1. What is the overall direction of younging of the Southern Uplands Terrane?
SSE (accept S or SE) (1 mark)
1 of 6
2. List the three lithologies present in order of age / deposition in a typical fault-bounded slice of the Northern Belt of the Southern Uplands, indicating oldest to youngest?
Basalt (Ocean Crust), Black shale, Turbidite (Greywacke) (3 marks)
2 of 6
3. Which part of the Southern Uplands contains the youngest of the Lower Palaeozoic rocks and what is their epoch / age of deposition?
Southern Belt (Hawick and Riccarton Groups) – Wenlock 428-423 Ma (2 marks)
3 of 6
4. What is the age of Iapetus Ocean (Laurentia – Avalonia) closure in: a) The faunal model, b) The structural model?
a) Early Devonian, b) Upper Silurian (Wenlock) (2 marks)
4 of 6
5. Where is the location in the Southern Uplands of a Global Boundary Stratotype Section and Point (GSSP) that marks the boundary between the Ordovician and Silurian periods?
Dob’s Linn, near Moffat (1 mark)
5 of 6
6. What is the main change in graptolite morphology across this boundary?
Change from 2 stipes (Dicellograptus) to a single stipe (Monograptus) (1 mark)
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Other cards in this set
Card 2
Front
2. List the three lithologies present in order of age / deposition in a typical fault-bounded slice of the Northern Belt of the Southern Uplands, indicating oldest to youngest?
Back
Basalt (Ocean Crust), Black shale, Turbidite (Greywacke) (3 marks)
Card 3
Front
3. Which part of the Southern Uplands contains the youngest of the Lower Palaeozoic rocks and what is their epoch / age of deposition?
Back
Card 4
Front
4. What is the age of Iapetus Ocean (Laurentia – Avalonia) closure in: a) The faunal model, b) The structural model?
Back
Card 5
Front
5. Where is the location in the Southern Uplands of a Global Boundary Stratotype Section and Point (GSSP) that marks the boundary between the Ordovician and Silurian periods?
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