Tag Archives: Interpretation

Astronomy, Cycles and Climate Change

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Cycle: ( noun) A series of events that are regularly repeated in the same order (Oxford Dictionary)

 

Jurassic conglomerate cycles - how did they form?

How Milankovitch cycles effect Earth’s climate

Natural cycles are all around us; tides, seasons, sun spots, birthdays, El Niño.  In geology we can identify cycles at many different scales, from the really grand to the wafer-thin (deference to Monty Python), from those that span eons, to cycles that repeat every few seconds.  Perhaps the grandest of earth cycles are those that last 100-300 million years and involve the formation and destruction of tectonic plates.  On a more human time scale there is the seemingly never-ending train of waves rushing to meet you on your favourite beach. Continue reading

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How do we know which way is up #3. A philosophical interlude

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How Geologists Interpret Ancient Environments. 3  A Philosophical Interlude

You are confronted by a rocky cliff and your geologist friend tells you that these rocks formed originally in rivers that flowed through a wooded valley. How did your buddy come to this conclusion?

Interpreting ancient environments through our understanding of modern analogues Continue reading

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