IEDA / DECADE Detail

Data from the Global Volcanism Program of the Smithsonian Institution

Details for: Fort Portal

These grass-covered tuff cones are among the many of the Fort Portal volcanic field in Uganda. The carbonatite lavas and tuffs were erupted from about 50 cones and maars, some of which now contain crater lakes. Photo by Nelson Eby (University of Massachusetts).

Volcano Number:	223001
Volcano Name:	Fort Portal
Country:	Uganda
Volcano Type:	Tuff cone(s)
Last Eruption:	2120 BCE
Elevation:	1615m
Tectonic Setting:	Rift zone / Continental crust (> 25 km)
Pop. within 5km:	242914
Pop. within 10km:	242914
Pop. within 30km:	498815
Pop. within 100km:	4167189
Latitude:	0.7
Longitude:	30.25

Eruption Data from the Global Volcanism Program of the Smithsonian Institution

Volcano Number	Volcano Name	Eruption Number	Activity Type	Explosivity Index Max	Explosivity Index Modifier	Activity Area	Activity Unit	Start Evidence Method	Start Date	End Date
223001	Fort Portal	14036	Confirmed Eruption					Radiocarbon (uncorrected)	-2750
223001	Fort Portal	14037	Confirmed Eruption					Radiocarbon (uncorrected)	-2120

Emissions Data from the Global Volcanism Program of the Smithsonian Institution

Sorry. No emissions data found for this volcano.

Data from the Earthchem Library

Sorry. No data exist for this volcano in the EarthChem Library.

Data from the Earthchem Portal

Sample ID	LINK	Method	Material	Rock Class	Rock Name	SiO₂ WT%	TiO₂ WT%	Al₂O₃ WT%	Fe₂O₃ WT%	FeO WT%	FeO Total WT%	MnO WT%	MgO WT%	CaO WT%	Na₂O WT%	K₂O WT%	P₂O₅ WT%	Total WT%	Ba PPM	Co PPM	Cr PPM	Cs PPM	Dy PPM	Ga PPM	Nb PPM	Ni PPM	Pb PPM	Rb PPM	Sb PPM	Sc PPM	Sr PPM	U PPM	V PPM	Y PPM	Zn PPM	Zr PPM
12	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	0.032	0.027	0			0.067	0	10.319	42.415		0	0.239	53.099
22	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	0.026	0.022	0			0.033	0	11.129	42.05		0	0.236	53.496
22	DETAILS	ICPMS_LA	Rock	Igneous Unknown Volcanic	Melilitite														298.538	0.202652	26.5379		7.676		0.182055		7.09955	0		3.37431	1687.36	1.41578	2.62817	59.6476	35.4851	0.926164
SP3	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	40.05	1.79	7.78			9.7	0.05	6.2	25.23	0.58	0.31	6.19	97.88
3	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	0.09	15.86	4.69			65.55	0.39	6.63	0				93.21
MATRIX AREA A	DETAILS	ICPMS_LA	Rock	Igneous Unknown Volcanic	Melilitite														2636.81	14.16	72.44		17.36		539.23		31.41	14.76		27.95	8383.39	11.9	109.51	66.64	164.58	668.5
2	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	0.13	15.66	4.17			67.26	0.7	6.77	0.28				94.97
UG12	DETAILS	NOT GIVEN	Rock	Igneous Exotic Volcanic	Carbonatite					7.66								7.66
UG12	DETAILS	INAA	Rock	Igneous Exotic Volcanic	Carbonatite															29.2		0.8							0.4	0		14.59
UG12	DETAILS	XRF	Rock	Igneous Exotic Volcanic	Carbonatite	13.15	1.67	2.96	3.95			0.45	8.19	35.5	0.52	0.3	3.23	69.92	2845		50			6	512	31	0	0			5930		258	54	148	671
FP17-5	DETAILS	INAA	Rock	Igneous Mafic Plutonic	Gabbro															50.3		0.7								31.5		0.28
FP17-5	DETAILS	NOT GIVEN	Rock	Igneous Mafic Plutonic	Gabbro					9.84								9.84
FP17-5	DETAILS	XRF	Rock	Igneous Mafic Plutonic	Gabbro	47	1.79	13.39	2.8			0.19	4.86	8.89	2.56	0.6	0.12	82.2	333		37.6				11	29	3	42			207		232	18	48	125
1AL	DETAILS	EMP (EPMA)	Rock	Igneous Unknown Volcanic	Melilitite	1.11					0.22	0	0	53.95				55.28
6	DETAILS	SEM	Rock	Igneous Unknown Volcanic	Melilitite	28.57	1.1	6.24			5.59	0	8.92	45.63	0.73	0.48	3.11	100
1	DETAILS	SEM	Rock	Igneous Unknown Volcanic	Melilitite	35.7	0.6	6.25			6.7	0.07	6.19	18.22	0.35	0.38	5.85	80.31
PHN 911	DETAILS	EMP (EPMA)	Rock	Igneous Exotic Volcanic	Carbonatite	28.7	0.11	0.03			0.13		0.02	61.7	2.01	0.03		92.73
PHN 911	DETAILS	EMP (EPMA)	Rock	Igneous Exotic Volcanic	Carbonatite	0.06	12.4	2.8			73.8	0.87	4.76	0.16				94.85
PHN 911	DETAILS	EMP (EPMA)	Rock	Igneous Exotic Volcanic	Carbonatite	2.27	3.4	39			32.1	1.21	17.9	1.5				97.38
PHN 911	DETAILS	NOT GIVEN	Rock	Igneous Exotic Volcanic	Carbonatite																				438						4575					749
UG22A	DETAILS	INAA	Rock	Igneous Exotic Volcanic	Carbonatite															32.2		1.1							0.4	17.3		7.81
UG22A	DETAILS	NOT GIVEN	Rock	Igneous Exotic Volcanic	Carbonatite					4.08								4.08
UG22A	DETAILS	XRF	Rock	Igneous Exotic Volcanic	Carbonatite	34.43	1.75	9.02	6.56			0.29	4.38	20.63	1.57	1.05	1.77	81.45	3109		32			12	268	39	11	20			3019		237	38	117	424
UG1	DETAILS	INAA	Rock	Igneous Exotic Volcanic	Carbonatite															32		0.6							0.3	13.2		13.5
UG1	DETAILS	NOT GIVEN	Rock	Igneous Exotic Volcanic	Carbonatite					4.3								4.3

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Data from the SESAR Database

Sorry. No data exist for this volcano in the SESAR database.

Data from the MaGa Database

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