When Land, Sea, and Life Began: The Precambrian
Heinemann-Raintree Library, Nov 23, 2005 - Juvenile Nonfiction - 80 pages
Imagine a world with a thick stew of poisonous gases. A world so hot that metals and rock melt. There is no land, no water, no life. This is not Jupiter or Saturn. This is our planet, Earth, over 4 billion years ago! Journey into the distant past with this book and witness the earliest events on Earth; when the land and sea first formed, and the earliest life arrived.
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543 million ago Named algae animals Archean asthenosphere atmosphere atom bacteria belts beneath Cambrian Canada Canadian Shield cells continental crust continents cooled core crystals cyanobacteria dating earth's crust Earth's magnetic field Earth's surface earthquake occurs Ediacaran elements extrusive flood basalt fold fossils fracture Geologists Glossopteris granite Greenland hardened heat plume hot spot igneous rock iron island arc land landmasses Laurentia lava limestone lithosphere living things located magma material metamorphic rock microcontinent miles million years ago minerals molten mountains movement Museum North America North American craton nucleus ocean ridge oceanic crust oldest orogeny oxygen Paleozoic Pangea Pannotia particles Period planet plate tectonics plates move Precambrian Proterozoic Proterozoic Eon quake radioactive rock called rock formed rock layers Rodinia scientists seafloor sediment sedimentary rock shield volcano silica Slave Province Stratovolcanoes stromatolites subduction zone supercontinent Superior Province tectonic plates transform fault trench valley volcanoes form waves Wegener