Unit 2 Flashcards
What is archaeology
the study of the human past through material evidence of humans
Why do archaeologists dislike the art market?
it encourages looting which destoys context and the past is lost
what does context mean?
where an artifact was used (the site, the soils, the layer that the artifact came from)
why do archaelogists discourage private collections?
collections encourage the destruction of sites and iformation that can be gained is reduced
what do archaeologists do?
-survey for sites (find the locations of past human activity
- excavate
-lab work
-publishing
what are the different types of fieldwork
survey and excavation
what are surveys
walking a cross and area looking for artifacts and sites then create a map showing the locations of the things you found
what are the pros and cons of regional surveys
pros- provide small info about a large number of sites
- less expensive
what are the cons of regional surveys
they provide more general results
what is the goal of a regional survery?
to map the locations of sites over a large area and compare changes through time
what advanced tools are used in regional survey
aerial and satellite imagery
ground penetrating radar (gps)
a tool used in field survey that looks like a lawnmower, it sends signals down to the groud that bounce back if there is something in the ground
what are the two types of archaeological excavation
vertical and horizontal
goal of vertical excavation
to understand chronology and culture change over time
example of stratigraphy
different colors of soil in the ground that represend different events
what is vertical excavation
deep cross section through multiple time periods
what is horizontal excavation
broad areal exposure of a layer from a single time period
what is the goal of horizontal excavation
understand site function and use of space during a single time period
difference between regional survey and excavations
surverys cover a large amount of area vs. excavation is focused on getting info on a small area and it is more expensive
what are the two dating methods
relative dating and absolute dating
what is relative dating
statigraphy ex.) the top of the soil is the youngest while the deepest part of the soil is the oldest
what is absolute dating
Radiocarbon dating and dendrochronology dating
what is radiocarbon dating
a method in which can accurately determine the age of organic materials (having once lived like plants,animals, etc.)
how does radiocarbon dating work
-after death C-14 (isotope) decays into N-14
- half life is 5,730
-good for things less that 30k yrs old
- objects must be organic
dendrochronology
-dating method that is only used in areas of good wood preservation
what 3 components do archaeological sites have
artifacts, eco facts, and features
what are artifacts
any object created or modified by human action (cups, tools, statues)
what are ecofacts
an unmodified natural item that humans have used or affected ( animal bones and pollen grains)
-these are important for info about diet and climate
what are features?
immovable objects, structures, floors, trash layers, pit.etc
- gives info about context of a site
how does a site become a site?
though rare
- catostrophic destruction
-raiding and warfare
what conditions are good for preservation
extreme cold, very wet, or very dry conditions
when did amh arrive in australia
50k BC ( the sea level was low enough that there was a land bridge between asia and north america
clovis culture
- clovis is the earliest recongnized culture in north america
- clovis people used fluted clovis sprear points to hunt with
the clovis model
places the arrival of the first americans around 12k to 11k BC, just as the last ice age was ending
pre-clovis model
suggest that humans reached north ameria earlier, bring with them different and more generalized tool making culture
What three major language groups suggest that seperate migrations occured (linguistic evidence )
Amerind (south-central, and North america)
-na dene (SW US navajo and apache)
- Athapaskan (NW Us. Canada, alaska)
what evidence is there for earlier cultures (pre-clovis) in the Americas?
The site of monte verde in chile -dates around 12,000 BC
what diseases were exchanges to the old-new and new-old
old to new -smallpox, measles, typhus,cholera, scarlet fever
new to old- syphilis
Bering starit
white sands
in mexico footprints were found that had seeds which dated to 23 b.c which showed that people arrived to the americans before 24k bc
monte verde
site in chile that dates to 12k b.c
it has good evidencce of people
Dna evidence
suggest there were at least 3 major migrations