Victoria Island structure

Victoria Island structure

Impact crater/structure
Confidence| probable[1]
Diameter| 5.5 kilometers (3.4 mi)
Exposed| No
Drilled| No
Location
Coordinates| 37°53′24″N 121°32′06″W﻿ / ﻿37.89°N 121.535°W﻿ / 37.89; -121.535
Country| United States
State| California
District| San Joaquin County

The Victoria Island structure is a 5.5 km (3 mi) bowl-shaped structure buried in the shale sediments of the Sacramento-San Joaquin River Delta, 12 miles (19 km) west of Stockton, California. The circular structure is part of a former sea bed, and lies 1,490–1,600 meters (4,890–5,250 ft) below sea level.[2]

Discovered during oil exploration and reported at the Lunar and Planetary Science Conference in Houston, Texas, in March 2007, it is thought to be a buried impact crater formed between 37 and 49 million years ago.[3][4]

Victoria Island, which the structure is named for, is in the San Joaquin River Delta at approximately 37°53′24″N 121°32′06″W﻿ / ﻿37.890°N 121.535°W﻿ / 37.890; -121.535.[5] The current publications do not list a more precise location for the impact structure than the island.

## See also

[edit]

* List of possible impact structures on Earth

## References

[edit]

1. ^ Rajmon, D. "Impact Database 2009.2". Impact Field Studies Group. entry for "Victoria Island". Retrieved 2010-03-16.
2. ^ Paul Rincon (2007). 'Crater' spied under California, BBC News
3. ^ Spevack, S. C., Morrow, J. R., Spevack, B. Z. (2007). "3-D seismic and well log analyses of the Victoria Island Structure, a Potential Buried Impact Crater, San Joaquin County, California" (.PDF). Lunar and Planetary Science Conference XXXVIII. Retrieved 2009-09-17.`{{cite web}}`: CS1 maint: multiple names: authors list (link)
4. ^ Roach, John (2007-03-27). "Giant Meteorite Hit Ancient California, Crater Study Suggests". National Geographic News. National Geographic Society. Archived from the original on April 4, 2007. Retrieved 2009-09-01.
5. ^ "Victoria Island". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.

## External links

[edit]

* BBC News
* Aerial Exploration of the Victoria Island Structure

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Impact cratering on Earth

* Impact crater
* Impact event

Lists|

* Worldwide
* Africa
* Antarctica
* Asia and Russia
* Australia
* Europe
* North America
* South America
* By country
* Possible

Confirmed

≥20 km diameter|

* Acraman
* Amelia Creek
* Araguainha
* Beaverhead
* Boltysh
* Carswell
* Charlevoix
* Chesapeake Bay
* Chicxulub
* Clearwater East and West
* Gosses Bluff
* Haughton
* Kamensk
* Kara
* Karakul
* Keurusselkä
* Lappajärvi
* Logancha
* Manicouagan
* Manson
* Mistastin
* Mjølnir
* Montagnais
* Morokweng
* Nördlinger Ries
* Obolon'
* Popigai
* Presqu'île
* Puchezh-Katunki
* Rochechouart
* Saint Martin
* Shoemaker
* Siljan Ring
* Slate Islands
* Steen River
* Strangways
* Sudbury
* Tookoonooka
* Tunnunik
* Vredefort
* Woodleigh
* Yarrabubba

Topics|

* Alvarez hypothesis
* Australite
* Breccia
* Coesite
* Complex crater
* Cretaceous–Paleogene boundary
* Cryptoexplosion
* Ejecta blanket
* Impact crater
* Impact structure
* Impactite
* Late Heavy Bombardment
* Lechatelierite
* Meteorite
* Moldavite
* Ordovician meteor event
* Philippinite
* Planar deformation features
* Shatter cone
* Shock metamorphism
* Shocked quartz
* Stishovite
* Suevite
* Tektite

Research|

* Ralph Belknap Baldwin
* Daniel Barringer
* Barringer Medal
* Edward C. T. Chao
* Robert S. Dietz
* William Kenneth Hartmann
* H. Jay Melosh
* Graham Ryder
* Peter H. Schultz
* Eugene Merle Shoemaker
* Earth Impact Database
* Impact Field Studies Group
* Lunar and Planetary Institute
* Traces of Catastrophe

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