Table T1. Summary of Quaternary magnetostratigraphy.

Polarity events and age	Chron boundaries	Hole 1127B depth (mbsf)	Hole 1128B depth (mbsf)	Holes 1129C, 1129D depth (mbsf)	Hole 1130B depth (mbsf)	Hole 1131A depth (mbsf)	Hole 1132B depth (mbsf)	Hole 1133B depth (mbsf)	Hole 1134A depth (mbsf)
Brunhes/Matuyama	C1n/C1r1r	343.4	14	340	200	280-300	170-181	12	32
0.78 Ma		1127B-37X-4	1128B-2H-4	1129C-37X-3	1130B-22X-4	1131A-33X-3, 4	1132B-19X-21X	1133B-3H-1	1134A-4H-6
Termination Jaramillo	C1r1r/C1r1n	380.7	20	392-402	210	308	222-229		37
0.99 Ma		1127B-41X-4	1128B-3H-2	1129D-5R-6R	1130B-23X-4	1131A-34X-3	1132B-25X, 26X		1134A-5H-4
Onset Jaramillo	C1r1n/C1r2r1r	393-395	22	435-445	212				41
1.07 Ma		1127B-42X-5, 6	1128B-3H-4	1129D-9R-10R	1130B-23X-6				1134A-5H-6
Termination Olduvai	C1r2r2r/C2n		28	540	215
1.77 Ma			1128B-4H-1	1129D-20R-3	1130B-24X-1
Onset of Olduvai	C2n/C2r		32		220
1.95 Ma			1128B-4H-4		1130B-24X-5
Termination of Gauss	C2r/C2An		40
2.5 Ma			1128B-5H-3

Note: Section numbers in site depth columns identify location of chron boundaries for each site.