banded coal
71Schist — The schists constitute a group of medium grade metamorphic rocks, chiefly notable for the preponderance of lamellar minerals such as micas, chlorite, talc, hornblende, graphite, and others. Quartz often occurs in drawn out grains to such an… …
72Grand Canyon — This article is about the canyon in the southwestern United States. For other Grand Canyons, see Grand Canyon (disambiguation). Grand Canyon …
73Earl Shilton — Infobox UK place official name= Earl Shilton country = England os grid reference= SP472980 latitude= 52.57777 longitude= 1.30491 map type= Leicestershire civil parish= population = shire district= Hinckley and Bosworth shire county=… …
74Timeline of environmental history of New Zealand — This is a timeline of environmental history of New Zealand. These events relate to the more notable events affecting the natural environment of New Zealand as a result of human activity.: Pre 1800s 1800s 1830s 1840s 1850s 1860s 1870s 1890s 1900s… …
75History of Sussex — Prehistoric Sussex= Archaeological collections contain a neanderthal handaxe, found at Hamsey near Lewes, dated to perhaps 80,000 years ago.Later archaeological finds have shown that Mesolithic peoples had arrived in the area today known as… …
76Economic history of the United States — The economic history of the United States has its roots in European settlements in the 16th, 17th, and 18th centuries. The American colonies progressed from marginally successful colonial economies to a small, independent farming economy, which… …
77Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …
78Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… …
79Economic history of South Africa — Prior to the arrival of European settlers in the fifteenth century the economy of what was to become South Africa was dominated by subsistence farming and hunting. In the north, central and east of the country tribes of Bantu peoples occupied… …
80Geological history of Earth — impacting the Earth in a glancing blow. [cite journal | last = R. Canup and E. Asphaug | title = Origin of the Moon in a giant impact near the end of the Earth s formation | journal = Nature | volume = 412 | pages = 708–712 | date = 2001 | url =… …
