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Babylon ’s bright - blue Ishtar Gate was thought to have been build to celebrate the subjection of Jerusalem — but a young depth psychology finds that it may have been erected years by and by .

The iconic glazed - brick edifice , which King Nebuchadnezzar II ordered to be built and decorated withwild bulls and mušhuššu - dragonswhile opinion the Babylonian empire from 605 to 562 B.C. , was constructed in three phases and served as the entrance to the ancient metropolis ofBabylon , located in southernMesopotamia . However , the accurate dates of each construction phase have long been up for public debate , grant to a study published Wednesday ( Jan. 17 ) in the journalPLOS One .

The Ishtar Gate of Babylon as seen at the Pergamon Museum in Germany.

The Ishtar Gate of Babylon as seen at the Pergamon Museum in Germany.

While it ’s be intimate that Nebuchadnezzar II ordered the first phase , as these brick are autograph with his name , it was less cleared if some meter had passed before the second and third stage were completed , according to the written report . Some researchers even wonder if Nebuchadnezzar II had died before the gate ’s completion .

To set the record straight , archaeologists collected tiny samples from five of the fired mud bricks from theIshtar Gate(now reconstruct at the Pergamon Museum in Berlin ) broadcast across the three phase and measured the geomagnetic fields of each one in a cognitive operation cognise as archaeomagnetism .

interrelate : Cuneiform lettering from last king of Babylon chance upon in Saudi Arabia

Fragment of a stone with relief carving in the ground

Archaeomagnetism measures the consequence ofEarth ’s magnetised fieldthat ’s preserved in the archaeological book of an object , allot to theMcClung Museum of Natural History and Cultureat the University of Tennessee , Knoxville . It offers an even more accurate clip stamp thanradiocarbon dating , the most common method of archaeological measurement .

This new analytic thinking determined that there were no " significant chronological gaps " between each construction phase and that the " gate composite was constructed some fourth dimension after the Babylonian conquest of Jerusalem " that take place in 586 B.C. During the conquest of Jerusalem , theBabylonians destroyed Solomon ’s Temple , also known as the First Temple ; burned down the city ; and exile the Jews to southern Mesopotamia , also known as Babylonia .

The researchers concluded that because all of the charismatic - field measurements in the five bricks were standardised , the reconstruction were executed around the same time : 583 B.C. , according to the study .

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" The age is base on the period of the sovereignty of Nebuchadnezzar II , during which the guild to ramp up the gate was given , " the squad wrote in the study , indicate that the king was animated at the gate ’s completion .

The determination suggests that the Ishtar Gate did n’t change style through the construction process but rather that " phases II and III are pertain to the original design of the gate and mull the construction operation rather than later gain , detach from the original construction of form I , " the authors wrote .

The researcher trust to perform similar archaeomagnetic analysis on other ancient structures in Mesopotamia , since fired mud brick have proved to be authentic sources for this proficiency and were a vernacular building material during that era .

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