Qhov qub tshaj plaws ua ntej-Baikal muaj zog folded cheeb tsam hauv Alps yog hu ua B altic Shield. Nyob rau hauv tag nrho lub sij hawm ntawm lub neej, nws tsis tu ncua nce saum hiav txwv theem. Lub B altic Shield yuav raug yaig. Lawv nthuav tawm thaj chaw sib sib zog nqus hauv txoj siv granite-gneiss ntawm lub ntiaj teb crust.
Shield qhov chaw
Ib lub ledge loj ntes ib feem ntawm sab qaum teb sab hnub poob nthuav dav ntawm East European Platform. Nws nyob ib sab ntawm cov qauv ntawm Caledonia-Scandinavia. Lawv nce mus rau ntawm cov pob zeb crystalline ntawm thaj chaw folded.
Karelia, Finland, Sweden, Kola Peninsula yog them los ntawm B altic Shield. Ib tug loj ledge khiav los ntawm Murmansk thiab Leningrad cheeb tsam. Yuav luag tag nrho Scandinavian Peninsula yog nyob ntawm nws.
Landforms
Txoj kev nyem ntawm cov ntaub thaiv npog tau tsim los ntawm kev cuam tshuam ntawm glaciations. Muaj ntau lub cev dej ntawm no yog framed los ntawm winding coastlines. Lawv, tsoo rau hauv av, tsim ntau bays thiab Islands tuaj. Sab qaum teb ntawm lub folded uplift yog tsim los ntawm ancient schists thiab igneous pob zeb. cov qauvpopping mus thoob plaws qhov chaw. Lawv tsuas yog them rau qee qhov chaw los ntawm cov khaub ncaws tsis muaj zog ntawm Quaternary deposits.
Lub pob zeb B altic Shield tsis tau npog los ntawm hiav txwv dej txij li lub sijhawm Paleozoic qis, uas yog vim li cas nws thiaj raug puas tsuaj. Crumpled folds nrog ib tug complex qauv tau dhau los ua nyuaj thiab nkig. Yog li ntawd, thaum lub ntiaj teb crust oscillated, cov kab nrib pleb tshwm nyob rau hauv nws, uas tau ua cov ntsiab lus tawg. Cov pob zeb poob sib nrug, tsim cov blocks loj.
Txoj kev nyem ntawm Lavxias Platform
Glaciers zawv zawg los ntawm qhov chaw siab tshaj ntawm Scandinavian roob rhuav tshem lub hauv paus crystalline, nqa cov pob zeb xoob dhau ntawm ciam teb ntawm Lavxias platform. Cov qauv mos, sib sau ua ke, tsim moraine deposits.
Lub pob zeb yaj yaj tau ntev ntev tau ua rau lub ntsej muag B altic. Cov duab ntawm lub nyem ntawm lub ledge tau txais accumulative outlines. Ozes, drumlins, thiab lwm yam. tshwm sim hauv thaj chaw folded.
Txoj kev cawm ntawm Karelian-Kola thaiv
Kola Peninsula thiab Karelia yog tsim los ntawm cov pob zeb uas siv tsis tau rau kev yaig. Lawv yog impervious rau dej. Txawm hais tias cov kwj dej hauv zos muaj cov yam ntxwv ntawm cov dej ntws ntau, lawv tsis tuaj yeem tsim cov kwj deg. Riverbeds yog cluttered ntawm no nrog ceev ceev thiab waterfalls. Dej, dej nyab ntau yam kev nyuaj siab, tsim ib lub pas dej ntawm lub folding uplift.
Txoj kev nyem ntawm daim thaiv no tsis zoo ib yam. Ib lub roob siv nyob rau sab hnub poob ntawm Kola Peninsula, nruab nrab ntawm cov ridges uas muaj kev nyuaj siab loj nyob. Cov roob siab tshaj plaws nce siab saum lub Khibiny thiab Lavozero tundras.spades.
