Montserrat (31 March 97) Dome collapse

number of samples used: 16;
size analysis technique: sieving down to 63 micron + Elzone down to 1 micron;
method used for data integration: weighted average;
unit used: phi = -log2d (d is the particle diameter in mm).


diam.	diam.	wt%	density(kg/m^3)
(phi)	(mm)		
	
-3	8	0	2600
-2	4	0	2600
-1	2	0	2600
0	1	0	2600
1	0.5000	0.56	2600
2	0.2500	3.40	2600
3	0.1250	7.55	2600
4	0.0625	44.59	2600
5	0.0313	10.92	2600
6	0.0156	19.44	2600
7	0.0078	11.83	2600
8	0.0039	1.65	2600
9	0.0020	0.06	2600
10	0.0010	0.00	2600