The 2 dipteroi of Artemis in Ephesos
The Archaic Artemison ("Kroisostemple") was one of the first big architectural constructions in history made of marble. There are indications of several precursor sanctuaries.
The marbles used for the construction of the Late Archaic as well as the Late Classical Artemision of Ephesos are exclusively of local provenance. The Late Archaic dipteros and other Late Archaic structures are built of "Ephesos II“ (quarry Belevi) marbles, whereas Ephesos I (quarry Ketli Çiftlik) marbles prevail in the construction of the Late Classical dipteros. The marbles of the "hekatompedos" are from the same source as those of the Croesus’ temple, thus supporting the hypothesis of Ae. Ohnesorg and M. Weissl that it was the altar of the Late Archaic dipteros. The foundations of the Classical altar are made of Ephesos II marbles like the Archaic structures and thus differ from the marbles of the contemporaneous temple.
Kerschner, M. und Prochaska, W., 2011: Die Tempel und Altäre der Artemis in Ephesos und ihre Baumaterialien. - Jahreshefte des Österreichischen Archäologischen Institutes in Wien 01/2011, 80, 73-154.