Baltic Shield: landform, tectonic tsarin da kuma ma'adanai

Baltic garkuwa kira mafi tsufa dobaykalskaya iko folded yankin na Alps. Cikin dukanin tsawon zama shi yakan yi haƙuri bisa teku matakin. Baltic Garkuwa yiwuwa ga yashewa. Da suke bayyanãwa da m zone a cikin dutse-gneiss bel na duniya ta ɓawon burodi.

garkuwa Location

M kama da tsinkaya na arewa maso yammacin expanses na gabashin Turai dandali. Tare da su gefe da gefe tsarin Caledonia-Scandinavia. Sun ci gaba a kan crystalline kankara folded yankin.

Karelia, Finland, Sweden, da Kola Larabawa maida hankali ne akan Baltic Shield. Manyan protrusion gudanar a Murmansk da Leningrad yankin. Sun mamaye kusan dukan Scandinavian Larabawa.

landforms

Ƙarƙashin rinjayar glaciations kafa panel taimako. Mutane da yawa waha an firam da Tuddan ƙasar. Suna yankan cikin ƙasar, forming yawa bays da kuma tsibiran. A arewacin pleated dagawa kafa daga zamanin d schists da igneous kankara. Tsarin zo da surface ko'ina. Su ne kawai a wasu wuraren rufe m raincoats Quaternary sediments.

Crystalline Baltic Garkuwa ba a rufe ta ruwa ruwa tare da Lower Paleozoic zamanin, saboda abin da aka hõre, halakarwa. Crumpled folds da hadaddun tsarin tsiwirwirinsu wuce kima taurin da brittleness. Saboda haka, a lokacin da ɓawon burodi da aka bambanta, akwai bayyana fasa, ya zama wani wuri na karaya. Species fadowa baya, forming m tubalan.

Relief na Rasha Platform

Glaciers, zamiya saukar da gangara na Scandinavian duwãtsu, lalata crystalline ginshiki kankara kwance daure bayan Rasha dandali. Cushe tsarin, tara, kafa moraine.

Narkewa gleiser dogon lokaci vigorously plied Baltic Shield. Nau'i na taimako a leji samu accumulative siffar. A folded yanki bayyana eskers, drumlins, da sauransu.

Relief Karelo- block Kola

Kola Larabawa da kuma Karelia an hada da duwatsu, kusan ba razmyvam. Su ne mai gagarar ruwa. Ko da yake gida koguna ne halin da yawa dake kwarara, suka sami ikon ci gaba da kwaruruka. Riverbeds cluttered nan sashen kogin da kuma waterfalls. Ruwa ambaliya yawa depressions kafa a kan folded dagawa lake.

The taimako a wannan ɓangare na ba-uniform jirgin. A cikin Kola Larabawa lullube yamma dutsen bel, wanda jeri tsakanin manyan ciki. A kan Khibiny tundras da Lavozerskimi karu har zuwa mafi girman dutse kololuwa.

A gabas na sashin daukan slaboholmistoe Filato rataye a kan ruwan teku Bagretsovogo. Wannan kananan tudun Yanã shigar da filayen kwari firam White Sea.

A cikin yankin na Karelia yana da halayyar wuri mai faɗi Baltic Shield. Landform folded yanki a wannan lokaci denutatsionno-tectonic. The Earth ta ɓawon burodi yana dauke da fashe. Depressions, wanda suke warwatse swamps da tabkuna suna cike da koyaswa m ridges da tuddai.

Kusa da Finland miƙa tudun Maanselkya. Its surface ne musamman dissected. A zare dagawa fāɗin duniya bikin glacial ƙasa, accumulative da ekzaratsionnyh jeri. A Baltic Garkuwa ne cike da gidajen gona da tumaki da shugabannin, manyan boulders, eskers, moraine ridges da kwaruruka.

Sashen fasalin

Folded dagawa geosegmenta kasu kashi uku: da Karelian-Kola, Svecofennian da Sweco-Norwegian. A Rasha kusan gaba ɗaya ne Karelian-Kola yankin da kuma kudu maso gabashin yankuna Svecofennian block.

A ma'aunan kasa tsarin da Karelian-Kola kashi ne ba kamar a cikin fadar White Sea yankin, halin da m cin Proterozoic tsarin. Wannan shi ne saboda uku haddasawa: na zuwa daban-daban tubalan Geosyncline, da tarihi cigaban dabam-dabam yashewa zurfin yanka. Karelo- Kola kashi sabanin Belomorian block karfi tsallake.

A na kowa alama na tectonic tsarin da segments ne a arewa maso yammacin stretch na yankunan. Gidaje kafa ta kankara da folds, kawai lokaci-lokaci damar da su karkatar da Meridian ko latitudinal shugabanci.

Gidaje da kuma folds, ya karya up kamar fan zuwa kudu maso gabashin, converge a arewa maso yamma. Ma'adanai genetically nasaba da tsoho igneous da metamorphic kankara kafa Baltic Shield. Tectonic tsarin tare da iyakoki da yankin segments gabatar zurfin samu karaya.

Karkashin iko da tsãgewar ƙwãyar ne wuri na Precambrian intrusive gidaje da su metallogeny. Breeds suna harhada cikin zones, mikawa a arewa maso yammacin. Su layi daya da na kowa wurare na abin da ya faru na Precambrian ma'aunan kasa Tsarin.

ajiya

Rich adibas na Baltic Shield. Albarkatun ma'adinai ana raba kan bel. Musamman da hankali ne a kan accented uku daga cikinsu. A Flower sashi daga cikin Kola Larabawa boye jan-nickel ores. Rayayye karatu Vetrenyi Belt tsarin bisa Karelian sujada, kuma Arkhangel'skii asashe. A Karelian-Kola kashi ban sha'awa sau da ferruginous quartzites, schists, kyanite kuma daban-daban pegmatites. Cluster sawmills gyara lithologic da stratigraphic da kuma tsarin al'amurran tectonic.