Relief iyo macdanta ee North America

Continent North America daboolaa aag aad u ballaaran. In size waa kii saddexaad ee adduunka. Maaddaama ay ku muuqaalka guud ee dhulka iyo khayraadka dabiiciga ah ee North America waxaa lagu gartaa kala duwanaanshaha weyn. Tani waxaa ka wada xaajoon doona more ...

meel juquraafi

qaarada wuxuu ku yaalaa barka ah waqooyiga iyo galbeedka ee dhulka. Waxaa la maydhay by the Pacific iyo Atlantic iyo Arctic Oceans ah, soo bandhigay noocyo kala duwan oo talgaley iyo badaha. From South America, qaaradda u kala sooco ku dhow halkay ku of Panama, in galbeed ee Eurasia, waxaa loo qaybiyey Strait Bering ah.

Qaybta qaaradda of North America waa meel ka mid ah 20,36 million mitir oo laba jibbaaran. km. Waxaa ka mid ah jasiiradaha qayb waynaha reer Greenland, Caribbean, Arctic ah Jasiiradaha Canadian, iyo kuwa kale. From dhererka waqooyi-koonfur ee qaaradda ka mid ah 7326 kilomitir, xagga galbeed iyo bari - 4700 kilomitir.

territory dhulweynaha waa ku dhowaad dhammaan juqraafi. Maraykanka iyo Kanada, oo ay la socdaan Bahamas, Bermuda iyo Greenland noqonaya gobolka North American. qaybta koonfureed, oo ku yaalla kulaale, waa qayb ka mid ah gobolka Central American ah.

gargaarka

Relief iyo macdanta ee North America ka Garaaci kala duwan. dusha sare ee qaaradda ka wakiil yahay in farqiga - waxaa jira buuraha iyo canyons, bannaanka iyo buuro. Inta badan dhulka ay degan by bannaanka labada dhinac ee xadka ay buuraha. height ee bannaanka kala duwanaan kartaa inta u dhaxaysa dhowr boqol oo mitir, taas oo dhul arrin galgaloolan ka dhigaa.

In qaybta waqooyi ee Upland Laurentian la wadaagtaa on silsilad koonfureed ee harooyinka waaweyn ee. Saamaynta sitoos haddii smoothed dhagaxyada qaabeeya iyo kuraha, formation of hogag. Dhanka koonfureed waxay buur ah waa Valley Central, Oo waana u qumman ka danbeeya - dooxada Mississippi.

In qaybta galbeed ee Babacyada Great yihiin - foothills of Cordillera ah. ilaa ay ka gaaraan ilaa 1,500 mitir ee height. Cordillera waa zone ugu laab, sarajooggiisuna wuxuu ugu badnaan - waa sare ee Mount McKinley ee 6193 mitir. Waxay ka samaysan qaybta bari ee Buuraha Rocky (4,200 m) iyo Buuraha Cascade ah.

In bari diyaarin Appalaachian wakiil kuraha dhaadheer dhexdhexaad ah la arrays oo kala duwan ilaa 2000 mitir. In koonfureed ee qaarada yihiin Mexico iyo inta banka Caraabaah Atlantic xeebta, aan ka badnayn laba boqol oo mitir. Xeebaha, waxay soo bandhigi ulihiisa gudban, iyo Millo, lagoons, tufo.

Qaab dhismeedka geotectonic

The qaarada North American waa madal la aasaasin, kuwaas oo intooda badan qaadataa Shield Canadian ah, la aasaasay horraantii Precambrian ah. geesaha ay saaray, waxaa jira kayd ah hogaanka, nickel, dahab, senti Cobalt iyo macdano kale ee North America.

Laga soo bilaabo bari u xirmi Canadian Shield Appalaachian. Meelahaas waxaa buuraha duubnaadaan-block billowda habka halligaadda. meelaha isku darsamay dooxada u soo jeestay, iyo dhagaxii weynaa more adkaysi u tagay qaab sarreeya.

In qaybta galbeed ee qaarada waa celcelis ahaan gobolka Cordilleran of laabanto, aasaaseen isku dhaceen ee taarikada tectonic. Marxaladani waxay maanta. Cordilleras formation ayaa sidoo kale saamayn ku sitoos. Sidaa darteed, ee gobolka this ku yaalaan macdanta ku aasan iyo igneous labadaba North America.

Great Babacyada waxa uu ku yaalaa on soohdinta reer madal iyo Cordillera ah. Waxay waxaa la aasaasay by korsiiya badda iyo qaaradda. Waxay leeyihiin asal ahaan isku mid ah iyo Valley Dhexe. In dhagaxyada wejiga karst koonfur-bari ay, abuurista daridska ah oo qoto dheer - bareejeeyo Cave. dhagaxyada aasan sameeyay iyo bannaankaba Mexico.

North America: Macdanta (kooban)

Qaab-dhismeedka dhulka waa muhiimada aasaasiga ah ee formation of macdanta qaarkood. Thanks to dhismeedkooda gaar ah, macdanta ee North America ku dhow yihiin oo dhan qaaradda.

In goobta gaashaan Canadian waa kayd muhiim ah oo senti uranium iyo bir, molybdenum, nickel, naxaas. In the dhulka hoose ee xeebta, iyo sidoo kale in ay Cordilleras iyo Alaska waa kaydka shidaalka lafo. Halkan miino macdanta sida saliidda North American iyo gaaska dabiiciga ah.

Gobollada dhexe iyo Niyadjabka waa kayd dhuxusha Appalaachian. In Cordilleras yihiin macdano kala duwan ku aasan iyo magmatic, sida dahabka, senti biraha non-ferrous, mercury. kayd badan oo phosphate ku yaalaan on gacan dhul ah oo lagu magacaabo Florida.

Macdanta North America: miiska

Wixii aragti ah si fiican waxaannu go'aansannay in aqbaartan isku dhan iyo soo bandhigay miis, kaas oo hoos lagu soo bandhigay.

gunaanad

qaarada of North America waxa uu ku yaalaa ee barka ah waqooyiga iyo galbeedka ee caalamka. Halka ay juqraafi ahaan, xaaladaha dabiiciga ah iyo qaab-dhismeedka dhulka saamayn formation of macdanta.

The macdanta waaweyn ee North America - waa senti bir aan ferrous, ore nematallicheskie iyo shidaalka lafo. iyaga ka mid ah, gaaska dabiiciga ah, saliid, dhuxusha, phosphates, uranium, lead, zinc, nickel, ore lacag ah, dahabka, platina iyo kuwa kale.

Sababo la xiriira tirada badan iyo kala duwanaanta khayraadka, labada dal weyn ku waynaha ku siin kara naftooda iyo ma ku tiirsan tahay dalal kale oo noqon.