Central Valley: sebaka libaka, boemo ba leholimo, haholo-holo

Central Valley - e leng sebaka sebakeng e le setsi sa Amerika Leboea. Ke tlaase ho bua leshano sebaka, entsoe ka lithoteng tsa mefuta e sa tšoaneng: Moraine, letšeng, loess le outwash. Ka le moeli oa leboea-bochabela ea tsamaiso Appalachian lithaba karolong e ka boroa-bochabela - le Laurentian Hills. Moeli o ka boroa e fihla Koung Mosambik Plain. Karolong e ka leboea, tobane le libakeng tse Great naha.

Lithoteng otlolla tsa US le Canada. Moo o ka fumana e le motse-moholo sebakeng se seholo, e leng e tsejoa ka mesebetsi ea eona mahaeng a moruo. sebaka sena e hantle haholo tsoetseng pele. Ena e go tlhofofadiwa ke utloa ho re kokololo, 'me maemo a klimate. 75% ea tšimo kaofela ba makhasi a tlasa metsana le masimo. Toropo tsebahalang ka ho fetisisa, e teng mona, ke Chicago. Ho joalo, a re ke re sheba specifics ea tšimong.

Features le sebopeho sa naha ea Central Lithoteng

Central Valley Karolelano ea bophahamo ba 150-500 m. Ba entsoe ka majoe ba Upper le Lower Paleozoic tse lokisetsa tsekaletse le karolo e 'ngoe le tšekamelo ea ho ea ka leboea. Ka leboea-bochabela, moo lithoteng tsa finyella Great Lakes ea liphallelo e sebakeng se hlahisa ka mokgwa wa maporogo tebang le matsoapong tsoekame - cuesta. Di entsoe ka har'a carbon faeba, Silurian le sediments Devonian. Ka ho fetisisa le bitsoa Cuesta thehoa sediments Silurian. Ka e mong oa bona, ha a le ke motsoako oa lona noka Niagara, o thehoa e mong oa tsa maeto tsebahalang ka ho fetisisa ea North America - Niagara Falls.

Central Valley ka nako e ngata koahetsoeng ka strata ea mobung glacial. Ke bedrock tlaase. Sena se bontša hore sebaka sena e ho pheta-pheta li behiloe tlas'a e koahetsoe ke glaciers, mohlomong, ka nako Pleistocene.

Sebaka - ka ho fetisisa nang le baahi sebakeng sa Amerika Leboea. Ha e le hantle ena e hlaha tsa histori. Batho ba mona khahloa linaheng tse nonneng, le o nako e telele bile e sebakeng e sebediswa bakeng sa temo. Hona joale, ho feta 90% ya limela matsoalloa e timetsoa, 'me e le ka morung-steppe le moru nkeloa sebaka ke dimela lijalo.

Lithoteng bohareng tse maralleng, dissected ke utloa ho re kokololo liphula. Di entsoe ka majoe sedimentary - lejoe la mokoetla. Feela karolong e ka boroa ea holim 'a lefika le sefahleho majoe - le lithabeng Boston, e leng estimular ea tsamaiso Appalachian. Karolelano ea bophahamo fihla 600-800 m.

boemo ba leholimo

maemo a klimate tikolohong eo fetohile ka tsela e latitudinal. Re lokela ho hlokomela hore ha ba ka ho lekaneng e tšoanelang. Great tšusumetso e ka sebopeho sa boemo ba leholimo sa na le maqhubu a batang le mofuthu tsoang Atlantic. Summer ka Central Lithoteng mofuthu le dithemparetjha karolelano ea +20 ... + 22 ° C. Sebakeng se karolong e ka boroa selekanyamogote le ka ema hore a +28 ° C. Mariha sebakeng sena e batang le frosty. Hoo e ka bang ho pholletsa le nako ea 'na ea freezing le dithemparetjha. Karolelano ea isotherm January - -12 ... -16 ° C. The pula karolelano ea selemo le selemo e 750-900 limilimithara. Boholo ba bona ba tobane le lehlabula, empa mariha e lehloa le khetheha hangata, eaba ba etsa snowpack tsitsitseng. Ba baholo le ba Central Valley na boemo ba leholimo ho ena le tšoanang.

lirafshoa

Sebakeng seo ho na le ea bohlokoa haholo moruong. Central Valley fumanehileng mobung oa mashala, oli le khase. ho boetse ho na ba epilwe tafole letsoai le barite. Mashala mobung tse ka leboea-bochabela, haufi le tsamaiso ea thabeng ea Appalachians. A masimo a oli kgolo di fumaneha karolong e ka leboea ea Central Lithoteng.

Flora le liphoofolo

Sebaka Central Lithoteng ke ea le zounu ya deciduous le meru e tsoakiloeng. Leha ho le joalo, ba le motso limela sireletsa feela libakeng tse nyenyane, ho arola masimo le makhulo a. Masimo a lema le lijalo breakable, poone. litoeba feela jala ya limela.

Central Valley - bohlokoa ka ho fetisisa temo sebakeng sa United States. 85% ea lihlahisoa tsohle tsa temo ya hlahiswa sebakeng sena.