Test 3 Flashcards
True or False: Archaeology hasn’t been able to provide supporting evidence for accurate Indigenous oral histories going back thousands of years
False
What is environmental archaeology?
The reconstruction of human use of and interaction with plants, animals, and landscapes
What is geology?
“Study of the Earth,” looks at how the Earth formed, its structure and composition, and the types of processes acting on it
What is geoarchaeology?
Study of earth formation processes
Difference between geology and geoarchaeology?
Not much of a difference, they both study how the earth was formed
Uses of geoarchaeology?
To reconstruct the environment of the local area (ex: conditions of the terrain, water availability, flooding, erosion) can also be applied to religious contexts
What are glaciers?
Bodies of dense ice that is constantly moving under their own weight
What are moraine deposits?
They contain foreign rocks carried by the ice from glaciers
What are fossil ice wedges?
Soil features caused by when the ground freezes and contracts, opening up the fissures in the permafrost that fill with wedges of ice
Benefits of fossil ice wedges?
They are geoarchaeological evidence of past cooling of the climate and the depth of permafrost
What is permafrost?
A thick subsurface layer of soil that remains frozen throughout the year, occurring chiefly in polar regions
What are glacial varves?
Layers of sediment deposited annually in lakes around the edges of glaciers
Types of glacial varves?
Dark layers, thick layers, and thin layers
What does a dark layer (glacial varve) mean?
Accumulation of sediment in winter
What does a thick layer (glacial varve) mean?
Warm years with increased ice melt
What does a thin layer (glacial varve) mean?
Cold years with decreased ice melt
What are meanders?
Moving water in a river erodes the outer banks while the inner part of the river has less energy and builds up silt deposits
What is silt?
The fine bits of clay and sand that become soil/sediment settling at the bottom of a river or lake
What is geomorphology?
Study of soils and sediments in order to understand the formation of landscapes
Types of geomorphology?
- Analysis of the composition and texture of sediments (gravel to clay)
- Particle size (cobbles to silt)
- Degree of consolidation (loose to cemented)
What is soil micromorphology?
The use of microscopic techniques to study the nature and organization of the components of soil
What are the components studied in soil micromorphology?
Sediment sources, soil formation processes, human modifications
What are soils?
Vertically weathering profiles that develop in place; soils require time and stability to develop
What are sediments?
Particles transported by water, wind, gravity, or humans; sediments are formed by movement