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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...
CB
Answered by Callum B. • Geology tutor
2126 Views

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 ...
ZC
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 ...
EH
Answered by Emily H. • Geology tutor
4849 Views

Please describe how, and explain why the texture of an igneous intrusion would change from the outer edge to the centre.

When intruding, hot magma contacts the cool country rock this will cause the outer edge will quickly cool and harden, therefore there will not be much time for crystals to form leaving a very fine crystal te...
SA
Answered by Sophia A. • Geology tutor
2183 Views

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...
NH
Answered by Niall H. • Geology tutor
3081 Views