Witte Hi Pt S P Geology

Syncline a fold generally concave upward of which the

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Unformatted text preview: e resulting structures of the outer part of the Earth related to the movement of its crustal plates. terminal moraine - The end moraine that marks the farthest advance or maximum extent of a glacier. topography - The general configuration of the Earth’s surface, such as its mountains, valleys, and the shapes of landforms, that characterizes a given landscape. Trace fossil - Fossilized track, trail, burrow, or tube resulting from the movement of an animal. Triassic - The first period of the Mesozoic, thought to have covered the span of time between 225 and 190 million years ago. tundra - A treeless, level or gently undulating plain characteristic of arctic and subarctic regions. 44 Geologic Time Scale 299 to 359 million 359 to 416 million 416 to 444 million to temperate (mild). humans Pleistocene Northern New evolve. MESOZOIC Late Middle Early TRIASSIC Middle Late Early Late PERMIAN Early PENNSYLVANIAN2 MISSISSIPPIAN2 444 to 488 million Early JURASSIC PHANEROZO IC 251 to 299 million TERTIARY DEVONIAN SILURIAN ORDOVICIAN Late Middle Early Late Early Late Middle Early Late Middle Early Late Middle Early Late 488 to 542 million CAMBRIAN Middle 2500 to 4600 million ARCHEAN3 PROTEROZOIC3 Early 542 to 2500 million Neoproterozoic Mesoproterozoic Paleoproterozoic Neoarchean Mesoarchean Paleoarchean Eoarchean Geology, Life, and Environment Holocene Climate change from boreal (cold) Modern Pliocene Miocene Oligocene Eocene Paleocene CRETACEOUS PALEOZOIC 200 to 251 million QUATERNARY Late 66 to 146 million 146 to 200 million Epoch Lower limit of Eoarchean is not currently defined. Estimated to be 4600 million years. Jersey glaciated at least 3 times. First large mammals appear. Abundant mammals; first hominids. Grasses and modern birds appear. Heyday of dinosaurs, pterosaurs and marine reptiles until their extinction at end of period. First flowering plants. Earliest birds appear. Giant dinosaurs (sauropods) flourish. Plants: ferns, cycads and ginkos. Age of dinosaurs begins. First mammals. Mollusks are dominant invertebrate. Age of Amphibians. Pangea forms. Greatest mass extinction ever. Trilobites go extinct. Widespread coal swamps. First winged insects and reptiles. 414.2 million-year gap estimated in geologic record at High Point State Park 1.8 to 66 million Period Many ferns and am...
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