Essential Concepts & Key Facts
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- An archaeological artifact is any portable object made, modified, or used by humans, retaining physical evidence of human behavior.
- Artifacts differ from non-portable "features" (hearths, walls, postholes) and unmodified biological "ecofacts" (pollen, wild seeds, natural bones).
- Material culture analysis uses artifacts to reconstruct prehistoric technology, domestic economy, and cross-regional trade networks.
- Raw material divisions separate artifacts into lithics (stone), ceramics (clay), metals, organics (bone, shell, ivory), and vitreous goods (glass, faience).
- Lithic typology classifies stone tools by manufacturing methods: flaked/knapped percussion (handaxes, scrapers) and ground/polished stone (Neolithic celts).
- Christian Jürgensen Thomsen established the foundational Three-Age System (Stone Age, Bronze Age, Iron Age) in 1836 at the National Museum of Denmark.
- Ceramic classification evaluates clay fabric, temper additives (sand, crushed shells, grog), surface treatment (burnishing, slip, glaze), and firing atmosphere.
- Diagnostic pottery horizons act as chronostratigraphic markers, such as India’s Ochre Coloured Pottery (OCP) and Painted Grey Ware (PGW).
- Northern Black Polished Ware (NBPW, circa 700–200 BCE) marks the second urbanization and iron-age state consolidation across northern India.
- Metallurgical artifacts are classified by alloy composition: native cold-hammered copper, smelted arsenical/tin bronze, wrought iron, and cast iron.
- Attribute Analysis records discrete metric measurements (length, width, thickness) and qualitative variables into digital databases for statistical modeling.
- Morphological Typology groups artifacts by physical geometric shape, while Functional Typology groups tools by their inferred everyday utility.
- Microwear analysis, developed by Sergei Semenov, uses high-magnification microscopy to identify polish and micro-striations from cutting or scraping.
- Residue analysis uses gas chromatography-mass spectrometry (GC-MS) to identify preserved ancient lipid residues of milk, wine, or plant oils in pottery walls.
- Provenience records the precise three-dimensional spatial coordinates (X, Y, Z coordinates tied to a site datum) of an artifact in stratigraphy.
- Artifacts found in their original, undisturbed deposition layer are in primary context; disturbed or eroded artifacts are in secondary context.
- Frequency seriation, popularized by Sir Flinders Petrie in 1899, chronologically orders artifact styles based on changes in decorative popularity over time.
- X-ray Fluorescence (XRF) and Neutron Activation Analysis (INAA) identify trace geochemical signatures to trace ancient obsidian and copper trade routes.
- The Antiquities and Art Treasures Act, 1972, in India defines an antiquity as any object or manuscript existing for not less than one hundred years.
- Experimental archaeology manufactures replica stone tools and fires replica pottery kilns to verify ancient manufacturing hypotheses.
- Preventive conservation stabilizes unstable artifacts against chemical degradation, including desalinating terracotta and halting bronze disease.
- Stratigraphic context is irreplaceable; unrecorded illicit looting of artifacts permanently destroys the scientific data needed to date ancient human activities.
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