thumbnail

The Muralla Pircada-an ancient Andean debris flow retention dam, Santa Rita B archaeological site, Chao Valley, Northern Peru??

Landslides

By:
, , , ,
DOI: 10.1007/s10346-005-0051-7

Links

Abstract

Debris flows caused by El Nin??o events, earthquakes, and glacial releases have affected northern Peru?? for centuries. The Muralla Pircada, a northeast-trending, 2.5 km long stone wall east of the Santa Rita B archaeological site (Moche-Chimu??) in the Chao Valley, is field evidence that ancient Andeans recognized and, more importantly, attempted to mitigate the effects of debris flows. The Muralla is upstream from the site and is perpendicular to local drainages. It is 1-2 m high, up to 5 m wide, and is comprised of intentionally-placed, well-sorted, well-rounded, 20-30 cm cobbles and boulders from nearby streams. Long axes of the stones are gently inclined and parallel local drainage. Case-and-fill construction was used with smaller cobbles and pebbles used as fill. Pre-Muralla debris flows are indicated by meter-sized, angular boulders that were incorporated in-place into construction of the dam and are now exposed in breeches in the dam. Post-Muralla debris flows in the Chao Valley are indicated by meter-sized, angular boulders that now abut the retention dam. ?? Springer-Verlag 2005.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The Muralla Pircada-an ancient Andean debris flow retention dam, Santa Rita B archaeological site, Chao Valley, Northern Peru??
Series title:
Landslides
DOI:
10.1007/s10346-005-0051-7
Volume
2
Issue:
2
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Landslides
First page:
117
Last page:
123
Number of Pages:
7