geology
gb/d͡ʒiˈɑləd͡ʒi/ us/d͡ʒiˈɑləd͡ʒi/
B2
English
~ 8900
Senses
0 senses
Noun
technical
B2
entity
1
science of Earth’s rocks and history
The science that studies rocks, the Earth’s crust, and how the Earth has changed over time.
Usage pattern:
to study [geology]; a degree in [geology]
Common mistake:
Learners often confuse “geology” with “geography.” Geology is about rocks, Earth structures, and how the Earth changes over time. Geography is about places, regions, maps, and how people live in different areas. For example, you study volcanoes and rock layers in geology, but countries and cities in geography.
Synonyms
earth science (Broader term that includes geology and related sciences like meteorology and oceanography, not just the study of rocks.)
Antonyms
biology (Contrasts as the science of living things, not the Earth’s physical materials and structure.)
Collocations
study geology
|geology degree
|geology department
|geology professor
|geology textbook
|field geology
Themes
science
|earth
|environment
|education
Examples
- She decided to major in geology because she loves studying rocks and volcanoes.
- Modern geology uses satellites and advanced imaging to understand how continents move.
- The conference brought together experts in geology, climate science, and oceanography.
- His research in geology focuses on how earthquakes start along fault lines.
- An introductory course in geology is required for all environmental science students.
Learner examples
- I want to study geology at university.
- Geology helps us understand how mountains are formed.
- My brother reads many books about geology and rocks.
- In geology class, we looked at different types of stone.
- She is a geology student and often goes on field trips.
Noun
technical
C1
entity
2
rock structure of an area
The kinds of rocks and the rock layers that make up a certain place.
Usage pattern:
the geology of [a place]
Common mistake:
Learners sometimes confuse this meaning with surface features like rivers or roads. “The geology of an area” refers to what the land is made of inside—its rocks and layers—not its cities, roads, or people. Those are part of geography, not geology.
Synonyms
geological structure (More formal and focused on the arrangement of rock layers and faults, not just rock types.)
Collocations
the geology of the region
|local geology
|complex geology
|regional geology
|underlying geology
Themes
science
|earth
|environment
|nature
Examples
- The geology of this valley makes it very prone to landslides.
- Oil companies carefully study the geology of an area before drilling.
- The island’s geology is dominated by volcanic rocks and lava flows.
- Because of the complex geology of the region, building the tunnel took many years.
- The rover sent back data on the geology of the Martian surface.
Learner examples
- The geology of this area is mostly hard rock.
- Farmers here know the local geology is not good for deep wells.
- Scientists studied the geology of the coast before building the new port.
- The city’s geology makes earthquakes more dangerous.
- We learned about the geology of our country in class.
Grammar
Dictionary form
geology
IPA
GB/d͡ʒiˈɑləd͡ʒi/
US/d͡ʒiˈɑləd͡ʒi/
Syllables & stress
geo - logy (2 syllables)
Stress on 2nd syllable (logy)
Word forms
Noun
- Base: geology
- Plural: geologies, geology
Word family
Forms
geologies
noun
Core family
Related words
geologic
adjective
Advanced or less common
geoscience
noun
geoscientist
noun
Expressions
the geology of
1/ðə d͡ʒiˈɑləd͡ʒi əv/
fixed phrase
technical
rock makeup of a place
Used before a place name to talk about the rocks and rock layers that make up that place.
Examples
- The geology of this region makes it rich in copper.
- Researchers are mapping the geology of the seafloor.
- The geology of the moon is very different from that of the Earth.