Mpumulo ndi mchere mu North America

Africa North America chimakwirira lalikulu. Kukula ndi wachitatu mu dziko. Chifukwa cha zimachititsa chilumbachi ndi zachilengedwe a North America yodziwika ndi kuchuluka kwambiri. Tikambirana zambiri ...

malo Hrs

kontinenti ili mu hemispheres kumpoto ndi kumadzulo kwa dziko lapansi. Iwo osambitsidwa ndi Pacific ndi Atlantic ndi Arctic nyanja, anapereka zosiyanasiyana Magombe ndi nyanja. Kumwera kwa America, kontinenti alekanitsa kamtunda kopita ku chilumba cha Panama, kumadzulo kwa Europe ndi ku Asia, izo lagawidwa ndi Bering Strait.

Mbali chokhala la North America ndi malo mamita lalikulu miliyoni 20,36. Km. Mwa zilumba za gawo kumtunda kwa Greenland, Caribbean, ndi Canada Arctic Archipelago, ndi ena. Kuyambira kutalika kumpoto ndi kum'mwera kwa Africa wa makilomita 7326, kuchokera kumadzulo kupita kum'mawa - makilomita 4700.

m'gawo kumtunda ndi pafupi mabacteria onse linalake. The United States ndi Canada, pamodzi ndi Bahamas, Bermuda ndi Greenland m'gulu la North America dera. Kum'mwera, limene lili mu kotentha, ndi mbali ya dera la ku Central America.

mpumulo

Mpumulo ndi mchere mu North America amenewo akukantha zosiyanasiyana. Pamwamba pa Africa akuyimiridwa mu osiyanitsa - muli mapiri ndi maphompho, zigwa ndi zitunda. Ambiri a m'dera limene mukukhala zigwa mbali zonse za malire awo mapiri. Kutalika kwa zigwa siyana pakati pa mamita mazana angapo, zomwe zimachititsa kuti wavy ndithu mtunda.

Kumpoto kwa Laurentian zomwe zili ndi m'mphepete pa unyolo kum'mwera kwa nyanja yaikulu. Zotsatira glacier anapereka ankawachotsera zooneka miyala ndi mapiri, mapangidwe m'maenje. Kum'mwera ndi mapiri chapakati Valley, ndi kumbuyo komwe iwo - Mississippi chigwa.

Mu dera la kumadzulo kwa Wamkulu m'Chigwa ali - m'tsinde mwa Cordillera. Iwonso amayesetsa kuti mamita 1,500 mu msinkhu. Cordillera ndi zone khola kwambiri, kutalika pazipita - ndi pamwamba pa phiri la McKinley mu mamita 6193. Iwo amapanga kum'mawa kwa miyala Mountains (4,200 m) ndi kugwa Mountains.

Kummawa anakonza Appalachian umaimiridwa ndi mapiri sing'anga yapamwamba ndi magulu osiyana mpaka mamita 2000. Kumwera kwa Africa ndi Mexico ndi Atlantic m'mphepete mwa nyanja mbalambanda, osati choposa mamita mazana awiri. Off gombe, anapereka mipiringidzo masitepe, mathamandawa, amalavulira.

kapangidwe geotectonic

The North America ndi maziko nsanja, ambiri mwa akutenga Canada Chikopa, anapangidwa kumayambiriro Precambrian. m'mbali ake zasiyidwa, pali miyala ya kutsogolera, faifi tambala, golide, cobalt ores ndi mchere mu North America.

Kum'mawa kwa Canada Chikopa Appalachian alipo. Mu mapiri apangidwe-chipika anayambitsa njira chiwonongeko. m'madera amaona inasanduka chigwa, ndi thanthwe zambiri zosagwira anachoka mu mawonekedwe a okwera.

Mu dera la kumadzulo kwa Africa ndi Cordilleran dera avareji yopindika, popangidwa ndi kugunda mbale tectonic. ndondomeko imeneyi lero. Mapangidwe Cordilleras nawonso anakopeka glacier. Choncho, m'dera lino zili mchere onse nyanja ndi igneous ku North America.

Great m'Chigwa lili kumalire ndi nsanja ndi Cordillera. Iwo anapanga ndi m'dambo m'madzi komanso chokhala. Inayamba ofanana ndi ku Central Valley. Kum'mwera kum'mawa awo nkhope karst miyala, kupanga ndikuyenda a zozama - Mammoth Cave. Nyanja miyala zinapangidwa lowland Mexico.

North America: Mchere (mwachidule)

Kapangidwe Geological ndi zofunika kwambiri kwa mapangidwe zinthu zina mchere. Zikomo dongosolo yache, mchere mu North America pafupifupi mu Africa wa.

Mu Canada chishango m'dera ndi madipoziti chapadera cha ureniamu ores ndi chitsulo, molybdenum, faifi tambala, mkuwa. Mu otsika dhuzi na gombe, komanso mu Cordilleras ndi Alaska ndi nkhokwe ya mafuta okumba pansi. Apa ncho mchere monga North America mafuta ndiponso gasi.

Mu zigawo chapakati ndi matendawa, ndi Appalachian madipoziti malasha. Mu Cordilleras ali zosiyanasiyana nyanja ndi magmatic mchere, monga golide, ores zitsulo sanali akakhala, Mercury. Large miyala ya mankwala ili pa chilumba otchedwa Florida.

Mchere North America: tebulo

Pakuti maganizo abwino tinaganiza kuika pamodzi mfundo zonse ndi kuperekedwa mu tebulo, amene anapereka m'munsimu.

Pomaliza

Ndi ku North America lili hemispheres kumpoto ndi kumadzulo kwa dzikoli. malo Hrs zinthu zachilengedwe ndi dongosolo Geological mukopedwe mapangidwe chuma mchere.

Mchere zikuluzikulu North America - ndi si akakhala zitsulo ores, nematallicheskie miyala ndi mafuta, malasha. Pakati pawo, gasi, mafuta, malasha, phosphates, ureniamu, kutsogolera nthaka, faifi tambala, miyala siliva, golide, pulatinamu ndi ena.

Chifukwa chiwerengero chachikulu ndi kuchuluka kwa chuma, mayiko awiri aakulu kumtunda angapereke okha osati kudalira m'mayiko ena.