Minoan civilization especially the sequence of ceramic styles, have been used by archaeologists to define the three phases of Minoan culture (EM, MM, LM). Since wood and textiles have decomposed, the best-preserved (and most instructive) surviving examples of Minoan art are its pottery, palace architecture (with frescos which include landscapes), stone carvings and intricately-carved seal stones. Frescoes were the primary art form of Minoan culture. They include many depictions of people, with sexes distinguished by color; the men's skin is reddish-brown, and the women's white. Several frescoes at Knossos and Santorini survive. In contrast to Egyptian frescoes, Crete had true frescoes. Probably
Minoan civilization is characterized by affluence (wealthy tombs, burials and art) and ubiquitous Knossian ceramic styles, by LM IIIB Knossos' wealth and importance as a regional center apparently declined. Significant remains have been found above the late Minoan I-era Thera ash layer, implying that the Thera eruption did not cause the immediate collapse of Minoan civilization. The Minoans were a sea power, however, and the Thera eruption probably caused significant economic hardship. Whether this was enough to trigger a Minoan downfall is debated. Mycenaean Greece conquered the Minoans during the late Minoan II period, and Mycenaean weaponry has been found in burials