晚单板的栈上其他星球-地球科学交流江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 04 - 18 - t23:09:07z //www.hoelymoley.com/feeds/question/2795 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/2795 10 单板后期其他星球上 Neo //www.hoelymoley.com/users/32 2014 - 11 - 14 - t05:00:35z 2014 - 11 - 22 - t09:28:57z < p >有没有外部物质源事件的证据,像已故的单板在其他行星上?< / p > < p >或这一理论具体是地球吗?< / p > < p >注意,这个问题可能与< a href = " //www.hoelymoley.com/questions/96/how-and-why-did-the-oceans-form-on-earth-but-not-on-other-planets " >如何以及为什么地球上海洋的形式而不是在其他行星上?< / > < / p > < p >但这是具体问题不是水,或球粒状陨石特定。< / p > //www.hoelymoley.com/questions/2795/-/2878 # 2878 4 user889回答的晚了单板的其他星球上 user889 //www.hoelymoley.com/users/0 2014 - 11 - 22 - t09:28:57z 2014 - 11 - 22 - t09:28:57z < p >这是一个重要的和相关的问题来帮助理解地球上晚单板的过程。这样做,理解它如何可能发生,如果有的话,在其他类地行星(水星、金星、火星和月球,甚至可能是落基其他行星的卫星)。如果没有证据,然后揭示了地球的唯一性的另一个方面。< / p >

For practical reasons, my answer will focus on Mars and Venus, as according to an article specific on the topic, Dynamical and collisional constraints on a stochastic late veneer on the terrestrial planets (Raymond et al. 2013), that asserts that the late veneer was

an accretionary phase for Venus, Earth and Mars but an erosive phase for Mercury and the Moon.

There are obvious difficulties in fully answering this question; however, Raymond et al. assert that evidence exists of 'late veneer' like activity for not only the Earth, but for the Moon and Mars, from the article:

Evidence for the late veneer comes from the existence of highly-siderophile elements (HSEs) in the mantles of Earth, Mars and the Moon. Simply put, HSEs are “iron-loving” elements that tend to partition into metal and should thus be removed from a planet’s mantle during core formation.

Mantle samples are taken from Martian meteorites that have landed on the Earth and are detailed in the paper Evolution of the martian mantle inferred from the $^{187}Re$–$^{187}Os$ isotope and highly siderophile element abundance systematics of shergottite meteorites (Brandon et al. 2012) who observe the observations made by Raymond et al. as

The measured concentration of HSEs in the Martian mantle is similar to the Earth’s (Walker, 2009; Brandon et al., 2012).

Based on a conclusion made by Brandon et al. that

The relatively high HSE abundances in both planetary mantles likely cannot be accounted for by high pressure–temperature metal–silicate partitioning at the bases of magma oceans, as has been suggested for Earth. If the HSE were instead supplied by late accretion, this event must have occurred prior to the crystallization of the last martian magma ocean.

According to Raymond et al. the situation for for Venus and Mercury, the late veneer is modeled to have possibly affected their retrograde motion, but the authors admit that this is is speculative.

In the absence of sufficient samples from Mercury and Venus, it is modeling rather than sampling that the authors use to hypothesise the possible effect of the Late Veneer on them. Given Venus' size, it is likely that it, alongside Earth were the 'primary targets' of the late veneer bombardment.

Additional references:

Walker, R. J. 2009. Highly siderophile elements in the Earth, Moon and Mars: Update and implications for planetary accretion and differentiation. Chemie der Erde / Geochemistry 69, 101–125.

Walker, R. J., M. F. Horan, C. K. Shearer, and J. J. Papike 2004. Low abundances of highly siderophile elements in the lunar mantle: evidence for prolonged late accretion. Earth and Planetary Science Letters 224, 399–413.

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