The Tissint Martian meteorite is an unusual depleted olivine‐phyric shergottite, reportedly sourced from a mantle‐derived melt within a deep magma chamber. Here, we report major and trace element data for Tissint olivine and pyroxene, and use these data to provide new insights into the dynamics of the Tissint magma chamber. The presence of irregularly spaced oscillatory phosphorous (P)‐rich bands in olivine, along with geochemical evidence indicative of a closed magmatic system, implies that the olivine grains were subject to solute trapping caused by vigorous crystal convection within the Tissint magma chamber. Calculated equilibration temperatures for the earliest crystallizing (antecrystic) olivine cores suggest a Tissint magma source temperature of 1680 °C, and a local Martian mantle temperature of 1560 °C during the late Amazonian—the latter being consistent with the ambient mantle temperature of Archean Earth.

中文翻译：

---

在 Tissint 橄榄石中通过 P 分区记录的火星岩浆房中的对流活动

Tissint Martian 陨石是一种不寻常的枯竭橄榄石-phyric shergottite，据报道来源于深岩浆房中地幔衍生的熔体。在这里，我们报告了 Tissint 橄榄石和辉石的主要和微量元素数据，并使用这些数据为 Tissint 岩浆房的动力学提供了新的见解。橄榄石中不规则间隔的振荡富磷 (P) 带的存在，以及表明封闭岩浆系统的地球化学证据，意味着橄榄石颗粒受到了 Tissint 岩浆室内剧烈晶体对流引起的溶质捕获。最早结晶（原始）橄榄石核的计算平衡温度表明 Tissint 岩浆源温度为 1680 °C，