DU1-Introduction to geology
DU1-Introduction to geology
11 R to Z terms
The following terms are included in the first chapter of the “GUIDE-INTERPRETER OF GEOTURISM” manual, created through EU ERASMUS Framework. Project name: GEOTUR: Validation and recognition of two competence units in geological tourism Project no. 2018-1-ES01-KA202-050397
- Relative ages
- Placing rocks and geologic events in their proper sequence, oldest to youngest. The age of one geologic feature compared to another.
- Rhyolite
- A very acid volcanic rock (typically with >69% SiO2 content); it can be considered as the extrusive equivalent to the plutonic granite rock.
- Rift
- In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics.
- Risk management
- Identification, assessment, and prioritization of risks in order to minimize, monitor, and control the probability or impact of unfortunate events like natural hazards.
- Rock fall
- Is the rapid, free fall of rock from a steep cliff face. Rock fragments fall from the face of the cliff because of the action of gravity.
- Schist
- Metamorohic rock, coming from clay, or metapelite, intermediate to high temperatures and pressures; crystals are larger with the grains aligned in parallel to subparallel layers.
- Subduction
- Is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced or sinks into the mantle.
- The rock cycle
- Illustration of the interrelationships between earth materials and processes - the three rock types are transformed into one another by processes of weathering and erosion, melting and exposure to heat and pressure
- Volcanic eruption
- A volcanic activity that allows magma, gases, ash and rocks to move up and emerge from the interior of a volcano. Eruptions are often sudden and violent.
- Volcanologist
- A scientist, who studies volcanoes.
- Weathering
- Is the breaking down of existing rocks, and minerals due to physical, chemical and biotic processes through the contact with the Earth's atmosphere, waters, and biological organisms.
