Experimental and petrological investigations into the origin of the lunar Chang'e 5 basalts

Haupt, CP; Renggli, CJ; Klaver, M; Steenstra, ES; Berndt, J; Rohrbach, A; Klemme, S

Forschungsartikel (Zeitschrift) | Peer reviewed

Zusammenfassung

The origin of young Chang’e 5 (CE5) lunar basalts is highly debated. We present results from high-pressure, hightemperature (P-T) phase equilibria experiments, and from petrological modeling, to constrain the depth and temperature of the source of these unique mare basalts. The experimental results indicate that the CE5 basalts could have formed either by melting clinopyroxene and Fe–Ti oxide-rich cumulates in the shallow lunar mantle, or by extreme fractional crystallization of a hot Mg-rich parental melt. Our findings corroborate the local preservation of significant heat (of at least 1200 ◦C) in the lunar mantle that is needed to generate basaltic melts of CE5 compositions at 2 Ga. We argue that the CE5 basalts are most likely formed by melting of Fe and Ti-rich cumulates in the shallow lunar mantle as extreme fractional crystallization of olivine and plagioclase from picritic parental melts requires too high temperatures in the lunar mantle (> 1500 ◦C) at ~2 Ga.

Details zur Publikation

FachzeitschriftIcarus
Jahrgang / Bandnr. / Volume402
Seitenbereich15625null
StatusVeröffentlicht
Veröffentlichungsjahr2023
DOI10.1016/j.icarus.2023.115625
Link zum Volltexthttps://www.sciencedirect.com/science/article/abs/pii/S0019103523002026
Stichwörtermoon, experimental petrology, mineralogy, basalt, chang'e 5

Autor*innen der Universität Münster

Berndt-Gerdes, Jasper
Professur für Petrologie (Prof. Klemme)
Haupt, Cordula Pauline
Professur für Petrologie (Prof. Klemme)
Klaver, Martijn
Professur für Geochemie (Prof. Stracke)
Klemme, Stephan
Professur für Petrologie (Prof. Klemme)
Rohrbach, Arno
Institut für Mineralogie
Steenstra, Edgar Sikko
Professur für Petrologie (Prof. Klemme)