Duncan Pirrie

Gwyddorau Amgylcheddol a’r Ddaear

1. ammonite 12%
2. analysis 14%
3. Antarctic region 13%
4. Antarctica 100%
5. arsenic 15%
6. basin 41%
7. basin evolution 13%
8. belemnite 28%
9. calcite 22%
10. Campanian 27%
11. carbonate 15%
12. cement (construction material) 13%
13. chalcopyrite 11%
14. concretion 26%
15. Coniacian 11%
16. Cretaceous 61%
17. crime 12%
18. environmental crime 11%
19. estuary 28%
20. fossil 11%
21. geochemistry 24%
22. geology 16%
23. igneous province 11%
24. Jurassic 33%
25. Maastrichtian 38%
26. metal 16%
27. mine waste 25%
28. mineral 38%
29. mineralization 16%
30. mineralogy 40%
31. mudstone 14%
32. paleotemperature 22%
33. palynology 14%
34. petrography 14%
35. platinum group 27%
36. platinum group element 20%
37. provenance 26%
38. sandstone 22%
39. Santonian 11%
40. scanning electron microscopy 23%
41. sediment 31%
42. sedimentation 18%
43. sedimentology 15%
44. soil 14%
45. Southern Hemisphere 12%
46. stone 13%
47. stratigraphy 36%
48. sulfide 18%
49. tin 15%
50. Tithonian 19%