How Do Archaeologists Date Remains They Find?

Holy Land Revealed

In my private tours in Israel, I am asked how do archaeologists date remains they find?  When archaeologists dig in a biblical Tel how do they know when a structure was built; or how long people lived there and eventually abandoned? In fact, there are all kinds of methods to help archaeologists date the specific layer they reached in archaeological tel. For example, there is Carbon 14 dating; coins; inscriptions; ancient historical sources, and pottery (ceramic) typology.



How Do Archaeologists Date Archaeological Remains? Carbon 14 Dating

This way of dating archaeological finds is the only “scientific” method here. In other words that you sent it to a lab and they come back with a date. Carbon 14 is a radioactive isotope of Carbon 12. All plants and living creatures contain Carbon 14 while they are still living. When a living thing dies, it begins to lose Carbon 14 at a steady rate.


In This Photo: A Sample of the Linen Wrapping From One of the Dead Sea Scrolls, the Great Isaiah Scroll, Was Included in a 1955 Analysis, With an Estimated Age of 1,917 ± 200 Years.

The problem is that this method is good only for organic materials. Another disadvantage is that the results come back with a plus-minus range of 100 years either way. For these reasons, Carbon 14 dating is useful when there are no other methods of dating for example in a prehistoric site or when objects do not have any stratigraphic context.

How Do Archaeologists Date Archaeological Remains: Coins

Coins are great in helping an archaeologist date stuff since coins usually carry their own date. But there are also some disarranges in coins as well. For example, at the excavations at Masada they found coins dated to the Hasmonean Period even though the very first structures were dated later; to the time of Herod the Great.


In This Photo: Judaea Capta Coinage, Minted After the Destruction of the Second Jewish Temple in Jerusalem in 70CE, Israel Museum.
(Credit:  Dr. Gary Lee Todd)

So the fact that we found coins dating earlier to the Herodian Period means we can date the site to an earlier period than the structure?  No! Coins in antiquity often remained in circulation for long periods. Sometimes for hundreds of years after they minted. So finding a coin that was minted in 90 BCE on the floor of a building can be misleading if the coin fell onto the floor 80 years later in the year 10 BCE.



In short, it is best to use more than one coin when possible or coins plus other methods of dating to obtain an accurate date. Another disadvantage with coins as a dating method is that coinage was not invented in the Mediterranean world until only 600 BCE. And once these people were beginning to use them they did not have the tendency to leave them lying around. Only because they were so valuable. Also when an archaeologist finds a coin sometimes it is impossible to read the date. This is especially true if the coins are made from bronze. This means you can excavate and sometimes not find any coins at all.

How Do Archaeologists Date Archaeological Remains: Inscriptions

Finding inscriptions or other written materials in excavations can help enormously to date an archaeological site. Inscriptions use a certain script. Also, language is evolving along the centuries or sometimes changes altogether when a new civilization is invading a region and settles in.


In This Photo: Pontius Pilate Inscription, Israel Museum.
(Credit:  Dr. Gary Lee Todd)

How Do Archaeologists Date Archaeological Remains: Ancient Historical Sources

These can be quite helpful for dating when they are available. For example in Qumran’s excavations under de Vaux, he found that the site was destroyed due to a major earthquake. He was able to date this event to 31 BCE because Josephus Flavius mentions that a strong earthquake affected the Jericho region during that year.


In This Photo: Beit Shean National Park – The Ruins of Beth Shean – You Can See the Columns (In Situ) Tilted the Same Side Due to an Earthquake in the 8th Century.

How Do Archaeologists Date Archaeological Remains: Pottery

In archaeological digs, pottery is found in great amounts. Even though pottery is not carrying its own date you can use it for dating. How do archaeologists do it?  So what they do is to try and establish a sequence. From the earliest type of pottery that they found at the very bottom of the archaeological mound.  All the way the recent ones dated to later periods. In this fashion, they can establish what is called a relative sequence. Even though that by itself cannot establish an exact date. Alongside other finds like coins, it can produce a date.



For example, let’s say we found a coin dated to the time of Augustus. Next to the coin, we found a broken red bowl with some decorations. Easily we can date this to the 1st century CE. Now once we will dig in a nearby site and again we found the same bowl but no coin next to it. We can deduce according to what we found elsewhere that it dated to the 1st century CE.

apt-stamp-white@2x
arik-about

Hi! My name is Arik Haglili, an Israeli native who decided to dedicate his life to share my knowledge about the Holy Land to those that are interested to know more about this amazing piece of land. My career as a private tour guide started at the International School For the Studying of the Holocaust and the rest is history. 

Did you know the Hoopoe is Israel's national bird?! For more cool info about Israel, join our ever growing community and get exclusive travel tips, and giveaways!

Simon Peter

RELATED POSTS

Excavations at the City of David

The archaeological excavations at the City of David are long and extensive. My post explores important areas and archaeologists digging there

Schumacher’s Excavations at Megiddo

Schumacher's Excavations were the very first conducted at Tel Megiddo. Among his finds was a seal from the time of King Jeroboam.

Bell Caves

Bell caves are centuries-old artificial quarries discovered in the Judean Plain. The caves are named for their shape, reminiscent of a bell.

The Cultic Area in Caesarea

The Cultic Area in Caesarea has been a vibrant area in the port city of Caesarea Maritima since its establishment 2,000 years ago.

Terra Sigillata Pottery

Terra Sigillata refers to a style of fine pottery used in Italy; Gaul; Germany. And throughout the Roman Empire from the first century BCE to ...

Abydos Ware

So Abydos pottery ware is a unique pottery group from the beginning of the 3rd millennium BC. Now the group mainly includes jugs; juglets and ...

Caesarea´s Roman Port

Caesarea´s Roman Port was one of the most impressive harbors of its time. It served as an important commercial harbor in antiquity.

The City of David

The City of David is an archaeological wonder that is being discovered layer by layer. Located in eastern Jerusalem; the ancient City of David is ...

Khirbet Kerak Ware

Khirbet Kerak Ware (Khirbet Kerak Pottery) is a ceramic family of pottery vessels from the Early Bronze Age III (2300-2700 BCE). This Khirbet Kerak Ware ...

List of Artifacts in Biblical Archaeology

Here is the ultimate list of artifacts in Biblical Archaeology you must read before coming to tour the Holy Land. It's a must-read!

Need help?

Skip to content