Relief uye zvicherwa muNorth America

Continent North America rinofukidza nzvimbo huru. Kukura ndicho rechitatu munyika. Nokuda yacho kwakaita nzvimbo yacho uye zviwanikwa zviri North America vanoonekwa ne siyana. Izvi ichakurukurwa more ...

nenzvimbo nzvimbo

The kondinendi iri kuchamhembe uye kumadokero hemispheres enyika. Zvinonzi kushambidzwa kuburikidza Pacific uye Atlantic uye Arctic nyanza, kwakamutsa siyana bays nemakungwa. From South America, mukondinendi anotsaura Isthmus of Panama, iri kumadokero Eurasia, rakakamurwa ne Bering Strait.

The Continental Chikamu North America ndiyo nzvimbo mamiriyoni 20,36 mativi mamita. ? km. Pakati zvitsuwa huru chikamu Zimbabwe, muCaribbean, yeCanada Arctic Archipelago, uye vamwe. Kubva kuchamhembe nokumaodzanyemba Kureba kondinendi yose 7326 makiromita, kubva kumavirira kusvikira kumabvazuva - 4700 makiromita.

yakaoma ndima iri dzinenge dzose nzvimbo dzinodengenyeka. The United States neCanada, pamwe Bahamas, Bermuda uye Greenland vanoumba North America nharaunda. Kumaodzanyemba, riri munzvimbo dzinopisa, chikamu Central American nharaunda.

rubatsiro

Relief uye zvicherwa kuNorth America vari achirova kusiyana. Pemvura kondinendi anomiririrwa mu kusiyanisa - kune makomo uye canyons, mapani uye zvikomo. Vazhinji ndima inogarwa pamapani kumativi maviri Muganhu wavo makomo. Kukwirira mapani anogona siyana pakati mashomanana zana metres, izvo zvinoita kuti zvikuru Wavy nomunzvimbo dzine.

Kuchamhembe chikamu Laurentian Upland iri bordered kurutivi rwezasi ngetani huru madhamu. Effect rechando kupa ndokudzora zvakaumbwa matombo uye zvikomo, paumbwe zvanza. Kumaodzanyemba vari nemumakomo Central Valley, uye zvakanaka shure kwavo - the Mississippi mupata.

Kumadokero chikamu Papurazi Great vari - mujinga mezvikomo of Cordillera. Paridzira kusvika 1,500 metres kureba. Cordillera ndivo kupfuura nedanga vematunhu, kufadza pakakwirira - ndiye peGomo McKinley muna 6193 mamita. Vanoumba kumabvazuva chikamu Rocky Mountains (4,200 m) uye Mountains Cascade.

Kumabvazuva akaronga Appalachian anomiririrwa svikiro makomo marefu pamwe yoga arrays anosvika 2000 mamita. In rwezasi kondinendi vari Mexican uye Atlantic mumhenderekedzo yegungwa mubani, isingadariki makubhiti mazana maviri. Off mhenderekedzo, vakapa mbariro, tenuka, lagoons, akasvipira mumwe.

geotectonic mamiriro

The North American kondinendi iri nheyo pachikuva, akawanda zvinotora yeCanada Shield, akaumba mukutanga Precambrian. Its micheto vari Haatauri pane deposits mutobvu, nickel, ndarama, cobalt ores uye nezvimwe zvicherwa muNorth America.

Kubva kumabvazuva kusvika Canadian Shield Appalachian bindepinde. In izvi akapeta-chezvakaipa makomo vakatanga dzinotsanagura kuparadzwa. Blurred nzvimbo akashandura kumupata, uye dombo zvikuru nemishonga akasiya dziri kwakadzikira.

Kumadokero chikamu kondinendi iri Cordilleran nharaunda avhareji Kumbofungatira, yakaumbwa nokuda kudhumhana pakati tectonic kwamahwendefa. Izvi mberi nhasi. Paumbwe Cordilleras nemarererwo rechando. Naizvozvo, munharaunda ino dziri zvose sedimentary uye igneous zvicherwa muNorth America.

Plains Great iri pamuganhu pachikuva uye Cordillera. Vari inoumbwa zvomumvura uye Continental sediments. Zvakafanana kwakatangira uye Central Valley. In zvavo kumaodzanyemba-kumabvazuva chiso karst matombo, kutanga inovhiringidza yokuchinja zvakadzama - nemapoka Cave. Sedimentary matombo akaumba uye Mexican nokumapani.

North America: zvicherwa (zvishoma)

The Geological Murongerwo iri kukosha kuti paumbwe dzimwe chicherwa mari. Pamusana yayo chaiyo yakarongeka, kuti zvicherwa kuNorth America vari panenge yacho.

In Canadian nhoo nzvimbo dzinokosha deposits kuti uranium exchange ores uye simbi, molybdenum, nickel, mhangura. Munguva mumhenderekedzo yegungwa dzakaderera, uyewo ari Cordilleras uye Alaska muri matura Tourism. Pano mined zvicherwa dzakadai mafuta North America negasi.

Nechepakati nharaunda uye dzegirini vari Appalachian marasha deposits. In Cordilleras vari siyana sedimentary uye magmatic zvicherwa, zvakadai sendarama, ores vasiri ferrous simbi, nemekiyuri. deposits makuru phosphate dziri pamusoro kweItari inonzi Florida.

Zvicherwa North America: tafura

Nokuti maonero nani takasarudza kuisa vose mashoko uye akapa ari tafura, iro rinotaurwa pazasi.

mhedziso

The kondinendi yose North America iri kuchamhembe uye kumadokero hemispheres panyika. nzvimbo yayo, dzinongoitika ezvinhu uye Geological marongerwo kukanganiswa paumbwe chicherwa mari.

Mikuru zvicherwa kuNorth America - zviri non-ferrous simbi ores, nematallicheskie mhangura uye Tourism. Pakati pavo, negasi, mafuta, marasha, phosphates, uranium exchange, kutungamirira, zingi, nickel, sirivha mhangura, ndarama, Platinum uye nevamwe.

Nokuda huru nhamba uye siyana mari, zviviri zvikuru inoti iri huru vanokwanisa kuzviriritira kwete kutarisira kuchengetwa nevamwe nyika.