Geology study guides

A deep-dive OCR A-Level Geology guide to fieldwork and geological skills (Module 1). Covers recording field observations and reading geological maps, dip, strike and true-thickness calculations, and engineering geology and site investigation, with the practical exam patterns OCR repeats in Paper 3.

A deep-dive OCR A-Level Geology guide to Module 3 Global tectonics. Covers the development of plate tectonics and its evidence, the three plate-margin types and their features, earthquakes and seismic waves, volcanism and eruption styles, and geological structures (folds, faults and unconformities), with the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to natural resources and economic geology. Covers ore-forming processes, mining geology with ore-grade and contained-metal calculations, the petroleum system, and groundwater with porosity, permeability and Darcy's law, with the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to Module 6 Geohazards. Covers earthquake hazards, risk and mitigation, volcanic hazards and monitoring, and landslides and slope stability, with the hazard-vulnerability-risk framework and the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to Earth structure, sedimentary environments and basin analysis. Covers the layered Earth and the seismic evidence (Moho and shadow zones), facies and sedimentary structures, the main depositional environments and logs, and basin types, subsidence and accommodation space, with the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to geological time and the fossil record. Covers relative dating and stratigraphic principles, fossils and preservation, the geological time scale and correlation, evolution and mass extinctions, and radiometric dating with half-life calculations, with the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to rock-forming minerals and igneous processes. Covers the silica tetrahedron and silicate groups, mineral identification, Bowen's reaction series and fractional crystallisation, igneous classification by silica content and texture, and intrusive and extrusive forms with the exam patterns OCR repeats.

A deep-dive OCR A-Level Geology guide to sedimentary and metamorphic processes. Covers weathering, erosion and transport, lithification and the clastic, chemical and biogenic rock classes, regional, contact and dynamic metamorphism with grade and index minerals, and the rock cycle, with the exam patterns OCR repeats.