Uniformitarianism
fossils
radioactive decay
48 million
after
The youngest age of the shale is 910 ka. According to the principle of inclusions, the shale formed before the tephra, so the tephra must be younger than 910 ka.
The great rift valley was formed by violent subterranean forces that tore apart the earth's crust. These forces caused huge chunks of the crust to sink between parallel fault lines and force up molten rock in volcanic eruptions.
Answer:
The East African plate has a divergent boundary.
Explanation:
A pollitical map focuses on boundaries between entities like countries states of counties they are generally brigther colors to easly distinguish the boundaries a phisical maps focuses on the geography of the area and will often have shaded relief to show the mountains and valleys.
The correct answer is - faster.
The rates of erosion in the present are faster than what they have been throughout most of the geologic past. The reason for this increase in the speed of the erosion has primarily been attributed to the human activity. The humans tend to destroy lot of vegetation, be it forests, shrub-lands, or grasslands in order to clear up space for their activities and needs. This leads to much higher exposure of the soil to the process of erosion. The reason for that is that the soil is losing its natural protector form the erosion, the plants and their roots, which are holding the soil tightly and also provide cover for it. Once this natural protection is gone, the soil becomes loos, nothing is holding it, so the natural elements are eroding it very easy and quick.
