’6’’	1.68 ±0.1	

Roberts & Berger (1997)

False Bay Central	2.5	34o 4’20’’. 	18o38’47’’	131 ±6.4		
False Bay West	22	34o4’21’’. 	18o39’50’’	265 ±17		
	27.4	34o4’21’’. 	18o39’50’’	235 ±15		
	39	34o4’21’’. 	18o39’50’’	128 ±7.5		
						
Duinefontyn	1.7	33o38’49’’. 	18o24’47’’	74 ±3.4		
	6.3	33o38’49’’. 	18o24’47’’	106 ±5.2		
	15	33o38’49’’. 	18o24’47’’	70 ±3.8		
	16.7	33o38’49’’. 	18o24’47’’	139 ±9.5		
		
Langebaan Lagoon	8.0	33o08’19’’.	18o01’44’’	107 ±9.5 (IRSL)		

Supplementary Table S2: OSL dates for the East Coast (from Porat & Botha 2008).
Sample	Site	Description	Coord. (S/E)	Modal
Grain
size (m)	Clay+
Silt 
(%)	Moisture
(%)	OSL Age
(ka)	
MP-1	1	Road cut through large parabolic dune limb, 1 km west of Sihangwane store. Southern boundary fence of Tembe Elephant Park., -4m. 	27 02 45.36
32 24 36	222	4.5	2.15	8.81.0	
MP-2	1	3 m below MP-1.	27 02 45.36
32 24 36	222	4.1	2.61	12.71.8	
MP-3	2	Tembe Elephant Park, north of Ezinaleni pans,.grassy high dune limb, sampled at -3m on crest.	26 55 21.1
32 27 42.6	259	4.7	2.47	10.81.0	
MP-4	3	Tembe Elephant Park, sand forest on dune limb, 1.2 km north of MP-3 	26 54 50.5
32 28 04.5	191	8.4	1.25	23.22.2	
MP-5	11	Sileza Nature Reserve; Trig beacon 45, 103 m asl, crest of extended parabolic dune limb surrounded by sand forest. 	27 07 30.8
32 36 42.7	222	3.6	1.32	10.50.9	
MP-6	4	South of Ekupumuleni store. Dune north of Nkawankwane wetland system.	27 01 53.5
32 35 43	302	5.6	2.15	57.47.4	
MP-7	7	Lulube, nose of large extended parabolic dune standing above surrounding dune landscape.	26 52 40.4
32 48 51.6	259	5.8	1.90	7.90.6	
MP-8	5	North facing road cut, 14 km NE from the Pelindaba intersection on Tembe-KwaNgwanase road. Extended parabolic dune limb, textural lamellae in sand. 	27 01 24.4
37 40 50.9	191	4.8	2.90	33.73.4	
MP-9	9	Black Rock aeolianite promontory, large planar cross-beds above wave cut platform. Well cemented.	27 08 03.2
32 49 54.5				59.65.4	
MP-10	10	Top of coastal dune next to Black Rock staff village.	27 07 30
32 49 34.5	222	10.4	1.91	13.51.8	
MP-11	15	Lake Sibaya, steep slope defining bank of NE shore, sand pit. Truncated or constructed bank?	27 19 19.5
32 42 52.7	259	16.1	3.15	15.01.2	
MP-12	16	Baya Camp view point, crest of highest parabolic dune. 	27 22 48.6
32 40 36.4	222	6.1	0.89	7.40.6	
MP-13	19	Tshongwe, 1.75 km west of town, north of Trig beacon 32, crest of extended dune limb, red sand.	27 26 22.7
32 21 14.5	222	13.4	2.65	18.72.4	
MP-14	18	East of Tshongwe town, marginal dune limb of complex parabolic dune form.	27 25 01
32 29 21.54	222	5.5	3.22	15.41.9	
MP-15	17	South of Mseleni Hospital, highest point on dune limb. 	27 19 50.3
32 33 10.9	222	7.7	1.14	15.71.6	
MP-16	14	1 km west of Mabibi where Sibayi Fm dune migrated over KwaMbonambi Fm hummocky dunes.	27 18 33.2
32 44 2.6	222	8.0	2.07	9.00.9	
MP-17	12	East of Coastal Cashews plantation, linear extended parabolic dune limb, close to house on south side of road.	27 12 8.46
