Mugodhi uyu ndewechikamu chechikamu che volcanic provenance deposits mu continental lacustrine sedimentary diatomite type. Iyo dhipoziti hombe inozivikanwa muChina, uye chiyero chayo hachiwanzo pasirese. Iyo diatomite layer inochinjana nevhu revhu uye silt layer. Chikamu che geological chinowanikwa munguva inopindirana pakati pebasalt eruption rhythm. Iyo stratum yenzvimbo yemugodhi inoratidzwa mutafura iri pasi apa.
Kugoverwa kwepakati pemadhipoziti kunodzorwa neiyo paleo-tectonic pateni. Kuora mwoyo kwakakura kwegomo rinoputika mushure mekuputika kwemakomo akawanda muHimalaya kwakapa nzvimbo yekuisa diatoms. Nzvimbo dzakasiyana dzebheseni rekare uye nzvimbo yepasi pemvura mubheseni redhamu yaidzora zvakananga kugovaniswa kwemadhipoziti. Nzvimbo yekumucheto yebheseni inovhiringwa nenzizi uye nharaunda ye sedimentary haina kugadzikana, iyo isingakodzeri kurarama uye kuunganidzwa kwe diatoms. Pakati pebheseni, nekuda kwemvura yakadzika uye kusakwana kwezuva, hazvibatsiri kune photosynthesis inodiwa pakurarama kwe diatoms. Kuvhenekera kwezuva, nharaunda ye sedimentary uye SiO2 zvirimo munzvimbo yekuchinja pakati pepakati nepamupendero zvese zvinogonesa kupararira uye kuunganidzwa kwemadiatoms, ayo anogona kuumba emhando yepamusoro maindasitiri ore miviri.
Ore-bearing rock series ndiyo Ma'anshan Formation sedimentary layer, ine nzvimbo yekugovera ye4.2km2 uye ukobvu hwe1.36～57.58m. Ore layer inoitika muore-bearing rock series, ine rhythm iri pachena munzira yakatwasuka. Iyo yakazara rhythm sequence kubva pasi kusvika kumusoro ndeye: diatom ivhu → ivhu diatomite → ivhu-ine diatomite → diatomite → ivhu-ine diatom Ivhu → ivhu diatomite → diatom ivhu, pane zvishoma nezvishoma hukama pakati pavo. Pakati pe rhythm ine huwandu hwepamusoro hwe diatoms, dzakawanda dzimwechete, hukuru hukuru, uye hushoma hwevhu; ivhu remukati repamusoro uye rezasi rhythms inoderera. Pane mitsara mitatu pakati peore layer. Iyo yepasi pasi ndeye 0.88-5.67m gobvu, ine avhareji ye2.83m; chikamu chechipiri chakakora 1.20-14.71m, neavhareji ye6.9m; chikamu chepamusoro ndicho chikamu chechitatu, chisina kugadzikana, nehupamhi hwe 0.7-4.5m.
Iyo huru yemaminerari chikamu cheore diatom opal, chikamu chidiki icho chinodzokorora uye chinoshandura kuita chalcedony. Pane hushoma hwevhu hunozadza pakati pe diatoms. Ivhu rinonyanya hydromica, asiwo kaolinite uye illite. Iine hushoma hwemaminerari anokanganisa akadai sequartz, feldspar, biotite uye siderite. Zviyo zvequartz zvakasvibiswa. Biotite yakashandurwa kuita vermiculite uye chlorite. Mushonga wemakemikari weore unosanganisira SiO2 73.1% -90.86%, Fe2O3 1% -5%, Al2O3 2.30% -6.67%, CaO 0.67% -1.36%, uye kurasikirwa kwe3.58% -8.31%. Makumi makumi maviri nemaviri emhando dzemadiatoms akawanikwa munzvimbo yemigodhi, anopfuura makumi matanhatu neshanu emarudzi, iwo anonyanya kutonga ndeye discoid Cyclotella uye Cylindrical Melosira, Mastella uye Navicula, uye Corynedia mukurongeka kwePolegrass. Genus inowanikwawo. Chechipiri, kune genus Oviparous, Curvularia uye zvichingodaro.
Nguva yekutumira: Jun-17-2021