The New England hotspot, also referred to as the Great Meteor hotspot and sometimes the Monteregian hotspot, is a volcanic hotspot in the North Atlantic Ocean. It created the Monteregian Hills intrusions in Montreal and Montérégie, the White Mountains intrusions in New Hampshire, the New England and Corner Rise seamounts off the coast of North America, and the Seewarte Seamounts east of the Mid-Atlantic Ridge on the African Plate, the latter of which include its most recent eruptive center, the Great Meteor Seamount.[1][2][3] The New England, Great Meteor, or Monteregian hotspot track has been used to estimate the movement of the North American Plate away from the African Plate from the early Cretaceous period to the present using the fixed hotspot reference frame.[4]
The geologic history of the New England hotspot is the subject of much debate among geoscientists. The conventional opinion is that volcanic activity associated with the hotspot results from movement of the North American Plate over a fixed mantle plume. During the first major episodes of volcanic activity, the plume created the igneous intrusions of the Monteregian Hills in southern Quebec and the younger set of intrusions of the White Mountains in New Hampshire around 124-100 Ma. As the plate moved further west, the plume moved offshore, forming the New England Seamounts between 103 and 83 Ma. After the formation of the Nashville Seamount around 83 Ma, there was a pause in volcanic activity and the volcanic center shifted north, creating the Corner Rise Seamounts around 80-76 Ma. The Mid-Atlantic Ridge passed over the plume around 76 Ma and renewed volcanic activity produced the Seewarte Seamounts on the African Plate between 26 and 10 Ma.[1][2][3][4]
Evidence for a plume origin includes the above age progression, seismic anomalies in the lower mantle under the Great Meteor Seamount (though these do not extend into the upper mantle as expected for a plume),[5][6] and helium isotope ratios in groundwater in the Monteregian Hills which indicate a deep mantle source.[7] The lack of an obvious hotspot track west of Montreal has previously been ascribed to failure of the plume to penetrate the Canadian Shield, a lack of recognizable intrusions due to erosion, or strengthening of the plume when it approached the Monteregian Hills,[1][8] but more recent research has found kimberlite fields in Ontario and New York dated between 180 and 134 Ma and at Rankin Inlet to the northwest of Hudson Bay dated between 214-192 Ma which may represent an older, continental extension of the hotspot track.[9]
Some evidence, such the lack of an initial flood basalt and age progression along the New England-Quebec volcanic province, is not what is expected for a plume origin, and the case has been made that a shallow, tectonic mechanism is more plausible.[10][11][12][13] In this view, the two spikes in activity that formed the New England-Quebec volcanic province and New England Seamounts are due to passive, shallow melting associated with lithospheric extension resulting from tectonic changes in the Atlantic Ocean which reactivated pre-existing zones of structural weakness related to the earlier opening of the Iapetus Ocean.[12][13] The more recent seamounts are thought to mark discrete episodes of volcanic activity along different lines or segments of the same structural trend rather than movement of the plate over a fixed mantle plume.[10][11] The timing of volcanic activity which coincides with major reorganisations of plate boundaries,[12][13] as well as geochemical analysis of the Monteregian plutons which indicates a lithospheric mantle source,[14] support this interpretation.
