Xe, produced from the radioactive decay of extinct I, and Xe, produced from extinct Pu and extant U, have provided important constraints on early mantle outgassing and volatile loss from Earth. The low ratios of radiogenic to non-radiogenic xenon (Xe/Xe) in ocean island basalts (OIBs) compared to mid-ocean ridge basalts (MORBs) have been used as evidence for the existence of a relatively undega...

Introduction: Recent researches are shedding new lights on the evolution of Valles Marineris and neighboring chaotic terrain and outflow channels. For example , Chapman and Tanaka [1] proposed a hypothesis with an emphasis on magma-ice interactions for the formation of chasmata, interior deposits, chaotic terrain , outflow channels, and surface materials. Terrestrial analog studies are useful i...

The Basalt of Summit Creek is an enigmatic basalt unit that is about 55 million years (Ma) in age, located south of Mount Rainier. These basalts formed in a transitional time between the formation of the Coastal Range Basalts and the present Cascade arc. Through geochemical and paleomagnetic techniques, samples were collected and analyzed. Paleomagnetic samples showed nearly complete post erupt...