32 37 11.22	259	6.4	2.12	11.31.3	
MP-18	23	Ozabeni section. Dune on north side of round wetland, SSW of Lake Bhangazi.	27 40 8.9
32 36 24	222	11.4	1.71	6.60.5	
MP-19	22	Beach ridges in old wetland complex. Sampled between termite and aardvark burrows.	27 39 6.65
32 35 36.4	222	14.0	3.76	10.71.8	
MP-20	21	Highest dune in hummocky dune field, east of Mbazwana. 	27 30 38.2
32 36 2.22	191	8.3	3.00	7.21.1	
MP-21	27	Cape Vidal repeater station, 3m below disturbed crest of Sibayi Fm dune prograding into Lake Bhangazi south. Sand rich in heavy minerals, moderate HCl reaction.	28 07 53.5
32 32 57	259	16.5	1.97	2.30.2	
MP-22	29	South of Cape Vidal, Meersig calcrete quarry, weathered aeolianite with remnant cross-bedding. Sampled decalcified bedding plane.	28 09.877
32 32.677	164	12.8	1.86	13210	
MP-23	31	Inland margin of coastal barrier near Mission Rocks, 16.2 km S of Lake Bhangazi, 50 m east of road.	28 16 27.5
32 28 22.9	222	9.4	1.97	8.10.5	
MP-24	28	South of Cape Vidal. Partially calcified dune sand with heavy mineral lamination, exposed by slumping of barrier dune face. Sampled 2 m above beachrock ~0.5 m above sea level.	28 08 34.05
32 33 21.82	259	2.7	4.73	64.18.7	
MP-25	36	“Graded Sands” pit on east slope of Enseleni River valley, west of Richards Bay. KwaMbonambi Fm incised by river valley.	28 39 36.5
32 02 30	222	5.8	2.08	53.16.0	
MP-26	33	RBM Mining Pond C, basal red brown homogenous red sand unit with slightly harder consistency than overlying reddish sand. Sampled 1 m below contact with overlying red dune sand.	28 38 20.8
32 16 27.2	259	15.7	4.60	11.11.3	
MP-27	33	20 m above # 26, yellowish red massive dune with large-scale planar cross bedding.	28 38 20.8
32 16 27.2	259	6.1	2.33	3.60.4	
MP-28	33	Active sand pit, yellow sand with cross bedding, E of # 27. Rhizocretions. 	28 38 20.8
32 16 27.2	301	4.8	2.90	2.70.2	
MP-29	38	Cliff south of 5-Mile beach access ramp. Upper red sand unit of composite Kosi Bay Fm, 1 m above unconformity surface in underlying white mottled sands (RBM-1). MSA artifacts on unconformity surface.	28 46 32.4
32 07 49	259	19.7	5.98	10111	
MP-30	37	Sandy lens in peat horizon high up Kosi Bay Fm sand unit immediately north of 5-Mile Beach access ramp, 10 m above sea level, 4-5 m above base of white sand.	28 46 32.4
32 07 49	191	15.1	6.20	85.17.8	
MP-31	39	400 m north of Port Durnford lighthouse. Sample 1m below lignite bed in Kosi Bay Fm.	28 54 56.7
32 55 36.4	259	14.0	14.4	>27627	
MP-32	39	Kosi Bay Fm lignite bed; sampled 0.5 m above upper contact of lignite bed.	28 54 56.7
32 55 36.4	301	37.4	15.5	>29526	
MP-33		Isipingo Fm north of Reunion Rocks beach.  Sampled aeolianite from margin of pothole structure from which Last Interglacial elephant tusk retrieved (Ramsay et al., 1993), U/Th dated ~182 ka.	29 58.851
30 58.156				20313	
