What are grids in archaeology?
One of the keys to successful archaeology is knowing exactly where everything was found on a site. To make this process efficient, archaeologists lay out a grid for mapping the entire site and smaller areas within the site.
Why do archaeologists dig in grids?
Because site are destroyed during excavation, archaeologists are required to record the context of all material located on the site. One way to ensure the preservation of the location of items uncovered is by recording all materials excavated. The first step in this process is establishing a site grid.
What is a datum point in archaeology?
datum. -a known, immovable, locatable point on an archaeological site from which everything is measured and mapped. This point helps locate every point on a site map, horizontally across the land and vertically, above sea level. DBD. -depth below datum – is a measurement below the datum on an archaeological site.
What are the 7 steps of archaeology?
mapping, measuring, artifact collection, cleaning, sorting, counting and drawing of artifacts.
What are the steps of an archaeological dig?
Four Stages of Archaeological Assessment:
- Background Study. Determine the possibility of an archaeological site on the property by studying maps and historic records.
- Property Assessment/Field Survey.
- Site Specific Assessment.
- Mitigation.
Why do the archaeologists spend so much time setting up a grid?
They measure each square in the grid and assign it a number. These squares are often referred to as units. This system allows the archaeologist to create a precise map and to record the exact location of all the features and artifacts on the site.
What is a total station in archaeology?
The total station is an electronic theodolite (transit) integrated with an electronic distance meter (EDM) to read slope distances from the instrument to a particular point.
What are the 4 phases of archaeological research?
What are the 3 phases of archaeological work?
Generally speaking, most archaeological field investigations are a three-step process. These processes are known as Phase I (Identification), Phase II (Evaluation) and Phase III (Mitigation/Data Recovery).
What are the three methods of excavation?
10 Types of Excavation
- Bridge Excavation. Whether you’re building arch, beam or suspension bridges, you need a strong foundation to build on.
- Borrow Excavation.
- Channel Excavation.
- Drainage Excavation.
- Dredge Excavation.
- Stripping.
- Earth Excavation.
- Muck Excavation.
What is the difference between a theodolite and a total station?
A theodolite can be mechanical or electronic. A total station can measure angles and distances electronically and process trigonometrically to give us, at a minimum, position coordinates in space.
What is ppm in total station?
The acronym PPM, standing for parts per million, expresses the accuracy of a relative orthometric height used in GPS-aided ground leveling.
What is the purpose of grids?
Grids have so many uses, from helping to align and balance your designs, to helping you achieve cool effects like diagonal typography. They’re really so much more than just some lines on a page, they structure, guide, and shape your design in a way that helps you to achieve your desired end result.