红陶是新石器时代出现的一种器表呈红色的陶器。人类发明陶器以红陶为主，灰陶、黑陶次之，红陶分细泥红陶和夹砂红陶两种，主要原料是粘土。它的烧成原理是：陶坯入窑焙烧时采用氧化焰气，使陶胎中的铁转化为三价铁，器表便呈红色。根据陶胎粗细及含砂与否，可分为泥质红陶和夹砂红陶。裴李岗文化、仰韶文化、马家浜文化等都以红陶为主。 1921年，我国在河南渑池县仰韶村首次发现红陶。
大溪文化的发现，揭示了一种以红陶为主并含彩陶的地区性文化遗存。
The discovery of Da Xi culture has revealed a local culture relic featured with red potteries and other painted ones.
前者是以手制泥质红陶和夹砂红陶上具有彩绘和绳纹为特色，称为彩陶文化；
The former is based on hand-made terra-cotta and coarse terra-cotta clay that has painted and Jomon features, known as the painted pottery culture;
所有这些分析结果，皆支持了考古学家关于凌家滩“红陶块”为砖的雏型的推测。
All of these results support strongly the archaeologist 'conjecture that the "red burnt clay" from Lingjiatan site should be the rudiment of brick.
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