Table 1. Particle size distributions in the GOR paleosol chronosequence.  

Site	      Horizon	          Depth	         Sand (%)		Silt (%)       Clay (%)	Mean
				(cm)	        (2mm-63µm)	(63-2µm)     (<2μm)	phia

GOR64	Ah1		0-21		27.0		39.9		33.1	7.0
		Ah2		21-36		25.2		39.0		35.8	7.2
		Ah3		36-52		20.7		41.9		37.4	7.9
		Ah4		52-69		10.7		51.4		37.9	 8.2
	           2Bw1		69-91		35.7		35.4		28.9	 6.1
	           2Bw2		91-107		29.3		46.1		24.6	 6.3
	           2Cox1		107-170	36.4		38.7		24.9	 5.8
	           2Cox 2		170-210	34.8		38.1		27.4	 6.1         
	           3Ahb		210-220	22.0		63.5		14.5	 6.3
	           4Btb		220-235	13.5		55.9		30.6	 8.0
	           4Cb		235+		

GOR68	Ah1		0-16		38.6		37.7		23.7	  5.6
		Ah2		16-36		31.4		37.3		31.3	  6.4
	           2Bw1		36-51		41.9		38.4		19.7	  5.4
	           2Bw2		51-91		45.8		36.6		17.6	  4.8
	           3Cox		91-117		88.4		  7.9		  3.7	  1.3
	           4Ahb		117-125	28.9		53.6		15.5	  5.5
	           5Bwb1		125-170	34.2		53.9		11.9	  5.4
	           5Bwb2		170-210	55.2		43.7		  1.1	  3.9
	           5Coxbm	210+		64.6		44.3		  1.1	  2.9	

GOR69	Ah1		0-19		35.6		41.8		22.6	  6.0
		Ah2		19-32		32.2		32.2		35.6	  6.6
	           2Bwm1		32-66		39.8		36.0		24.2	  5.7
	           2Bwm2		66-104		34.4		40.0		25.6	  6.1
	           3Ahb		104-116	39.5		31.0		29.5	  6.2
	           4Btb		116-129	15.5		39.6		44.9	  8.6
	           4Cb		129+		42.8		46.6		10.6	  5.4	

aMean phi  = Σ25th+50th+75th percentiles/3.