Tag Archives: stratigraphy

Oxygen Isotopes

How are oxygen isotopes used in the correlation of Quaternary sediments? Chemostratigraphy is using stable isotopes in determining stratigraphic ages. Isotopes are variations in the number of neutrons of a particular element. Some isotopes, like oxygen ¹⁶O and ¹⁸O, have … Continue reading

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Walther’s Law

With reference to Walther’s Law, describe how changes in sea level can change the vertical and lateral relationship of facies. Accommodation rate is when the subsidence of a depositional basin allows for the accumulation of more sediments. When the accommodation … Continue reading

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Weathering of Igneous Rocks

What physical processes contribute to the weathering of rock and why might you expect mafic igneous rocks to weather at a faster rate than felsic igneous rocks? Weathering is the physical disintegration and chemical decomposition of rocks into soil, loose … Continue reading

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Reefs

What is a reef? In your answer provide a definition, general diagnostic features and explain how the reef fauna and flora aid in the precipitation of calcium carbonate. Reefs are self-generated limestone deposits, created by the organisms living in them. … Continue reading

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