هذه المقالة تحتاج للمزيد من الوصلات للمقالات الأخرى للمساعدة في ترابط مقالات الموسوعة. فضلًا ساعد في تحسين هذه المقالة بإضافة وصلات إلى المقالات المتعلقة بها الموجودة في النص الحالي. (مايو 2023) ميّز عن الخميسية والخميسية (الرقة). ناحية الخميسية تقسيم إداري البلد العراق…
В Википедии есть статьи о других людях с именем Фридерика. Фридерика Луиза Гессен-Дармштадтскаянем. Friederike Luise von Hessen-Darmstadt 5-я королева-консорт[en] Пруссии26-я курфюрстина Бранденбурга 17 августа 1786 — 16 ноября 1797 Предшественник Елизавета Кристина Брауншвейгская Преемник …
Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Februari 2023. Tsubasa TakeuchiInformasi pribadiNama lengkap Tsubasa TakeuchiTanggal lahir 20 Mei 1991 (umur 32)Tempat lahir Prefektur Hiroshima, JepangPosisi bermain PenyerangKarier senior*Tahun Tim Tampil (Gol)2010-2013 Fagiano Okayama * Penampilan dan gol di kl…
Highway 296Route informationMaintained by ArDOTLength25.68 mi[2] (41.33 km)ExistedApril 24, 1963[1]–presentMajor junctionsWest end US 59 / US 71 in TexarkanaMajor intersections US 67 near TexarkanaEast end US 82 LocationCountryUnited StatesStateArkansasCountiesMiller Highway system Arkansas Highway System Interstate US State Business Spurs Suffixed Scenic Heritage ← AR 295→ AR 297 Highway 296 (AR 296, Ark. 296, and…
Fort Collins Municipal RailwayOverviewLocaleFort Collins, ColoradoTransit typeHeritage streetcar, seasonalNumber of lines1OperationBegan operation1984Operator(s)Fort Collins Municipal Railway Society (FCMRS)TechnicalSystem length1.5 miles (2.4 km)Track gauge4 ft 8+1⁄2 in (1,435 mm)Old gauge4 ft 8+1⁄2 in (1,435 mm)Electrification600 V DC, overhead wires Fort Collins Birney car 21 on the 1984-opened heritage streetcar line Evolution of the s…
هذه المقالة عن القُدُّوس، وهو اسم من أسماء الله الحسنى. لمعانٍ أخرى، طالع قدوس (توضيح). جزء من سلسلة مقالات حولالله في الإسلام مصطلحاتالتسبيح: سبحان الله التكبير: الله أكبر الحمد: الحمد لله التشهّد: لا إله إلّا الله تعابير مرتبطة جلَّ جلاله سبحانه وتعالى عزَّ وجلّ أخرى
National Equities Exchange and QuotationsHeadquarters of the NEEQTypeOver-the-counter exchangeLocationBeijing, ChinaFounded2012CurrencyCN¥No. of listings10,209 companiesIndicesNEEQ Composite IndexWebsitehttp://www.neeq.com.cn/ National Equities Exchange And QuotationsSimplified Chinese全国中小企业股份转让系统Traditional Chinese全國中小企業股份轉讓系統TranscriptionsStandard MandarinHanyu PinyinQuánguó zhōngxiǎo qǐyè gǔfèn zhuǎnràng xìtǒngAlterna…
Allocation of the military budget of Bangladesh The Military budget of Bangladesh is the proportion of the overall national budget of Bangladesh that is allocated for the purpose of funding the Bangladesh Armed Forces. This military budget finances employee salaries and training costs, the maintenance of equipment and facilities, support of new or ongoing operations, and development and procurement of new weapons, equipment, and vehicles. The budget funds three branches of the Bangladesh Armed F…
Overview of the transport in Tajikistan 2001 map of Tajikistan including road and rail network Most of rugged Tajikistan's transportation system was built during the Soviet era, and since that time the system has deteriorated badly because of insufficient investment and maintenance. In 2013, Tajikistan, like many of the other Central Asian countries, was experiencing major development in its transportation sector. Beginning in 2005, a series of major transportation projects begun. The first such…
هذه المقالة يتيمة إذ تصل إليها مقالات أخرى قليلة جدًا. فضلًا، ساعد بإضافة وصلة إليها في مقالات متعلقة بها. (أبريل 2019) والتر برنس معلومات شخصية الميلاد 9 مايو 1861[1] الوفاة 2 مارس 1938 (76 سنة) مواطنة الولايات المتحدة الحياة العملية المهنة لاعب كرة قاعدة الرياضة كرة …
Ein Angehöriger der römischen Nobilität mit Büsten seiner Ahnen. Als Nobilität (von lateinisch nobilitas ‚Berühmtheit‘) wird in der Forschung die Führungsschicht der mittleren und späten römischen Republik sowie der Prinzipatszeit bezeichnet, die sich nach dem Abschluss der „Ständekämpfe“ herausbildete. Als nobilis (Plural: nobiles) bezeichneten die Römer selbst einen Angehörigen jener Aristokratie, die durch Bekleidung wichtiger öffentlicher Ämter Bekanntheit, eben nobili…
