During the last four years our knowledge of the geology of the terrestrial planets has advanced rapidly. The advances are particularly noticeable for Venus and Mars. Improved understanding of Venus has come largely from the Pioneer Venus mission (Colin, 1980), which has given us our first global...
The 17th Study of the Earth's Deep Interior (SEDI) meeting was held in Zurich, Switzerland, from 11th July to 15th July 2022. The SEDI group is a Union Committee of the International Union of Geology and Geophysics dedicated to the Study of the Earth's D
Data from the Mars Exploration Rovers (MER) showed that bright dust deposits on opposite sides of the planets had similar compositions, suggesting that the Martian dust comprises a global unit, and is not strongly influenced by the composition of local rocks37. Here we show that a large ...
Most of the martian meteorites are volcanic basalts; most of them are also relatively young—about 1.3 billion years old. We know from details of their composition that they are not from Earth or the Moon. Besides, there was no volcanic activity on the Moon to form them as recently as 1.3...
Subduction related to the ancient supercontinent cycle is poorly constrained by mantle samples. Sublithospheric diamond crystallization records the release of melts from subducting oceanic lithosphere at 300–700 km depths1,2 and is especially suited
Scientists who compare the geology of other planets to Earth are planetary geologists. Some geologists study the Moon. Others look for petroleum. Still others specialize in studying soil. Some geologists can tell how old rocks are and determine how different rock layers formed (figure 2). There ...
Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. Geologists study the mineralogical composition of rocks in order to get insight into their history of formation. Geology determines the relative ages of rocks found at a give...
Additionally, they are typically wider, shorter, and more oval-shaped than other types of domes. These properties make them difficult to locate in optical or spectral images since they do not create an abrupt change in the topography or the composition of the surface. This is especially true ...
4b). Black Beauty is a shergottite breccia that may be a sample of mixed mantle sources and it falls near primitive mantle (PM) composition. The other shergottites have Zr/Nb ratios both below and above primitive mantle. Even more important is the fact that none of the lunar and very ...
Collisional erosion and the non-chondritic composition of the terrestrial planets. Phil. Trans. R. Soc. Lond. A 366, 4205–4238 (2008). Google Scholar Sharp, Z. D. & Draper, D. S. The chlorine abundance of Earth: implications for a habitable planet. Earth Planet. Sci. Lett. 369–...