为什么火山发出这么多二氧化硫和二氧化碳?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 04 - 07 - t05:05:25z //www.hoelymoley.com/feeds/question/2250 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/2250 12 为什么火山发出这么多二氧化硫和二氧化碳? AlexLipp //www.hoelymoley.com/users/389 2014 - 07 - 10 - t17:52:58z 2022 - 11 - 01 - t20:46:06z 地幔< p >从我的理解,在一个高度降低的状态,所以我不明白为什么一个火山将会释放一种高度氧化二氧化硫等气体。< / p > < p >太氧化气体二氧化碳排放的火山,然而我证明它的发射由于二氧化碳是美联储不断俯冲到地幔的碳酸盐沉积物,这是正确的吗?如果这是真的,为什么仍然在大洋中脊二氧化碳排放吗?< / p > < p >还是都错了,和气体被释放,因为他们仍在从固态地幔脱气过程中如果异构分离分离地幔的气氛。如果<强> < /强>是这样,为什么其他气体分离但没有这两个我已经提过? < / p > //www.hoelymoley.com/questions/2250/-/2308 # 2308 13 由Gimelist回答为什么火山发出这么多二氧化硫和二氧化碳? Gimelist //www.hoelymoley.com/users/725 2014 - 08 - 01 - t10:55:15z 2022 - 11 - 01 - t20:46:06z < blockquote > < p >地幔处于一个高度减少状态< / p > < /引用> < p >这并不是完全正确的。核心是在一个高度减少状态,但是地幔并不一定减少,并在某些地方很氧化。地幔是异构的。< / p > < blockquote > < p >但是我证明其排放,因为二氧化碳是美联储不断俯冲到地幔的碳酸盐沉积物,这是正确的吗?< / p > < /引用> < p >地幔中的二氧化碳并不一定来自俯冲的碳酸盐。< / p > < blockquote > < p >还是都错了,和气体被释放,因为他们仍在从固态地幔脱气过程中如果异构分离分离地幔的气氛。如果是这样的话,为什么其他气体分离而不是两个我已经提过吗?< / p > < /引用> < p >并不完全准确。虽然确实的一些气体在大气中来自core-mantle-crust系统的分化,一个流行的理论认为,许多分化后的气体通过其他行星如彗星和陨石。你也暗示二氧化碳和二氧化硫是唯一两个火山释放的气体。不。水蒸气也发出(通常比其他两个)和其他气体。 It's just that less people care about the water and it gets less publicity, because, well, it's just water. There are other gases that are emitted as well: nitrogen, the noble gases. But they are much less common than the other two. They are not the only gases.

The authors of Fluxes and sources of volatiles discharged from Kudryavy, a subduction zone volcano, Kurile Islands write:

Several potential sources for CO2 can be identified: (1) hotspot-type mantle, (2) MORB-type mantle, (3) subducted oceanic crust (MORB), (4) marine carbonate, (5) organic C from crustal and subducted sediments

They also give a table which states that in island arc volcanoes, 12% of carbon is sourced from the mantle, 67% is sourced from carbonates and 21% is organic carbon. Note that this only gives the amount degassed from volcanoes in subduction zone arcs. This does not mean that all carbonate-hosted carbon is released from the rocks to be degassed. I read somewhere that only 50% is degassed, and the rest is lost to the deep mantle. I would also expect that MORB magmas will have significantly less carbonate-sourced carbon.

Also, The deep carbon cycle and melting in Earth's interior may be of interest.
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