Archaeogeodesy is the field of study I proposed in 1991 upon publishing Site-to-Site Relationships of Monumental Prehistoric Sites of North America. In 1992, I wrote Archaeogeodesy, A Key to Prehistory, discussing basic concepts and presenting study findings to illustrate fundamental ideas. Rewrittten and enlarged, the online version is now a series of four articles. Above is the first paragraph.

Since 1992, GPS technology has become readily available and affordable. Coordinates I once scaled from maps are being refined to near-meter accuracy. The GPS system also utilizes a global coordinate system. Previous national systems utilized distinct reference spheres and required corrections. Current technology has facilitated moving beyond approximate coordinates and consequent preliminary study results. Therefore, more findings are now incorporated in these pages.

Archaeogeodesy, A Key to Prehistory:  Part 1  |  Part 2  |  Part 3  |  Part 4
	RECENT  -  ArchaeoBlog Mound Builders of the Eastern Woodlands Photo Galleries Temporal Epoch Calculations Epoch Calc

Archaeogeodetic Excel Applications with Site Coordinates If utilizing the software and data I present, the degree of accuracy inherent in the coordinates must be considered. Unless coordinates are GPS determined, accuracy is approximate. Hopefully, distribution of these tools will stimulate others to acquire GPS coordinates. I welcome contributions of GPS data, and thank those who have added to the site data.
ArchaeoGeodesy Archaeogeodetic Excel calculator: arc distances and bearings for three sites, with mounds, pyramids, and sites worldwide.	Neolithic_Calc Arc distances and bearings for three sites, with some Neolithic monuments of northeastern Europe.
Ancient Monument Placemarks for Google Earth. The placemarks files integrate with the applications, using the same coordinates and site code terms, and with the Photo Galleries, linking photos.

The Geodesy Page presents definitions, figure of the earth formulas,
and other useful information about geodesy.

Preliminary Archaeogeodesy Study Results
for Three Major Neolithic Complexes

Thornborough Henges and the Ure-Swale Monuments
Assessing Evidence of Geospatial Intelligence in the Neolithic

The Chaco Meridian. Big Horn Medicine Wheel, Mt. Wilson, Aztec Ruin, Chaco Canyon,
the Mimbres Valley, and Casas Grandes in Northern Mexico are all situated
on an approximate north-south line near the 108th meridian.

The Ur and Harran Latitudes, and Göbekli Tepe

The Archaeoastronomy Page contains the sources and bibliography list.

Formulas, constants, and definitions employed in the Archaeogeodesy Pages
Astronomy Formulas	Astronomical Constants	Cosmographic Values	Geodesy Page

Epoch Calc temporal variation in astronomy constants, obliquity of the ecliptic, eclipses....

Watching Eclipses, Counting Orbits PowerPoint with AeGeo code.

Archaeogeodesy Studies