Term
| Cenozoic, mesozoic, paleozoic |
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Definition
| what are the three major eras? |
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Term
| recent life, began 65 million years ago |
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Definition
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Term
| Waht are the two periods of cenozoic? |
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Definition
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Term
| What happened during tertiary period- |
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Definition
flowering palts, apes elephants appear, primative horses
ALantic ocean widens
ALps and Himalaya form
India collides with asia |
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Term
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Definition
| Humans became dominant, ice age |
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Term
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Definition
| intermediate life, began 225 million years ago and laster 160 million years. |
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Term
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Definition
| ancient life began 570 million years ago and laster 345 million years |
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Term
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Definition
| 7/8 of earths hisotry- not much is known about this era includes paleozoic |
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Term
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Definition
| the times of extinction are used to divide geologic history into . |
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Term
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Definition
| when did the earth come into being? |
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Term
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Definition
| when did living things fluorish? |
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Term
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Definition
-rise of reptiles, large insects
-large nonflowering plants in enormous swamps, amphibians, sharks
-first land plants, large coral reefs
-marine invertebrates with shells |
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Term
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Definition
| creatures without inter skeletons but with external shells |
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Term
| intense tectonic activity. |
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Definition
| how did paleozoic era end? |
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Term
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Definition
| what does bed of coal imply? |
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Term
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Definition
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Term
50% cenozoic
25% mesozoic and the rest in paleozoic |
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Definition
| what % of coal was formed in each era? |
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Term
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Definition
| earliest mesozoic sediments laid down |
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Term
| Pangaea split into laurasia and gondwana |
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Definition
| What happened to contients during mesozoic period? |
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Term
| dinosaurs and small mammals towards the end of the era |
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Definition
| What animals were prominent in mesozoic era? |
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Term
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Definition
| What divides mesozoic from cenozoic era? |
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Term
| almost continual in contrast with other periods |
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Definition
| has cenozoic era have tectonic disturbances |
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Term
Himalays of asia
Alps of Europe
folding and uplifting of rocks |
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Definition
What mountain ranges were formed in the Tertiary in the mesozoic era?
HOw? |
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Term
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Definition
| wahted happened during pleistocene? |
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Term
| precamberian, paleozoic, mesozoic, and cenozoic era. |
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Definition
| Arrange the geological time in order |
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Term
| of the same kinds as those of the present time |
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Definition
| Ancient geological processes reval in precambrian strata were... |
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Term
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Definition
| coal desposits were formed during |
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Term
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Definition
| laurasia and gondwana broke up in the |
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Term
| there were several glacial advances and retreats |
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Definition
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Term
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Definition
| undisturbed sedimentary rock is older the lower you get |
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Term
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Definition
| igneous magma that cuts through strta. igneous rock is always younger |
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Term
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Definition
| comparring the age of something to the age of another thing |
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Term
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Definition
| exact age of something (number) |
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Term
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Definition
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Term
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Definition
| rocks (sedimentary) will be layed down horizontally if no faults/folding |
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Term
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Definition
any erosion surface creates it...
anyrock layer on top does not ..... |
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Term
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Definition
| What radionuclides are used to date rocks? |
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Term
| principle of uniformitarian |
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Definition
| instead of one catastrophic event, many shaped the earth to what it is today |
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Term
| principle of uniformitarian |
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Definition
| instead of one catastrophic event, many shaped the earth to what it is today |
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