Global Information Lookup Global Information

Bermuda hotspot information


The Bermuda hotspot is a supposed midplate hotspot swell in the Atlantic Ocean 500–1,000 km (310–620 mi) southeast of Bermuda,[1] proposed to explain the extinct volcanoes of the Bermuda Rise as well as the Mississippi Embayment[2][3][4] and the Sabine Uplift southwest of the Mississippi Embayment.[5]

A 2002 paper proposes that the Bermuda hotspot generated the Mississippi Embayment in the Early Cretaceous Epoch, when the hotspot strengthened and uplifted the present-day Mississippi Valley. The resulting highland eroded over time, and when North American plate motion moved the valley away from the hotspot, the resulting thinned lithosphere subsided, forming a trough. The seismic zones centered on New Madrid, Missouri, and Charleston, South Carolina, and the volcanic kimberlite pipes in Arkansas are cited as evidence.[4]

Other published reports[6][7] argue that the lack of a chain of age-progressive seamounts (as in the Hawaiian-Emperor seamount chain), the absence of present-day volcanism, and the elongation of the Bermuda Rise oblique to plate motion are evidence against a hotspot origin for the Bermuda Rise. Others[6] alternatively attribute the Bermuda Rise to a reorganization of plate tectonics associated with the closing of the Tethys Sea, though noting that shallow processes may not explain the source of the magmatism. A more recent paper[7] finds a thinning in the mantle transition zone under Bermuda, apparently consistent with mantle upwelling and a hot lower mantle below Bermuda. A still more recent paper,[8] based on geochemical analysis of a drill core, suggests that Bermuda volcanism sampled a transient mantle reservoir in the mantle transition zone that was formed by chemical recycling related to subduction during the formation of Pangaea.

  1. ^ Vacher, H.L.; Rowe, Mark (1997). Vacher, H.L.; Quinn, T. (eds.). Geology and Hydrogeology of Bermuda, in Geology and Hydrogeology of Carbonate Islands, Developments in Sedimentology 54. Amsterdam: elsevier Science B.V. pp. 35–90. ISBN 9780444516442.
  2. ^ Cox, Randel T.; Roy B. Van Arsdale (January 2007). "The Mississippi's Curious Origins". Scientific American. 296 (1): 76–82B. Bibcode:2007SciAm.296a..76V. doi:10.1038/scientificamerican0107-76. PMID 17186836.
  3. ^ Cox, Randel T.; Roy B. Van Arsdale (1997). "Hotspot origin of the Mississippi embayment and its possible impact on contemporary seismicity". Engineering Geology. 46 (3–4): 201–216. Bibcode:1997EngGe..46..201C. doi:10.1016/S0013-7952(97)00003-3.
  4. ^ a b Cox, Randel T.; Roy B. Van Arsdale (2002). "The Mississippi Embayment North America: A First Order Continental Structure Generated by the Cretaceaous Superplume Mantle Event". Journal of Geodynamics. 34 (2): 163–176. Bibcode:2002JGeo...34..163C. doi:10.1016/S0264-3707(02)00019-4.
  5. ^ Nunn, Jeffrey A. (1990). "Relaxation of Continental Lithosphere: an Explanation for Late Cretaceous Reactivation of the Sabine Uplift of Louisiana-Texas". Tectonics. 9 (2): 341–359. Bibcode:1990Tecto...9..341N. doi:10.1029/TC009i002p00341.
  6. ^ a b Vogt, Peter R.; Woo-Yeol Jung (2007). Origin of the Bermuda volcanoes and the Bermuda Rise: History, observations, models, and puzzles (PDF). Vol. 430. pp. 553–591. CiteSeerX 10.1.1.484.2851. doi:10.1130/2007.2430(27). ISBN 978-0-8137-2430-0. Retrieved 12 August 2008. {{cite book}}: |journal= ignored (help)
  7. ^ a b Benoit, Margaret H.; Maureen D. Long; Scott D. King (2013). "Anomalously thin transition zone and apparently isotropic upper mantle beneath Bermuda: Evidence for upwelling". Geochemistry, Geophysics, Geosystems. 14 (10): 4282. Bibcode:2013GGG....14.4282B. doi:10.1002/ggge.20277.
  8. ^ Mazza, Sarah E.; Esteban Gazel; Michael Bizimis; Robert Moucha; Paul Béguelin; Elizabeth A. Johnson; Ryan McAleer; Alexander V. Sobolev (2019). "Sampling the volatile-rich transition zone beneath Bermuda". Nature. 569 (7756): 398–403. Bibcode:2019Natur.569..398M. doi:10.1038/s41586-019-1183-6. PMID 31092940. S2CID 155103393.

and 26 Related for: Bermuda hotspot information

Request time (Page generated in 0.8234 seconds.)

Bermuda hotspot

Last Update:

The Bermuda hotspot is a supposed midplate hotspot swell in the Atlantic Ocean 500–1,000 km (310–620 mi) southeast of Bermuda, proposed to explain the...

Word Count : 623

Bermuda Pedestal

Last Update:

Geography of Bermuda Bermuda hotspot List of shield volcanoes Vogt, P. R.; Jung, W. Y. (2007). "Origin of the Bermuda volcanoes and Bermuda Rise: History...

