Examkin

Question

Difficulty: MediumArchaeological Dating and Contextual Analysis

The prehistoric sculpture known as the *Camelid sacrum in the shape of a canine*, carved from the pelvic bone of an extinct camelid, was discovered in Tequixquiac, Mexico, embedded deep within a geological stratum. Because the bone has undergone fossilization—wherein organic matter is replaced by mineral deposits—direct radiocarbon (14C^{14}\text{C}) dating of the artifact is not viable.

How did geologists and archaeologists determine the age of this work?

  1. Dating the volcanic and sedimentary strata surrounding the artifact using absolute methods like potassium-argon analysis to establish a chronological bracket.Answer
  2. B
    Performing direct radiocarbon (14C^{14}\text{C}) dating on the fossilized bone tissue to measure the remaining radioactive carbon isotopes.
  3. C
    Comparing the artistic style of the carving to regional cave paintings to match its iconography to known shamanistic hunting rituals.
  4. D
    Testing the stress points of the carving to determine if it served as a load-bearing post-and-lintel element in prehistoric shelters.

Answer

Dating the volcanic and sedimentary strata surrounding the artifact using absolute methods like potassium-argon analysis to establish a chronological bracket.
The age of the Camelid sacrum was determined by dating the surrounding volcanic and sedimentary layers rather than the artifact itself. Since the bone had fossilized, replacing organic carbon with minerals, direct radiocarbon dating was impossible. Geologists used absolute dating methods like potassium-argon dating on the surrounding volcanic strata to provide a chronological range for the layer containing the fossil.

Step-by-Step Solution

1
Identify the material constraint of the Camelid sacrum.
The artifact is made of fossilized bone, meaning the original organic carbon-14 has been replaced by inorganic minerals over thousands of years.
This rules out direct radiocarbon dating, which requires organic carbon.
2
Analyze alternative dating methods for artifacts embedded in geological strata.
Archaeologists look at the surrounding volcanic ash and sedimentary layers (stratigraphy) to perform indirect dating.
Volcanic ash layers can be dated absolutely using potassium-argon (40K→40Ar^{40}\text{K}\rightarrow^{40}\text{Ar}) dating, which provides an age bracket for the sedimentary layer containing the fossil.
3
Determine the correct archaeological conclusion.
The age of the sculpture is established by dating the surrounding volcanic and sedimentary strata, rather than the object itself.
This combines relative stratigraphic position with absolute dating of volcanic materials to bracket the object's age.

Key Concept

Archaeological dating methods and stratigraphic analysis of prehistoric artifacts
Rate this question

Topics

Archaeological Dating and Contextual Analysis

More questions from this topic