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Climate cycles may explain how running water carved Mars' surface features
Climate cycles running water carved Mars surface features
2016/12/13
Dramatic climate cycles on early Mars, triggered by buildup of greenhouse gases, may be the key to understanding how liquid water left its mark on the planet's surface, according to a team of planetar...
Morphology and surface features of olivine in kimberlite: implications for ascent processes
Morphology surface features olivine kimberlite ascent processes
2015/1/6
Most kimberlite rocks contain large proportions of ellipsoidal-shaped xenocrystic olivine grains that are derived mainly from disaggregation of peridotite. Here, we describe the shapes, sizes and surf...
Observation of surface features on an active landslide, and implications for understanding its history of movement
surface features an active landslide history of movement
2009/12/10
Surface features are produced as a result of internal deformation of active landslides, and are continuously created and destroyed by the movement. Observation of their presence and distribution, and ...
Roundness and surface features of quartz grains in Middle Devonian deposits of the East Baltic and their palaeogeographical implications
East Baltic Devonian roundness of detrital particles surface texture of quartz
2009/10/21
The roundness and surface texture of quartz grains were studied in Devonian sediments of 32 drill cores. Roundness was estimated in more than 800 samples and surface textures were examined under scann...