Sab hnub tuaj ntawm cov ceg av qab teb yog nyob los ntawm ib lub toj siab me ntsis dai rau ntawm ntug dej hiav txwv Crimson. Lub roob me no sib koom ua ke nrog thaj av qis uas ua rau Hiav Txwv Dawb.
Nyob hauv thaj av Karelia, B altic Shield muaj cov yam ntxwv toj roob hauv pes. Lub topography ntawm lub folded cheeb tsam nyob rau hauv qhov chaw no yog denutation-tectonic. Lub ntiaj teb crust yog dissected muaj zog ntawm no. Kev nyuaj siab, nrog rau cov swamps thiab pas dej tau tawg, hloov nrog pob zeb ridges thiab toj.
Maanselkä toj roob hauv pes nyob ze Finland. Nws nto yog heev dissected. Ntawm qhov folded uplift, nyem ntawm glacial, accumulative thiab exarative configurations nyob txhua qhov chaw tau sau tseg. Lub B altic Shield yog dotted nrog yaj hauv pliaj, pob zeb loj, eskers, hav thiab moraine ridges.
Geological qauv
Lub fold uplift tau muab faib ua peb qhov chaw: Karelian-Kola, Svecofennian thiab Sveco-Norwegian. Yuav luag tag nrho hauv Russia yog thaj av Karelian-Kola thiab thaj chaw sab qab teb sab hnub tuaj ntawm Svecofenn thaiv.
Cov qauv geological ntawm Karelian-Kola ntu tsis zoo ib yam li thaj av Hiav Txwv Dawb, uas yog tus cwj pwm los ntawm kev tsim Proterozoic ntau heev. Qhov no yog vim peb yam: teej tug mus rau txawv blocks ntawm geosyncline, keeb kwm kev loj hlob, txawv nyob rau hauv qhov tob ntawm erosional seem. Ntu Karelian-Kola, qhov sib piv rau lub Hiav Txwv Dawb thaiv, tau qis qis dua.
Qhov feem ntau ntawm cov qauv tectonic ntawm ntu yog kev tawm tsam sab qaum teb sab hnub poob ntawm thaj tsam. Cov complexes tsim los ntawm pob zeb thiab folds tsuas yog qee zaus tso cai rau lawv tus kheej mus rau qhov kev coj ua meridian lossis latitudinal.
Txoj kev sib tw thiab folds kiv cua tawm mus rau sab qab teb sab hnub tuaj thiab sib sau ua ke rau sab qaum teb hnub poob. Minerals muaj kev sib txuas nrog cov pob zeb qub thiab cov pob zeb metamorphic uas tsim lub B altic Shield. Cov qauv tectonic raws cov ciam teb ntawm ntu yog sawv cev los ntawm thaj tsam sib sib zog nqus ua txhaum.
Qhov chaw ntawm Precambrian intrusive complexes thiab lawv cov metallogeny yog tswj hwm ntawm kev sib cais. Cov pob zeb tau muab tso rau hauv cov hlua txuas mus rau sab qaum teb hnub poob. Lawv sib npaug mus rau qhov chaw uas tshwm sim ntawm Precambrian geostructures.
Nyiaj
Lub B altic Shield yog nplua nuj nyob rau hauv deposits. Minerals ntawm no yog faib raws txoj siv sia. Tshwj xeeb yog tsom rau peb ntawm lawv. Copper-nickel ores tau muab zais rau hauv Paj Txoj siv ntawm Kola Peninsula. Tus qauv ntawm Windy Belt, kis thoob plaws thaj av Karelian thiab Arkhangelsk, tab tom kawm ua haujlwm. Hauv ntu Karelian-Kola, muaj kev nthuav dav siv nrog ferruginous quartzites, kyanite shales, thiab ntau yam pegmatites. Kev sib sau ntawm pob zeb yog tswj hwm los ntawm lithological-stratigraphic thiab structural-tectonic yam.