Modell des Frachtschiffes La Gauloise in der Ausstellung des Museums Das Musée des Traditions et des Barques du Léman ist ein Verkehrsmuseum in der Schweizer Gemeinde Saint-Gingolph, das sich vorwiegend der historischen Handelsschifffahrt auf dem Genfersee widmet. In der Museumsausstellung ist die fünfhundertjährige Geschichte des Gütertransports auf dem See dargestellt. Inhaltsverzeichnis 1 Beschreibung 2 Siehe auch 3 Literatur 4 Weblinks 5 Einzelnachweise Beschreibung Das vom Verein Assoc…
Este artículo o sección necesita referencias que aparezcan en una publicación acreditada.Este aviso fue puesto el 10 de julio de 2013. Unidad Educativa Fiscomisional San José Colegio San José Ciencia y virtudLocalizaciónPaís EcuadorLocalidad Tena, Ecuador EcuadorDirección Av. Muyuna s/n, Barrio San AntonioCoordenadas 0°59′11″S 77°49′50″O / -0.98638889, -77.83055556InformaciónAcrónimo U.S.J.Alias Papá San José, SanjoAfiliación religiosa Josef…
JAMC redirects here. For the band, see The Jesus and Mary Chain. Academic journalJournal of Applied Meteorology and ClimatologyJanuary 2006 coverDisciplineMeteorology and ClimatologyLanguageEnglishEdited byDavid A. R. KristovichPublication detailsFormer name(s)Journal of Applied MeteorologyHistory1962 to presentPublisherAmerican Meteorological Society (U.S.A)FrequencyMonthlyOpen accessafter 3 yearsImpact factor2.923 (2020)Standard abbreviationsISO 4 (alt) · Bluebook (alt1…
سفارة إيطاليا في بلغاريا إيطاليا بلغاريا الإحداثيات 42°41′42″N 23°19′52″E / 42.6951°N 23.3312°E / 42.6951; 23.3312 البلد بلغاريا المكان Stolichna Municipality [الإنجليزية] الموقع الالكتروني الموقع الرسمي تعديل مصدري - تعديل سفارة إيطاليا في بلغاريا هي أرفع تمثيل دبلوماسي…
Part of a series on theCulture of Qatar History People Languages Cuisine Festivals Public holidays Religion Art Collecting practices of the Al-Thani Family Public art in Qatar Literature Qatari folklore Music and Performing arts Media Radio Television Cinema Sport Monuments World Heritage Sites Symbols Flag Coat of arms National anthem vte Qatari literature traces its origins back to the 19th century. Originally, written poetry was the most common form of expression, but poetry later fell out of…
Newel Huy hiệuVị trí của Newel NewelQuốc giaĐứcBangRheinland-PfalzHuyệnTrier-SaarburgLiên xãTrier-LandPhân chia hành chính4Chính quyền • Thị trưởngMatthias Mohn (CDU)Diện tích • Tổng cộng16,65 km2 (643 mi2)Độ cao365 m (1,198 ft)Dân số (2020-12-31)[1] • Tổng cộng2.752 • Mật độ1,7/km2 (4,3/mi2)Múi giờCET (UTC+01:00) • Mùa hè…
Escudo del Reino de las Dos Sicilias Escudo real de las Dos Sicilias (1816-1861) BlasónInformaciónFecha de adopción 21 de diciembre de 1816Usos Escudo de la Casa de Borbón-Dos Sicilias y del Reino de las Dos Sicilias[editar datos en Wikidata] Desarrollo heráldico del escudo y del blasón que utiliza como escudo personal la Casa de Borbón-Dos Sicilias y para el Reino de las Dos Sicilias. Aprobado con un decreto del 21 de diciembre de 1816. Origen El origen del escudo está cuando …
Rooney MaraMara di penayangan perdana The Girl with the Dragon Tattoo, Paris, Januari 2012LahirPatricia Rooney Mara17 April 1985 (umur 38)[1]Bedford, New York, A.S.Nama lainPatricia MaraTricia MaraAlmamaterUniversitas New YorkPekerjaanAktrisTahun aktif2005–sekarang Patricia Rooney Mara /ˈmɛərə/ MAIR-ə[2] (lahir 17 April 1985)[1] adalah aktris Amerika Serikat. Ia terjun ke dunia perfilman pada tahun 2005, lalu membintang sejumlah film seperti Tanner H…
American light transport truck model Motor vehicle Grumman Long Life VehicleA 1989 Grumman LLV of the United States Postal Service, seen in Carson City, Nevada, in December 2005.OverviewManufacturerGrummanAlso calledUSPS Mail truckProduction1987–1994[1]AssemblyMontgomery, PennsylvaniaBody and chassisClassMail truckRelatedKurbWatt, KubvanPowertrainEngine2.2 L (134 cu in) LN2 I42.5 L (151 cu in) LN8/L38 I4Transmission3-speed GM TH180 automatic[2]…
Lokasi Pengunjung: 18.117.138.193