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Rock units here: Enogerra Granite (Late Triassic) and Bunya Phyllite (Late Devonian/ Early Carboniferous)
General guidance (things to think about while you are writing your report)
Site 1 provides an indication of the general rock type in this area, the Bunya Phyllite. This is a low-grade metamorphic rock unit which is highly variable in composition and is approximately the same age as the Nerangleigh-Fernvale Beds (Carboniferous/ Devonian).
Sites 2-4 provide a transect across a major change in rock type. Your job here is to work out what is happening.
- At each site what is the lithology? Identify the conditions under where the rocks were deposited/ formed.
- The lithologies at the sites you find in this location are related but different. How are they related to one another? Can you determine which came first
- Using this information what can you infer about the tectonic environments during the times of deposition/ production of each rock unit?
Site 1 Simpson Falls Car Park
Simpson Falls Car Park Tour (click to access)
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Site 2 Sir Samuel Griffiths Drive
Does the lithology here differ from Simpson Falls Car Park, nearby of is it similar?
Click to access (video in tour)
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Site 3 Sir Samuel Griffith Drive
Does the lithology here differ from Simpson Falls Car Park, nearby?
Click to access (video in tour)
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Site 4 Sir Samuel Griffiths Drive
What is happening at this site? What does the nature of the contact here tell you?
Click to access