Table 12. Trace element composition of volcanic ash layers.
Note: Shipboard XRF data in parts per million (ppm).

Core, section, interval (cm)	Nb	Zr	Y	Sr	Rb	Zn	Cu	Ni	Cr	V	Ba

165-1000A-
22H-2, 57-60	7.9	236	17	497	80	50	4	14	<3	12	657
56X-CC, 18-21	8.8	176	21	322	123	45	4	7	<3	7	729
58X-2, 47-50	2.5	256	<1	1074	27	26	25	45	<3	27	250

165-1000B-
6R-4, 143-144	5.4	142	11	793	22	49	20	153	<3	39	496
11R-1, 142-145	8.4	245	7	896	61	26	7	6	<3	19	215
19R-2, 88-91	14.5	277	7	1667	43	46	5	6	<3	14	251
21R-4, 43-46	18.0	204	17	1988	48	44	5	3	<3	10	287