Table 3. Mineralogya of the clay fraction of the GOR paleosol chronosequence. 

Horizon	MH	I	Q	Gi	H	Go	Py	Ma	Pl	
										
Ah1	x	--	xx	tr	tr	--	tr	tr	x	
Ah2	x	--	x	tr	tr	tr	tr	tr	x	
Ah3	--	--	--	tr	tr	tr	x	tr	tr	
Ah4	--	tr	x	tr	tr	x	x	--	x	
2Bw1	x	--	tr	tr	tr	x	tr	--	x	
2Bw2	x	tr	tr	tr	tr	x	tr	tr	x	
2Cox1	tr	--	tr	x	tr	x	tr	--	x	
2Cox2	tr	tr	tr	tr	--	--	--	--	x	
3Ahb	--	--	x	tr	tr	--	tr	--	tr	
4Btb	--	--	x	x	tr	tr	tr	--	tr	
4Cb	--	--	x	x	tr	tr	tr	--	tr		
GOR64

GOR68
Ah1	--	--	xx	--	tr	tr	x	tr	x	
Ah2	--	--	xx	--	--	tr	tr	--	x	
2Bwm1	--	tr	x	--	--	tr	x	tr	x	
2Bwm2	--	tr	x	--	--	--	tr	--	tr	
3Cox	--	tr	xx	--	--	--	x	tr	x	
4Ahb	--	--	x	--	x	tr	x	tr	x	
5Bwb1	--	--	xx	tr	x	x	--	tr	x	
5Bwb2	--	--	xx	tr	x	x	--	tr	x	
6Coxbm	--	--	x	--	tr	tr	x	tr	xx	

GOR69
Ah1	tr	--	x	tr	x	--	x	--	x	
Ah2	tr	--	x	tr	x	tr	tr	tr	x	
2Bwm1	x	--	--	tr	tr	tr	--	--	tr	
2Bwm2	x	--	x	x	x	tr	tr	--	tr	
3Ahb	--	tr	x	tr	tr	tr	tr	tr	tr	
4Btb	--	--	x	tr	x	tr	x	--	x	
4Cb	tr	--	tr	--	tr	x	--	tr	xxx	

	aMinerals are metahalloysite (MH), illite (I), quartz (Q), gibbsite (Gi), hematite (H), goethite (GO), pyroxene (Py), magnetite (Ma) and plagioclase (Pl). Semi-quantitative mineral amounts are calculated as follows: --nil, tr=trace, x=small amount, xx= medium and xxx=abundant.