Magma

Magma
Enghraifft o:type of material Edit this on Wikidata
Mathhylif, carreg, sylwedd anorganig, cymysgedd Edit this on Wikidata
Dynodwyr
Freebase/M/09bzh edit this on wikidata
Thesawrws y BNCF34964 edit this on wikidata
QuoraMagma edit this on wikidata
Tudalen Comin Ffeiliau perthnasol ar Gomin Wicimedia

Deunydd naturiol tawdd o dan wyneb y Ddaear yw magma. Mae pob craig igneaidd yn cael ei ffurfio ohono. Ar wahân i graig dawdd, gall magma hefyd gynnwys dŵr a hylifau eraill, crisialau a swigod nwy. Dim ond o dan y ddaear y mae magma i’w gael: pan ddaw allan o’r gramen drwy weithred folcanig, mae’n colli rhai o’i gydrannau anweddol fel dŵr a nwyon toddedig ac yn troi’n lafa.[1][2]

Cyfeiriadau

  1. ↑ Bowen, Norman L. (1947). "Magmas" (yn en). Geological Society of America Bulletin 58 (4): 263. doi:10.1130/0016-7606(1947)58[263:M]2.0.CO;2. ISSN 0016-7606. https://archive.org/details/sim_geological-society-of-america-bulletin_1947-04_58_4/page/263.
  2. ↑ Greeley, Ronald; Schneid, Byron D. (1991-11-15). "Magma Generation on Mars: Amounts, Rates, and Comparisons with Earth, Moon, and Venus" (yn en). Science 254 (5034): 996–98. Bibcode 1991Sci...254..996G. doi:10.1126/science.254.5034.996. ISSN 0036-8075. PMID 17731523. https://archive.org/details/sim_science_1991-11-15_254_5034/page/996.
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