IEDA / DECADE Detail

Data from the Global Volcanism Program of the Smithsonian Institution

Details for: Agrigan

Clouds drape the flat-topped summit of Agrigan, the highest of the Marianas arc volcanoes, in this view from the south. The elliptical island is 8 km long; its 965-m-high summit is the top of a massive 4000-m-high submarine volcano, the second largest in the Mariana Islands. An elongated summit caldera is 1 x 2 km wide, 500 m deep, and is breached to the NW. The vegetated flanks of the volcano consist almost entirely of pyroclastic deposits that are more than 100 m thick on the SW flank. Photo by Dick Moore, 1990 (U.S. Geological Survey).

Volcano Number:	284160
Volcano Name:	Agrigan
Country:	United States
Volcano Type:	Stratovolcano
Last Eruption:	1917 CE
Elevation:	965m
Tectonic Setting:	Subduction zone / Crustal thickness unknown
Pop. within 5km:	0
Pop. within 10km:	0
Pop. within 30km:	0
Pop. within 100km:	0
Latitude:	18.77
Longitude:	145.67

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
284160	Agrigan	18502	Confirmed Eruption	4				Historical Observations	1917/4/9

Emissions Data from the Global Volcanism Program of the Smithsonian Institution

Sorry. No emissions data found for this volcano.

Data from the Earthchem Library

Title	Author	Release Date	DOI	Link
Bulk rock data for Marianas arc tephra	Plank, Terry	2020-11-05	10.26022/IEDA/111736	Details
Melt Inclusion data from the Marianas and Izu volcanic arcs, and Mariana Trough back-arc basin	Hauri, Erik	2021-06-29	10.26022/IEDA/112036	Details

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	Cu PPM	Dy PPM	Nb PPM	Ni PPM	Rb PPM	Sc PPM	Sr PPM	U PPM	Y PPM	Zn PPM	Zr PPM	⁸⁷Sr / ⁸⁶Sr RATIO
AGR-8B/1-5-6	DETAILS	EMP (EPMA)	Rock	Igneous Mafic Volcanic	Basalt	46.4	0.39	15.53			18.43	0.39	10.87	5.64	1.88	0.48	0.09	100
AGR-8B/1-5-6	DETAILS	SIMS	Rock	Igneous Mafic Volcanic	Basalt														23					0.47	0.13				218	0.03	3.3		6.03
AG-25A	DETAILS	INAA	Rock	Igneous Intermediate Volcanic	Andesite															42	599							131.9
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	37.92	0.02	0.12			26.1	0.47	36.12	0.22				100
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	47.67		32.1			0.8		0.11	16.24	2.19	0.13		99.24
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	49.66		30.88			0.69		0.09	14.72	3.02	0.13		99.19
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	39.63					15.02	0.23	45.88	0.19				100
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	50.56	0.41	2.45			12.22	0.35	15.05	18.15	0.23			99.42
AG-25A	DETAILS	EMP (EPMA)	Rock	Igneous Intermediate Volcanic	Andesite	50.95	0.3	4.47			4.84	0.14	16.06	23.15	0.13			100
AG-25A	DETAILS	AAS	Rock	Igneous Intermediate Volcanic	Andesite							0.26	2.3		3.46			6.02
AG-25A	DETAILS	INAA	Rock	Igneous Intermediate Volcanic	Andesite														294	32.4		0.6	160					38	135			116
AG-25A	DETAILS	TIT	Rock	Igneous Intermediate Volcanic	Andesite					8.6								8.6
AG-25A	DETAILS	XRF	Rock	Igneous Intermediate Volcanic	Andesite	55.72	1.03	15.34	3.03					7.54		1.26	0.23	84.15
AG-10-1	DETAILS	NOT GIVEN	Rock	Igneous Mafic Volcanic	Basalt																													0.70332
9-1A	DETAILS	TIMS	Rock	Igneous Mafic Volcanic	Basalt																													0.70332
9-1A	DETAILS	TIMS_ID	Rock	Igneous Mafic Volcanic	Basalt																						6.29		303
1-3	DETAILS	TIMS_ID	Rock	Igneous Mafic Volcanic	Basalt														144								12.97		328
1-3	DETAILS	XRF	Rock	Igneous Mafic Volcanic	Basalt	50.9												50.9
1-3	DETAILS	AAS	Rock	Igneous Mafic Volcanic	Basalt							0.22	5.1		2.57			7.89			14		121				14
1-3	DETAILS	FTSC	Rock	Igneous Mafic Volcanic	Basalt																									0.34
1-3	DETAILS	MS_ID	Rock	Igneous Mafic Volcanic	Basalt														142										342
1-3	DETAILS	TIT	Rock	Igneous Mafic Volcanic	Basalt					8.33								8.33
1-3	DETAILS	XRF	Rock	Igneous Mafic Volcanic	Basalt	50.9	0.8	16.6	2.99					10.46		0.73	0.17	82.65								13							51
4-4	DETAILS	TIMS	Rock	Igneous Mafic Volcanic	Basalt																													0.70348
4-4	DETAILS	TIMS_ID	Rock	Igneous Mafic Volcanic	Basalt																						12.48		274

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Data from the SESAR Database

IGSN	Object Name	Object Type	Object Class	Material	Field Name	Link
MGD0000GV	Agrigan: 04 AGRI-7	Individual Sample				Details
MGD0000GQ	Agrigan: AGRI-19-02	Individual Sample				Details
MGD0000GU	Agrigan: 04 AGRI-6x	Individual Sample				Details
MGD0000GT	Agrigan: 04 AGRI-6	Individual Sample				Details
MGD0000GR	Agrigan: 04 AGRI-4	Individual Sample				Details
KAK000019	04 AGRI-5	Specimen	Individual Sample	Rock>Igneous>Volcanic>Mafic	Tephra	Details
KAK000020	04 AGRI-7	Specimen	Individual Sample	Rock>Igneous>Volcanic>Mafic	Tephra	Details
MGD0000GS	Agrigan: 04 AGRI-5	Individual Sample				Details
MGD0000GP	Agrigan: AGRI-19-01	Individual Sample				Details
MGD0000GO	Agrigan: Lost World	Individual Sample				Details
IEMBA000X	AGR4B	Rock Powder		Rock>Igneous	Arc lavas	Details
KAK000017	AGRI-19-02	Specimen	Individual Sample	Rock>Igneous>Volcanic>Mafic	Tephra	Details
KAK000018	04 AGRI-4	Specimen	Individual Sample	Rock>Igneous>Volcanic>Mafic	Tephra	Details

Data from the MaGa Database

Error. The MaGa Web Services (http://www.magadb.net/web_services/) are down.