Word Count : 488

Jackson Volcano

Last Update:

Mississippi were a result of the North America Plate's passage over the Bermuda hotspot 66 million years ago. Alternatively, the volcanism may have been part...

Word Count : 773

Mississippi embayment

Last Update:

ago, North America passed over a volcanic "hotspot" in the Earth's mantle (specifically, the Bermuda hotspot) that was undergoing a period of intense activity...

Word Count : 739

New England Seamounts

Last Update:

intervening roughly between Bermuda and Nashville Seamount). The New England hotspot, also referred to as the Great Meteor hotspot, formed the White Mountains...

Word Count : 1243

Mississippi River

Last Update:

ago, North America passed over a volcanic "hotspot" in the Earth's mantle (specifically, the Bermuda hotspot) that was undergoing a period of intense activity...

Word Count : 14351

Great Sound

Last Update:

Other geologists dispute the origin of the Bermuda Pedestal as a volcanic hotspot. The Great Sound dominates the southwest of the island chain and forms...

Word Count : 293

Geology of Bermuda

Last Update:

The geology of Bermuda represents an isolated limestone island in the Atlantic at the edge of the shallow Bermuda Platform. This platform is part of the...

Word Count : 231

Midnight Volcano

Last Update:

Cretaceous sand layer to the north. Jackson Volcano Mississippi Embayment Bermuda Hotspot List of Volcanoes in the United States "Ask Rufus: Tombigbee sharks...

Word Count : 434

Island

Last Update:

of Tuvalu. Tristan da Cunha is an example of a hotspot volcano in the Atlantic Ocean. Another hotspot in the Atlantic is the island of Surtsey, which...

Word Count : 3315

British Overseas Territories

Last Update:

while the two largest territories by population, the Cayman Islands and Bermuda, account for about half of the total BOT population. The Cayman Islands...

Word Count : 8791

2023 Atlantic hurricane season

Last Update:

high-end Category 4 hurricane and bringing tropical-storm-force winds to Bermuda. After briefly attaining Category 4 strength on August 30, Hurricane Idalia...

Word Count : 14912

Bacardi

Last Update:

Bacardi International Limited. Bacardi Limited is headquartered in Hamilton, Bermuda, and has a board of directors led by the original founder's great-great...

Word Count : 3635

Digital nomad

Last Update:

co-working spaces, or recreational vehicles, using Wi-Fi, smartphones or mobile hotspots to access the Internet. The majority of digital nomads describe themselves...

Word Count : 4125

Antipodes

Last Update:

Perth metropolitan area near Baldivis and Rockingham that is antipodal to Bermuda, the antipodes of Australia are in the North Atlantic Ocean, while parts...

Word Count : 6161

Turks and Caicos Islands

Last Update:

gaining control. For many years they were governed indirectly through Bermuda, the Bahamas, and Jamaica. When the Bahamas gained independence in 1973...

Word Count : 9142

List of isolated islands and archipelagos

Last Update:

as Bouvet Island while others appear from hotspots such as the Azores which was created by the Azores hotspot. This list includes islands that are more...

Word Count : 1259

Bear Seamount

Last Update:

Massachusetts to north-east of Bermuda. These seamounts resulted from the movement of a mantle plume hotspot. This hotspot is now under the Great Meteor...

Word Count : 638

Recurrent evolution

Last Update:

evolution. The existence of mutational "hotspots" within the genome often gives rise to recurrent evolution. Hotspots can arise at certain nucleotide sequences...

Word Count : 1874

Internet

Last Update:

provides wireless access to the Internet via local computer networks. Hotspots providing such access include Wi-Fi cafés, where users need to bring their...

Word Count : 16315

Zak McKracken and the Alien Mindbenders

Last Update:

visited in the game are common hotspots for these ideas, such as the pyramids of Egypt and Mexico, Lima, Stonehenge, the Bermuda Triangle, and the Face on...

Word Count : 1590

Seamount

Last Update:

be associated with other evidence of hotspot activity, such as on the Walvis Ridge, Vitória-Trindade Ridge, Bermuda Islands and Cape Verde Islands. The...

Word Count : 5211

Atlantis

Last Update:

buoyant upwelling in the deeper mantle, which some associate with an Azores hotspot. Most of the volcanic activity has occurred primarily along the Terceira...

Word Count : 11729

Intraplate volcanism

Last Update:

reaching shallow depths, a plume is often invoked as the cause of volcanic hotspots, such as Hawaii or Iceland, and large igneous provinces such as the Deccan...

Word Count : 11934

UFO Hunters

Last Update:

History, including "Russian Roswell", "Deep Sea UFOs", and "The Pacific's Bermuda Triangle". William J. Birnes was the star and co-creator of the UFO Hunters...

Word Count : 672

Google Play

Last Update:

2011). "Carriers crack down on Android tethering apps, rain on our mobile hotspot parade". Engadget. AOL (a division of Verizon Communications). Archived...

Word Count : 12290

PDF Search Engine © AllGlobal.net