Suchil River Valley Archaeological Project, Zacatecas and Durango, 2005 Season

Sampling Method

The objective of our survey is to obtain a representative sample of ancient settlements in the study region, for which we used a random stratified systematic method at 33%. First, we divided the INEGI F-13-B-24 Vicente Guerrero chart in quadrants or sampling units of one square kilometer each. Later, we chose an area of 250 quadrants which included several topographic formations or natural zones present in the region (alluvium, low hills, and high parts of mesas and mountains), that is to say, a stratified sample. From this representative area we selected through a random process 33% of the total quadrants, which means 82 units to survey. Finally, we walked over 38 km² or quadrants with transects at an equidistance of 20 m from each other.

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