MP-34	1	Embankment in road cut through parabolic dune limb, 1km west of Sihangwane store, hand augered sampled 3m below road level, ie 10 m below dune crest. 	27 02 45.36
32 24 36				14.61.5	
MP-35	7	Lulube, eastern limb of large extended parabolic dune 	26 54.398
32 49.255			3.3	7.60.4	
MP-36	2	Tembe north, GPR traverse, -3m on lower eastern side of MP-3 dune. 	26 55.321
32 27.745			2.2	14.71.5	
MP-37	2	Tembe north, -4.5m lower eastern side of MP-3 dune.	26 55.321
32 27.745			2.0	21.92.8	
MP-38	2	Tembe north, -6.3m lower eastern side of MP-3	26 55.321
32 27.745			2.6	35.82.3	
MP-39	11	Sileza Trig beacon, 6m depth, ie 3m below MP-5.	27 07 30.8
32 36 42.7			2.5	11.50.7	
MP-40	20	Mbazwana diatomite quarry, –3m in light gray sand burying diatomite.	27 30.373
32 32.730			2.5	10.01.9	
MP-41	20	Mbazwana diatomite quarry, basal aeolian sand underlying brown diatomite, -10m	27 30.373
32 32.730			3.1	53.23.6	
MP-42	20	Mbazwana diatomite  gray sand above diatomite bed, -6m	27 30.373
32 32.730			2.3	13.61.2	
MP-43	25	Ozabeni trig beacon; crest of sinuous transverse dune, -3m	27 46.626
32 33.695			2.9	6.00.4	
MP-44	25	Ozabeni beacon, base of western slip face, augered to -3m to intercept buried layers.	27 46.626
32 33.695			3.9	17.31.8	
MP-45	24	Ochre Hill/ Red Sands; eroded face of coastal barrier dune, basal unit, Isipingo Fm yellowish sands with calcrete rhizoliths.	27 42.662
32 37.696			3.8	17924	
MP-46	24	Ochre Hill/ Red Sands; upper red dune sand (Sibayi Fm) above sharp contact with the yellowish calcareous sand.	27 42.662
32 37.696			3.5	5.70.7	
MP-47	24	Liefeld’s Rocks, ferruginized coarse sand, angular blocks on beach at base of coastal barrier dune.	27 44 18.648
32 37 16.364				>26213	
MP-48	30	Dead Tree Bay; undulating surface upslope of possible paleo-shorelines above Lake St Lucia.	28 09.454
32 28.141			17	11.70.9	
MP-49	32	Old RAF camp site; western margin of coastal barrier dune, crest of high transverse dune.	28 14.267
32 29.760			2.7	5.11.0	
MP-50	32	Old RAF camp site; saddle on low dune ridge west of base of high transverse dune.	28 14.181
32 29.581			2.8	6.60.6	
MAP-1	13	West of Vasi pan, Mvelabusha sand quarry; upper light gray sand layer with textural lamellae.	27 10 21
32 42 47				10119	
MAP-2	13	Mvelabusha Quarry; lower rubified sand profile	27 10 21
32 42 47				>29144	
MAP-3	8	Kosi Camp dune, eroded cliff south of camp and jetty. Sample from mid slope in gully along fence line.	27 57 35.9
32 49 34.5 				36.16.3	
MAP-4	6	KwaNgwanase dump; upper light gray sand layer above clay-enriched B2 horizon developed in underlying red/white mottled sand	26 59 10
32 44 55.44				21622	
MAP-5	6	KwaNgwanase dump; lower red/white mottled profile	26 59 10
32 44 55.44				>30170	
RBM-1	37	5-Mile Beach cliff exposure, basal Kosi Bay Formation clay-rich, mottled white/red sand	28 46 32.4
32 07 49				>36648	
RBM-2	35	Dawson Rock, yellowish sand cliff with rhizoliths	28 38
32 17 49.1				67.15.1