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How can you tell the environment a sedimentary rock is deposited in?

The first stage in the formation of a sedimentary rock is the deposition of sediment. The size, shape and type of sediment can tell you lots about the depositional environment. In a high energy environment, ...
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Answered by Holly U. • Geology tutor
1913 Views

Describe and explain the changes organic material undergo in coalification

Organic material accumulates in an area of fast plant growth and anaerobic conditons (which stops the vegetation decaying), such as a tropical delta, the organic material is buried which leads to increases i...
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Answered by Callum B. • Geology tutor
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What are the major components required for a oil accumulation to form.

For a hydrocarbon (oil or gas) accumulation to form a source rock, reservoir rock and cap/seal rock are required. A trapping mechanism is also essential and this can be structural or stratigraphic. A source ...
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Answered by Zoe C. • Geology tutor
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What are the similarities and differences between Irregular and Regular Echinoids?

Both species are part of the same phyla, Echinodermata. They both live in marine environments, have the same feeding system, hasve ambulacra and tube feet, which they use for respiration. However, there are ...
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Answered by Emily H. • Geology tutor
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Describe the sequence and composition of an Ophiolite and evaluate its use in understanding the Oceanic Lithosphere

Ophiolites always follow a particular sequence and composition, the first layer is comprised of deep sea pelagic sediments (often red clays or greywackes) beneath this layer is a layer of Basaltic Pillow lav...
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Answered by Niall H. • Geology tutor
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