Bristol Bay Basin, North America Platei
| Regional Level Types | |
|---|---|
| Bristol Bay Basin | Basin |
| North America Plate | Tectonic Plate |
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Type:
Age:
66.0 Ma to present day
Geologic Time:
The Bristol Bay Basin is a large accreted Cenozoic backarc basin in southwestern Alaska. It is bordered on the north by closing structural contours coming off of folded and faulted flysch belts to the north and northeast, on the southeast by the Alaska Peninsula Fold Belt and a string of volcanoes, on the south by the Black Hills Ridge, on the west by the structural saddle between it and the Amak–St. George–Pribilof–Walrus Basin, and on the north and northwest by closing structural contours coming off of the Goodnews Arch. The Bristol Bay Basin includes the North Aleutian Basin of Worrall (1991).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities3 valid minerals.
Detailed Mineral List:
| ⓘ Ilmenite Formula: Fe2+TiO3 Localities: Reported from at least 6 localities in this region. |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Localities: Reported from at least 6 localities in this region. |
| ⓘ Magnetite var. Titanium-bearing Magnetite Formula: Fe2+(Fe3+,Ti)2O4 |
| ⓘ Native Gold Formula: Au Localities: Egegik beach Occurrence, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USA Keefers Bar; Keelers Bar Occurrence, Bristol Bay Mining District, Dillingham Census Area, Alaska, USA Unnamed Occurrence (ARDF - BB001; beach southwest of Cinder River), Lake and Peninsula Borough, Alaska, USA Unnamed Occurrence (ARDF - UG010; Bristol Bay coast north of Ugashik Bay), Lake and Peninsula Borough, Alaska, USA |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | var. Titanium-bearing Magnetite | 4.BB.05 | Fe2+(Fe3+,Ti)2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| Fe | Iron | |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Magnetite var. Titanium-bearing Magnetite | Fe2+(Fe3+,Ti)2O4 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Fossils
There are 9 fossil localities from the PaleoBioDB database within this region.These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.
| Occurrences | 27 | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Youngest Fossil Listed | 0.01 Ma (Pleistocene) | ||||||||||||||||||
| Oldest Fossil Listed | 157 Ma (Jurassic) | ||||||||||||||||||
| Stratigraphic Units |
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| Fossils from Region | Click here to show the list. | ||||||||||||||||||
| Fossil Localities | Click to show 9 fossil localities |
Localities in this Region
- Alaska
- Aleutians East Borough
- Dillingham Census Area
- Bristol Bay Mining District
- Lake and Peninsula Borough
Other Regions, Features and Areas that Intersect
North AmericaContinent
North America PlateTectonic Plate
- East Aleutian ArcVolcanic Arc
- Peninsular-Bristol DomainDomain
- Peninsular-Iliamna DomainDomain
- Peninsular-Talkeetna DomainDomain
- Peninsular-Tlikakila DomainDomain
- Peninsular TerraneVolcanic Arc
USA
- Alaska
- Alaska Peninsula Mining DistrictMining District
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
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References
