KT边界的酸雨特征-地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30个来自www.hoelymoley.com 2023 - 04 - 01 - t07:37:04z //www.hoelymoley.com/feeds/question/16266 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/16266 7 KT界线酸雨特征 巴克刺 //www.hoelymoley.com/users/15191 2019 - 02 - 16 - t13:50:41z 2019 - 02年- 27 - t07:22:54z 我在沃尔特·阿尔瓦雷斯(Walter Alvarez)的《雷克斯霸王龙和末日陨石坑》(T. Rex and the Crater of Doom)一书中读到,地球与大流星碰撞导致K-T灭绝,催化了大气中的氧和氮分子反应形成一氧化氮,而一氧化氮与水结合后又形成了具有强腐蚀性的硝酸。此外,撞击被认为使硬石膏中含有的大量硫挥发,从而形成硫酸。< / p >

This question refers to a thickness of $\pu{1.8m}$ for the section where iridium could be detected in the K-T boundary, suggesting that the resolution may be too low to note the effects of acid rain following the collision.

Is there evidence in the geological record of the formation of these acid species thought to be associated with the collision, say from deposits and/or effects of the ensuing acid rain?

//www.hoelymoley.com/questions/16266/-/16346#16346 2 基思·麦克拉里关于KT边界酸雨特征的回答 基思·麦克 //www.hoelymoley.com/users/6535 2019 - 02年- 27 - t05:51:11z 2019 - 02年- 27 - t05:51:11z

估计硫释放 325亿吨= 32.5万兆克。这个图中的数字是teragrams

硫磺周期enter image description here

所以释放是$\约1000\times $今天的年度硫磺周期。我认为大多数含硫化合物会被冲进海洋,然后沉积成沉积物。我找不到目前海洋中有多少硫,这篇文章说十亿吨(因为你能闻到它)。我也不知道增加的硫沉积的速度有多快。< / p >

Another issue is that, unlike iridium, there is normally a lot of sulfur in marine deposits, so it is hard to distinguish what comes from Chicxulub.

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