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Difficulty: EasyMegalithic Architecture and Sacred Spaces

The ceremonial and administrative center of Nan Madol in Micronesia was constructed on a series of artificial islets. Which of the following describes the primary building materials and construction methods used to build the monumental walls of these islets?

  1. A
    Molded adobe bricks reinforced with protruding wooden beams to support seasonal replastering
  2. B
    Finely dressed granite blocks carved with curved edges and fitted without mortar using a dry-stone technique
  3. Naturally formed columnar basalt and coral rubble fill stacked horizontally without mortarAnswer
  4. D
    Massive sandstone lintels placed horizontally across vertical posts using mortise-and-tenon joints

Answer

Naturally formed columnar basalt and coral rubble fill stacked horizontally without mortar
The correct answer is the option stating that naturally formed columnar basalt and coral rubble fill were stacked horizontally without mortar. The builders of Nan Madol took advantage of naturally forming prismatic basalt columns, transporting them from volcanic quarries on Pohnpei to construct more than 90 artificial islets. These columns were stacked horizontally in alternating directions (like log cabins) and filled with coral debris to create stable, raised platforms for buildings.

Step-by-Step Solution

1
Identify the geographical and cultural context of Nan Madol in Micronesia.
Nan Madol is an archaeological site adjacent to the eastern shore of Pohnpei, constructed on artificial islets.
Understanding the site's location helps recall its specific geological and material features.
2
Recall the geological materials available locally that were utilized in the construction.
The builders quarried naturally occurring columnar basalt from volcanic sites on the island, which naturally form prismatic shapes.
This identifies the specific stone type used instead of human-carved ashlar blocks.
3
Determine how the columns were arranged to form the monumental walls.
The basalt columns were stacked horizontally in alternating directions (headers and stretchers) to form hollow enclosures, which were then filled with coral rubble to create flat, elevated living surfaces.
This confirms the structural technique and matches the correct option.

Key Concept

The materials and construction techniques of the ceremonial complex of Nan Madol, utilizing columnar basalt and coral rubble.
Estimated Time:45s
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Topics

Megalithic Architecture and Sacred Spaces

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